Thursday, May 29, 2008: 10:45 AM-12:00 PM
Salt Palace Convention Center - Room 355 C
Special Session - Patterns in Stream Ecosystem Functioning Across Bioclimatic Regions I
The International Profiles Committee is organizing a special session on susceptibility of stream ecosystem response variables to climate change. Accumulating evidence of climate change highlights the need to understand the implications for the structure and function of stream ecosystems. Evaluation of how climate-related factors influence ecosystem functional responses can provide an insight to this issue. One approach is to contrast functional responses, or examine the existence of consistent patterns across bioclimatic regions. In addition, we need to understand the susceptibility of different functional responses (e.g. metabolism, organic matter processing, nutrient retention, food webs) to climate change. Although the session emphasizes studies addressing variation across bioclimatic regions, it also welcomes studies on the variation across microclimate conditions within a given region. This session should bring together researchers studying different aspects of stream ecosystem functioning and set up a platform for discussion of existing knowledge, current gaps and future needs of studies across bioclimatic regions. As such, we acknowledge that the session should benefit considerably from the broad international representation of participants at NABS meetings, whose contribution will certainly expand the range of bioclimatic regions considered.
Organizers:Eugènia Martí
Isabel Pardo
10:45 AM551Toward a framework for predicting ecological responses to climate change within and across bioclimatic regions
N. LeRoy Poff
11:00 AM552Whole stream metabolism and nutrient cycling: Field manipulations in lowland and upland scotland (UK)
Benoit O.L. Demars, Nikolai Friberg
11:15 AM553Stream variability in retention of multiple nutrients and metabolism along an altitudinal gradient
Eugènia Martí, Paula Fonollà, Francesc Sabater, Daniel von Schiller, Alba Argerich, Miquel Ribot, Joan L. Riera
11:30 AM554Influence of flow and temperature on the temporal variability in leaf processing rates in atlantic headwater streams
Isabel Pardo, Liliana Garcia, Maruxa Alvarez
11:45 AM555Shift of litter dynamics and decomposition in temperate lowland stream in response to drought
Michael Mutz, Jeanette Schlief
Sponsor:Special Sessions

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