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Stream denitrification across biomes and its response to anthropogenic nitrate loading.
Mulholland PJ, Helton AM, Poole GC, Hall RO, Hamilton SK, Peterson BJ, Tank JL, Ashkenas LR, Cooper LW, Dahm CN, Dodds WK, Findlay SE, Gregory SV, Grimm NB, Johnson SL, McDowell WH, Meyer JL, Valett HM, Webster JR, Arango CP, Beaulieu JJ, Bernot MJ, Burgin AJ, Crenshaw CL, Johnson LT, Niederlehner BR, O'Brien JM, Potter JD, Sheibley RW, Sobota DJ, Thomas SM. Mulholland PJ, et al. Among authors: helton am. Nature. 2008 Mar 13;452(7184):202-5. doi: 10.1038/nature06686. Nature. 2008. PMID: 18337819
Nitrous oxide emission from denitrification in stream and river networks.
Beaulieu JJ, Tank JL, Hamilton SK, Wollheim WM, Hall RO Jr, Mulholland PJ, Peterson BJ, Ashkenas LR, Cooper LW, Dahm CN, Dodds WK, Grimm NB, Johnson SL, McDowell WH, Poole GC, Valett HM, Arango CP, Bernot MJ, Burgin AJ, Crenshaw CL, Helton AM, Johnson LT, O'Brien JM, Potter JD, Sheibley RW, Sobota DJ, Thomas SM. Beaulieu JJ, et al. Among authors: helton am. Proc Natl Acad Sci U S A. 2011 Jan 4;108(1):214-9. doi: 10.1073/pnas.1011464108. Epub 2010 Dec 20. Proc Natl Acad Sci U S A. 2011. PMID: 21173258 Free PMC article.
Light and flow regimes regulate the metabolism of rivers.
Bernhardt ES, Savoy P, Vlah MJ, Appling AP, Koenig LE, Hall RO Jr, Arroita M, Blaszczak JR, Carter AM, Cohen M, Harvey JW, Heffernan JB, Helton AM, Hosen JD, Kirk L, McDowell WH, Stanley EH, Yackulic CB, Grimm NB. Bernhardt ES, et al. Among authors: helton am. Proc Natl Acad Sci U S A. 2022 Feb 22;119(8):e2121976119. doi: 10.1073/pnas.2121976119. Proc Natl Acad Sci U S A. 2022. PMID: 35165178 Free PMC article.
Cumulative impacts of mountaintop mining on an Appalachian watershed.
Lindberg TT, Bernhardt ES, Bier R, Helton AM, Merola RB, Vengosh A, Di Giulio RT. Lindberg TT, et al. Among authors: helton am. Proc Natl Acad Sci U S A. 2011 Dec 27;108(52):20929-34. doi: 10.1073/pnas.1112381108. Epub 2011 Dec 12. Proc Natl Acad Sci U S A. 2011. PMID: 22160676 Free PMC article.
Shifting stoichiometry: Long-term trends in stream-dissolved organic matter reveal altered C:N ratios due to history of atmospheric acid deposition.
Rodríguez-Cardona BM, Wymore AS, Argerich A, Barnes RT, Bernal S, Brookshire ENJ, Coble AA, Dodds WK, Fazekas HM, Helton AM, Johnes PJ, Johnson SL, Jones JB, Kaushal SS, Kortelainen P, López-Lloreda C, Spencer RGM, McDowell WH. Rodríguez-Cardona BM, et al. Among authors: helton am. Glob Chang Biol. 2022 Jan;28(1):98-114. doi: 10.1111/gcb.15965. Epub 2021 Nov 5. Glob Chang Biol. 2022. PMID: 34706120 Free PMC article.
15 results