- Steve’s paper, “Evaluating remote sensing of deciduous forest phenology at multiple spatial scales using PhenoCam imagery,” was accepted for publication in the EGU journal, Biogeosciences. The paper builds on work done by the REU team in 2011 (Rachel Norman, Isaac Lavine, and Lakeitha Mitchell) under the mentorship of Koen and Oliver.
- Andrew and Mariah went to the Ecological Society of America meeting in Sacramento, California. Andrew gave an invited symposium talk about the PhenoCam network. Andrew and Mariah both gave Ignite talks in the session on nonstructural carbon storage in trees. You can download Andrew’s talk, with recorded voiceover, here.
- Andrew and Don traveled to southern California for the annual meeting of the thermal imaging project. The meeting was held at the University of California’s James Reserve, on Mt. San Jacinto, just west of Palm Springs. Collaborator Mike Goulden hosted the meeting, which was also attended by project PI Chris Still, and collaborators Brent Helliker, Dar Roberts and Becky Powell. The panorama above shows Mike’s research site at Pinyon Flats, while the photos below (L to R) show Mike’s research tower, a view from Sunday’s hike up Tahquitz Peak, and a group photograph taken with a handheld thermal camera.
- The Harvard Forest REU program wrapped up with the annual Symposium, which Andrew, Steve, Don and Koen attended. Lily, Sidni and Katie all did great talk s. The photo shows (L to R) Andrew, Sidni, Koen, Steve, Lily, Don and John O’Keefe under the sugar maples by Shaler Hall.
- The PhenoCam network was profiled in an article in the Environmental Monitor, an online newsletter for environmental professionals. The article included some great photos from the Kamuela and Harvard Forest cameras.
- Trevor, Morgan, Meghan and Andrew attended the Hubbard Brook Cooperator’s meeting, at the Hubbard Brook field station in Campton, New Hampshire. Trevor gave a talk on his recent Nature Climate Change paper, which used Amey Bailey’s Hubbard Brook phenology data, and Andrew talked about the flux measurements from Bartlett. Andrew wrapped up by highlighting some of the key findings that have emerged from these data over a decade of measurements.
- The forest surrounding the tower is a sink for atmospheric CO2, with annual uptake of about 180 ± 70 g C m-2. Woody biomass increment is about 150 g C m-2
- Work this summer by REU Intern Ivonne “Lily” Trujillo was profiled in an online UT-Brownsville article, which you can read here.
- Because an airplane equipment malfunction fouled Andrew’s travel plans, he gave his keynote presentation to the Mountain Observatories 2014 conference, held in Reno, Nevada, by Skype. The title of his presentation was “Phenology, ecosystem processes, and climate change: What we are learning from the PhenoCam Network.”
- Photosynthetic light use efficiency is greatly enhanced by diffuse (vs. direct beam) solar radiation (Jenkins et al. AFM 2007, Lee unpublished thesis 2013)
- There is a strong coupling between photosynthesis, canopy nitrogen, and shortwave albedo (Ollinger et al. PNAS 2008, Hollinger et al. GCB 2010)
- A late-spring frost in 2010 had a significant impact on the carbon balance of the northeastern United States (Hufkens et al. GCB 2012)
- Forests have a warming effect on surface air temperature (Lee et al. Nature 2011)
- The photosynthetic water use efficiency of forests is rising as atmospheric CO2 rises (Keenan et al. Nature 2013)
- Year to year variation in phenology plays a major role in controlling variation in ecosystem productivity (Toomey et al. Ecol Apps 2014, Keenan et al. Nature Climate Change 2014)
- The Richardson Lab welcomed two REU students for summer 2014. Ivonne Trujillo (University of Texas at Brownsville '15) will be working with Don, Koen, Brett, and Graham to make a variety of leaf-level measurements in the canopy around the barn tower. Sidni Frederick (Harvard College '17) joins Steve in characterizing crown-level phenology of the canopy near the EMS tower.
- Morgan traveled to Utah and spent two weeks at Jim Ehleringer’s “IsoCamp” summer course on the application of stable isotopes to environmental and ecological studies. Morgan is hoping to use what she learned about isotopes in designing her dissertation research.
- Trevor’s paper is out in Nature Climate Change!
- Trevor arrived from Australia (via Ireland) and is visiting the lab for 5 or 6 weeks. While here he hopes to work on some phenology modeling projects with Andrew and Koen.
- Graham and Meghan spent two days at the Forest Service’s Northern Research Station office in Durham, NH, for tower-climbing safety training with Bob Evans.
- We said farewell to Brett, who is moving on to a faculty position at Bates College in Lewiston, Maine. In Brett’s honor we had a lab dinner at Tupelo, and pre- and post-dinner socializing on Andrew’s roof deck.
- Andrew was named a ”Highly Cited Researcher” for 2014 by ISI/Thompson Reuters.
- Andrew and Koen went to Washington DC to attend the NSF Macrosystems Biology PI meeting. Eli Melaas was there as the third representative of the PhenoCam team. Andrew gave a talk on the project and highlighted some of the recent results from modeling by Koen and Eli, and Koen presented a poster. Chris Still from OSU also attended the meeting and presented some of Don’s work on thermal imaging of forest canopies.
- Don got dressed up and marched in Harvard’s 363rd Commencement. He stopped by the lab while still in his academic robes and was congratulated by Min and Graham. Graham will receive his own degree at Stanford’s commencement in mid-June.
- Morgan spent a week at the SPRUCE project in Minnesota, where she helped with a labeling experiment being run by colleagues from Oak Ridge National Lab. The photo shows Morgan recording physiological measurements of leatherleaf.
- Michael’s paper analyzing relationships between PhenoCam “greenness” and the seasonality of CO2 fluxes, using data from a dozen AmeriFlux sites, has been accepted for publication in Ecological Applications.
- Andrew attended the International Association for Landscape Ecology (IALE) meeting in Anchorage, Alaska, and gave a talk on PhenoCam project. Incoming PhD student Miriam Johnston was also at the meeting, presenting her master’s work. And, Andrew ran into Spencer Meyer at the meeting – Spencer recently completed his PhD at U Maine, but in 2000, while he was an undergraduate at Dartmouth, he worked for Andrew as a field assistant during Andrew’s own dissertation research.
- Andrew’s research was profiled in a two-page spread in Discover magazine.
- Julie attended the DOE AmeriFlux and Terrestrial Ecosystem Sciences meetings in Washington DC. She presented a poster on her CH4 work at Howland.
- The paper based on Anika’s undergraduate thesis, “Monitoring vegetation phenology using an infrared-enabled security camera”, has been accepted for publication in Agricultural and Forest Meteorology. Anika is the lead author and Michael, Don and Andrew are coauthors. Congratulations, Anika!
- Koen and Andrew attended the European Geosciences Union meeting in Vienna. Koen presented his work on grassland phenology modeling, and chaired a session on tropical carbon dynamics. In an invited talk, Andrew presented an overview on future directions in phenological modeling. Andrew also co-chaired a session with Michael Bahn (Innsbruck) on carbon allocation at scales from plants to ecosystems, in which he presented a poster on some of the group’s recent work at Harvard Forest. Finally, Andrew sat on a panel discussion, hosted by the Nature Publishing Group, on data sharing. It was great to see colleagues and former lab members, including Trevor Keenan and Mirco Migliavacca, at the meeting.
- Morgan was awarded a National Defense Science & Engineering Graduate Fellowship! Congratulations!
- Because he couldn’t be there in person, Andrew’s presentation, “The PhenoCam Network: Contributions of the BERMS sites to continental-scale monitoring of vegetation phenology”, was delivered by Alan Barr (Environment Canada) at the Boreal Ecosystem Research and Monitoring Sites Research Workshop, which was held at the National Hydrology Research Centre in Saskatoon, Canada.
- Andrew and Don installed a new infrared gas analyzer and data acquisition system for the flux measurements at Bartlett. Once that was complete, they took advantage of spring water levels to do some packrafting on the Saco and Ammonoosuc rivers. A field sampling trip by packraft is under consideration.
- Julie has been offered an Assistant Professor position at Lesley University, beginning in September. Congratulations, Julie!
- Miriam Johnston has accepted OEB’s offer of admission to the PhD program and will be joining the lab in September. Congratulations!
- Koen and Margaret attended the Northeast Natural History Conference in Springfield. Koen organized a well-attended session on “Citizen science and public outreach in the digital age,” which Margaret kicked off with a talk on “Citizen science for natural history data processing.”
- Andrew gave a presentation, “Climate change and the effects of shifting seasons on forest carbon cycling,” at the HUCE Fellows dinner. Paul Moorcroft introduced the topic, and Steve Wofsy led the evening’s discussion. Thanks to Missy Holbrook for the invitation to speak!
