Nitrogen Newsletter Issue 19, March-April 2011 Nitrogen Newsletter is a summary of recent publications, news and reports related to the cycling, effects and management of nitrogen. Prepared by Mary O’Brien and Jana Compton. Contact Jana Compton with any questions (Compton.jana@epa.gov) Please note: Most of these links are available to EPA staff through library access – not all links will be available to folks outside EPA, depending on your access to specific journals and websites.

Table of Contents Special Issues .................................................................................................................................. 1 News ............................................................................................................................................... 1 Articles ............................................................................................................................................ 3 Reports .......................................................................................................................................... 27 Web Pages ..................................................................................................................................... 28 Upcoming Events .......................................................................................................................... 28

Special Issues Critical Reviews in Environmental Science and Technology, 41(Supplement 1), 2011. ISSN 1064-3389. http://www.informaworld.com/smpp/title~db=all~content=g933744532

News For BNA subscribers (including EPA staff): Chesapeake Bay: USDA finds cropland conservation common, few farmers with comprehensive practices BNA Daily Environment Report, March 16, 2011 http://news.bna.com/deln/DELNWB/split_display.adp?fedfid=20067014&vname=dennotallissues&wsn=496349000&searchid=14605510&doctypeid=1&type=date&mode=doc&split=0&scm=DELNWB&pg=1 Water pollution: EPA nutrient reduction framework urges states to develop plan, schedule for criteria BNA Daily Environment Report, March 17, 2011 http://news.bna.com/deln/DELNWB/split_display.adp?fedfid=20072806&vname=dennotallissues&fn=20072806&jd=a0c6v4m3k3&split=0

Water pollution: Reducing nutrients should be addressed as complex issue, water officials caution BNA Daily Environment Report, March 25, 2011 http://news.bna.com/deln/DELNWB/split_display.adp?fedfid=20163790&vname=dennotallissues&wsn=496124500&searchid=14605510&doctypeid=1&type=date&mode=doc&split=0&scm=DELNWB&pg=1 Chesapeake Bay: EPA issues TMDL implementation guide to help states craft plans for 2012-2017 BNA Daily Environment Report, April 4, 2011 http://news.bna.com/deln/DELNWB/split_display.adp?fedfid=20219836&vname=dennotallissues&wsn=495915000&searchid=14605510&doctypeid=1&type=date&mode=doc&split=0&scm=DELNWB&pg=1 Water pollution: EPA releases Clean Water protection strategy BNA Daily Environment Report, April 4, 2011 http://news.bna.com/deln/DELNWB/split_display.adp?fedfid=20219848&vname=dennotallissues&wsn=495924000&searchid=14605510&doctypeid=1&type=date&mode=doc&split=0&scm=DELNWB&pg=1 For Greenwire subscribers (including EPA staff): Chesapeake Bay: Tree planting is first step in partnership’s cleanup efforts Greenwire, April 15, 2011 http://www.eenews.net/Greenwire/2011/04/15/archive/18 Chesapeake Bay: Chicken poop finds a new purpose at Del. recycling center Greenwire, April 25, 2011 http://www.eenews.net/Greenwire/2011/04/25/archive/22 For Inside EPA subscribers (including EPA staff): EPA urges states to craft strict numeric approaches to address nutrients Inside EPA, March 18, 2011 http://insideepa.com/Inside-EPA/Inside-EPA-03/18/2011/epa-urges-states-to-craft-strict-numeric-approaches-to-address-nutrients/menu-id-153.html Agriculture industry seeks USDA lead in nutrient reduction from farms Water Policy Report, March 28, 2011 http://insideepa.com/Water-Policy-Report/Water-Policy-Report-03/28/2011/agriculture-industry-seeks-usda-lead-in-nutrient-reduction-from-farms/menu-id-155.html

Articles Abell, Jonathan M., Deniz Oezkundakci, David P. Hamilton, and Steven D. Miller. Relationships between land use and nitrogen and phosphorus in New Zealand lakes Marine and Freshwater Research, 62(2): 162-175, 2011. ISSN 1323-1650. http://dx.doi.org/10.1071/MF10180 Acton, S. D., and E. M. Baggs. Interactions between N application rate, CH4 oxidation and N2O production in soil Biogeochemistry, 103(1-3): 15-26, April 2011. ISSN 0168-2563. http://dx.doi.org/10.1007/s10533-010-9442-5 Allen, Andrew E., Christopher L. Dupont, Miroslav Oborník, Aleš Horák, Adriano Nunes-Nesi,, John P. McCrow, Hong Zheng, Hanhua Hu, Alisdair R. Fernie, and Chris Bowler. Exosymbiont-derived urea cycle used for intracellular carbon and nitrogen recovery in diatoms Nature, 473(7346), May 12 2011. ISSN 0028-0836. http://dx.doi.org/10.1038/nature10074 Attard, E., S. Recous, A. Chabbi, C. De Berranger, N. Guillaumaud, J. Labreuche, L. Philippot, B. Schmid, and X. Le Roux. Soil environmental conditions rather than denitrifier abundance and diversity drive potential denitrification after changes in land uses Global Change Biology, 17(5): 1975-1989, May 2011. ISSN 1354-1013. http://dx.doi.org/10.1111/j.1365-2486.2010.02340.x Aubin, Joel, Aurelien Tocqueville, and Sadasivam J. Kaushik. Characterisation of waste output from flow-through trout farms in France: comparison of nutrient mass-balance modelling and hydrological methods Aquatic Living Resources, 24(1): 63-70, January 2011. ISSN 0990-7440. http://dx.doi.org/10.1051/alr/2011008 Belyazid, Salim, Harald Sverdrup, Daniel Kurz, and Sabine Braun. Exploring ground vegetation change for different deposition scenarios and methods for estimating critical loads for biodiversity using the ForSAFE-VEG model in Switzerland and Sweden Water Air and Soil Pollution, 216(1-4): 289-317, March 2011. ISSN 0049-6979. http://10.1007/s11270-010-0534-6 Belyazid, Salim, Dani Kurz, Sabine Braun, Harald Sverdrup, Beat Rihm, and Jean-Paul Hettelingh. A dynamic modelling approach for estimating critical loads of nitrogen based on pliant community changes under a changing climate Environmental Pollution, 159(3): 789-801, March 2011. ISSN 0269-7491. http://dx.doi.org/10.1016/j.envpol.2010.11.005

Bergstermann, Anja, Laura Cardenas, Roland Bol, Lucy Gilliam, Keith Goulding, Ana Meijide, David Scholefield, Antonio Vallejo, and Reinhard Well. Effect of antecedent soil moisture conditions on emissions and isotopologue distribution of N2O during denitrification Soil Biology & Biochemistry, 43(2): 240-250, February 2011. ISSN 0038-0717. http://dx.doi.org/10.1016/j.soilbio.2010.10.003 Bingham, Marcus A., and Mario Biondini. Nitrate leaching as a function of plant community richness and composition, and the scaling of soil nutrients, in a restored temperate grassland Plant Ecology, 212(3): 413-422, March 2011. ISSN 1385-0237. http://dx.doi.org/10.1007/s11258-010-9832-8 Black, Robert W., Patrick W. Moran, and Jill D. Frankforter. Response of algal metrics to nutrients and physical factors and identification of nutrient thresholds in agricultural streams Environmental Monitoring and Assessment, 175(1-4): 397-417, April 2011. ISSN 0167-6369. http://dx.doi.org/10.1007/s10661-010-1539-8 Bontemps, Jean-Daniel, Jean-Christophe Herve, Jean-Michel Leban, and Jean-Francois Dhote. Nitrogen footprint in a long-term observation of forest growth over the twentieth century Trees-Structure and Function, 25(2): 237-251, April 2011. ISSN 0931-1890. http://dx.doi.org/10.1007/s00468-010-0501-2 Boettcher, J., D. Weymann, R. Well, C. von der Heide, A. Schwen, H. Flessa, W. H. M. Duijnisveld. Emission of groundwater-derived nitrous oxide into the atmosphere: model simulations based on a 15N field experiment European Journal of Soil Science, 62(2): 216-225, April 2011. ISSN 1351-0754. http://dx.doi.org/10.1111/j.1365-2389.2010.01311.x Brown, Jenny, Leslie Bach, Allison Aldous, Abby Wyers, and Julia DeGagne. Groundwater-dependent ecosystems in Oregon: an assessment of their distribution and associated threats Frontiers in Ecology and the Environment, 9(2): 97-102, March 2011. ISSN 1540-9295. http://dx.doi.org/10.1890/090108 Butler, Thomas J., Francoise M. Vermeylen, Melissa Rury, Gene E. Likens, Brian Lee, George E. Bowker, and Lance McCluney. Response of ozone and nitrate to stationary source NOx emission reductions in the eastern USA Atmospheric Environment, 45(5): 1084-1094, February 2011. ISSN 1352-2310. http://dx.doi.org/10.1016/j.atmosenv.2010.11.040 Cantarel, Amelie A. M., Juliette M. G. Bloor, Nicolas Deltroy, and Jean-Francois Soussana. Effects of climate change drivers on nitrous oxide fluxes in an upland temperate grassland

