Nitrogen Newsletter Issue 37, December 2012 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, contractor with A SRC Primus, 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 Articles 1 News 8 Reports 9 Web Pages 10 Special Issues Special research section: Water quality and yield benefits of drainage water management in the US Midwest. 2012. J Soil Water Conserv 67(6): 453-524. Available from: http://www.iswconline.Org/content/67/6.toc Articles Adriaenssens S, Staelens J, Wuyts K, Van Wittenberghe S, Wuytack T, Verheyen K, Boeckx P, Samson R. 2012. Canopy uptake of (NH3)-N-15 by four temperate tree species and the interaction with leaf properties. Water Air Soil Poll 223(9): 5643-5657. Available from: http://dx.doi. org/10.1007/s 11270-012-13 04-4 Andert J, Borjesson G, Hallin S. 2012. Temporal changes in methane oxidizing and denitrifying communities and their activities in a drained peat soil. Wetlands 32(6): 1047- 1055. Available from: http://dx.doi.org/10.1007/sl3157-012-Q335-3 Aquilina L, Vergnaud-Ayraud V, Labasque T, Bour O, Molenat J, Ruiz L, de Montety V, De Ridder J, Roques C, Longuevergne L. 2012. Nitrate dynamics in agricultural catchments deduced from groundwater dating and long-term nitrate monitoring in surface- and groundwaters. Sci Total Environ 435: 167-178. Available from: http://dx.doi.Org/10.1016/i.scitotenv.2012.06.028 ------- Badea O, Bytnerowicz A, Silaghi D, Neagu S, Barbu I, Iacoban C, Iacob C, Guiman G, Preda E, Seceleanu I, Oneata M, Dumitru I, Huber V, Iuncu H, Dinca L, Leca S, Taut I. 2012. Status of the Southern Carpathian forests in the long-term ecological research network. Environ Monit Assess 184(12): 7491-7515. Available from: http://dx.doi.ors/10.1007/sl0661-011-2515-7 Bassin S, Schalajda J, Vogel A, Suter M. 2012. Different types of sub-alpine grassland respond similarly to elevated nitrogen deposition in terms of productivity and sedge abundance. J Veg Sci 23(6): 1024-1034. Available from: http://dx.doi.org/10.1111/i.1654- 1103.2012.01422.x Batson JA, Mander U, Mitsch WJ. 2012. Denitrification and a nitrogen budget of created riparian wetlands. J Environ Qual 41(6): 2024-2032. Available from: http://dx.doi. org/10.213 4/i eq2011.0449. Bettez ND, Groffman PM. 2012. Denitrification potential in stormwater control structures and natural riparian zones in an urban landscape. Environ Sci Technol 46(20): 10909-10917. Available from: http://dx.doi.org/10.1021/es301409z Brito AC, Newton A, Tett P, Fernandes TF. 2012. How will shallow coastal lagoons respond to climate change? A modelling investigation. Estuar Coast Shelf S 112(SI): 98-104. Available from: http://dx.doi.Org/10.1016/i.ecss.2011.09.002 Caballero S, Esclapez R, Galindo N, Mantilla E, Crespo J. 2012. Use of a passive sampling network for the determination of urban N02 spatiotemporal variations. Atmos Environ 63: 148-155. Available from: http://dx.doi.Org/10.1016/i.atmosenv.2012.08.071 Carlo TA, Norris AEW. 2012. Direct nitrogen intake by petals. Oikos 121(12): 1953-1958. Available from: http://dx.doi.Org/10.l 111/j. 1600-0706.2012.20527.x Chaudhuri S, Ale S, DeLaune P, Rajan N. 2012. Spatio-temporal variability of groundwater nitrate concentration in Texas: 1960 to 2010. J Environ Qual 41(6): 1806-1817. Available from: