J
Jonathan M. O'Brien
Researcher at Canisius College
Publications - 26
Citations - 3260
Jonathan M. O'Brien is an academic researcher from Canisius College. The author has contributed to research in topics: Denitrification & Stream metabolism. The author has an hindex of 17, co-authored 25 publications receiving 2891 citations. Previous affiliations of Jonathan M. O'Brien include University of Canterbury & Kansas State University.
Papers
More filters
Journal ArticleDOI
Stream denitrification across biomes and its response to anthropogenic nitrate loading
Patrick J. Mulholland,Patrick J. Mulholland,Ashley M. Helton,Geoffrey C. Poole,Robert O. Hall,Stephen K. Hamilton,Bruce J. Peterson,Jennifer L. Tank,Linda R. Ashkenas,Lee W. Cooper,Clifford N. Dahm,Walter K. Dodds,Stuart E. G. Findlay,Stanley V. Gregory,Nancy B. Grimm,Sherri L. Johnson,William H. McDowell,Judy L. Meyer,H. Maurice Valett,Jackson R. Webster,Clay P. Arango,Jake J. Beaulieu,Jake J. Beaulieu,Melody J. Bernot,Amy J. Burgin,Chelsea L. Crenshaw,Laura T. Johnson,B. R. Niederlehner,Jonathan M. O'Brien,Jody D. Potter,Richard W. Sheibley,Richard W. Sheibley,Daniel J. Sobota,Daniel J. Sobota,Suzanne M. Thomas +34 more
TL;DR: It is demonstrated that excess nitrate in streams elicits a disproportionate increase in the fraction of nitrate that is exported to receiving waters and reduces the relative role of small versus large streams as nitrate sinks.
Journal ArticleDOI
Nitrous oxide emission from denitrification in stream and river networks
Jake J. Beaulieu,Jennifer L. Tank,Stephen K. Hamilton,Wilfred M. Wollheim,Robert O. Hall,Patrick J. Mulholland,Patrick J. Mulholland,Bruce J. Peterson,Linda R. Ashkenas,Lee W. Cooper,Clifford N. Dahm,Walter K. Dodds,Nancy B. Grimm,Sherri L. Johnson,William H. McDowell,Geoffrey C. Poole,H. Maurice Valett,Clay P. Arango,Melody J. Bernot,Amy J. Burgin,Chelsea L. Crenshaw,Ashley M. Helton,Laura T. Johnson,Jonathan M. O'Brien,Jody D. Potter,Richard W. Sheibley,Richard W. Sheibley,Daniel J. Sobota,Suzanne M. Thomas +28 more
TL;DR: It is found that stream denitrification produces N2O at rates that increase with stream water nitrate (NO3−) concentrations, but that <1% of denitrified N is converted to N1O, and it is suggested that increased stream NO3− loading stimulatesDenitrification and concomitant N2o production, but does not increase the N2 O yield.
Journal ArticleDOI
Inter-regional comparison of land-use effects on stream metabolism
Melody J. Bernot,Daniel J. Sobota,Daniel J. Sobota,Robert O. Hall,Patrick J. Mulholland,Walter K. Dodds,Jackson R. Webster,Jennifer L. Tank,Linda R. Ashkenas,Lee W. Cooper,Clifford N. Dahm,Stanley V. Gregory,Nancy B. Grimm,Stephen K. Hamilton,Sherri L. Johnson,William H. McDowell,Judith L. Meyer,Bruce J. Peterson,Geoffrey C. Poole,H. Maurice Valett,Clay P. Arango,Jake J. Beaulieu,Amy J. Burgin,Chelsea L. Crenshaw,Ashley M. Helton,Laura T. Johnson,Jeff Merriam,B. R. Niederlehner,Jonathan M. O'Brien,Jody D. Potter,Richard W. Sheibley,Richard W. Sheibley,Richard W. Sheibley,Suzanne M. Thomas,Kym Wilson +34 more
TL;DR: In this article, the influence of land use on stream metabolism across geographic regions is unknown, and there is limited understanding of how land use may alter variability in ecosystem metabolism across regions.
Journal ArticleDOI
Nitrate removal in stream ecosystems measured by 15N addition experiments: Denitrification
Patrick J. Mulholland,Patrick J. Mulholland,Robert O. Hall,Daniel J. Sobota,Walter K. Dodds,Stuart E. G. Findlay,Nancy B. Grimm,Stephen K. Hamilton,William H. McDowell,Jonathan M. O'Brien,Jennifer L. Tank,Linda R. Ashkenas,Lee W. Cooper,Clifford N. Dahm,Stanley V. Gregory,Sherri L. Johnson,Judy L. Meyer,Bruce J. Peterson,Geoffrey C. Poole,Geoffrey C. Poole,H. Maurice Valett,Jackson R. Webster,Clay P. Arango,Jake J. Beaulieu,Melody J. Bernot,Amy J. Burgin,Chelsea L. Crenshaw,Ashley M. Helton,Laura T. Johnson,B. R. Niederlehner,Jody D. Potter,Richard W. Sheibley,Suzanne M. Thomasn +32 more
TL;DR: In this paper, the authors measured denitrification rates using a field 15N-NO { tracer-addition approach in a large, cross-site study of nitrate uptake in reference, agricultural, and suburban-urban streams.
Journal ArticleDOI
Nitrate removal in stream ecosystems measured by 15N addition experiments: Total uptake
Robert O. Hall,Jennifer L. Tank,Daniel J. Sobota,Patrick J. Mulholland,Patrick J. Mulholland,Jonathan M. O'Brien,Jonathan M. O'Brien,Walter K. Dodds,Jackson R. Webster,H. Maurice Valett,Geoffrey C. Poole,Geoffrey C. Poole,Bruce J. Peterson,Judy L. Meyer,William H. McDowell,Sherri L. Johnson,Stephen K. Hamilton,Nancy B. Grimm,Stanley V. Gregory,C. N. Dahm,Lee W. Cooper,Linda R. Ashkenas,Suzanne M. Thomas,Richard W. Sheibley,Jody D. Potter,B. R. Niederlehner,Laura T. Johnson,Ashley M. Helton,Chelsea M. Crenshaw,Amy J. Burgin,Melody J. Bernot,Jake J. Beaulieu,Clay P. Arangob +32 more
TL;DR: In this paper, the authors measured the uptake length of 15NO { in 72 streams in eight regions across the United States and Puerto Rico to develop quantitative predictive models on controls of NO { uptake length.