Ecosystems, 14(2): 223-233, March 2011. ISSN 1432-9840. http://dx.doi.org/10.1007/s10021-010-9405-7 Cardenas, L. M., S. P. Cuttle, B. Crabtree, A. Hopkins, A. Shepherd, D. Scholefield, and A. del Prado. Cost effectiveness of nitrate leaching mitigation measures for grassland livestock systems at locations in England and Wales Science of the Total Environment, 409(6): 1104-1115, February 15, 2011. ISSN 0048-9697. http://dx.doi.org/10.1016/j.scitotenv.2010.12.006 Carlos Rodriguez-Murillo, Juan, Miguel Alvarez-Cobelas, and Elisa Pina-Ochoa. Recent changes in nutrient content and accumulation in the sediments of Colgada Lake (Spain): Mineralization vs pollution effects Fundamental and Applied Limnology, 178(3): 177-189, February 2011. ISSN 1863-9135. http://dx.doi.org/10.1127/1863-9135/2011/0178-0177 Carriquiry, Jose D., Julio A. Villaescusa, Victor Camacho-Ibar, L. Walter Daessle, and Pedro G. Castro-Castro. The effects of damming on the materials flux in the Colorado River delta Environmental Earth Sciences, 62(7): 1407-1418, April 2011. ISSN 1866-6280. http://dx.doi.org/10.1007/s12665-010-0626-z Chahinian, Nanee, Marie-George Tournoud, Jean-Louis Perrin, and Bernadette Picot. Flow and nutrient transport in intermittent rivers: a modelling case-study on the Vene River using SWAT 2005 Hydrological Sciences Journal-Journal Des Sciences Hydrologiques, 56(2): 268-287, 2011. ISSN 0262-6667. http://dx.doi.org/10.1080/02626667.2011.559328 Chen, G. C., N. F. Y. Tam, Y. S. Wong, and Y. Ye. Effect of wastewater discharge on greenhouse gas fluxes from mangrove soils Atmospheric Environment, 45(5): 1110-1115, February 2011. ISSN 1352-2310. http://dx.doi.org/10.1016/j.atmosenv.2010.11.034 Chen, Hung-Yu, and Liang-De Chen. Occurrence of water soluble organic nitrogen in aerosols at a coastal area Journal of Atmospheric Chemistry, 65(1): 49-71, January 2010. ISSN 0167-7764. http://dx.doi.org/10.1007/s10874-010-9181-y Chen, Nengwang, Huasheng Hong, Quanjia Huang, and Jiezhong Wu. Atmospheric nitrogen deposition and its long-term dynamics in a southeast China coastal area Journal of Environmental Management, 92(6): 1663-1667, June 2011. ISSN 0301-4797. http://dx.doi.org/10.1016/j.jenvman.2011.01.026 Chen, Yao-Te, Werner Borken, Claus Florian Stange, and Egbert Matzner.

Effects of decreasing water potential on gross ammonification and nitrification in an acid coniferous forest soil Soil Biology & Biochemistry, 43(2): 333-338, February 2011. ISSN 0038-0717. http://dx.doi.org/10.1016/j.soilbio.2010.10.020 Ciavatta, Stefano, and Roberto Pastres. Exploring the long-term and interannual variability of biogeochemical variables in coastal areas by means of a data assimilation approach Estuarine Coastal and Shelf Science, 91(3): 411-422, February 10, 2011. ISSN 0272-7714. http://dx.doi.org/10.1016/j.ecss.2010.11.006 Claret M., Marcelino, Roberto Urrutia P., Rodrigo Ortega B., Stanley Best S., and Natalia Valderrama V. Quantifying nitrate leaching in irrigated wheat with different nitrogen fertilization strategies in an alfisol Chilean Journal of Agricultural Research, 71(1): 148-156, January-March 2011. ISSN 0718-5820. http://www.chileanjar.cl/current.php Currey, Pauline M., David Johnson, Lorna A. Dawson, Rene van der Wal, Barry Thornton, Lucy J. Sheppard, Ian D. Leith, and Rebekka R. E. Artz. Five years of simulated atmospheric nitrogen deposition have only subtle effects on the fate of newly synthesized carbon in Calluna vulgaris and Eriophorum vaginatum Soil Biology & Biochemistry, 43(3): 495-502, March 2011. ISSN 0038-0717. http://dx.doi.org/10.1016/j.soilbio.2010.11.003 Danielescu, Serban, and Kerry T. B. MacQuarrie. Nitrogen loadings to two small estuaries, Prince Edward Island, Canada: a 2-year investigation of precipitation, surface water and groundwater contributions Hydrological Processes, 25(6): 945-957, March 15, 2011. ISSN 0885-6087. http://dx.doi.org/10.1002/hyp.7881 Dawson, Julian J. C., and Pete Smith. Integrative management to mitigate diffuse pollution in multi-functional landscapes Current Opinion in Environmental Sustainability, 2(5-6): 375-382, December 2010. ISSN 1877-3435. http://dx.doi.org/10.1016/j.cosust.2010.09.005 Davis, Jennifer H., Stephen M. Griffith, and Parker J. Wigington, Jr. Surface water and groundwater nitrogen dynamics in a well drained riparian forest within a poorly drained agricultural landscape Journal of Environmental Quality, 40(2): 505-516, March 2011. ISSN 0047-2425. http://dx.doi.org/10.2134/jeq2010.0310 Dayyani, Shadi, Shiv O. Prasher, Ali Madani, and Chandra A. Madramootoo.

Development of DRAIN-WARMF model to simulate flow and nitrogen transport in a tile-drained agricultural watershed in Eastern Canada Agricultural Water Management, 98(1): 55-68, December 1, 2010. ISSN 0378-3774. http://dx.doi.org/10.1016/j.agwat.2010.07.012 de Vries, Franciska T., Jan Willem van Groenigen, Ellis Hoffland, and Jaap Bloem. Nitrogen losses from two grassland soils with different fungal biomass Soil Biology & Biochemistry, 43(5): 997-1005, May 2011. ISSN 0038-0717. http://dx.doi.org/10.1016/j.soilbio.2011.01.016 Dias, Teresa, Sonia Malveiro, Maria Amelia Martins-Loucao, Lucy J. Sheppard, and Cristina Cruz. Linking N-driven biodiversity changes with soil N availability in a Mediterranean ecosystem Plant and Soil, 341(1-2): 125-136, April 2011. ISSN 0032-079X. http://dx.doi.org/10.1007/s11104-010-0628-3 Durisch-Kaiser, E., A. Doberer, J. Reutimann, A. Pavel, S. Balan, S. Radan, and B. Wehrli. Organic matter governs N and P balance in Danube Delta lakes Aquatic Sciences, 73(1): 21-33, February 2011. ISSN 1015-1621. http://dx.doi.org/10.1007/s00027-010-0156-5 Eickenscheidt, N., R. Brumme, and E. Veldkamp. Direct contribution of nitrogen deposition to nitrous oxide emissions in a temperate beech and spruce forest - a N-15 tracer study Biogeosciences, 8(3): 621-635, 2011. ISSN 1726-4170. http://dx.doi.org/10.5194/bg-8-621-2011 Elsey-Quirk, Tracy, Denise M. Seliskar, and John L. Gallagher. Nitrogen pools of macrophyte species in a coastal lagoon salt marsh: Implications for seasonal storage and dispersal Estuaries and Coasts, 34(3): 470-482, May 2011. ISSN 1559-2723. http://dx.doi.org/10.1007/s12237-011-9379-5 Engle, Virginia D. Estimating the provision of ecosystem services by Gulf of Mexico coastal wetlands Wetlands, 31(1): 179-193, February 2011. ISSN 0277-5212. http://dx.doi.org/10.1007/s13157-010-0132-9 Evans, Daniel M., Stephen H. Schoenholtz, Parker J. Wigington, Jr., and Stephen M. Griffith, Nitrogen mineralization in riparian soils along a river continuum within a multi-land-use basin Soil Science Society of America Journal, 75(2): 719-728, March-April 2011. ISSN 0361-5995. http://dx.doi.org/10.2136/sssaj2010.0162 Evans, Mary Anne, and Donald Scavia.