http://dx.doi.org/10.2134/ieq2012.0022 Chen LWA, Watson JG, Chow JC, Green MC, Inouye D, Dick K. 2012. Wintertime particulate pollution episodes in an urban valley of the Western US: a case study. Atmos Chem Phys 12(21): 10051-10064. Available from: http://dx.doi.org/10.5194/acp-12-10051-2012 Chen XM, Li YL, Mo JM, Otieno D, Tenhunen J, Yan JH, Liu JX, Zhang DQ. 2012. Effects of nitrogen deposition on soil organic carbon fractions in the subtropical forest ecosystems of S China. J Plant Nutr Soil Sc 175(6): 947-953. Available from: http://dx.doi.org/10.10Q2/ipln.201100059 Cyrys J, et al. 2012. Variation of N02 and NOx concentrations between and within 36 European study areas: Results from the ESCAPE study. Atmos Environ 62: 374-390. Available from: http://dx.doi.Org/10.1016/i.atmosenv.2012.07.080 ------- Day DE, Chen X, Gebhart KA, Carrico CM, Schwandner FM, Benedict KB, Schichtel BA, Collett JL. 2012. Spatial and temporal variability of ammonia and other inorganic aerosol species. Atmos Environ 61: 490-498. Available from: http://dx.doi.ors/10.1016/i.atmosenv.2012.06.045 De Jager NR, Houser JN. 2012. Variation in water-mediated connectivity influences patch distributions of total N, total P, and TN:TP ratios in the Upper Mississippi River, USA. Freshw Sci 31(4): 1254-1272. Available from: http://dx.doi.Org/10.1899/12-035.l Deegan LA, Johnson DS, Warren RS, Peterson BJ, Fleeger JW, Fagherazzi S, Wollheim WM. 2012. Coastal eutrophication as a driver of salt marsh loss. Nature 490(7420): 388-392. Available from: http: //dx. doi. or g/10.103 8/nature 11533 Di Lorenzo T, Brilli M, Del Tosto D, Galassi DMP, Petitta M. 2012. Nitrate source and fate at the catchment scale of the Vibrata River and aquifer (central Italy): an analysis by integrating component approaches and nitrogen isotopes. Environ Earth Sci 67(8): 2383- 2398. Available from: http://dx.doi.org/10.1007/sl2665-Q12-1685-0 Einheuser MD, Nejadhashemi AP, Sowa SP, Wang LZ, Hamaamin YA, Woznicki SA. 2012. Modeling the effects of conservation practices on stream health. Sci Total Environ 435: 380- 391. Available from: http://dx.doi.Org/10.1016/i.scitotenv.2012.07.033 Eugster O, Gruber N. 2012. A probabilistic estimate of global marine N-fixation and denitrification. Global Biogeochem Cy 26: GB4013. Available from: http://dx.doi. org/10.1029/2012GB0043 00 Euring D, Lofke C, Teichmann T, Polle A. 2012. Nitrogen fertilization has differential effects on N allocation and lignin in two Populus species with contrasting ecology. Trees-Struct Funct 26(6): 1933-1942. Available from: http://dx.doi.org/10.1007/s00468-012-0761 -0 Ferm M, Hellsten S. 2012. Trends in atmospheric ammonia and particulate ammonium concentrations in Sweden and its causes. Atmos Environ 61:30-39. Available from: http://dx.doi.Org/10.1016/i.atmosenv.2012.07.010 Fulweiler RW, Rabalais NN, Heiskanen AS. 2012. The eutrophication commandments. Mar Pollut Bull 64(10): 1997-1999. Available from: http://dx.doi.Org/10.1016/i.marpolbul.2012.07.025 Geddes JA, Murphy JG, O'Brien JM, Celarier EA. 2012. Biases in long-term N02 averages inferred from satellite observations due to cloud selection criteria. Remote Sens Environ 124: 210-216. Available from: http://dx.doi.Org/10.1016/i.rse.2012.05.008 Gemitzi A. 2012. Evaluating the anthropogenic