“Trends in stream nitrogen concentrations for forested reference catchments across the USA” by Alba Argerich, Sherri Johnson, Steve Sebestyen, Chuck Rhoades, Effie Greathouse, Jennifer Knoepp, Mary Beth Adams, Gene Likens, John Campbell, Bill McDowell, Fred Scatena, and George Ice has been published in the last issue of Environmental Research Letters. Click here to view the abstract and download the pdf.
The manuscript is accompanied by a video abstract -which PNW helped us create- that has been posted in the journal web page (http://bcove.me/gh3d2bkj) and in the USFS you tube channel (http://www.youtube.com/watch?v=gPxiB_ggP54).
Some of us met for a two hour workshop at the LTER All Science Meeting last September. The first part of the workshop was used to present the latest advances in the project (i.e., the paper submitted to BioSicence entitled “Trends in Stream Nitrogen Concentrations for Forested Reference Catchments across the USA”, progress on the second of the papers planned -“Characterizing Variability of Stream Chemistry at Forested Catchments-Applicability to Development of Numeric Nutrient Criteria”-, and new features in the StreamChem database). During the second part of the workshop we discussed the next steps of the project and the objectives for the next planned papers: "Biogeochemical Responses to Disturbances in Long-Term Watersheds” and “Best Approaches for Calculating Stream Solute Fluxes across a Suite of Hydrological Regimes”. You can find the final report of the working group below.
The Stream Chemistry Synthesis project will be at the 97th Ecological Society of America annual meeting (5-10 August, Portland, Oregon). We will be presenting a poster entitled “Effects of forests disturbances on stream nitrate concentrations and fluxes”.
On May 2 and 3, Alba Argerich and Effie Greathouse (both from Oregon State University) presented two talks about the Stream Chemistry Synthesis Project at the National Water Quality Monitoring Conference (NWQMC) held in Portland, OR. The NWQMC is a biennial national conference that gathers governmental organizations, tribes, volunteers, academia, watershed and environmental groups, and the private sector to discuss new findings on the quality of the Nation's waters.
On October 13-14 2011, the Stream Chemistry Databases Workshop was held in Corvallis, Oregon with a total of 25 attendees. After an overview of several existing databases in the web, we shared ideas on the desired design of a stream chemistry database, the metadata accompaining stream chemistry data and the stadardized vocabulary
The Stream Chemistry Synthesis project will be at the next American Geophysical Union Fall meeting (San Francisco, 5-9 December). We will be presenting two posters entitled "Temporal Trends in Stream N Concentrations and Responses to Disturbances in US Forested Basins" and "Variability in stream nitrogen at US Forest Service Experimental Forests and relevance to proposed stream nutrient criteria".
A webinar to share ideas and discuss cross site stream chemistry data bases (StreamChemDB) will be held this Wednesday, Aug. 31, from 12pm - 1:30pm PDT. The objectives for this webinar are to share progress to date towards a standardized chemistry database with metadata for a subset of LTER and EFR sites. We'd like to hear your thoughts and discuss next steps broadly. Detailed discussion of crucial metadata and formats, incentives for participating and ideas for possible sources of funding will occur during a small group workshop Oct 13-14 at HJ Andrews Exp Forest.
Last July, Dr. Stephen Sebestyen was first author for a poster presented at the International Union of Geodesy and Geophysics General Assembly in Melbourne, Australia. IUGG is the international organization dedicated to advancing, promoting, and communicating knowledge of the Earth system, its space environment, and the dynamical processes causing change. Dr. Sebestyen presented an overview of the Stream Chemistry Synthesis Project in the session, "Revisiting experimental catchment studies in forest hydrology".
On June 30, Dr. Alba Argerich (Oregon State University) presented a StreamChem communication at the Symposium for European Freshwater Sciences (SEFS). SEFS is Europe's largest forum for freshwater science, which brings together scientists from numerous aquatic disciplines. The Symposium is coordinated by the European Federation for Freshwater Sciences (EFFS) and is held every two years in a different European city. This time the conference took place in Girona (Catalonia, Spain) and brought together researchers from Europe and US for five days to discuss the topic "Freshwater ecosystems- Challenges between conservation and management under global change". The communication presented the results of the analysis of temporal trends in stream nitrogen concentrations in forested reference basins of several Experimental Forest Sites.