Forecasting hypoxia in the Chesapeake Bay and Gulf of Mexico: model accuracy, precision, and sensitivity to ecosystem change Environmental Research Letters, 6(1): 015001, January-March 2011. ISSN 1748-9326. http://dx.doi.org/10.1088/1748-9326/6/1/015001 Fellows, Christine S., Heather M. Hunter, Claire E. A. Eccleston, Robert W. De Hayr, David W. Rassam, Nerida J. Beard, and Philip M. Bloesch. Denitrification potential of intermittently saturated floodplain soils from a subtropical perennial stream and an ephemeral tributary Soil Biology & Biochemistry, 43(2): 324-332, February 2011. ISSN 0038-0717. http://dx.doi.org/10.1016/j.soilbio.2010.10.019 Flechard, C. R., E. Nemitz, R. I. Smith, D. Fowler, A. T. Vermeulen, A. Bleeker, J. W. Erisman, D. Simpson, L. Zhang, Y. S. Tang, and M. A. Sutton. Dry deposition of reactive nitrogen to European ecosystems: a comparison of inferential models across the NitroEurope network Atmospheric Chemistry and Physics, 11(6): 2703-2728, 2011. ISSN 1680-7316. http://dx.doi.org/10.5194/acp-11-2703-2011 Flury, Sabine, and Mark O. Gessner. Experimentally simulated global warming and nitrogen enrichment effects on microbial litter decomposers in a marsh Applied and Environmental Microbiology, 77(3): 803-809, February 2011. ISSN 0099-2240. http://dx.doi.org/10.1128/AEM.01527-10 Friedrich, Uta, Kirsten Falk, Enno Bahlmann, Thorben Marquardt, Hartmut Meyer, Thomas Niemeyer, Siegfried Schemmel, Goddert von Oheimb, and Wener Haerdtle. Fate of airborne nitrogen in heathland ecosystems: a 15N tracer study Global Change Biology, 17(4): 1549-1559, April 2011. ISSN 1354-1013. http://dx.doi.org/10.1111/j.1365-2486.2010.02322.x Ge, Xinlei, Anthony S. Wexler, and Simon L. Clegg. Atmospheric amines - Part I. A review Atmospheric Environment, 45(3): 524-546, January 2011. ISSN 1352-2310. http://dx.doi.org/10.1016/j.atmosenv.2010.10.012 Ge, Xinlei, Anthony S. Wexler, and Simon L. Clegg. Atmospheric amines - Part II. Thermodynamic properties and gas/particle partitioning Atmospheric Environment, 45(3): 561-577, January 2011. ISSN 1352-2310. http://dx.doi.org/10.1016/j.atmosenv.2010.10.013 Gebhart, Kristi A., Bret A. Schichtel, William C. Malm, Michael G. Barna, Marco A. Rodriguez, and Jeffrey L. Collett, Jr. Back-trajectory-based source apportionment of airborne sulfur and nitrogen concentrations at Rocky Mountain National Park, Colorado, USA

Atmospheric Environment, 45(3): 621-633, January 2011. ISSN 1352-2310. http://dx.doi.org/10.1016/j.atmosenv.2010.10.035 Gennaro, Paola, and Luigi Piazzi. Synergism between two anthropic impacts: Caulerpa racemosa var. cylindracea invasion and seawater nutrient enrichment Marine Ecology-Progress Series, 427: 59-70, 2011. ISSN 0171-8630. http://dx.doi.org/10.3354/meps09053 Glibert, Patricia M. Long-term changes in nutrient loading and stoichiometry and their relationships with changes in the food web and dominant pelagic fish species in the San Francisco Estuary, California Reviews in Fisheries Science, 18(2): 211-232, 2010. ISSN 1064-1262. http://dx.doi.org/10.1080/10641262.2010.492059 Golden, Heather E., and Christopher D. Knightes. Simulated watershed mercury and nitrate flux responses to multiple land cover conversion scenarios Environmental Toxicology and Chemistry, 30(4): 773-786, April 2011. ISSN 0730-7268. http://dx.doi.org/10.1002/etc.449 Grace, Peter R., G. Philip Robertson, Neville Millar, Manuel Colunga-Garcia, Bruno Basso, Stuart H. Gage, and John Hoben. The contribution of maize cropping in the Midwest USA to global warming: A regional estimate Agricultural Systems, 104(3): 292-296, March 2011. ISSN 0308-521X. http://dx.doi.org/10.1016/j.agsy.2010.09.001 Griffin, Jacob M., Monica G. Turner, and Martin Simard. Nitrogen cycling following mountain pine beetle disturbance in lodgepole pine forests of Greater Yellowstone Forest Ecology and Management, 261(6): 1077-1089, March 15, 2011. ISSN 0378-1127. http://dx.doi.org/10.1016/j.foreco.2010.12.031 Gu, Baojing, Yimei Zhu, Jie Chang, Changhui Peng, Dong Liu, Yong Min, Weidong Luo, Robert W. Howarth, and Ying Ge. The role of technology and policy in mitigating regional nitrogen pollution Environmental Research Letters, 6(1): 014011, January-March 2011. ISSN 1748-9326. http://dx.doi.org/10.1088/1748-9326/6/1/014011 Guan, Baohua, Shuqing An, and Binhe Gu. Assessment of ecosystem health during the past 40 years for Lake Taihu in the Yangtze River Delta, China Limnology, 12(1): 47-53, April 2011. ISSN 1439-8621. http://dx.doi.org/10.1007/s10201-010-0320-6

Guerrieri, R., M. Mencuccini, L. J. Sheppard, M. Saurer, M. P. Perks, P. Levy, M. A. Sutton, M. Borghetti, and J. Grace. The legacy of enhanced N and S deposition as revealed by the combined analysis of delta 13C, delta 18O and delta 15N in tree rings Global Change Biology, 17(5): 1946-1962, May 2011. ISSN 1354-1013. http://dx.doi.org/10.1111/j.1365-2486.2010.02362.x Guo, Jia, Mingqian Zhang, Li Zhang, Aixing Deng, Xinmin Bian, Jianguo Zhu, and Weijian Zhang. Responses of dissolved organic carbon and dissolved nitrogen in surface water and soil to CO2 enrichment in paddy field Agriculture Ecosystems & Environment, 140(1-2): 273-279, January 30, 2011. ISSN 0167-8809. http://dx.doi.org/10.1016/j.agee.2010.12.014 Haese, Ralf R., and Geertje J. Pronk. Intra-annual variability in primary producer groups and nitrogen dynamics in an intermittently closed estuary exposed to Mediterranean climate Estuaries and Coasts, 34(3): 557-568, May 2011. ISSN 1559-2723. http://dx.doi.org/10.1007/s12237-010-9363-5 Hallsworth, S., A. J. Dore, W. I. Bealey, U. Dragosits, M. Vieno, S. Hellsten, Y. S. Tang, and M. A. Sutton. The role of indicator choice in quantifying the threat of atmospheric ammonia to the 'Natura 2000' network Environmental Science & Policy, 13(8): 671-687, December 2010. ISSN 1462-9011. http://dx.doi.org/10.1016/j.envsci.2010.09.010 Han, Xiangwei, Atsushi Tsunekawa, Mitsuru Tsubo, and Shiqing Li. Aboveground biomass response to increasing nitrogen deposition on grassland on the northern Loess Plateau of China Acta Agriculturae Scandinavica Section B-Soil and Plant Science, 61(2): 112-121, 2011. ISSN 0906-4710. http://dx.doi.org/10.1080/09064710903544201 Han, Yuguo, Xuyong Li, Zhe Nan. Net anthropogenic nitrogen accumulation in the Beijing metropolitan region Environmental Science and Pollution Research, 18(3): 485-496, March 2011. ISSN 0944-1344. http://dx.doi.org/10.1007/s11356-010-0394-z Harrison, Melanie D., Peter M. Groffman, Paul M. Mayer, Sujay S. Kaushal, and Tamara A. Newcomer. Denitrification in alluvial wetlands in an urban landscape Journal of Environmental Quality, 40(2): 634-646, March 2011. ISSN 0047-2425. http://dx.doi.org/10.2134/jeq2010.0335

Hashimoto, Shoji, Tomoaki Morishita, Tadashi Sakata, Shigehiro Ishizuka, Shinji Kaneko, and Masamichi Takahashi. Simple models for soil CO2, CH4, and N2O fluxes calibrated using a Bayesian approach and multi-site data Ecological Modelling, 222(7): 1283-1292, April 10, 2011. ISSN 0304-3800. http://dx.doi.org/10.1016/j.ecolmodel.2011.01.013 Hauck, Markus Eutrophication threatens the biochemical diversity in lichens Lichenologist, 43(2): 147-154, March 2011. ISSN 0024-2829. http://dx.doi.org/10.1017/S0024282910000654 Herbst, Mathias, Thomas Friborg, Rasmus Ringgaard, and Henrik Soegaard. Catchment-wide atmospheric greenhouse gas exchange as influenced by land use diversity Vadose Zone Journal, 10(1): 67-77, February 2011. ISSN 1539-1663. http://dx.doi.org/10.2136/vzj2010.0058 Herrmann, Martina, Andrea Scheibe, Sharon Avrahami, and Kirsten Kuesel. Ammonium availability affects the ratio of ammonia-oxidizing bacteria to ammonia-oxidizing archaea in simulated creek ecosystems Applied and Environmental Microbiology, 77(5): 1896-1899, March 2011. ISSN 0099-2240. http://dx.doi.org/10.1128/AEM.02879-10 Hill, Brian H., David W. Bolgrien, Alan T. Herlihy, Terri M. Jicha, and Ted R. Angradi. A synoptic survey of nitrogen and phosphorus in tributary streams and great rivers of the Upper Mississippi, Missouri, and Ohio River basins Water Air and Soil Pollution, 216(1-4): 605-619, March 2011. ISSN 0049-6979. http://dx.doi.org/10.1007/s11270-010-0556-0 Hong, Bongghi, Dennis P. Swaney, and Robert W. Howarth. A toolbox for calculating net anthropogenic nitrogen inputs (NANI) Environmental Modelling & Software, 26(5): 623-633, May 2011. ISSN 1364-8152. http://dx.doi.org/10.1016/j.envsoft.2010.11.012 Hu, Bao-lan, Darci Rush, Erwin van der Biezen, Ping Zheng, Mark van Mullekom, Stefan Schouten, Jaap S. Sinninghe Damste, Alfons J. P. Smolders, Mike S. M. Jetten, and Boran Kartal. New anaerobic, ammonium-oxidizing community enriched from peat soil Applied and Environmental Microbiology, 77(3): 966-971, February 2011. ISSN 0099-2240. http://dx.doi.org/10.1128/AEM.02402-10 Huang, Laiming, Jinling Yang, and Ganlin Zhang. Nitrogen sink in a small forested watershed of subtropical China Journal of Environmental Sciences-China, 23(3): 468-475, 2011. ISSN 1001-0742. http://dx.doi.org/10.1016/S1001-0742(10)60432-9