impacts on groundwaters; a methodology based on the determination of natural background levels and threshold values. Environ Earth Sci 67(8): 2223-2237. Available from: http://dx.doi.org/10.1007/s 12665-012-1664-5 ------- Hankin SL, Weilhoefer CL, Kaldy JE, DeWitt TH. 2012. Sediment diatom species and community response to nitrogen addition in Oregon (USA) estuarine tidal wetlands. Wetlands 32(6): 1023-1031. Available from: http://dx.doi.org/10.1007/sl3157-012-Q332-6 Hartmann AA, Niklaus PA. 2012. Effects of simulated drought and nitrogen fertilizer on plant productivity and nitrous oxide (N20) emissions of two pastures. Plant Soil 361(1-2): 411-426. Available from: http://dx.doi.org/10.1007/sl 1104-012-1248-x Hasselquist NJ, Metcalfe DB, Hogberg P. 2012. Contrasting effects of low and high nitrogen additions on soil C02 flux components and ectomycorrhizal fungal sporocarp production in a boreal forest. Global Change Biol 18(12): 3596-3605. Available from: http://dx.doi.org/10. Ill 1/gcb. 12001 Heald CL, Collett JL, Lee T, Benedict KB, Schwandner FM, Li Y, Clarisse L, Hurtmans DR, Van Damme M, Clerbaux C, Coheur PF, Philip S, Martin RV, Pye HOT. 2012. Atmospheric ammonia and particulate inorganic nitrogen over the United States. Atmos Chem Phys 12(21): 10295-10312. Available from: http://dx.doi.org/10.5194/acp-12-10295-2012 Jandl R, Smidt S, Schindlbacher A, Englisch M, Zechmeister-Boltenstern S, Mikovits C, Schoftner P, Streb F, Fuchs G. 2012. The carbon and nitrogen biogeochemistry of a montane Norway spruce (Picea abies (L.) Karst.) forest: a synthesis of long-term research. Plant Ecol Divers 5(1): 105-114. Available from: http://dx.doi.org/10.1080/17550874.2Q12.695813 Jantalia CP, Halvorson AD, Follett RF, Alves BJR, Polidoro JC, Urquiaga S. 2012. Nitrogen source effects on ammonia volatilization as measured with semi-static chambers. Agron J 104(6): 1595-1603. Available from: http://dx.doi.org/10.2134/agroni2012.0210 Jin L, Whitehead PG, Futter MN, Lu ZL. 2012. Modelling the impacts of climate change on flow and nitrate in the River Thames: assessing potential adaptation strategies. Hydrol Res 43(6): 902-916. Available from: http://dx.doi.org/10.2166/nh.2011.080 Jovan S, Riddell J, Padgett PE, Nash TH. 2012. Eutrophic lichens respond to multiple forms of N: implications for critical levels and critical loads research. Ecol Appl 22(7): 1910-1922. Available from: http://dx.doi.Org/10.1890/l 1-2075.1 Jungkunst HF, Bargsten A, Timme M, Glatzel S. 2012. Spatial variability of nitrous oxide emissions in an unmanaged old-growth beech forest. J Plant Nutr Soil Sc 175(5): 739-749. Available from: http://dx.doi.org/10.1002/ipin.201100412 Kabir AH, El-Shehawy R. 2012. Expression of nifH, hetR, and ndaF genes in Nodularia spumigena under nitrogen sources. Plant Biosyst 146(4): 992-1000. Available from: http://dx.doi.org/10.1080/11263504.2Q12.663811 Kastendick DN, Zenner EK, Palik BJ, Kolka RK, Blinn CR. 2012. Effects of harvesting on nitrogen and phosphorus availability in riparian management zone soils in Minnesota, USA. Can J Forest Res 42(10): 1784-1791. Available from: http://dx.doi.org/10.1139/X2012-127 ------- Kirchman DL. 2012. Marine archaea take a short cut in the nitrogen cycle. P Natl Acad Sci USA 109(44): 17732-17733. Available