- Andrew gave a presentation, “Phenology as an integrative environmental science” at the USA-NPN External Program Review Workshop.
- Morgan and Meghan were awarded NSF Graduate Research Fellowships. Congratulations to both on this fantastic accomplishment!
- Trevor’s paper, “Net carbon uptake has increased through warming-induced changes in forest phenology” has been accepted for publication in Nature Climate Change. Michael, John O’Keefe, and Andrew are coauthors. The research was funded by Andrew’s grants from NOAA’s Climate Program Office and NSF’s Macrosystems Biology program.
- The proposal by Eric Davidson, “Integrated belowground greenhouse gas flux measurements and modeling”, on which Andrew is a Co-I, was recommended for funding by USDA. The grant will support new measurements and modeling work at Howland, specifically related to CO2, CH4 and N2O fluxes from upland and wetland soils.
- Alex submitted his senior thesis, “Salmon-derived nutrient flow in an impacted southern watershed", to the OEB department. Congratulations, Alex!
- Brett and Morgan traveled to Irvine, California, to prepare samples for radiocarbon analysis of nonstructural carbohydrates. The work was done at UC Irvine's WM Keck Carbon Cycle Accelerator Mass Spectrometry Lab, where they were working with collaborators Claudia Czimczik and Xiaomei Xu.
- Andrew, Koen, Morgan, Margaret, Min and Lynda attended the annual Harvard Forest symposium in Petersham. Morgan and Koen took advantage of the gorgeous weather and got Bucky training from Lucas during the afternoon sessions (see photo). The next day, Morgan, Koen, Brett and Don returned to the forest for the monthly carbohydrate sampling on Prospect Hill Road. Brett and Koen also collected samples for a new study to look at the effects of woolly adelgid infestation on hemlock carbohydrate reserves.
- Graham Dow, a PhD student in the Bergmann Lab at Stanford, has been awarded a NOAA Climate and Global Change Postdoctoral Fellowship. He will join our lab this summer and work on the impacts of climate change and rising CO2 on stomatal development and water use efficiency.
- Meghan Blumstein, currently working with Jonathan Thompson at Harvard Forest, has been admitted to the PhD program in OEB and will join our lab in September. Congratulations, Meghan!
- Nature published a comment (“Air pollution and forest water use”) by Christopher Holmes, UC Irvine, on Trevor’s water use efficiency paper; our reply to Holmes was published online at the same time.
- Andrew gave a seminar on phenology, climate change, and phenological control of vegetation feedbacks to the climate system, at IEEE Boston’s monthly meeting, held at MIT’s Lincoln Labs.
- Dave Moore and his postdoc Francesc Motané (University of Arizona), in town for a meeting at BU, dropped by for lunch and to talk with Andrew and Min about plans for their DOE-funded data assimilation project. Min will be working on preparing phenology data sets for the analysis. The photo shows Dave, Francesc and Min in front of the HUH.
- Andrew participated (remotely) in the ACEAS—TERN (Australian Center for Ecological Analysis and Synthesis—Terrestrial Ecosystem Research Network) PhenoCam workshop that was organized by Tim Brown. Andrew gave a presentation on the history and evolution of the PhenoCam network, and highlighted some of the challenges and opportunities presented by this massive, and ever-expanding, digital image archive.
- Andrew and Don spent a beautiful day at Harvard Forest installing eddy covariance instruments on the Barn Tower. The system will measure CO2, water and energy fluxes with a footprint that overlaps that of the hyperspectral and thermal cameras, as well as other radiometric instruments mounted on the tower, and will be used to investigate relationships between phenology and physiological processes at leaf- to canopy- to ecosystem-scale.
- Lynda was awarded a Bullard Fellowship and will be in residence at Harvard Forest, working on her book Witness Tree, during the 2014-2015 academic year. Congratulations, Lynda!
- Diana Tomback, a Professor in the Department of Integrative Biology, University of Colorado Denver, was also awarded a Bullard Fellowship and will be in residence with the Richardson Lab from January to May 2015. Diana will then spend the remainder of her fellowship in residence in Petersham. Congratulations, Diana!
- Members of the lab participated in a three-day Li-Cor training workshop; the first two days focused on eddy covariance measurements of carbon and water fluxes, while the third day dealt with photosynthesis measurements using the Li-6400. Thanks to Don for helping to coordinate the sessions!
- Brett, Morgan and Don continued the monthly NSC sampling at Harvard Forest. Coring was done one day, and the team made a return visit after Prospect Hill Road had been ploughed so that they could drive Bucky out for canopy sampling.
- Xi Yang from the joint PhD program at Brown/MBL visited and gave the HUH seminar on his dissertation work at Harvard Forest. Xi is making sun-induced fluorescence measurements at the Barn Tower. We went to lunch and walked back through the yard in the midst of a yet another winter snowstorm. Shown, L to R, in front of John Harvard are: Bill Munger (SEAS), Min, Steve, Xi, Morgan, Julie, Don, Margaret, Koen and Andrew.
- Brett, Don, Koen and Andrew spent a day at Bartlett upgrading the battery bank that powers the tower measurements and getting the system back online. The weather conditions were ideal. Koen posted a video of the hike in on YouTube (watch the video).
- Brett, Morgan, Don and Andrew got a new sampling program for nonstructural carbohydrates going at Harvard Forest. We conducted a preliminary reconnaissance on a gorgeous, above-freezing, snow-free, brilliantly sunny winter day, and the first sampling was conducted later in the week under almost as ideal conditions. The new collections will enable us to estimate whole-tree budgets of nonstructural carbohydrates, including roots, stem and branch pools, and quantify how these change from month-to-month over the year. Sampling is being conducted on the major tree species, with an emphasis on red oak and white pine. During this visit to the forest, we also checked out the new walk-up tower that has been built off of Pierce Road. The photo shows Brett, Min and Morgan, and to the right behind Morgan you can see the new NEON tower as well.
- Andrew and Mariah welcomed their daughter, Alatna, into the world. Her application to the Fluxnet Young Scientists Group is pending.
- Don has a new eddy covariance flux system up and running in the lab. We will be installing the instruments on the Barn Tower as soon as the weather warms up a bit. We are particularly interested in relating the measured latent and sensible heat fluxes to thermal camera imagery of the canopy, and the CO2 fluxes to phenological and physiological data from the hyperspectral camera imagery.
- We celebrated the 10th anniversary of the Bartlett Experimental Forest AmeriFlux tower – the first flux data were recorded at 330 pm on January 7, 2003. Unfortunately, coinciding with this monumental anniversary, the solar-powered battery bank on site has finally worn out and can no longer hold a charge. New batteries have been ordered and will be installed soon.
- Julie got the year off to a great start, as her paper (with Trevor, Dave Hollinger, and Andrew as coauthors) on methane fluxes at Howland was accepted for publication in Geophysical Research Letters on January 2!
- Brett has been offered a faculty position at Bates College and will be starting in August 2014. Congratulations, Brett!
- Just before the Christmas Holiday, we had the annual PhenoCam project meeting. Joining the regulars from Harvard and BU, collaborators Robert Pless visited from WUSTL, and Tom Milliman and Steve Frolking came down from UNH.
- Steve’s final project for CS109, a phenology forecasting webpage (leaftime.net), was was nominated for and won one of three "best in show" awards at the final project showcase. Congratulations!
- Former postdoc Trevor Keenan visited the lab, en route from the AGU meeting to spending the Christmas holidays with his family in Ireland.
- Andrew went to Denmark for a short visit to the IT University, Copenhagen. He served as external examiner on the successful PhD defense by Joel Granados (dissertation title: “Computer aided analysis and collection of phonological image series”), and gave a seminar on the PhenoCam project to the lab group of Joel’s advisor, Philippe Bonnet. He also caught up with former lab visitor Andreas Westergaard-Nielsen.
- While in San Francisco, Andrew gave a seminar at Planet Labs, Inc., a private company that is in the process of building the world’s largest fleet (28) of Earth imaging satellites to continuously image the planet’s surface at high spatial resolution.
- Andrew, Julie, Steve and Dmitri traveled to San Francisco for the annual AGU meeting. Andrew gave an invited talk on modeling the seasonality of photosynthesis using PhenoCam data, while Julie spoke on her methane work at Howland, Steve presented a poster on his UAV phenology surveys at Harvard Forest, and Dmitri presented a poster on his senior thesis work with the AMOS archive. Lynda also attended the meeting. Andrew and Julie ran in the Wednesday morning 5K “Fun Run”. The photo shows Andrew with colleagues Paul Stoy, Dario Papale and Denis Loustau at the starting line. Overall the meeting was a great opportunity to catch up with friends from across the country and around the world (former postdocs Trevor, Oliver, and Youngryel were all at the meeting), and return to favorite local spots like Blue Bottle Coffee, the Tunnel Top bar, and the El Norteno taco truck.