Huang, Y. -C. A., H. J. Hsieh, S. -C. Huang, P. -J. Meng, Y. -S. Chen, S. Keshavmurthy, Y. Nozawa, and C. A. Chen. Nutrient enrichment caused by marine cage culture and its influence on subtropical coral communities in turbid waters Marine Ecology-Progress Series, 423: 83-93, 2011. ISSN 0171-8630. http://dx.doi.org/10.3354/meps08944 Huang, Zhiqun, Peter W. Clinton, W. Troy Baisden, and Murray R. Davis. Long-term nitrogen additions increased surface soil carbon concentration in a forest plantation despite elevated decomposition Soil Biology & Biochemistry, 43(2): 302-307, February 2011. ISSN 0038-0717. http://dx.doi.org/10.1016/j.soilbio.2010.10.015 Ibanhez, J. Severino P., Catarina Leote, and Carlos Rocha. Porewater nitrate profiles in sandy sediments hosting submarine groundwater discharge described by an advection-dispersion-reaction model Biogeochemistry, 103(1-3): 159-180, April 2011. ISSN 0168-2563. http://dx.doi.org/10.1007/s10533-010-9454-1 Jassal, Rachhpal S., T. Andrew Black, Real Roy, and Gilbert Ethier. Effect of nitrogen fertilization on soil CH4 and N2O fluxes, and soil and bole respiration Geoderma, 162(1-2): 182-186, April 15, 2011. ISSN 0016-7061. http://dx.doi.org/10.1016/j.geoderma.2011.02.002 Jeffers, Elizabeth S., Michael B. Bonsall, and Kathy J. Willis. Stability in ecosystem functioning across a climatic threshold and contrasting forest regimes PLOS One, 6(1): e16134, January 18, 2011. ISSN 1932-6203. http://dx.doi.org/10.1371/journal.pone.0016134 Jirousek, Martin, Michal Hajek, and Luca Bragazza. Nutrient stoichiometry in Sphagnum along a nitrogen deposition gradient in highly polluted region of Central-East Europe Environmental Pollution, 159(2): 585-590, February 2, 2011. ISSN 0269-7491. http://dx.doi.org/10.1016/j.envpol.2010.10.004 Jordan, Stephen J., Jonathan Stoffer, and Janet A. Nestlerode. Wetlands as sinks for reactive nitrogen at continental and global scales: a meta-analysis Ecosystems, 14(1): 144-155, January 2011. ISSN 1432-9840. http://dx.doi.org/10.1007/s10021-010-9400-z Jung, Hoon-Shin, and Zhi-Qiang Deng. Modeling of nitrogen retention in Amite River Water Air and Soil Pollution, 215(1-4): 411-425, February 2011. ISSN 0049-6979. http://dx.doi.org/10.1007/s11270-010-0487-9

Kaczmarsky, L., and L. L. Richardson. Do elevated nutrients and organic carbon on Philippine reefs increase the prevalence of coral disease? Coral Reefs, 30(1): 253-257, March 2011. ISSN 0722-4028. http://dx.doi.org/10.1007/s00338-010-0686-2 Kahrl, Fredrich, Yunju Li, Yufang Su, Timm Tennigkeit, Andreas Wilkes, and Jianchu Xu. Greenhouse gas emissions from nitrogen fertilizer use in China Environmental Science & Policy, 13(8): 688-694, December 2010. ISSN 1462-9011. http://dx.doi.org/10.1016/j.envsci.2010.07.006 Kang, Hongzhang, Honglei Zhuang, Lili Wu, Qunlu Liu, Guangrong Shen, Bjorn Berg, Rongzhou Man, and Chunjiang Liu. Variation in leaf nitrogen and phosphorus stoichiometry in Picea abies across Europe: an analysis based on local observations Forest Ecology and Management, 261(2): 195-202, January 15, 2011. ISSN 0378-1127. http://dx.doi.org/10.1016/j.foreco.2010.10.004 Kariyapperuma, Kumudinie A., Claudia Wagner-Riddle, Adriana C. Furon, and Changsheng Li. Assessing spring thaw nitrous oxide fluxes simulated by the DNDC model for agricultural soils Soil Science Society of America Journal, 75(2): 678-690, March-April 2011. ISSN 0361-5995. http://dx.doi.org/10.2136/sssaj2010.0264 Keller, David P., and Raleigh R. Hood. Modeling the seasonal autochthonous sources of dissolved organic carbon and nitrogen in the upper Chesapeake Bay Ecological Modelling, 222(5): 1139-1162, March 10, 2011. ISSN 0304-3800. http://dx.doi.org/10.1016/j.ecolmodel.2010.12.014 Keller, Troy A., Gary W. Shenk, Michael R. Williams, and Richard A. Batiuk. Development of a new indicator of pollutant loads and its application to the Chesapeake Bay watershed River Research and Applications, 27(2): 202-212, February 2011. ISSN 1535-1459. http://dx.doi.org/10.1002/rra.1351 Kerr, Jason Grainger, Michele Burford, Jon Olley, and James Udy. Nitrogen and phosphorus storage in contrasting reaches of a sub-tropical river system Water Air and Soil Pollution, 217(1-4) : 523-534, May 2011. ISSN 0049-6979. http://dx.doi.org/10.1007/s11270-010-0606-7 Wesley A. Ket, Joseph P. Schubauer-Berigan, and Christopher B. Craft. Effects of five years of nitrogen and phosphorus additions on a Zizaniopsis miliacea tidal freshwater marsh Aquatic Botany, 95(1):17-23, July 2011. ISSN 0304-3770.

http://dx.doi.org/10.1016/j.aquabot.2011.03.003 Klier, C., S. Gayler, C. Haberbosch, R. Ruser, R. Stenger, H. Flessa, and E. Priesack. Modeling nitrous oxide emissions from potato-cropped soil Vadose Zone Journal, 10(1): 184-194, February 2011. ISSN 1539-1663. http://dx.doi.org/10.2136/vzj2009.0194 Knoeller, Kay, Carsten Vogt, Marika Haupt, Stefan Feisthauer, and Hans-Hermann Richnow. Experimental investigation of nitrogen and oxygen isotope fractionation in nitrate and nitrite during denitrification Biogeochemistry, 103(1-3): 371-384, April 2011. ISSN 0168-2563. http://dx.doi.org/10.1007/s10533-010-9483-9 Kothawala, Dolly N., Shaun A. Watmough, Martyn N. Futter, Leiming Zhang, and Peter J. Dillon. Stream nitrate responds rapidly to decreasing nitrate deposition Ecosystems, 14(2): 274-286, March 2011. ISSN 1432-9840. http://dx.doi.org/10.1007/s10021-011-9422-1 Kryza, Maciej, Anthony J. Dore, Marek Blas, and Mieczyslaw Sobik. Modelling deposition and air concentration of reduced nitrogen in Poland and sensitivity to variability in annual meteorology Journal of Environmental Management, 92(4): 1225-1236, April 2011. ISSN 0301-4797. http://dx.doi.org/10.1016/j.jenvman.2010.12.008 Kumar, Sanjeev, Jacques C. Finlay, and Robert W. Sterner. Isotopic composition of nitrogen in suspended particulate matter of Lake Superior: implications for nutrient cycling and organic matter transformation Biogeochemistry, 103(1-3): 1-14, April 2011. ISSN 0168-2563. http://dx.doi.org/10.1007/s10533-010-9441-6 Laini, Alex, Marco Bartoli, Simona Castaldi, Pierluigi Viaroli, Ettore Capri, and Marco Trevisan. Greenhouse gases (CO2, CH4 and N2O) in lowland springs within an agricultural impacted watershed (Po River Plain, northern Italy) Chemistry And Ecology, 27(2): 177-187, 2011. ISSN 0275-7540. http://dx.doi.org/10.1080/02757540.2010.547489 Lambert, Stephen J., and Anthony J. Davy. Water quality as a threat to aquatic plants: discriminating between the effects of nitrate, phosphate, boron and heavy metals on charophytes New Phytologist, 189(4): 1051-1059, 2011. ISSN 0028-646X. http://dx.doi.org/10.1111/j.1469-8137.2010.03543.x Lamsal, L. N., R. V. Martin, A. Padmanabhan, A. van Donkelaar, Q. Zhang, C. E. Sioris, K. Chance, T. P. Kurosu, and M. J. Newchurch.