from: http://dx.doi.org/10.1073/pnas.1215654109 Knapp AK, Briggs JM, Smith MD. 2012. Community stability does not preclude ecosystem sensitivity to chronic resource alteration. Funct Ecol 26(6): 1231-1233. Available from: http://dx.doi.org/10.111 l/i.l365-2435.2012.02053.x Kohlpaintner M, Huber C, Matejek B, Gottlein A. 2012. Causes for the small scale variability of nitrate concentration in seepage water of an N saturated mature spruce stand. Ann Forest Sci 69(8): 895-905. Available from: http://dx.doi.org/10.1007/sl3595-012-Q218-z Krause K, Providoli I, Currie WS, Bugmann H, Schleppi P. 2012. Long-term tracing of whole catchment N-15 additions in a mountain spruce forest: measurements and simulations with the TRACE model. Trees-Struct Funct 26(6): 1683-1702. Available from: http://dx.doi.org/10.1007/s00468-012-Q737-0 Lang DA, King RS, Scott, JT. 2012. Divergent responses of biomass and enzyme activities suggest differential nutrient limitation in stream periphyton. Freshw Sci 31(4): 1096-1104. Available from: http://dx.doi.org/10.1899/12-031.1 Lee TCH, Kwok OT, Ho KC, Lee FWF. 2012. Effects of different nitrate and phosphate concentrations on the growth and toxin production of an Alexandrium tamarense strain collected from Drake Passage. Mar Environ Res 81:62-69. Available from: http://dx.doi.Org/10.1016/i.marenvres.2012.08.009 Manninen S, Sassi MK, Loven K. 2013. Effects of nitrogen oxides on ground vegetation, Pleurozium schreberi and the soil beneath it in urban forests. Ecol Indie 24: 485-493. Available from: http://dx.doi.Org/10.1016/i.ecolind.2012.08.008 Mendes MP, Ribeiro L, Nascimento J, de Melo TC, Stigter TY, Buxo A. 2012. A groundwater perspective on the river basin management plan for central Portugal - developing a methodology to assess the potential impact of N fertilizers on groundwater bodies. Water Sci Technol 66(10): 2162-2169. Available from: http://dx.doi.org/10.2166/wst.2012.427 Muhid P, Burford MA. 2012. Assessing nutrient limitation in a subtropical reservoir. Inland Waters 2(4): 185-192. Available from: http://dx.doi.Org/10.5268/IW-2.4.468 Nishina K, Akiyama H, Nishimura S, Sudo S, Yagi K. 2012. Evaluation of uncertainties in N20 and NO fluxes from agricultural soil using a hierarchical Bayesian model. J Geophys Res-Biogeo 117:G04008. Available from: http://dx.doi.org/10.1029/2012JG0Q2157 O'Brien AM, Ettinger AK, HilleRisLambers J. 2012. Conifer growth and reproduction in urban forest fragments: Predictors of future responses to global change? Urban Ecosyst 15(4): 879-891. Available from: http://dx.doi.org/10.1007/sll252-012-025Q-7 ------- Oiamo TH, Luginaah IN, Buzzelli M, Tang K, Xu XH, Brook JR, Johnson M. 2012. Assessing the spatial distribution of nitrogen dioxide in London, Ontario. J Air Waste Manage 62(11): 1335-1345. Available from: http://dx.doi.org/10.1080/10962247.2Q12.715114 Pratt KA, Mielke LH, Shepson PB, Bryan AM, Steiner AL, Ortega J, Daly R, Helmig D, Vogel CS, Griffith S, Dusanter S, Stevens PS, Alaghmand M. 2012. Contributions of individual reactive biogenic volatile organic compounds to organic nitrates above a mixed forest. Atmos Chem Phys 12(21): 10125-10143. Available from: http://dx.doi.org/10.5194/acp-12- 10125-2012 Rosamond MS, Thuss SJ, Schiff SL. 2012. Dependence of