2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/26/2021 | 8:30 AM - 10:30 AM | ARE ECOLOGICAL CONCEPTS STRONGER THAN HUMAN IMPACT? MULTISCALE, MULTIDATASET EXAMINATION OF CONTROLS ON RIVER METABOLISM | Virtual Platform
ARE ECOLOGICAL CONCEPTS STRONGER THAN HUMAN IMPACT? MULTISCALE, MULTIDATASET EXAMINATION OF CONTROLS ON RIVER METABOLISM
Environmental protection and natural resource management are informed and limited by data availability. Aquatic priority areas do not necessarily match protected terrestrial areas, and river metabolism likely has linear and non-linear controls decoupled from global gradients affecting terrestrial energetics. We expand the geographic extent of metabolism estimates with 92 sites in three corresponding ecoregions across the Western and Central US and Mongolia, and evaluate classical broad-scale ecological concepts including expectations from global gradients, biomes, and the river continuum concept for applicability in the anthropocene. We link metabolism estimates with reach-to-watershed-scale hydrogeomorphology, vegetation, climate, and human impact to evaluate predictors and applicability of traditional ecological frameworks. We expected ecoregion similarities, but found land-use drivers override conceptual expectation. Metabolism estimates did not vary by country or ecoregion alone, or within Mongolia. We evaluated related and collinear metrics explanatory of metabolism: for example, velocity was not a driver, but percent of a reach with cobble-or-larger substrate was. We present most explanatory structures of variables by river type, scale, and location, and conclude that in macrosystem scale studies human interaction and multi-scale assessment are necessary to capture aquatic metabolism variation and make predictions.
- Freshwater continuum
- Ecosystem
- Anthropogenic
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Presenters/Authors
Anne Schechner
(), Kansas State University, anneschechner@ksu.edu;
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Walter Dodds
(), Kansas State University, wkdodds@ksu.edu;
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Alain Maasri
(), The Academy of Natural Sciences of Drexel University, alainmaasri@gmail.com;
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John Costello
(), South Dakota School of Mines and Technology, john.costello@mines.sdsmt.edu;
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Scott Kenner
(), South Dakota School of Mines and Technology, Scott.Kenner@sdsmt.edu;
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Sudeep Chandra
(), University of Nevada Reno, Global Water Center, limnosudeep@me.com;
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Flavia Tromboni
(), University of Nevada, Reno, ftromboni@unr.edu;
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Battsengel Dashdorj
(), South Dakota School of Mines and Technology, battsengel.dashdorj@mines.sdsmt.edu;
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