Application of satellite observations for timely updates to global anthropogenic NOx emission inventories Geophysical Research Letters, 38: L05810, March 15, 2011. ISSN 0094-8276. http://dx.doi.org/10.1029/2010GL046476 Lang, Man, Zucong Cai, and Scott X. Chang. Effects of land use type and incubation temperature on greenhouse gas emissions from Chinese and Canadian soils Journal of Soils and Sediments, 11(1): 15-24, January 2011. ISSN 1439-0108. http://dx.doi.org/10.1007/s11368-010-0260-0 Lapointe, Brian E., and Bradley J. Bedford. Stormwater nutrient inputs favor growth of non-native macroalgae (Rhodophyta) on O'ahu, Hawaiian Islands Harmful Algae, 10(3): 310-318, March 2011. ISSN 1568-9883. http://dx.doi.org/10.1016/j.hal.2010.11.004 Lilleskov, E. A., E. A. Hobbie, and T. R. Horton. Conservation of ectomycorrhizal fungi: exploring the linkages between functional and taxonomic responses to anthropogenic N deposition Fungal Ecology, 4(2): 174-183, April 2011. ISSN 1754-5048. http://dx.doi.org/10.1016/j.funeco.2010.09.008 Lin, Jing, and Jie Li. Nutrient response modeling in Falls of the Neuse Reservoir Environmental Management, 47(3): 398-409, March 2011. ISSN 0364-152X. http://dx.doi.org/10.1007/s00267-011-9617-4 Lin, Shan, Javed Iqbal, Ronggui Hu, Jinshui Wu, Jinsong Zhao, Leilei Ruan, and Saadatullah Malghani. Nitrous oxide emissions from rape field as affected by nitrogen fertilizer management: A case study in Central China Atmospheric Environment, 45(9): 1775-1779, March 2011. ISSN 1352-2310. http://dx.doi.org/10.1016/j.atmosenv.2011.01.003 Lu, Meng, Yuanhe Yang, Yiqi Luo, Changming Fang, Xuhui Zhou, Jiakuan Chen, Xin Yang, and Bo Li. Responses of ecosystem nitrogen cycle to nitrogen addition: a meta-analysis New Phytologist, 189(4): 1040-1050, 2011. ISSN 0028-646X. http://dx.doi.org/10.1111/j.1469-8137.2010.03563.x Lugato, Emanuele, Michel Zuliani, Giorgio Alberti, Gemini Delle Vedove, Beniamino Gioli, Franco Miglietta, and Alessandro Peressotti. Application of DNDC biogeochemistry model to estimate greenhouse gas emissions from Italian agricultural areas at high spatial resolution Agriculture Ecosystems & Environment, 139(4): 546-556, December 15, 2010. ISSN 0167-8809

http://dx.doi.org/10.1016/j.agee.2010.09.015 Lv, Jin, Hongjuan Wu, and Mengqiu Chen. Effects of nitrogen and phosphorus on phytoplankton composition and biomass in 15 subtropical, urban shallow lakes in Wuhan, China Limnologica, 41(1): 48-56, February 2011. ISSN 0075-9511. http://dx.doi.org/10.1016/j.limno.2010.03.003 Lynch, Patrick D., Mark J. Brush, and Robert J. Latour. Simulated short-term impacts of the Atlantic menhaden reduction fishery on Chesapeake Bay water quality North American Journal of Fisheries Management, 31(1): 70-78, 2011. ISSN 0275-5947. http://dx.doi.org/10.1080/02755947.2011.559850 Maloney, Bridget, Thomas M. Iliffe, Frances Gelwick, and Antonietta Quigg. Effect of nutrient enrichment on naturally occurring macroalgal species in six cave pools in Bermuda Phycologia, 50(2): 132-143, March 2011. ISSN 0031-8884. http://dx.doi.org/10.2216/09-83.1 Maloney, Kelly O., and Donald E. Weller. Anthropogenic disturbance and streams: land use and land-use change affect stream ecosystems via multiple pathways Freshwater Biology, 56(3): 611-626, March 2011. ISSN 0046-5070. http://dx.doi.org/10.1111/j.1365-2427.2010.02522.x Mastrocicco, Micol, Nicolo Colombani, Giuseppe Castaldelli, and Nebo Jovanovic. Monitoring and modeling nitrate persistence in a shallow aquifer Water Air and Soil Pollution, 217(1-4): 83-93, May 2011. ISSN 0049-6979. http://dx.doi.org/10.1007/s11270-010-0569-8 McLenaghan, Natalie A., Anna Christina Tyler, Ursula H. Mahl, Robert W. Howarth, and Roxanne M. Marino. Benthic macroinvertebrate functional diversity regulates nutrient and algal dynamics in a shallow estuary Marine Ecology-Progress Series, 426: 171-184, 2011. ISSN 0171-8630. http://dx.doi.org/10.3354/meps09029 Merseburger, Gora, Eugenia Marti, Francesc Sabater, and Jesus D. Ortiz. Point-source effects on N and P uptake in a forested and an agricultural Mediterranean streams Science of the Total Environment, 409(5): 957-967, February 1, 2011. ISSN 0048-9697. http://dx.doi.org/10.1016/j.scitotenv.2010.11.014 Min, Yong, Wei Gong, Xiaogang Jin, Jie Chang, Baojing Gu, Zhen Han, and Ying Ge.

NCNA: Integrated platform for constructing, visualizing, analyzing and sharing human-mediated nitrogen biogeochemical networks Environmental Modelling & Software, 26(5): 678-679, May 2011. ISSN 1364-8152. http://dx.doi.org/10.1016/j.envsoft.2010.11.002 Misselbrook, T. H., J. N. Cape, L. M. Cardenas, D. R. Chadwick, U. Dragosits, P. J. Hobbs, E. Nemitz, S. Reis, U. Skiba, and M. A. Sutton. Key unknowns in estimating atmospheric emissions from UK land management Atmospheric Environment, 45(5): 1067-1074, February 2011. ISSN 1352-2310. http://dx.doi.org/10.1016/j.atmosenv.2010.11.014 Moldan, Filip, and Richard F. Wright. Nitrogen leaching and acidification during 19 years of NH4NO3 additions to a coniferous-forested catchment at Gardsjon, Sweden (NITREX) Environmental Pollution, 159(2): 431-440, February 2, 2011. ISSN 0269-7491. http://dx.doi.org/10.1016/j.envpol.2010.10.025 Moore, Trisha L. C., William F. Hunt, Michael R. Burchell, and Jon M. Hathaway. Organic nitrogen exports from urban stormwater wetlands in North Carolina Ecological Engineering, 37(4): 589-594, April 2011. ISSN 0925-8574. http://dx.doi.org/10.1016/j.ecoleng.2010.12.015 Munoz-Leoz, Borja, Inaki Antigueedad, Carlos Garbisu, and Estilita Ruiz-Romera. Nitrogen transformations and greenhouse gas emissions from a riparian wetland soil: an undisturbed soil column study Science of the Total Environment, 409(4): 763-770, January 15, 2011. ISSN 0048-9697. http://dx.doi.org/10.1016/j.scitotenv.2010.10.008 Nettleton, W. D., and F. F. Peterson. Landform, soil, and plant relationships to nitrate accumulation, Central Nevada Geoderma, 160(3-4): 265-270, January 15, 2011. ISSN 0016-7061. http://dx.doi.org/10.1016/j.geoderma.2010.08.005 Nikanorov, A. M., M. P. Smirnov, and O. A. Klimenko. Long-term trends in total and anthropogenic discharge of organic and biogenic substances by Russian rivers into the Arctic and Pacific seas Water Resources, 37(3): 361-371, May 2010. ISSN 0097-8078. http://dx.doi.org/10.1134/S0097807810030103 Nogales, Balbina, Mariana P. Lanfranconi, Juana M. Pina-Villalonga, and Rafael Bosch. Anthropogenic perturbations in marine microbial communities FEMS Microbiology Reviews, 35(2): 275-298, March 2011. ISSN 0168-6445. http://dx.doi.org/10.1111/j.1574-6976.2010.00248.x Ochoa-Hueso, Raul, and Esteban Manrique.