riverine nitrous oxide emissions on dissolved oxygen levels. Nat Geosci 5(10): 715-718. Available from: http://dx.doi.org/10.1038/NGEQ1556 Roy PO, Huijbregts M, Deschenes L, Margni M. 2012. Spatially-differentiated atmospheric source-receptor relationships for nitrogen oxides, sulfur oxides and ammonia emissions at the global scale for life cycle impact assessment. Atmos Environ 62: 74-81. Available from: http://dx.doi.Org/10.1016/i.atmosenv.2012.07.069 Sainju UM, Stevens WB, Caesar-TonThat T, Liebig MA. 2012. Soil greenhouse gas emissions affected by irrigation, tillage, crop rotation, and nitrogen fertilization. J Environ Qual 41(6): 1774-1786. Available from: http://dx.doi.org/10.2134/ieq2012.0176 Samyn D, Vega CP, Motoyama H, Pohjola VA. 2012. Nitrate and sulfate anthropogenic trends in the 20th century from five Svalbard ice cores. Arct Antarct Alp Res 44(4): 490-499. Available from: http://dx.doi.Org/10.1657/1938-4246-44.4.490 Shrestha J, Niklaus PA, Frossard E, Samaritani E, Huber B, Barnard RL, Schleppi P, Tockner K, Luster J. 2012. Soil nitrogen dynamics in a river floodplain mosaic. J Environ Qual 41(6): 2033-2045. Available from: http://dx.doi.org/10.2134/ieq2012.0059 Sprague LA, Gronberg JAM. 2012. Relating management practices and nutrient export in agricultural watersheds of the United States. J Environ Qual 41(6): 1939-1950. Available from: http://dx.doi.org/10.2134/ieq2012.0073 Standish RJ, Fontaine JB, Harris RJ, Stock WD, Hobbs RJ. 2012. Interactive effects of altered rainfall and simulated nitrogen deposition on seedling establishment in a global biodiversity hotspot. Oikos 121(12): 2014-2025. Available from: http://dx.doi.org/10.111 l/i.l600-0706.2012.20553.x Tuomisto HL, Hodge ID, Riordan P, Macdonald DW. 2012. Does organic farming reduce environmental impacts? - A meta-analysis of European research. J Environ Manage 112: 309-320. Available from: http://dx.doi.Org/10.1016/i.ienvman.2012.08.018 Ulen B, Von Bromssen C, Kyllmar K, Djodjic F, Forsberg LS, Andersson S. 2012. Long-term temporal dynamics and trends of particle-bound phosphorus and nitrate in agricultural ------- stream waters. Acta Agr Scand B-S P 62(2, SI): 217-228. Available from: http://dx.doi.org/10.1080/09064710.2012.69757Q Verstraeten A, Neirynck J, Genouw G, Cools N, Roskams P, Hens M. 2012. Impact of declining atmospheric deposition on forest soil solution chemistry in Flanders, Belgium. Atmos Environ 62: 50-63. Available from: http://dx.doi.Org/10.1016/i.atmosenv.2012.08.017 Von Bertrab MG, Krein A, Stendera S, Thielen F, Hering D. 2013. Is fine sediment deposition a main driver for the composition of benthic macroinvertebrate assemblages? Ecol Indie 24: 589-598. Available from: http://dx.doi.Org/10.1016/i.ecolind.2012.08.001 Walker RV, Beck MB. 2012. Understanding the metabolism of urban-rural ecosystems A multi-sectoral systems analysis. Urban Ecosyst 15(4): 809-848. Available from: http://dx.doi.org/10.1007/sll252-012-Q241-8 Wang LL, Tian HQ, Song CC, Xu XF, Chen GS, Ren W, Lu CQ. 2012. Net exchanges of C02, CH4 and N20 between marshland and the atmosphere in Northeast China as influenced by multiple global environmental changes. Atmos Environ 63: 77-85. Available from: http://dx.doi.Org/10.1016/i.atmosenv.2012.08.069 Wick K, Heumesser C, Schmid