- Trevor’s paper, “Tracking forest phenology and seasonal physiology using digital repeat photography: a critical assessment,” which has 2011 Harvard Forest REU interns Bridget Darby and Libby Felts as coauthors, was accepted for publication in Ecological Applications. This paper offers the first published explanation for the mysterious “green spike” observed in late spring in time series of deciduous forest canopy greenness. Trevor’s analysis shows that the spike is driven by changes in leaf area in conjunction with simultaneous changes in the color of individual leaves.
- Brett gave a seminar at Bates College.
- Andrew visited Rutgers University, Newark and gave a seminar on the PhenoCam project.
- We had the annual Lab Retreat at the Forest Service’s Bartlett Experimental Forest Field Station. We toured the research site on Friday morning and spent Friday afternoon doing a workshop with Lynda on “Scientists as communicators: How and why to do this better.” The weather on Saturday was gorgeous and we went for a hike up Mt. Stanton in the morning. The Bomblies Lab arrived at lunchtime for the First Annual Inter-Lab Capture the Flag Smackdown. Everyone had a great time, and there were no serious injuries. Special thanks to Don for his brilliant planning and logistics.
- Steve passed his qualifying exam. Congratulations, Steve!
- Julie spoke in the Biogoesciences seminar series at BU.
- Min Lee submitted his OEB senior thesis, “Impact of diffuse radiation measurements on modeling carbon budgets: A model-data fusion experiment at Bartlett Experimental Forest.” Congratulations, Min!
- The review paper, “Nonstructural carbon in woody plants”, which was led by Mike Dietze at BU and featured contributions from Andrew and Mariah, was published online and will appear in the 2014 Annual Review of Plant Biology.
- A visit by Andrew and Mariah to Durham, NH, coincided with the Forest Service’s annual Thanksgiving Potluck. They helped Dave Hollinger make liquid nitrogen ice cream, which was a huge hit all around.
- Construction on the new NEON tower at the Bartlett Experimental Forest wrapped up.
- Andrew returned to Yale’s School of Forestry and Environmental Studies, where he completed his PhD in 2003, and gave a seminar describing some of the ongoing projects in the lab.
- Margaret Kosmala, who will join the lab as a new postdoc in January, visited to learn more about the PhenoCam project.
- Koen presented his work on “Central Congo Basin Diameter-Height relationships and canopy structure, a regional assessment” in the HUH seminar.
- Koen came back from Belgium and re-joined the lab as a Research Associate.
- Marcus Reichstein, Mirco Migliavacca and Nuno Carvalhais visited from the Max Planck Institute for Biogeochemistry in Jena, Germany. Markus gave the HUH seminar (“Terrestrial climate-carbon cycle extremes: quantification, association with climate, and implications”) before Andrew took the visitors up to Bartlett for a three-day mini-workshop. In addition to visiting the Bartlett tower, the group enjoyed a hike to the top of Mt. Willard, in Crawford Notch, and some fine Maine lobster.
- Andrew spent a week in Japan as the guest of Nobuko Saigusa (National Institute of Environmental Studies, Tsukuba). Andrew gave a seminar at the Institute, and spoke at the workshop celebrating the 20th anniversary of the Takayama research site. There were also visits to the Mase rice paddy flux tower, the Fuji Hokuroku larch plantation flux tower, thermal springs, and the famous Matsumoto castle.
- Andrew, Steve, Don and Andreas attended the NEON/PhenoCam workshop in Boulder, which Andrew helped to co-organize. Andrew presented an overview of the PhenoCam network (“Lessons learned, challenges and opportunities”), while Don spoke about new opportunities in near-surface remote sensing (thermal and hyperspectral imaging), while Steve presented his work on evaluating MODIS satellite products with PhenoCam data, and collecting phenological information from a UAV. Former lab members Oliver Sonnentag and Mirco Migliavacca were also in attendance, as were collaborators Sandra Henderson, Dave Moore, and Xi Yang.
- Andreas Westergaard is visiting the lab from Copenhagen, Denmark, where he is a PhD student working on phenology and climate change in Greenland.
- Erle Ellis and Jonathan Dandois, from the University of Maryland, Baltimore County, visited the lab. Jonathan gave a presentation in lab meeting on his thesis work, which uses imagery from an unmanned aerial vehicle to characterize canopy structure in three dimensions.
- Don traveled to the Ordway-Swisher Biological Station in Gainesville, FL for NEON’s annual members' meeting.
- Don went to Howland Forest to help Mariah with isotopic CO2 sampling. En route they stopped for a visit with Smokey the Bear.
- Margaret Kosmala will be joining the lab in January as a postdoc on the PhenoCam crowdsourcing project, which is in collaboration with NEON/Project Budburst. Margaret is finishing up her PhD at the University of Minnesota and has previously worked on the Snapshot Serengeti project.
- Koen Hufkens will be joining the lab as a Research Associate in November. Koen will be working on the PhenoCam project, specifically with regard to modeling and analysis of phenology in different ecosystem types. Koen was previously a postdoc with Mark Friedl at BU.
- Brett went to California to visit collaborators Xiaomei Xu and Claudia Czimczik at UC Irvine. Brett learned the UCI protocols for extracting nonstructural carbohydrates for radiocarbon analysis, and also learned about converting samples to graphite so that they can be run on the AMS.
- Brett and Morgan collected samples from a hemlock woolly adelgid experiment in Rhode Island to investigate how adelgid infestation affects sapling carbon balance and carbohydrate reserves.
- Don spent a couple of days in Durham, NH, for tower-climbing training with Bob Evans at the USDA Forest Service.
- Alex Cunha is writing a senior thesis on the role of salmon in forest nitrogen cycling; he conducted fieldwork in the Klamath River watershed this past summer. Building on two summers as an REU at Harvard Forest, Dmitri Ilushin is writing a senior thesis on extracting phenological information from the 20,000 cameras in the AMOS archive.
- Ailene Ettinger, a recent PhD graduate from the University of Washington, visited the lab and gave the weekly HUH seminar. She spoke about her dissertation work on species ranges and climate change.
- Min Lee is spending his last semester as a Harvard College senior in Dhaka, Bangladesh.
- Julie is teaching a class in geochemistry at Boston University this semester.
- In a webinar presented to Harvard Forest LTER “Schoolyard” program participants, RET intern Kate Bennett showed how data from PhenoCam could be integrated into K-12 lesson plans on phenology and climate change.
- Another academic year began at Harvard!
- Michael attended the ESA meeting in Minneapolis and presented a poster, “Integrating Phenocam and USA National Phenology Network continental-scale approaches into NEON phenology data products”
- The Harvard Forest Research Experience for Undergraduates program came to a close. The students had a productive summer, conducting research on innovative phenology monitoring methods. Dmitri Ilushin will be returning in the fall to Harvard to complete his senior year, and will write a thesis based on his REU work. Arturo Martinez will be returning to Carnegie Mellon University to begin his junior year of college
- Brett and Morgan have the new wet lab set up and are now processing samples for nonstructural carbohydrate analysis!
- Andrew and Mariah spent a week at the Rocky Mountain Biological Laboratory in Gothic, Colorado. They also visited the giant petrified redwood stumps at the Florissant Fossil Beds National Monument.
- Michael has accepted a new job with the Foreign Agricultural Service and will be leaving the lab in September.
- Andrew was promoted from Assistant to Associate Professor.
- Michael, Andrew, and former postdoc Oliver Sonnentag contributed to the Phenology Monitoring Protocol published by the National Parks Service in collaboration with the Northeast Temperate Network and the USA-National Phenology Network. The report, which includes protocols for camera-based phenological monitoring, is available online through the NPS
- Following in the footsteps of Mariah, Steve, and Michael, Don attended the Niwot Ridge “Flux Course”, run by Dave Moore and Russ Monson (Arizona), and Paul Stoy (Montana State)
- Michael attended the workshop on Sensor Needs for Terrestrial Biochemistry Measurements" which was convened at Argonne National Laboratories. The meeting assembled a diverse group of ecologists, remote sensing scientists, modelers, sensor designers and IT professionals to brainstorm on the future of sensor networks.
- Mariah’s paper on the Milton Fund project, “Age, allocation, and availability of nonstructural carbon in mature red maple trees”, was accepted for publication in New Phytologist. Trevor and Andrew are coauthors.
- The paper, “Increase in forest water-use efficiency as atmospheric carbon dioxide concentrations rise”, by Trevor (lead author), Andrew, and NOAA project collaborators, was published by Nature on July 18. A “News and Views” commentary piece by Belinda Medlyn and Martin De Kauwe was published simultaneously. Media coverage was extensive, including the New York Times and Time magazine.