Effects of nitrogen deposition and soil fertility on cover and physiology of Cladonia foliacea (Huds.) Willd., a lichen of biological soil crusts from Mediterranean Spain Environmental Pollution, 159(2): 449-457, February 2, 2011. ISSN 0269-7491. http://dx.doi.org/10.1016/j.envpol.2010.10.021 Paerl, Hans W., Nathan S. Hall, and Elizabeth S. Calandrino. Controlling harmful cyanobacterial blooms in a world experiencing anthropogenic and climatic-induced change Science of the Total Environment, 409(10): 1739-1745, April 15, 2011. ISSN 0048-9697. http://dx.doi.org/10.1016/j.scitotenv.2011.02.001 Paerl, Hans W., Hai Xu, Mark J. McCarthy, Guangwei Zhu, Boqiang Qin, Yiping Li, and Wayne S. Gardner. Controlling harmful cyanobacterial blooms in a hyper-eutrophic lake (Lake Taihu, China): The need for a dual nutrient (N & P) management strategy Water Research, 45(5): 1973-1983, February 2011. ISSN 0043-1354. http://dx.doi.org/10.1016/j.watres.2010.09.018 Pannatier, Elisabeth Graf, Anne Thimonier, Maria Schmitt, Lorenz Walthert, and Peter Waldner. A decade of monitoring at Swiss Long-Term Forest Ecosystem Research (LWF) sites: can we observe trends in atmospheric acid deposition and in soil solution acidity? Environmental Monitoring and Assessment, 174(1-4): 3-30, March 2011. ISSN 0167-6369. http://dx.doi.org/10.1007/s10661-010-1754-3 Pereira, Engil Isadora Pujol, Haegeun Chung, Kate Scow, Michael J. Sadowsky, Chris van Kessel, and Johan Six. Soil nitrogen transformations under elevated atmospheric CO2 and O-3 during the soybean growing season Environmental Pollution, 159(2): 401-407, February 2, 2011. ISSN 0269-7491. http://dx.doi.org/10.1016/j.envpol.2010.10.033 Philippe, Elodie, Florence Habets, Emmanuel Ledoux, Patrick Goblet, Pascal Viennot, and Bruno Mary. Improvement of the solute transfer in a conceptual unsaturated zone scheme: a case study of the Seine River basin Hydrological Processes, 25(5): 752-765, February 28, 2011. ISSN 0885-6087. http://dx.doi.org/10.1002/hyp.7865 Physick, William, Jennifer Powell, Martin Cope, Kate Boast, and Sunhee Lee. Measurements of personal exposure to NO2 and modelling using ambient concentrations and activity data Atmospheric Environment, 45(12): 2095-2102, April 2011. ISSN 1352-2310. http://dx.doi.org/10.1016/j.atmosenv.2011.01.063 Prendergast-Miller, Miranda T., Elizabeth M. Baggs, and David Johnson.

Nitrous oxide production by the ectomycorrhizal fungi Paxillus involutus and Tylospora fibrillosa FEMS Microbiology Letters, 316(1): 31-35, March 2011. ISSN 0378-1097. http://dx.doi.org/10.1111/j.1574-6968.2010.02187.x Proell, Gisela, Stefan Dullinger, Thomas Dirnboeck, Christina Kaiser, and Andreas Richter. Effects of nitrogen on tree recruitment in a temperate montane forest as analysed by measured variables and Ellenberg indicator values Preslia, 83(1): 111-127, February 2011. ISSN 0032-7786 http://www.ibot.cas.cz/preslia/2011.html#proll Puckett, Larry J., Anthony J. Tesoriero, and Neil M. Dubrovsky. Nitrogen contamination of surficial aquifers - a growing legacy Environmental Science & Technology, 45(3): 839-844, February 1, 2011. ISSN 0013-936X. http://dx.doi.org/10.1021/es1038358 Qi, Zhiming, Matthew J. Helmers, and Amy L. Kaleita. Soil water dynamics under various agricultural land covers on a subsurface drained field in north-central Iowa, USA Agricultural Water Management, 98(4): 665-674, February 2011. ISSN 0378-3774. http://dx.doi.org/10.1016/j.agwat.2010.11.004 Racchetti, E., Bartoli, Marco, E. Soana, D. Longhi, R. R. Christian, M. Pinardi, and P. Viaroli. Influence of hydrological connectivity of riverine wetlands on nitrogen removal via denitrification Biogeochemistry, 103(1-3): 335-354, April 2011. ISSN 0168-2563. http://dx.doi.org/10.1007/s10533-010-9477-7 Raciti, Steve M., Peter M. Groffman, Jennifer C. Jenkins, Richard V. Pouyat, Timothy J. Fahey, Steward T. A. Pickett, and Mary L. Cadenasso. Accumulation of carbon and nitrogen in residential soils with different land-use histories Ecosystems, 14(2): 287-297, March 2011. ISSN 1432-9840 http://dx.doi.org/10.1007/s10021-010-9409-3 Rasmussen, Jes Jessen, Annette Baattrup-Pedersen, Tenna Riis, and Nikolai Friberg. Stream ecosystem properties and processes along a temperature gradient Aquatic Ecology, 45(2): 231-242, May 2011. ISSN 1386-2588. http://dx.doi.org/10.1007/s10452-010-9349-1 Riaz, M., I. A. Mian, and M. S. Cresser. How important is plant litter to the regulation of mineral-N leaching to streams in winter? An observations-led experimental approach Soil Use and Management, 27(1): 10-17, March 2011. ISSN 0266-0032. http://dx.doi.org/10.1111/j.1475-2743.2010.00306.x Rosenzweig, Bernice R., James A. Smith, Mary Lynn Baeck, and Peter R. Jaffe.

Monitoring nitrogen loading and retention in an urban stormwater detention pond Journal of Environmental Quality, 40(2): 598-609, March 2011. ISSN 0047-2425. http://dx.doi.org/10.2134/jeq2010.0300 Rousk, Johannes, Philip C. Brookes, and Erland Baath. Fungal and bacterial growth responses to N fertilization and pH in the 150-year 'Park Grass' UK grassland experiment FEMS Microbiology Ecology, 76(1): 89-99, April 2011. ISSN 0168-6496. http://dx.doi.org/10.1111/j.1574-6941.2010.01032.x Rowe, Edwin C., Bridget A. Emmett, Simon M. Smart, and Zoe L. Frogbrook. A new net mineralizable nitrogen assay improves predictions of floristic composition Journal of Vegetation Science, 22(2): 251-261, April 2011. ISSN 1100-9233. http://dx.doi.org/10.1111/j.1654-1103.2010.01241.x Rubasinghege, Gayan, Scott N. Spak, Charles O. Stanier, Gregory R. Carmichael, and Vicki H. Grassian. Abiotic mechanism for the formation of atmospheric nitrous oxide from ammonium nitrate Environmental Science & Technology, 45(7): 2691-2697, April 1, 2011. ISSN 0013-936X. http://dx.doi.org/10.1021/es103295v Ruzicka, James J., Thomas C. Wainwright, and William T. Peterson. A simple plankton model for the Oregon upwelling ecosystem: Sensitivity and validation against time-series ocean data Ecological Modelling, 222(6): 1222-1235, March 24, 2011. ISSN 0304-3800. http://dx.doi.org/10.1016/j.ecolmodel.2011.01.001 Sanz, J., V. Bermejo, R. Muntifering, I. Gonzalez-Fernandez, B. S. Gimeno, S. Elvira, and R. Alonso. Plant phenology, growth and nutritive quality of Briza maxima: Responses induced by enhanced ozone atmospheric levels and nitrogen enrichment Environmental Pollution, 159(2): 423-430, February 2, 2011. ISSN 0269-7491. http://dx.doi.org/10.1016/j.envpol.2010.10.026 Saros, Jasmine E., David W. Clow, Tamara Blett, and Alexander P. Wolfe. Critical nitrogen deposition loads in high-elevation lakes of the western US inferred from paleolimnological records Water Air and Soil Pollution, 216(1-4): 193-202, March 2011. ISSN 0049-6979. http://dx.doi.org/10.1007/s11270-010-0526-6 Schade, John D., Keeley MacNeill, Steve A. Thomas, F. Camille McNeely, Jill R. Welter, James Hood, Maria Goodrich, Mary E. Power, and Jacques C. Finlay. The stoichiometry of nitrogen and phosphorus spiralling in heterotrophic and autotrophic streams Freshwater Biology, 56(3): 424-436, March 2011. ISSN 0046-5070.

http://dx.doi.org/10.1111/j.1365-2427.2010.02509.x Siemion, Jason, Douglas A. Burns, Peter S. Murdoch, and Rene H. Germain. The relation of harvesting intensity to changes in soil, soil water, and stream chemistry in a northern hardwood forest, Catskill Mountains, USA Forest Ecology and Management, 261(9): 1510-1519, May 1, 2011. ISSN 0378-1127. http://dx.doi.org/10.1016/j.foreco.2011.01.036 Sohier, C., and A. Degre. Modelling the effects of the current policy measures in agriculture: An unique model from field to regional scale in Walloon region of Belgium Environmental Science & Policy, 13(8): 754-765, December 2010. ISSN 1462-9011. http://dx.doi.org/10.1016/j.envsci.2010.08.008 Sonneveld, Matthijs P. W., and Egbert A. Lantinga. The contribution of mineralization to grassland N uptake on peatland soils with anthropogenic A horizons Plant and Soil, 340(1-2, Sp. Iss. SI): 357-368, March 2011. ISSN 0032-079X. http://dx.doi.org/10.1007/s11104-010-0608-7 Sparrius, Laurens B., Annemieke M. Kooijman. Invasiveness of Campylopus introflexus in drift sands depends on nitrogen deposition and soil organic matter Applied Vegetation Science, 14(2): 221-229, April 2011. ISSN 1402-2001. http://dx.doi.org/10.1111/j.1654-109X.2010.01120.x Stelzer, Robert S., Damion R. Drover, Susan L. Eggert, and Maureen A.Muldoon. Nitrate retention in a sand plains stream and the importance of groundwater discharge Biogeochemistry, 103(1-3): 91-107, April 2011. ISSN 0168-2563. http://dx.doi.org/10.1007/s10533-010-9449-y Stevens, Carly, Cecilia Dupre, Cassandre Gaudnik, Edu Dorland, Nancy Dise, David Gowing, Albert Bleeker, Didier Alard, Roland Bobbink, David Fowler, Vigdis Vandvik, Emmanuel Corcket, J. Owen Mountford, Per Arild Aarrestad, Serge Muller, and Martin Diekmann. Changes in species composition of European acid grasslands observed along a gradient of nitrogen deposition Journal of Vegetation Science, 22(2): 207-215, April 2011. ISSN 1100-9233. http://dx.doi.org/10.1111/j.1654-1103.2010.01254.x Stevens, Carly J., Pete Manning, Leon J. L. van den Berg, Maaike C. C. de Graaf, G. W. Wieger Wamelink, Andries W. Boxman, Albert Bleeker, Philippine Vergeer, Maria Arroniz-Crespo, Juul Limpens, Leon P. M. Lamers, Roland Bobbink, Edu Dorland. Ecosystem responses to reduced and oxidised nitrogen inputs in European terrestrial habitats Environmental Pollution, 159(3): 665-676, March 2011. ISSN 0269-7491. http://dx.doi.org/10.1016/j.envpol.2010.12.008