E. 2012. Groundwater nitrate contamination: Factors and indicators. J Environ Manage 111: 178-186. Available from: http://dx.doi.Org/10.1016/i.ienvman.2012.06.030 Woods CL, Hunt SL, Morris DM, Gordon AM. 2012. Epiphytes influence the transformation of nitrogen in coniferous forest canopies. Boreal Environ Res 17(6): 411-424. Available from: http: //www. b orenv. net/BER/b er 17 6. htm Yu PT, Sogn TA, Wang YH, Mulder J, Feger KH, Zhu JH. 2012. Simulated effects of climate change and acid deposition on soil chemical conditions in a Masson Pine forest of SW China. J Plant Nutr Soil Sc 175(6): 860-870. Available from: http://dx.doi.org/10.1002/ipln.201100373 Zarnetske JP, Haggerty R, Wondzell SM, Bokil VA, Gonzalez-Pinzon R. 2012. Coupled transport and reaction kinetics control the nitrate source-sink function of hyporheic zones. Water Resour Res 48: W11508. Available from: http://dx.doi.org/10.1029/2012WR011894 Zbieranowski AL, Aherne J. 2012. Spatial and temporal concentration of ambient atmospheric ammonia in southern Ontario, Canada. Atmos Environ 62: 441-450. Available from: http://dx.doi.Org/10.1016/i.atmosenv.2012.08.041 Zbieranowski AL, Aherne J. 2012. Ambient concentrations of atmospheric ammonia, nitrogen dioxide and nitric acid across a rural-urban-agricultural transect in southern Ontario, Canada. Atmos Environ 62: 481-491. Available from: http://dx.doi.Org/10.1016/i.atmosenv.2012.08.040 ------- Zhang W, Zhu XM, Liu L, Fu SL, Chen H, Huang J, Lu XK, Liu ZF, Mo JM. 2012. Large difference of inhibitive effect of nitrogen deposition on soil methane oxidation between plantations with N-fixing tree species and non-N-fixing tree species. J Geophys Res-Biogeo 117: G00N16. Available from: http://dx.doi.org/10.1029/2012JG002094 Zhang WW, Li H, Sun DF, Zhou LD. 2012. A statistical assessment of the impact of agricultural land use intensity on regional surface water quality at multiple scales. Int J Env Res Pub He 9(11): 4170-4186. Available from: http://dx.doi.org/10.3390/iierph9114170 Zhu BL, van Dijk G,Fritz C, Smolders AJP, Pol A, Jetten MSM, Ettwig KF. 2012. Anaerobic oxidization of methane in a minerotrophic peatland: enrichment of nitrite-dependent methane-oxidizing bacteria. Appl Environ Microb 78(24): 8657-8665. Available from: http://dx.doi.org/10.1128/AEM.021Q2-12 News Beeman P. Report: Streams haven't improved in Iowa. DesMoinesRegister.com, 2012 Dec 11. Available from: http://www.desmoinesregister.com/article/2012121 l/NEWS/312110026/1001/?nclick check=l Beeman P. Voluntary basis of pollution-reduction plan criticized: Comments on state strategy to reduce farm runoff show disappointment at lack of enforcement. DesMoinesRegister.com, 2012 Dec 11. Available from: http://www.desmoinesregister.com/article/20121212/NEWS/312120036/Voluntary-basis-of- pollution-reduction-plan-criticized?odvssev=tabltopnewsltext|Frontpage For Bloomberg BNA subscribers (including EPA staff): Day J. Chesapeake Bay: Voluntary toxic reduction goals considered; key study due in January. Daily Environ Rep 2012 Dec 19. Available from: http://esweb.bna.com/eslw/1245/split displav.adp?fedfid=28917889&vname=dennotallissues& wsn=497528000&searchid=19264656&doctvpeid=2&tvpe=date&mode=doc&split=0&scm=124 5&pg=0 Saiyid AH. Water pollution: Survey shows