2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/21/2018 | 2:45 PM - 3:00 PM | RIVER NETWORK SATURATION HYPOTHESIS: FACTORS INFLUENCING BIOGEOCHEMICAL DEMAND OF ENTIRE RIVER NETWORKS RELATIVE TO SUPPLY | 330 B
RIVER NETWORK SATURATION HYPOTHESIS: FACTORS INFLUENCING BIOGEOCHEMICAL DEMAND OF ENTIRE RIVER NETWORKS RELATIVE TO SUPPLY
River networks are important controllers of material transfer from land to ocean. Understanding the factors regulating this function for different gaseous, dissolved, and particulate constituents is critical to assess the local and global effects of climate and land use change. We propose the River Network Saturation hypothesis to generalize how river network regulation of material fluxes changes with flow conditions due to imbalances between supply and demand at network scales. In contrast to terrestrial ecosystems, saturation of river networks is highly variable in time due to the considerable variation in the supply of constituents associated with changes in flow. All river networks become saturated under high flow conditions, but flow thresholds under which saturation occurs depends on the inherent process rates for a given constituent, the presence of saturating kinetics, and the abundance of lentic waters within the river network. As supply increases, saturation at network scales is initially limited by previously unmet demand in downstream aquatic ecosystems. Better understanding of when river networks saturate for different constituents will allow quantification of aquatic function at broader spatial scales and help identify management priorities.
- Climate Change
- Connectivity
- Nutrients
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Presenters/Authors
Wilfred Wollheim
(), University of New Hampshire, wil.wollheim@unh.edu;
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Susana Bernal
(), Center for Advanced Studies of Blanes (CEAB-CSIC), Spain, sbernal@ceab.csic.es;
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Doug Burns
(), USGS, daburns@usgs.gov;
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Jonathon Czuba
(), University of Minnesota, czuba004@umn.edu;
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Charles Driscoll
(), Syracuse University, ctdrisco@syr.edu ;
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Amy Hansen
(), University of Kansas, amy.hansen@ku.edu;
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Robert Hensley
(), University of Florida, bhensley@ufl.edu;
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Jacob Hosen
(), Purdue University, jhosen@purdue.edu;
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Sujay Kaushal
(), University of Maryland, skaushal@umd.edu;
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Lauren Koenig
(), University of Connecticut, Lauren.Koenig@uconn.edu;
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Y. Lu
(), University of Alabama, yuehan.lu@ua.edu;
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Alessandra Marzadri
(), Center for Ecohydraulics Research, University of Idaho , marzadri@ing.unitn.it;
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Peter Raymond
(), Yale University, peter.raymond@yale.edu;
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Durelle Scott
(), Virginia Tech, dscott@vt.edu;
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Robert Stewart
(), University of New Hampshire, rob.stewart@unh.edu;
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Philippe Vidon
(), The State University of New York College of Environmental Science and Forestry, pgvidon@esf.edu;
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Ellen Wohl
(), Colorado State University, Ellen.Wohl@colostate.edu ;
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