Sundback, Kristina, Elin Lindehoff, and Edna Graneli Dissolved organic nitrogen: an important source of nitrogen for the microphytobenthos in sandy sediment Aquatic Microbial Ecology, 63(1): 89-100, 2011. ISSN 0948-3055. http://dx.doi.org/10.3354/ame01479 Sutton, Mark A., Oene Oenema, Jan Willem Erisman, Adrian Leip, Hans van Grinsven, and Wilfried Winiwarter . Too much of a good thing Nature, 472(7342): 159–161, April 14, 2011. ISSN 0028-0836. http://dx.doi.org/10.1038/472159a Tabayashi, Yu, and Keisuke Koba. Heterogeneous atmospheric nitrogen deposition effects upon the nitrate concentration of stream waters in a forested mountain area Water Air and Soil Pollution, 216(1-4): 105-115, March 2011. ISSN 0049-6979. http://dx.doi.org/10.1007/s11270-010-0519-5 Teh, Yit Arn, Whendee L. Silver, Oliver Sonnentag, Matteo Detto, Maggi Kelly, and Dennis D. Baldocchi. Large greenhouse gas emissions from a temperate peatland pasture Ecosystems, 14(2): 311-325, March 2011. ISSN 1432-9840. http://dx.doi.org/10.1007/s10021-011-9411-4 Teira, Eva, Sandra Martinez-Garcia, Catia Carreira, and Xose-Anxelu G. Moran. Changes in bacterioplankton and phytoplankton community composition in response to nutrient additions in coastal waters off the NW Iberian Peninsula Marine Ecology-Progress Series, 426: 87-104, 2011. ISSN 0171-8630. http://dx.doi.org/10.3354/meps09008 Temme, A. J. A. M., and P. H. Verburg. Mapping and modelling of changes in agricultural intensity in Europe Agriculture Ecosystems & Environment, 140(1-2): 46-56, January 30, 2011. ISSN 0167-8809. http://dx.doi.org/10.1016/j.agee.2010.11.010 Templer, P. H., and K. C. Weathers. Use of mixed ion exchange resin and the denitrifier method to determine isotopic values of nitrate in atmospheric deposition and canopy throughfall Atmospheric Environment, 45(11): 2017-2020, April 2011. ISSN 1352-2310. http://dx.doi.org/10.1016/j.atmosenv.2011.01.035 Tiemann, Lisa K., and Sharon A. Billings. Indirect effects of nitrogen amendments on organic substrate quality increase enzymatic activity driving decomposition in a mesic grassland Ecosystems, 14(2): 234-247, March 2011. ISSN 1432-9840.

http://dx.doi.org/10.1007/s10021-010-9406-6 Tortosa, German, David Correa, A. Juan Sanchez-Raya, Antonio Delgado, Miguel A. Sanchez-Monedero, and Eulogio J. Bedmar. Effects of nitrate contamination and seasonal variation on the denitrification and greenhouse gas production in La Rocina Stream (Donana National Park, SW Spain) Ecological Engineering, 37(4): 539-548, April 2011. ISSN 0925-8574. http://dx.doi.org/10.1016/j.ecoleng.2010.06.029 Townsend-Small, Amy, Diane E. Pataki, Claudia I. Czimczik, Stanley C. Tyler. Nitrous oxide emissions and isotopic composition in urban and agricultural systems in southern California Journal of Geophysical Research-Biogeosciences, 116: G01013, February 4, 2011. ISSN 0148-0227. http://dx.doi.org/10.1029/2010JG001494 Townsend-Small, Amy, James W. McClelland, R. Max Holmes, and Bruce J. Peterson. Seasonal and hydrologic drivers of dissolved organic matter and nutrients in the upper Kuparuk River, Alaskan Arctic Biogeochemistry, 103(1-3): 109-124, April 2011. ISSN 0168-2563. http://dx.doi.org/10.1007/s10533-010-9451-4 Tsunogai, U., S. Daita, D. D. Komatsu, F. Nakagawa, and A. Tanaka. Quantifying nitrate dynamics in an oligotrophic lake using Delta O-17 Biogeosciences, 8(3): 687-702, 2011. ISSN 1726-4170. http://dx.doi.org/10.5194/bg-8-687-2011 Tu, Li-Hua, Ting-Xing Hu, Jian Zhang, Ren-Hong Li, Hong-Zhong Dai, and Shou-Hua Luo. Short-term simulated nitrogen deposition increases carbon sequestration in a Pleioblastus amarus plantation Plant and Soil, 340(1-2, Sp. Iss. SI): 383-396, March 2011. ISSN 0032-079X. http://dx.doi.org/10.1007/s11104-010-0610-0 van Apeldoorn, D. F., M. P. W. Sonneveld, and K. Kok. Landscape asymmetry of soil organic matter as a source of agro-ecosystem resilience Agriculture Ecosystems & Environment, 140(3-4): 401-410, March 2011. ISSN 0167-8809. http://dx.doi.org/10.1016/j.agee.2011.01.002 van Beek, C. L., M. Pleijter, and P. J. Kuikman. Nitrous oxide emissions from fertilized and unfertilized grasslands on peat soil Nutrient Cycling in Agroecosystems, 89(3): 453-461, April 2011. ISSN 1385-1314. http://dx.doi.org/10.1007/s10705-010-9408-y van den Berg, Leon J. L., Philippine Vergeer, Tim C. G. Rich, Simon M. Smart, Dan Guest, and Mike R. Ashmore.

Direct and indirect effects of nitrogen deposition on species composition change in calcareous grasslands Global Change Biology, 17(5): 1871-1883, May 2011. ISSN 1354-1013. http://dx.doi.org/10.1111/j.1365-2486.2010.02345.x van Diepen, Linda T. A., Erik A. Lilleskov, and Kurt S. Pregitzer. Simulated nitrogen deposition affects community structure of arbuscular mycorrhizal fungi in northern hardwood forests Molecular Ecology, 20(4): 799-811, February 2011. ISSN 0962-1083. http://dx.doi.org/10.1111/j.1365-294X.2010.04969.x Van Engeland, Tom, Tjeerd J. Bouma, Edward P. Morris, Fernando G. Brun, Gloria Peralta, Miguel Lara, Iris E. Hendriks, Karline Soetaert, and Jack J.Middelburg. Potential uptake of dissolved organic matter by seagrasses and macroalgae Marine Ecology-Progress Series, 427: 71-81, 2011. ISSN 0171-8630. http://dx.doi.org/10.3354/meps09054 Vanni, Michael J., William H. Renwick, Anna M. Bowling, Martin J. Horgan, Alan D. Christian. Nutrient stoichiometry of linked catchment-lake systems along a gradient of land use Freshwater Biology, 56(5): 791-811, May 2011. ISSN 0046-5070. http://dx.doi.org/10.1111/j.1365-2427.2010.02436.x Vauramo, Saara, Virpi Jaaskelainen, and Heikki Setala. Environmental fate of polycyclic aromatic hydrocarbons under different plant traits in urban soil as affected by nitrogen deposition Applied Soil Ecology, 47(3): 167-175, March 2011. ISSN 0929-1393. http://dx.doi.org/10.1016/j.apsoil.2010.12.009 Verhoeven, J. T. A., B. Beltman, E. Dorland, S. A. Robat, and R. Bobbink. Differential effects of ammonium and nitrate deposition on fen phanerogams and bryophytes Applied Vegetation Science, 14(2): 149-157, April 2011. ISSN 1402-2001. http://dx.doi.org/10.1111/j.1654-109X.2010.01113.x Vermeulen, S., N. Sturaro, S. Gobert, J. M. Bouquegneau, and G. Lepoint. Potential early indicators of anthropogenically derived nutrients: a multiscale stable isotope analysis Marine Ecology-Progress Series, 422: 9-22, 2011. ISSN 0171-8630. http://dx.doi.org/10.3354/meps08919 Vivanco, Lucia, and Amy T. Austin. Nitrogen addition stimulates forest litter decomposition and disrupts species interactions in Patagonia, Argentina Global Change Biology, 17(5): 1963-1974, May 2011. ISSN 1354-1013. http://dx.doi.org/10.1111/j.1365-2486.2010.02344.x