- The proposal led by Dave Moore (Arizona), “Estimating carbon flux and storage: Constraint of the Community Land Model using observations at different temporal scales” was recommended for funding. Andrew is a Co-investigator on the project, which will involve the use of PhenoCam and tree ring data, in addition to tower fluxes, in a multiple-constraints model-data fusion exercise.
- Chris Still (OSU), Mike Goulden (UCI Irvine) and Brent Helliker (Penn) visited for a week of field work at Harvard Forest with Andrew, Don, Michael and Dmitri. We installed a second thermal camera and a sonic anemometer on the barn tower, measured leaf temperatures with fine-wire thermocouples, and went on several epic hikes through the woods. The photo shows, from L to R, Brent, Don, Michael (Toomey), Mike (Goulden), Chris and Dmitri.
- Dmitri, Don, Michael and Andrew spent an afternoon learning how to pilot Bucky, the canopy access lift at Harvard Forest. The photo, from one of the barn tower webcams, shows Michael and Bucky wizard Lucas Griffin.
- Andrew, Michael and Josh Gray attended the NSF Macrosystems Biology PI meeting in Arlington, VA.
- Andrew’s supplement proposal to NSF, which involves collaboration with NEON’s citizen science and outreach arm to crowd-source analysis of PhenoCam imagery, was recommended for funding.
- We had an end-of-semester pizza party to say goodbye to Trevor (moving on to a research position in Australia), Anika (teaching in Ukraine and China), and Bridget (starting a PhD at Cornell), and to welcome new postdocs Min, Don and Brett. Shown in the photo: Anika, Mariah, Bridget, Trevor, Don, Min Chen, Steve, Eli, Min Lee, Mike, Josh.
- Andrew, Trevor, Julie and Mariah met up with the rest of the Howland (PI Dave Hollinger) team for an annual project meeting in Durham.
- The 2013 Summer Program in Ecology kicked off at the Harvard Forest. Dmitri Ilushin (Harvard College ’14) will be working with Michael and Arturo Martinez (Carnegie Mellon University). The photo shows Arturo, Steve, Dmitri and Michael on the front steps of Shaler Hall.
- Steve was awarded a NASA Earth and Space Science fellowship for his proposal, “Improving Predictions of Terrestrial Carbon, Water, and Energy Cycling Using Novel Plant Phenology Observation and Modeling”. Congratulations, Steve!
- PhenoCam collaborator Robert Pless (Washington University) was in town and participated in our biweekly PhenoClub meeting.
- Andrew collected spring imagery from collaborator Motomu Toda’s time-lapse hemispherical camera, which was installed at Bartlett in March. The pictures show the canopy on April 22, May 7, and May 19.
- Julie attended the DOE Terrestrial Ecosystem Science PI meeting in Potomac, MD, and presented some of her work on CH4 fluxes at Howland Forest. Also in attendance were collaborators Dave Hollinger (USDA FS, and PI of the Howland project) and Kathleen Savage (WHRC).
- NOAA-funded work led by Trevor has been accepted for publication in Nature. More details will be posted when the press embargo is lifted!
- Andrew took his SLS 25 class on a tour of the Harvard Forest—it was a beautiful spring day and the leaves were just starting to come out. The photo shows students Kyle Randall and Julie Chang on top of the Hemlock tower with Andrew.
- Andrew was nominated for the Star Family Prize for Excellence in Advising, and received a certificate at a reception hosted by Harvard’s Advising Programs Office.
- Anika finished her senior thesis on extracting "camera NDVI" from PhenoCam imagery, and submitted it to SEAS. Congratulations, Anika!
- Collaborator Paul Schaberg (USDA FS, Burlington, VT) visited and presented his work on acid deposition, soil nutrients, and forest health in the HUH Seminar. Shown in the photo with John Harvard are, L to R: Myroslava Khomik (visiting from Clark U for the day), Trevor, Paul, Mariah and Julie.
- OEB faculty member Kirsten Bomblies and Levi Yant visited the Bartlett Experimental Forest with Andrew and Mariah.
- Trevor visited Yale's School of Forestry & Environmental Studies and presented some of his recent work on trends in carbon uptake at AmeriFlux sites in the northeastern US.
- Don Aubrecht, a PhD student in SEAS with David Weitz, will join the lab as a postdoc in July to work on the canopy thermal imaging project. Welcome, Don!
- Andrew is coauthor on the commentary by Scott Ollinger, "Nitrogen cycling, forest canopy reflectance and emergent properties of ecosystems," accepted for publication in PNAS.
- Steve had a successful UAV flight at Harvard Forest. The photo shows the area around the EMS tower, with the boardwalk and instrument sheds being clearly visible.
- Andrew and Mariah did some field work at Bartlett, installing automated band dendrometers as well as a 4-channel LED-based canopy reflectance sensor supplied by former postdoc Youngryel Ryu.
- Brett Huggett, a PhD student in OEB with Missy Holbrook, and Andrew's TF for SLS 25, will be joining the lab as a postdoc in June to work on nonstructural carbohydrates in forest trees. Welcome, Brett!
- Trevor, Mariah and Andrew attended the workshop, "Climate Extremes and Biogeochemical Cycles", in Seefeld, Austria. The meeting was followed by a weekend exploring high-altitude ecosystems, organized by Markus Reichstein's group from MPI Jena (shown, left to right: HaPe Schmid, KIT; Markus, Trevor, and Mariah). Trevor then went on to a workshop hosted by his new colleagues in Australia, while Mariah and Andrew went to the European Geosciences Union meeting in Vienna, where they presented posters on some of the lab's recent work on nonstructural carbohydrates in forest trees. A Thursday-night get-together at their apartment in Stephansplatz was well-attended by North American and European scientists.
- Brett Raczka's (Penn State) NACP paper, "Evaluation of continental carbon cycle simulations with North American flux tower observations", on which Trevor and Andrew are coauthors, has been accepted for publication in Ecological Monographs.
- Morgan Furze, who completed her BA at Bucknell, has been admitted to the OEB PhD program and will be joining the lab this summer. Welcome, Morgan!
- The lab's paper "Climate change, phenology, and phenological control of vegetation feedbacks to the climate system" (Richardson et al., AFM 169:156-173; Download the paper) was ranked at the top of the "Hottest Articles" in the journal Agricultural and Forest Meteorology for the period October-December 2012.
- Andrew, Michael and Don installed some new instruments on the Barn Tower at the Harvard Forest, including a Surface Optics hyperspectral imaging camera and a FLIR thermal infrared camera. Both instruments will capture images every half-hour, and we are particularly interested in comparing thermal and hyperspectral measures of plant stress as the growing season progresses. The first image obtained in the field from the FLIR camera is shown below; you can see the warm tree trunks and cooler evergreen foliage against the cold, snow-covered ground. Andrew is the bright white humanoid seen just left of center towards the bottom of the picture. The thermal IR work is funded by a grant from NSF's Macrosystems Biology program (PI: Chris Still, OSU).
- Trevor visited Clark University, hosted by the Williams Lab., and gave a seminar on carbon and water cycling in the terrestrial biosphere.
- Trevor, Michael, Mariah and Andrew attended the 24th Annual Harvard Forest Ecology Symposium. Michael gave a talk on some of his work tracking individual-tree phenology at the Barn Tower using PhenoCam and TetraCam data.
- Fiona finished her senior thesis, "The Importance of Age, Competition and Succession in Acer rubrum Decline in a Northeastern Mixed Deciduous Forest" and submitted it to the OEB department. Congratulations, Fiona!
- Dave Hollinger (USDA Forest Service, Durham NH) visited the lab and gave the HUH seminar. Dave presented his recent work on isotopic CO2 measurements at the Howland Forest, Maine, with a specific focus on using 13CO2 to understand physiological processes related to photosynthesis, respiration, and water use efficiency. Shown on the way to lunch: Rick Wehr, Michael, Scott Saleska (Arizona), Kathleen Savage (WHRC), Mariah, Mark Friedl (BU), Trevor, John Harvard, Dave, Bill Munger, and Julie.
- Mike, Eli, Steve and Josh presented the concept behind PhenoCam at the Harvard Museum outreach series "Stories Through Time". It involved a number of different labs from around Harvard talking about primarily biological research in formats accessible to children of all ages. They compiled videos from Boston Common, Harvard Forest and the famous beancam for display on a large TV as well as setting up a Stardot camera attached to a monitor.
- Trevor visited BU and gave a seminar on 'Merging models and data to improve our understanding of terrestrial carbon cycling' in the Earth and Environment Seminar Series
- Julie has progressed from Postdoc to Research Associate status. Congratulations Julie!
