Thursday, May 21, 2009: 8:00 AM-10:00 AM
Ambassador West
Special Session - Advances in Stream Biogeochemistry: The Legacy and Promise of 30 Years of the Nutrient Spiralling Concept I
In 1979, Webster and Patten introduced a new way to approach nutrient cycling in stream ecosystems, called “the Nutrient Spiralling Concept.” Over the ensuing 30 years, this concept and associated mathematical and methodological advances have significantly advanced our understanding of how streams retain, transform, and transport organic and inorganic solutes, including nutrients. On the 30th anniversary of the nutrient spiralling concept, this session represents a tribute as well as an evaluation of the concept. Invited presenters will review its scientific contributions to the field of stream biogeochemistry as well as discuss existing gaps and future prospects. The session also welcomes contributions (both oral and poster) based on extensive reviews or meta-analyses of existing data (nutrients, dissolved and particulate organic matter), methods, and mathematical approaches, and new perspectives (data, methods, models, scales) in stream biogeochemistry that contrast with or build upon the nutrient spiralling concept.
Moderators:Eugčnia Martí
Nancy B. Grimm
8:00 AM502Why spiralling matters?
Jackson R. Webster
8:15 AM503Nutrient spiraling in streams: From concept to measurement and from comparisons to process understanding
Patrick J. Mulholland, Eugčnia Martí
8:30 AM504Searching for the stream's biogeochemical "heartbeat": Patterns of temporal variation in nutrient spiralling
Daniel von Schiller, Eugčnia Martí, Alba Argerich, Joan L. Riera, Francesc Sabater
8:45 AM505How does the study of agricultural streams enrich our understanding of nutrient spiraling?
Jennifer L. Tank, Robert O. Hall Jr., Stephen K. Hamilton, Patrick J. Mulholland, Bruce J. Peterson, Linda R. Ashkenas, Clifford N. Dahm, Walter K. Dodds, Stuart Findlay, Stanley V. Gregory, Nancy B. Grimm, Sherri L. Johnson, William H. McDowell, Judy L. Meyer, Geoffrey C. Poole, H. Maurice Valett, Jackson R. Webster, Clay P. Arango, Jake J. Beaulieu, Melody J. Bernot, Amy J. Burgin, Chelsea Crenshaw, Ashley M. Helton, Laura T. Johnson, Bobbie R. Niederlehner, Jonathan M. O'Brien, Jody D. Potter, Richard W. Sheibley, Daniel J. Sobota, Suzanne M. Thomas
9:00 AM506Nutrient spiralling in a human-dominated arid land river
Clifford N. Dahm, David Van Horn, Maceo Carrillo Martinet
9:15 AM507Increased spiraling lengths in urban headwater streams - potential buffering mechanisms by river networks
Wilfred M. Wollheim, Bruce J. Peterson, Gretchen M. Gettel, Charles S. Hopkinson, Tamara K. Harms
Sponsor:Special Sessions

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See more of The NABS 57th Annual Meeting (16-23 May, 2009)