Biogeochemistry 1

Session 43 (Contributed)
Wednesday, June 7, 1:30 PM-3:15 PM, Egan 5
Moderator: J.L. Tank

1:30 (278) The influence of riparian zone vegetation on denitrification and the ratio of N₂O:N₂ production.
S.E. Hinshaw, C.S. Fellows, and S.E. Bunn. Centre for Riverine Landscapes, Griffith University, Nathan, Queensland, 4111, Australia

1:45 (279) Riparian zone and in-stream denitrification in three contrasting regions of Australia.
C.S. Fellows¹, C.L. Conway¹, M.E. Grace², K.A. Markwell¹, H.J. Hunter³, N.J. Beard¹, C. Russell⁴, R. DeHayr², S.E. Bunn¹, and P.M. Davies⁴. ¹Centre for Riverine Landscapes, Griffith University, Nathan, Queensland, 4111, Australia, ²Water Studies Centre, School of Chemistry, Monash University & CRC for Freshwater Ecology, Wellington Rd, Clayton, Victoria, 3800, Australia , ³Natural Resources and Mines, Resources Sciences Centre, 80 Meiers Road, Indooroopilly, Queensland, 4068, Australia, ⁴Centre of Excellence Natural Resource Management, University of Western Australia, 444 Albany Highway, Albany, Western Australia, 6330, Australia

2:00 (280) Impacts of wildfire on stream nutrient dynamics and metabolism in boreal forest watersheds of interior Alaska .
E.F. Betts and J.B. Jones Jr. Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, Alaska 99775, USA

2:15 (281) Flow conditions and substrate geometry strongly influence benthic denitrification .
S. Arnon, A.I. Packman, and K.A. Gray. Department of Civil and Environmental Engineering, Northwestern University, IL, USA

2:30 (282) Effects of herbaceous plants on the hyporheic zone of a desert stream.
J.B. Heffernan, R.A. Sponseller, and S.G. Fisher. School of Life Sciences, Arizona State University, Tempe, AZ 85281

2:45 (283) Spatial and temporal variation in nitrogen processing in the Wisconsin River.
K.I. Predick, K.L. Rogers, and E.H. Stanley. Center for Limnology, 680 N. Park St., University of Wisconsin-Madison, Madison, Wisconsin 53706

3:00 (284) Relationships between water chemistry, habitat quality, and biological integrity in wadeable Illinois streams.
T. Heatherly¹, M.R. Whiles¹, M.B. David², T.V. Royer³, C. Mitchell², and L.E. Gentry². ¹Department of Zoology, Southern Illinois University, Carbondale, Illinois, USA, 62901, ²Department of Natural Resources, University of Illinois, Urbana, Illinois, USA, 61801, ³School of Public and Environmental Affairs, Indiana University, Bloomington, Indiana, USA, 47405