- Neil Pederson, from the Tree Ring Lab at Columbia's Lamont-Doherty Earth Observatory, visited the lab and delivered the weekly HUH seminar. Neil presented work on tree rings and climate, and showed some results from New England (including "zombie maples" at Harvard Forest), Mongolia, and the Southeastern U.S. After the seminar, a large group went out for the usual Indian buffet lunch (shown left to right are Julie, Michael, Mariah, Trevor, Neil, John Harvard, and Zan Stine of EPS). Neil, Trevor, Mariah and Andrew then discussed opportunities for bringing some tree ring analyses into the lab's work on nonstructural carbohydrates and carbon allocation.
- Andrew's footage from the Harvard BeanCam took the World Wide Web by storm… images have been assembled into the GIF video shown at right.
- Min Chen (Purdue) visited the lab and presented a short overview of some of his recent PhD work. Min will be joining the lab as a postdoc in June.
- Trevor attended the NACP All-Investigators Meeting in Albuquerque, NM.
- The Bartlett AmeriFlux tower is 9 years old! Who ever would have guessed we'd still be making measurements in 2013?!
- Trevor accepted a position at Macquarie University in Sydney, Australia, and will be moving there in June.
- New papers! Several papers on which Andrew is coauthor were recently accepted for publication. Marco Archetti's paper on climate change impacts on autumn leaf coloring will be coming out soon in PLOS ONE (John O'Keefe is also a coauthor). Three other papers are now out in Agricultural and Forest Meteorology: Eli Melaas's paper on modeling spring onset using data derived from the FLUXNET La Thuile database, Alan Barr's NACP paper on a change-point detection scheme for u* filtering of nocturnal flux data, and the paper by Jan Pisek and Oliver Sonnentag on leaf inclination angle distribution. Congratulations to the lead authors!
- The Harvard Crimson announced its picks for the "Gen Ed Course Trailer Academy Awards". The short for SLS 25 ("Trees, Forests and Global Change", which Andrew co-teaches with Don Pfister), won the award for "Best Scenic Design". The trailer (here) was produced by Mike Oliveri.
- The Richardson Lab was well-represented at the AGU meeting in San Francisco. Michael, Andrew and Trevor gave talks, and there was a lot of interest in the nonstructural carbohydrates session that Mariah and Andrew organized with Rodrigo Vargas and Claudia Czimczik. Andrew and Mariah were among 250 conference attendees who got up early on Wednesday morning for the annual 5k Fun Run. Cold rain and near-darkness did not dampen their spirits. The meeting was a great opportunity to catch up with old friends from around the world. The photo shows Andrew and Rodrigo with friend (and AGU president) Mike McPhaden.
- Andrew helped to design an exhibit on wood for display in the Northwest Labs building. The project, which highlights various wooden objects in the HUH collections, was led by Lisa DeCesare (HUH Botany Library). Dave Orwig and Scot Wiinikka (Harvard Forest) provided the beautiful "cookies" that can be seen in the photograph. Andrew's text explains some of the ways in which the Richardson Lab uses wood samples to learn more about forest productivity and health.
- Chris Still's (OSU) proposal, "Thermal controls on ecosystem metabolism and function: scaling from leaves to canopies to regions" was funded by NSF's Macrosystems Biology program. Andrew is a Co-I on this grant, which will support new measurements with a thermal IR camera mounted on the Barn Tower.
- Andrew, Thomas Hilker (OSU), Trevor, Michael, and Don Aubrecht (Harvard SEAS) spent two days at the Harvard Forest. We brought down Thomas's AMSPEC system from the top of the barn tower, and installed a set of automated band dendrometers for continuous measurements of stem diameter.
- Andrew and Michael led a tour of the Harvard Forest for the OEB G1 class, who were at the forest for their annual Fall Retreat. This picture shows Andrew and the students in front of Fisher House.
- Andrew gave the OEB Departmental Seminar on Halloween. His talk was titled “Impacts of global change on forests, from organisms to ecosystems”
- We narrowly missed Hurricane Sandy. No major damage was observed at our research sites, although the associated strong winds appear to have brought down almost all of the remaining leaves at Harvard Forest.
- Michael Bahn visited from Innsbruck, and gave the HUH seminar on his alpine grassland research. Pictured with John Harvard are Michael (Bahn), Trevor, Michael (Toomey), and Julie.
- We took Michael to the Harvard Forest for a tour, where he also helped Andrew and Michael (Toomey) collect samples for a new nonstructural carbohydrate project. Additionally, Michael visited the Arnold Arboretum while here.
- The Lab had its annual retreat at the Bartlett Experimental Forest in mid-October. The two-day event featured a forest tour on Friday morning, a workshop session on Friday afternoon (pictured, L to R, are Trevor, Anne, Julie, Steve and Michael), TacoFest on Friday evening, and several intensely competitive games of Capture the Flag on Saturday morning.
- Andrew's paper on nonstructural carbohydrate reserves in forest trees in New England, which describes 5 years of work on this topic, and which merges long-term data on seasonal dynamics, radiocarbon measurements of carbohydrate ages, and sophisticated inverse modeling, was accepted for publication in New Phytologist. Trevor and Mariah are coauthors on the paper.
- Koen Hufkens (former BU postdoc and close collaborator) was back in town for a visit — it was great to catch up!
- Trevor traveled to Woods Hole to attend the FORECAST conference, organized by Yiqi Luo's group in Oklahoma, and sponsored by NSF's RCN program. He presented his 'Rate my data' project, which will be appearing in print soon in Ecological Applications.
- Michael delivered the HUH seminar, presenting his work on phenology and CO2 fluxes based on analysis of PhenoCam and eddy covariance data.
- The annual PhenoCam project meeting was held in Cambridge. After a day-long session discussing recent progress and plans for the coming year (Andrew volunteered to take the lead on designing a project T-shirt), the team enjoyed refreshments at the Thirsty Scholar. Shown left to right are Josh Gray (BU), Cecilia Olsson (visiting from Lund, Sweden), Chris Round (Harvard), Eli Melaas (BU), Michael, Steve, Austin Abrams (WUSTL), Robert Pless (WUSTL), Steve Frolking (UNH), and Tom Milliman (UNH).
- Andrew and Michael attended the Phenology 2012 conference in Milwaukee. Andrew talked about forecasting shifts in autumn phenology driven by climate change, while Michael presented his work on the seasonality of PhenoCam-derived greenness in relation to canopy-level photosynthesis. Michael also attended the 2nd International Workshop on the Validation of Satellite-based Land Surface Phenology Products.
- Andrew's invited review paper, "Climate change, phenology, and phenological control of vegetation feedbacks to the climate system," was accepted for publication in Agricultural and Forest Meteorology. Trevor, Mirco, Oliver, Youngryel and Michael are co-authors on this work.
- Andrew started teaching a new class, OEB 210: Writing Scientific Papers.
- Anika Petach (Harvard College '13) joined the lab - she will be working on a thesis project to develop methods for calculating NDVI-style indices using visible and near infrared imagery from the PhenoCam network.
- Mark Friedl is now in residence at the HUH as a Harvard Forest Bullard Fellow. Mark delivered the first HUH seminar of the year, "Seeing the Forest for the Trees: Observing and Modeling Phenology Across Multiple Scales".
- Anne Kakouridis joined the lab as a G1 - welcome, Anne!
- Trevor is in Cambridge, England, for a month to work with Mat Smith and colleagues at Microsoft Research, working on developing their global carbon cycle model.
- Andrew visited NEON's offices in Boulder to discuss camera protocols and opportunities for NEON-PhenoCam collaborations
- Trevor's paper "Rate my data: quantifying the value of ecological data for the development of models of the terrestrial carbon cycle" was accepted for publication in the journal Ecological Applications.
- Thanks to this years fantastic REU students, who finished their projects at Harvard Forest and returned home after a great summer research experience. Read their blog about the summer here.
- Trevor, Min, Steve and Andrew attended the 49th Annual Cooperators Meeting of the Hubbard Brook Ecosystem Study. The weather in the White Mountains was perfect (great swimming in Mirror Lake!), and we also worked in a side-trip to the Bartlett flux tower for a tour and some maintenance work with Bob Evans from the Forest Service in Durham.
- Andrew and Mariah visited the ancient bristlecone pines (Pinus longaeva) growing at high elevation in California's White Mountains. The picture, taken at 11,500 ft, shows Andrew in front of the Patriarch Tree, the world's largest-known individual of this amazing species.
- Trevor attended the Gordon Conference on Biogenic Hydrocarbons and the Atmosphere and gave a talk on using data-mining and model-data fusion to uncover patterns in Isoprene fluxes between forest canopies and the atmosphere.