Vogel, Jason G., Luis J. Suau, Timothy A. Martin, Eric J. Jokela. Long-term effects of weed control and fertilization on the carbon and nitrogen pools of a slash and loblolly pine forest in north-central Florida Canadian Journal of Forest Research-Revue Canadienne de Recherche Forestiere, 41(3): 552-567, March 2011. ISSN 0045-5067. http://dx.doi.org/10.1139/X10-234 Wang, Changhui, Klaus Butterbach-Bahl, Yi Han, Qibing Wang, Lihua Zhang, Xingguo Han, and Xuerong Xing. The effects of biomass removal and N additions on microbial N transformations and biomass at different vegetation types in an old-field ecosystem in northern China Plant And Soil, 340(1-2, Sp. Iss. SI): 397-411, March 2011. ISSN 0032-079X. http://dx.doi.org/10.1007/s11104-010-0611-z Wang, Junye, Laura M. Cardenas, Tom H. Misselbrook, and Sarah Gilhespy. Development and application of a detailed inventory framework for estimating nitrous oxide and methane emissions from agriculture Atmospheric Environment, 45(7): 1454-1463, March 2011. ISSN 1352-2310. http://dx.doi.org/10.1016/j.atmosenv.2010.12.014 Wang, Roland W., Lars G. Rudstam, Thomas E. Brooking, David J. Snyder, Mark A. Arrigo, and Edward L. Mills. Food web effects and the disappearance of the spring clear water phase in Onondaga Lake following nutrient loading reductions Lake and Reservoir Management, 26(3): 169-177, 2010. ISSN 1040-2381. http://dx.doi.org/10.1080/07438141.2010.504070 Weir, Lauren, and J. Alan Roberson. National compliance costs from a potential revision to the nitrate regulation Journal American Water Works Association, 103(3): 44, March 2011. ISSN 0003-150X. Wendel, S., T. Moore, J. Bubier, and C. Blodau. Experimental nitrogen, phosphorus, and potassium deposition decreases summer soil temperatures, water contents, and soil CO2 concentrations in a northern bog Biogeosciences, 8(3): 585-595, 2011. ISSN 1726-4170. http://dx.doi.org/10.5194/bg-8-585-2011 Wersal, Ryan M., and John D. Madsen. Influences of water column nutrient loading on growth characteristics of the invasive aquatic macrophyte Myriophyllum aquaticum (Vell.) Verdc. Hydrobiologia, 665(1): 93-105, May 2011. ISSN 0018-8158. http://dx.doi.org/10.1007/s10750-011-0607-6 Wolfe, G. M., and J. A. Thornton. The Chemistry of Atmosphere-Forest Exchange (CAFE) Model - Part 1: Model description and characterization

Atmospheric Chemistry and Physics, 11(1): 77-101, 2011. ISSN 1680-7316. http://dx.doi.org/10.5194/acp-11-77-2011 Wu, Naicheng, Britta Schmalz, and Nicola Fohrer. Distribution of phytoplankton in a German lowland river in relation to environmental factors Journal of Plankton Research, 33(5): 807-820, May 2011. ISSN 0142-7873. http://dx.doi.org/10.1093/plankt/fbq139 Xiao, Hua-Yun, Liang-Hong Wu, Ren-Guo Zhu, Yan-Li Wang, and Cong-Qiang Liu. Nitrogen isotope variations in camphor (Cinnamomum Camphora) leaves of different ages in upper and lower canopies as an indicator of atmospheric nitrogen sources Environmental Pollution, 159(2): 363-367, February 2, 2011. ISSN 0269-7491. http://dx.doi.org/10.1016/j.envpol.2010.11.011 Xing, Yangping, Jill Bubier, Tim Moore, Meaghan Murphy, Nathan Basiliko, Sybille Wendel, and Christian Blodau. The fate of N-15-nitrate in a northern peatland impacted by long term experimental nitrogen, phosphorus and potassium fertilization Biogeochemistry, 103(1-3): 281-296, April 2011. ISSN 0168-2563. http://dx.doi.org/10.1007/s10533-010-9463-0 Ying, J. F., Ch. Xin, and L. A. Cheng. A comparative study on the growth and nutrient uptake characteristics of fifteen wetland species in Taihu Lake region of China International Journal of Environmental Research, 5(2): 361-370, Spring 2011. ISSN 1735-6865. http://ijer.ut.ac.ir/images/Issues/Vol.5,%20No.2,%202011.html Yu Xiao-Fei, Yu-Xia Zhang, Yuan-Chun Zou, Hong-Mei Zhao, Xian-Guo Lu, and Guo-Ping Wang. Adsorption and desorption of ammonium in wetland soils subject to freeze-thaw cycles Pedosphere, 21(2): 251-258, April 2011. ISSN 1002-0160. http://dx.doi.org/10.1016/S1002-0160(11)60125-2 Zarnetske, Jay P., Roy Haggerty, Steven M. Wondzell, and Michelle A. Baker. Dynamics of nitrate production and removal as a function of residence time in the hyporheic zone Journal of Geophysical Research-Biogeosciences, 116: G01025, March 10, 2011. ISSN 0148-0227. http://dx.doi.org/10.1029/2010JG001356 Zhang, H., and K. M. Hiscock. Modelling the effect of forest cover in mitigating nitrate contamination of groundwater: A case study of the Sherwood Sandstone aquifer in the East Midlands, UK Journal of Hydrology, 399(3-4): 212-225, March 18, 2011. ISSN 0022-1694.

http://dx.doi.org/10.1016/j.jhydrol.2010.12.042 Zhang, Kefeng, Tuqiao Zhang, and Dejun Yang. An explicit hydrological algorithm for basic flow and transport equations and its application in agro-hydrological models for water and nitrogen dynamics Agricultural Water Management, 98(1): 114-123, December 1, 2010. ISSN 0378-3774. http://dx.doi.org/10.1016/j.agwat.2010.08.004 Zhang, L. X., H. Qiang, S. Q. Li, and X. L. Chen. Impact of atmospheric ammonia on growth, C and N accumulation and photosynthesis of two maize cultivars with different N root supply Plant Soil and Environment, 57(1): 11-18, 2011. ISSN 1214-1178. http://www.agriculturejournals.cz/publishedArticle?journal=PSE&volume=57&firstPage=11 Zhao, G. J., G. Hoermann, N. Fohrer, H. P. Li, J. F. Gao, and K. Tian. Development and application of a nitrogen simulation model in a data scarce catchment in South China Agricultural Water Management, 98(4): 619-631, February 2011. ISSN 0378-3774 http://dx.doi.org/10.1016/j.agwat.2010.10.022 Zhu, Wei-Xing, and Wenwen Wang. Does soil organic matter variation affect the retention of (NH4+)-N-15 and (NO3-)-N-15 in forest ecosystems? Forest Ecology and Management, 261(3): 675-682, February 1, 2011. ISSN 0378-1127. http://dx.doi.org/10.1016/j.foreco.2010.11.024

Reports Chesapeake Bay Conservation Effects Assessment Project (CEAP) Cropland Modeling Team Assessment of the Effects of Conservation Practices on Cultivated Cropland in the Chesapeake Bay Region Washington, DC: United States Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS), February 2011. http://www.nrcs.usda.gov/technical/nri/ceap/chesapeake_bay/ceap_chesapeake_bay_report.pdf Working in Partnership with States to Address Phosphorus and Nitrogen Pollution through Use of a Framework for State Nutrient Reductions Memorandum from Nancy K. Stoner, Acting Assistant Administrator, to Regional Administrators, Regions 1-10, March 16, 2011. Washington, DC: United States Environmental Protection Agency, Office of Water, 2011. http://op.bna.com/env.nsf/id/jsun-8ezsva/$File/EPAnutrient%20memo.pdf NACWA Nutrient Summit Outcomes and Issue Paper Washington, DC: National Association of Clean Water Agencies, March 2011.

http://op.bna.com/env.nsf/id/fwhe-8f9sq2/$File/Nutrient%20Issue%20Paper%20FINAL.pdf Guide for Chesapeake Bay Jurisdictions for the Development of Phase II Watershed Implementation Plans Washington, DC: United States Environmental Protection Agency, March 30, 2011. http://www.epa.gov/reg3wapd/pdf/pdf_chesbay/GuideforthePhaseIIWIPs_3.30%20final.pdf Coming Together for Clean Water: EPA's Strategy to Protect America's Waters Washington, DC: United States Environmental Protection Agency, March 2011. https://blog.epa.gov/waterforum/wp-content/uploads/2011/04/ComingTogether-for-Clean-Water-FINAL.pdf

Web Pages European Nitrogen Assessment http://www.nine-esf.org/ENA Source: Nitrogen in Europe [NinE]: Current Problems & Future Solutions, 2010. Nitrogen & Global Change: Key findings – future challenges, Conference Programme, Edinburgh (April 11-15, 2011) http://www.nitrogen2011.org/webfm_send/42

Upcoming Events Sixth International Symposium on Non-CO2 Greenhouse Gases (NCGG-6) – Science, Policy and Integration, Amsterdam, the Netherlands, November 2-4, 2011 http://www.ncgg.info/