most states use TMDLs, discharge permits to reduce nutrient runoff. Daily Environ Rep 2012 Dec 18. Available from: http://esweb.bna.com/eslw/1245/split displav.adp?fedfid=28912013&vname=dennotallissues& wsn=4975 73 000&searchid= 19264656&doctvpeid=2&tvpe=date&mode=doc&split=0&scm= 124 5&pg=0 Wolski M. Water pollution: Iowa's lack of nonpoint source regulations has left waterways polluted, report says. Daily Environ Rep 2012 Dec 13. Available from: http://esweb.bna.com/eslw/1245/split displav.adp?fedfid=28899064&vname=dennotallissues& ------- wsn=497680000&searchid=19264656&doctvpeid=2&tvpe=date&mode=doc&split=0&scm=124 5&pg=l Standaert M. Air pollution: Chinese plan targets sulfur dioxide, nitrogen oxides, particles, VOCs in 'critical areas'. Daily Environ Rep 2012 Dec 12. Available from: http://esweb.bna.com/eslw/1245/split displav.adp?fedfid=28876818&vname=dennotallissues& wsn=497708500&searchid=19264656&doctvpeid=2&tvpe=date&mode=doc&split=0&scm=124 5&pg=l Air pollution: European Commission calls for input on revision of EU air quality strategy. Daily Environ Rep 2012 Dec 11. Available from: http://esweb.bna.com/eslw/1245/split displav.adp?fedfid=28868452&vname=dennotallissues& wsn=497747000&searchid=19264656&doctvpeid=2&tvpe=date&mode=doc&split=0&scm=124 5&pg=l Day J. Chesapeake Bay: Study shows drop in point source nitrogen, but many facilities violated permit limits. Daily Environ Rep 2012 Dec 7. Available from: http://esweb.bna.com/eslw/1245/split displav.adp?fedfid=28855112&vname=dennotallissues& wsn=497823000&searchid=19264656&doctvpeid=2&tvpe=date&mode=doc&split=0&scm=124 5&pg=l For Greenwire subscribers (including EPA staff): Vaidyanathan G. Air pollution: Oil and gas sites a source of ozone pollution, say U.S. EPA petitioners. Energywire 2012 Dec 20. Available from: http ://www. eenews.net/energywire/2012/12/20/archive/2 Peterka A. Water pollution: Report urges regulatory over voluntary measures to improve Iowa water quality. Greenwire 2012 Dec 11. Available from: http ://www. eenews.net/Greenwire/2012/12/1 l/archive/27 Reports Cox C, H A. 2012. Murky waters: Farm pollution stalls cleanup of Iowa streams. Washington, D.C.: Environmental Working Group. 52 p. Available from: http://static.ewg.org/reports/2012/murky waters/Murky Waters.pdf Fiscal Year 2013 action plan: Strategy for protecting and restoring the Chesapeake Bay Watershed. Executive Order 13508. 2012 Dec 18. Washington, DC: Federal Leadership Committee for the Chesapeake Bay. 47 p. Available from: http://executiveorder.chesapeakebav.net/EO 13508 FY13 Action Plan.pdf State water programs: Nutrient reduction programs and methods. 2012 Dec. Washington, DC: Association of Clean Water Administrators. 106 p. Available from: http ://op .bna. com/env. nsf/r? Open=smiy-93 3 pb 5 ------- The Clean Water Act and the Chesapeake: Enforcement's critical role in restoring the Bay. December 2012. Washington, DC: Environmental Integrity Project. 41 p. Available from: http://environmentalintegrity.ors/news reports/documents/EIPTheCWAandtheChesapeakeDec2 012pdf.pdf Web Pages Chesapeake Bay Executive Order: Protecting and restoring a national treasure [Internet], Annapolis, Md.: Chesapeake Bay Program Office. Available from: http: //executi veorder. che sapeakeb ay. net/ ------- |