- Using model-data fusion techniques, Trevor showed that circadian controls of global Isoprene emissions may not be as strong as previously suggested. Read the article in Nature Geoscience here
- The NSF LTER proposal ("HFR LTER V: New Science, Synthesis, Scholarship, and Strategic Vision for Society") led by PI David Foster, on which Andrew is a Co-PI, was recommended for funding. This grant will provide six years of support for the Long-Term Ecological Research program at Harvard Forest.
- The NSF FSML proposal ("FSML: Walk-up towers for research, education, communication, and outreach at the Harvard Forest") led by PI Aaron Ellison, on which Andrew is a Co-PI, was recommended for funding. The grant will support the construction of two new walk-up canopy access towers, each of which will be instrumented with a variety of meteorological and radiometric sensors.
- Andrew's proposal to DOE ("Improving models to predict phenological responses to global change"), was recommended for funding. The grant will support installation of a dozen PhenoCams at the SPRUCE climate change experiment in northern Minnesota, and modeling analyses that use data derived from the camera imagery.
- Koen, Min and Andrew attended the NEON groundbreaking ceremony at Harvard Forest
- Steve and Michael attended Erle Ellis's (UMBC) "Ecosysnth" workshop in Baltimore. The Ecosynth project uses digital cameras mounted on UAVs to record information with which three-dimensional maps characterizing vegetation structure can be generated.
- Andrew attended a tour of Harvard Forest, led by David Foster, with President Faust
- Trevor and Andrew attended a meeting of the NOAA Climate Program Office's "Atmospheric Chemistry, Carbon Cycle, and Climate Working Group" in Boston and Andrew did a presentation on "Ecosystem responses to climate change"
- Koen was back in town for a visit and joined our monthly NSF MSB "PhenoClub" meeting, after which we all went out to dinner at Casa Portugal in Inman Square
- Min Lee (Harvard College 2014) joined the lab as a HUCE summer research intern. Min will work with Trevor on modeling and analysis of CO2 flux data from some of our research sites in the northeastern US.
- Trevor, Julie, Min and Andrew traveled north to the Howland Forest to install the new Picarro fast-response CO2/CH4/H2O analyzer. It was the first visit to the site for Min and Julie. In addition to experiencing the legendary Howland mosquitoes, they had the opportunity to meet some of our other collaborators: shown in the first photo are (L to R) Bob Evans (USDA FS), Min, Trevor, Julie, John Lee (U Maine), Holly Hughes (WHRC), and Dave Hollinger (USDA FS). In the second photo, Dave is seen showing off his vacuum line, which will be used to trap soil-respired CO2 for radiocarbon analyses, to Trevor. Our work at Howland is supported by DOE's TES program.
- Trevor and Michael took visitor Sebastian Wolf (a Marie Curie fellow and Berkeley postdoc, in town for the AMS meeting) on a three-day death march through the Pemigewasset Wilderness Area in the White Mountains
- Trevor, Michael and Steve presented work at the AMS conference on Agricultural and Forest Meteorology, which was held in Boston. It was great to catch up with friends and colleagues at the conference. Trevor coordinated a team meeting to discuss some exciting preliminary results of our NOAA-sponsored project on long term trends in CO2 uptake at AmeriFlux sites in the northeastern US.
- Andrew and Steve joined Eli, Mark, and new BU postdoc Josh Gray for the REU Kick-Off at Harvard Forest to welcome the new crew. Pictured (left to right) are Steve, Dmitri Ilushin (Harvard), Hannah Skolnick (Columbia), Erin Frick (Mt Holyoke), Jose Luis Rugelio (Lincoln), Josh, Sascha Perry (Lincoln), Mark, and Eli. Everyone is looking forward to a great summer in Petersham!
- Andrew and incoming PhD student Anne Kakouridis traveled to northern Minnesota to tour the future SPRUCE climate change experiment, to be conducted at the Marcell Experimental Forest, with hosts Paul Hanson (ORNL) and Stephen Sebestyen (USDA FS).
- Andrew made a pilgrimage to Sequoia-Kings Canyon National Park to view General Sherman, a giant sequoia (Sequoiadendron giganteum) and the world's biggest (in terms of volume) known tree
- Michael attended a NSF-funded Research Coordination Network workshop hosted by the USA National Phenology Network in Milwaukee, Wisconsin
- Michael started using the six-channel Tetracam MCA for spectral imaging of the Harvard Forest canopy. Michael's imagery will be used to track the decline of the hemlock stand as the hemlock woolly adelgid (HWA) infestation continues to develop, and to monitor the development and senescence of the deciduous canopy surrounding the Barn Tower.
- Oliver returned to Cambridge for a visit in early May. During the visit, Trevor, Andrew and Oliver worked together on analyses of data collected by 2011 REUs Bridget Darby and Libby Felts.
- Mirco's paper on uncertainties in phenological modeling, and the influence of phenological uncertainty on forecasts of climate change impacts on the carbon cycle, was accepted for publication in Biogeosciences!
- Andrew and Mariah attended the European Geosciences Union meeting in Vienna. Andrew presented work on the age and seasonal dynamics of carbohydrate reserves in temperate trees.
- We installed a prototype 6-channel imaging sensor on the Barn Tower.
- Trevor and Michael climbed the Harvard Forest Barn tower to prepare it for the spring season.
- Julie Shoemaker (PhD, Harvard OEB) joined the lab as a part-time postdoc to work on analysis of the CH4 flux measurements from Howland Forest.
- Anne Kakouridis (University of Utah) was admitted to the OEB PhD program and will be joining the Richardson lab in September
- Thomas Hilker visited from NASA, and he and Andrew spent a weekend at the Harvard Forest re-installing the AMSPEC instrument for this year's growing season. The weather was unseasonably warm and some trees were already beginning to flower in mid-March
- Andrew and Michael attended the NSF Macrosystems Biology meeting in Boulder, CO
- Koen's paper on the unusual spring weather in 2010, "Ecological impacts of a widespread frost event following early spring leaf-out" was accepted for publication in Global Change Biology
- Trevor had two papers accepted for publication in Global Change Biology: "Using model-data fusion to interpret past trends, and quantify uncertainties in future projections, of terrestrial ecosystem carbon cycling" and "Terrestrial biosphere model performance for inter-annual variability of land-atmosphere CO2 exchange"
- Steve and Libby shipped out over a dozen cameras to new PhenoCam network collaborators
- Andrew met with the freshman seminar class at Harvard Forest and gave a talk on phenology and climate change
- We had various trips to the Bartlett field site for maintenance and battery charging (and some Nordic skiing). The weather was generally mild and the snow was unusually thin.
- In January, Steve attended a course on the Fundamentals of Ecosystem Ecology, led by the scientists of The Cary Institute of Ecosystem Studies. He learned about the history and diversity of ecosystem studies, nutrient cycling in terrestrial and aquatic systems, and the energetics of primary and secondary production. Steve hopes to use this knowledge to provide context to his research on the phenology of terrestrial ecosystems.
- The Richardson Lab was well-represented at the AGU Fall Meeting in San Francisco. Of particular note were the poster presentations by 2011 REUs Bridget Darby (undergrad at BU) and Libby Felts (undergrad at Harvard).
- Andrew and collaborator Dave Moore (University of Arizona) were grateful for this photo opportunity with Union President Mike McPhaden.
- Andrew was coauthor on Xuhui Lee's paper which appeared in Nature: "Observed increase in local cooling effect of deforestation at higher latitudes" (Nature 479: 384-387)
- The lab traveled to Durham, NH, for tower climbing safety training with Bob Evans of the USDA Forest Service. Pictured (L to R) are Andrew, Steve, Michael, Trevor and Bob.
- Andrew and Steve Wofsy together discussed forests and the carbon cycle in a public lecture at the Museum of Natural History. Check out the media coverage here: Harvard Gazette
- Koen's webcam/MODIS paper "Linking near-surface and satellite remote sensing measurements of deciduous broadleaf forest phenology" was accepted for publication in Remote Sensing of Environment
- We said farewell to our visitor, Shutao Chen, who returned to China
- Andrew and Koen attended the PhenoAlp meeting in Torgnon, Italy. Andrew presented a lecture on the PhenoCam project, and Koen gave a talk on his work the peculiar New England weather in Spring 2010, and the impact of an extremely warm spring, followed by a hard frost, on ecosystem carbon balance and community dynamics. The photo shows Koen, Edoardo Cremonese (meeting organizer), Mirco Migliavacca (former lab visitor), and Andrew, at Lago Bleu, with Monte Cervino (Italian name for the Matterhorn) in the background.
