2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
6/06/2017 | 9:15 AM - 9:30 AM | Self-organization and the functioning of streams and rivers | 306A
Self-organization and the functioning of streams and rivers
The role of self-organization, i.e., the process of individual agents interacting with each other and with local information, has explained regular pattern formation and its ecosystem consequences worldwide. Those patterns occur mostly in otherwise homogeneous terrestrial ecosystems. But does self-organization also influences streams and rivers? In a survey of the nutrient spatial heterogeneity over post-flood succession in a desert stream, we showed that although the environmental template was a dominant driver, the contribution of internal self-organization accounted up to 23% of the effect size of the template for the spatial patterns of the limiting nutrient in the system. In another example, we showed that the spatial distribution of riverine wetlands along the stream channel was simultaneously controlled by physical template and internal feedbacks (self-organization), the relative importance of each varying with hydrological condition of the system. We further develop the concept of self-organization in the context of flowpath, propagation of influence, river continuum and other current concepts, and prescribe a list of questions that can be addressed with this more integrative theoretical framework for freshwater science.
- S29 Macrosystem Ecology of Aquatic Systems
- C10 Biogeochemistry
- C10 Biogeochemistry
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Presenters/Authors
Xiaoli Dong
(), Duke University, xd23@duke.edu;
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Stuart Fisher
(), Arizona State University, s.fisher@asu.edu;
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Jim Heffernan
(), Duke University, james.heffernan@duke.edu;
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