- Andrew's NACP phenology paper, "Terrestrial biosphere models need better representation of vegetation phenology: Results from the North American Carbon Program Site Synthesis," was accepted for publication in Global Change Biology
- Andrew and Trevor attended the Carbo-Extreme meeting in Montpellier, France. Andrew serves on the advisory board of the project, and Trevor is participating in the project's multi-site model-data fusion experiment. The meeting was hosted by Serge Rambal and Richard Joffre and included a field trip to the Puéchabon forest, as well as some fine food and drink, and nice opportunities to catch up with old friends.
- Oliver's "CamCom" paper, "Digital repeat photography for phenological research in forest ecosystems," was accepted for publication in Agricultural and Forest Meteorology. Coauthors include Cory Teshera-Sterne and Adam Young, both participants in the Harvard Forest 2010 REU program
- Andrew, Mariah and Eeegon wrapped up field sampling for the Milton Fund TNC project, measuring stem respiration and collecting stem-respired CO2 for 14C analysis, as well as tree cores for ring counts and TNC analyses, from red maple trees at Bartlett and Harvard
- Hurricane Irene came through our field sites: we received more than 140 mm of rain in 24 h at Bartlett, and winds in excess of 190 km/h were recorded nearby on Mt. Washington, but our damage appears to have been limited to a blown wifi access point
- We said farewell to Oliver, who is starting a faculty position at the Université de Montréal
- Steve Klosterman joined the lab as a "G1" PhD student - Welcome, Steve!
- Andrew held a kick-off meeting for the NSF Macrosystems PhenoCam project in Cambridge. In addition to our collaborators from BU and UNH, we had Robert Pless join us from Washington University, St. Louis, and new postdoc (starting November 2011) Michael Toomey joined from UCSB. Shown left to right are Steve Frolking (UNH), Andrew, Mark Friedl (BU), Robert, Michael, Oliver, Tom Milliman (UNH), Steve, and Koen
- Andrew visited the National Ecological Observatory Network head offices in Boulder and gave a seminar on the PhenoCam project
- Andrew's proposal to NOAA's Climate Program Office, "Improving process-level understanding of the factors underlying long-term trends and year-to-year variability in carbon sequestration of Northeastern forests", was selected for funding. Co-PIs are Bill Munger, Gil Bohrer, Danilo Dragoni and Dave Hollinger.
- Andrew was co-PI on Dave Hollinger's proposal, "Supporting carbon cycle and earth systems modeling with measurements and analysis from the Howland AmeriFlux site", which has been selected for funding through DOE's Terrestrial Carbon Cycle Research program.
- Trevor, Oliver, Youngryel and Andrew all attended the FLUXNET-SpecNET joint meeting in Berkeley CA and presented their work to the community.
- Andrew and Trevor had a field trip to the White Mountains to collect cookies for the Milton Fund project. The lab's brand-new Stihl chainsaw came in handy!
- Trevor's paper: The Model-Data fusion pitfall: Assuming certainty in an uncertain world. (Keenan, T.F., M.S. Carbone, M. Reichstein, A.D. Richardson) was accepted for publication in Oecologia.
- We bid farewell and best wishes to Youngryel and Cory as they move on to the next stages in their lives and careers. Youngryel returns to South Korea while Cory is going home to Seattle.
- Trevor, Andrew and Mariah began collecting samples for the Milton Fund project on nonstructural carbohydrates in red maple trees. Mariah is shown collecting stump sprouts from a recently-harvested stand in the White Mountains National Forest over Memorial Day weekend. The bugs were out!
- Andrew's recent proposal to NSF's Macrosystems Biology program, "Continental-Scale Monitoring, Modeling and Forecasting of Phenological Responses to Climate Change", was approved for funding. Co-PIs are Mark Friedl (Boston University), Steve Frolking (University of New Hampshire), and Robert Pless (Washington University, St Louis). The project (abstract here; http://nsf.gov/awardsearch/showAward.do?AwardNumber=1065029) will run for five years.
- Five new Richardson Lab interns in the Harvard Forest Summer Program in Ecology (supported by grants from NSF and NASA) began work in Petersham at the end of May: Libby Felts (Harvard College), Lakeitha Mitchell (Lincoln University), Bridget Darby (Boston University), Rachel Norman (UNC Chapel Hill), and Isaac Levine (Lafayette College) will be working closely with Trevor, Oliver and Koen this summer on projects related to phenology and climate change in New England.
- Dave Moore (NEON/King's College London) visited the lab in mid-May to work on projects with Andrew and Oliver, and to participate in the Summer 2011 REU internship program at Harvard Forest. Dave gave a lecture on model-data fusion to the summer interns, and will be working with Oliver, Koen, and the interns on phenological modeling. As shown in the photograph, a highlight of Dave's visit to Cambridge was the opportunity to rub John Harvard's left toe (for good luck).
- Andrew and Mariah visited collaborators Jasper Vrugt (model-data fusion) and Claudia Czimczik (radiocarbon analyses of nonstructural carbohydrates) at UC-Irvine
- Megan Bartlett's paper on the work she conducted in the Harvard Forest REU Program (Summer 2009) was accepted for publication in the journal Botany. Megan is now a PhD student in the Department of Ecology and Evolutionary Biology at UCLA. Bartlett, M.K., S.V. Ollinger, D.Y. Hollinger, H.F. Wicklein, and A.D. Richardson. 2011. Canopy-scale relationships between foliar nitrogen and albedo are not observed in leaf reflectance and transmittance within temperate deciduous tree species. Botany, in press.
- Andrew's paper on the uncertainties associated with leaf area index measurements was accepted for publication in Agricultural and Forest Meteorology: Richardson, A.D., D.B. Dail, and D.Y. Hollinger. 2011. Leaf area index uncertainty estimates for model-data fusion applications. Agricultural and Forest Meteorology, in press.
- Oliver visited Mats Nilsson and Matthias Peichl of the Biogeochemistry group at the Swedish University of Agriculture, Department of Forest Ecology and Management, and gave a research seminar on: "Phenological research using digital cameras: seasonal changes in canopy color and gap fraction"
- Andrew and Trevor also took Motomu to visit the Bartlett Experimental Forest for a weekend. For Trevor, a highlight of this trip was the opportunity to try cross-country skiing for the first time.
- Mariah co-authored a paper about the transport of C in Hawaiian soils that was accepted in JGR Biogeosciences
- Mariah attended the 20th Anniversary Celebration of the NOAA Climate and Global Change Postdoctoral Fellowship Program in Silver Spring, MD.
- Andrew gave visitors Motomu Toda (from Japan) and Steve Klosterman (who will be joining the lab as a Ph.D. student in September) a tour of the Harvard Forest (picture below).
- Andrew accepted an invitation by students in Penn State's Graduate Degree Program in Ecology to speak about webcams, phenology, and climate change in their "Phenology: applications and ecological consequences" seminar series.
- Andrew delivered a public lecture on phenology and climate change to the Concord (MA) Land Conservation Trust.
- Mariah joined the National Center for Ecological Analysis and Synthesis (NCEAS) to work on a synthesis of soil respiration in semiarid and arid ecosystems.
- Oliver and his wife, Julie Talbot, were both offered faculty positions at the Université de Montréal. Congratulations, Oliver and Julie!
- Trevor attended the INTERFACE meeting in Captiva Island, Florida MEETING WEBLINK
- Mariah's paper about partitioning sources of soil respiration on Santa Cruz Island was accepted in Oecologia.
- Oliver had a new paper accepted: Tracking the structural and functional development of a perennial pepperweed (Lepidium latifolium L.) infestation using a multi-year archive of webcam imagery and eddy covariance measurements. in press, Agricultural and Forest Meteorology.
- Youngryel was offered (and accepted!) a faculty position from Seoul National University!
- Oliver and Trevor spent a week in New Orleans attending the NACP/AMERIFLUX annual conference.
- Trevor presented his work at the NACP meeting (long-term trends in C-cycling at Harvard forest and uncertainties in ecological forecasting.) You can get the powerpoint here - PDF And a video here: [video (209MB)]
- Andrew, Mariah and Trevor attended the FLUXNET "Schinkenfest" workshop at the Max Planck Institute's Schloss Ringberg (near Tegernsee, Germany), hosted by Markus Reichstein.
Left to right: Nuno Carvalhais, Bert Gielen (kneeling), Myroslava Khomik, Markus Reichstein, Jian Wu, Trevor, Mariah, Andrew
- The Richardson Lab attends the fall meeting of the American Geophysical Union in San Francisco. For Andrew, a highlight was having his photo taken with Union President Mike McPhaden.
- Oliver had a new paper accepted: Carbon dioxide exchange of a pepperweed (Lepidium latifolium L.) infestation: how do flowering and mowing affect canopy photosynthesis and autotrophic respiration? JGR-Biogesciences (in press)
- Oliver attended the regional phenology meeting in Durham
- Scott Ollinger and Jingfeng Xiao visited the lab
- The Richardson Lab annual retreat, to the Bartlett Experimental Forest, was a great success. After a full day science meeting on Friday, we spent Saturday morning hiking to the top of Mount Willard, in Crawford Notch.
Left to right: Youngryel, Trevor, Mariah, Oliver, Andrew, Koen Hufkens
- Trevor had a new paper accepted: Keenan, T.F., Grote, R., and Sabate, S.,: Overlooking the canopy: The importance of canopy structure in scaling isoprenoid emissions from the leaf to the landscape. Ecological Modelling (in press).
- Andrew attended the Carbo-Extreme meeting in Denmark
- Mariah went to D.C. to plan the upcomming AGU fall meeting
- Youngryel crossed the country and finally joined the lab.
- The camera intercomparison experiment continues at Harvard Forest: we installed 12 new cameras (different webcams, plant and game cams, point & shoot cameras and a DSLR) to examine the influence of sensor type (CCD vs. CMOS), resolution, etc. on color information for phenological research.
- Andrew attended the NACP Interim Synthesis workshop in Boulder, CO.
- After three months in "visitor" status, Oliver Sonnentag officially joined the lab at the beginning of August
- A proposal to NASA's GCCE program, submitted by Aaron Ellison (Andrew was co-I) was approved for funding. The grant will support expansion of the Harvard Forest Summer Research Program in Ecology.
- Andrew was coauthor on Miguel Mahecha's respiration modeling paper in Science: Mahecha, M.D., M. Reichstein, N. Carvalhais, G. Lasslop, H. Lange, S.I. Seneviratne, R. Vargas, C. Ammann, M.A. Arain, A. Cescatti, I.A. Janssens, M. Migliavacca, L. Montagnani, A.D. Richardson. 2010. Global convergence in the temperature sensitivity of respiration at ecosystem level. Science 329: 838-840, DOI: 10.1126/science.1189587.
- Andrew's "multiple constraints" data-model fusion paper was published in Oecologia: Richardson, A.D., M. Williams, D.Y. Hollinger, D.J.P. Moore, D.B. Dail, E.A. Davidson, N.A. Scott, R.S. Evans, H. Hughes, J.T. Lee, C. Rodrigues, and K. Savage. 2010. Estimating parameters of a forest ecosystem C model with measurements of stocks and fluxes as joint constraints. Oecologia 164: 25-40, DOI: 10.1007/s00442-010-1628-y.
- Andrew attended the Ecological Society of America annual meeting in Pittsburgh, and presented an invited talk on predicting shifts in vegetation phenology to 2100 in the Ecological Forecasting session organized by Michael Keller and Yiqi Luo.
- Youngryel had a new paper accepted: Ryu, Y., Baldocchi, D.D., Verfaillie, J., Ma, S., Falk, M., Ruiz-Mercado, I., Hehn, T. and Sonnentag, O., 2010. Testing the performance of a novel spectral reflectance sensor, built with light emitting diodes (LEDs), to monitor ecosystem metabolism, structure and function. Agric. For. Meteorol., doi:10.1016/j.agrformet.2010.08.009.
- Trevor's paper was featured #6 in the top 25 fastest breaking articles in the second quarter in Agricultural and Forest Meteorology 2010
- Andrew attended the NSF-sponsored FORECAST RCN workshop, organized by Yiqi Luo and hosted by NEON, in Boulder.
- Andrew again participated in the Summer Flux Measurement and Modeling Course, held at Niwot Ridge an organized by Russ Monson and Dave Moore.
- Andrew visited the Rocky Mountain Biological Laboratory in Gothic, Colorado.
- Mariah attended NOAA Climate and Global Change Summer Institute, Steamboat Springs, CO
- Mariah undertook a field campaign at the Rocky Mountain Biological Laboratory, Gothic, CO
- Trevor's paper was published on-line in Global Change Biology: Keenan, T., P. Serra, F. Lloret, M. Ninyerola and S. Sabate (2010) Predicting the future of forests in the Mediterranean under climate change, with niche- and process-based models: CO2 matters!. Global Change Biology, doi: 10.1111/j.1365-2486.2010.02254.x.
- Andrew attended the Phenology 2010 conference and CEOS Workshop on the Validation of Satellite-based Land Surface Phenology Products, both held in Dublin, Ireland, and delivered oral presentations on webcam phenology.
- Oliver's paper came out in Global Change Biology: Sonnentag, O., van der Kamp, G., Barr, A., Chen, J.M., 2010, On the relationship between water table depth and water vapor and carbon dioxide fluxes in a minerotrophic fen. Global Change Biology, 16, 1762-1776.
- Andrew, Koen and Oliver are serving as mentors to three summer REU students at the Harvard Forest (Andrea Garcia, Humboldt State; Adam Young, SUNY ESF; Cory Teshera-Sterne, Mt. Holyoke).
- Andrew attended the European Geosciences Union General Assembly in Vienna, where he presented a talk on evaluation of MODIS phenology using webcam data. After Vienna he visited Markus Reichstein and colleagues at the Max-Planck Institute in Jena, Germany.
- Mariah presented and organized a session at EGU, Vienna, Austria
- Mariah visited Max Planck Institute, Jena, Germany
- Youngryel Ryu became Dr Ryu!
- Oliver delivered the HUH seminar.
- Adrian Rocha, a postdoc at MBL, visited the lab and delivered the HUH seminar.
- Trevor attended the EFIMED conference in Turkey where he was presented an award for the best PhD in Mediterranean forestry 2009.
- Trevor's paper was accepted in Global Change Biology: Keenan, T., P. Serra, F. Lloret, M. Ninyerola and S. Sabate (2010) Predicting the future of forests in the Mediterranean under climate change, with niche- and process-based models: CO2 matters!. Global Change Biology, doi: 10.1111/j.1365-2486.2010.02254.x.
- Trevor's paper was featured #6 in the top 25 hottest papers in the first quarter in Agricultural and Forest Meteorology 2010
- Youngryels paper was featured #7 in the top 25 hottest papers in the first quarter in Agricultural and Forest Meteorology 2010
- Oliver Sonnentag joined the lab from UC Berkeley, where he was a postdoc with Maggi Kelly and Dennis Baldocchi.
paper on phenology was
accepted for publication
in Philosophical Transactions
of the Royal Society,
Richardson, A.D., T.A. Black, P. Ciais, N. Delbart, M.A. Friedl, N. Gobron, D.Y. Hollinger, W.L. Kutsch, B. Longdoz, S. Luyssaert, M. Migliavacca, L. Montagnani, J.W. Munger, E. Moors, S. Piao, C. Rebmann, M. Reichstein, N. Saigusa, E. Tomelleri, R. Vargas, and A. Varlagin. Influence of spring and autumn phenological transitions on forest ecosystem productivity.
- Koen Hufkens, a postdoc at Boston University with Mark Friedl, is visiting the lab.
- Andrew served as external examiner on Hella Ahrends’s (ETH Zurich) successful PhD thesis defense. Congratulations, Hella!
- We had a lab group road trip to the Woods Hole Research Center to meet with Eric Davidson and Kathleen Savage and discuss current and future projects.
- Trevor delivered the MCZ lunchtime seminar.
- Two new webcams will soon be installed at the Harvard Forest, one on the Little Prospect Hill tower, and one on the Hemlock tower.
- We had a lab group road trip to the Harvard Forest Ecology Symposium.
- Andrew’s data-model fusion
paper was accepted
for publication in Oecologia:
Richardson, A.D., M. Williams, D.Y. Hollinger, D.J.P. Moore, D.B. Dail, E.A. Davidson, N.A. Scott, R.S. Evans, H. Hughes, J.T. Lee, C. Rodrigues, and K. Savage. 2010. Estimating parameters of a forest ecosystem C model with measurements of stocks and fluxes as joint constraints
- Trevor had papers from his PhD research published in Global Change Biology and Agricultural and Forest Meteorology.
- We travelled to the Howland Forest to install Andrew’s new Picarro fast-response CO2/CH4/H2O analyzer, and replace the Main and North tower webcams.
- Trevor Keenan joined the lab from the Autonomous University of Barcelona, where he completed his PhD.
- Andrew’s (Co-investigator) Harvard Forest REU Program proposal (PI Aaron Ellison) was funded by the National Science Foundation.
- Andrew’s (Co-investigator) proposal submitted to the United States Geological Survey/National Parks Monitoring Project, “Integrated phenological monitoring, analysis, and synthesis to track ecosystem responses to climate change,” (PIs Jake Weltzin and Brian Mitchell) was funded.
- Happy New Year!