Global patterns and drivers of ecosystem functioning in rivers and riparian zones
Laen...
Kuupäev
2019
Kättesaadavus
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
American Association for the Advancement of Science
Abstrakt
River ecosystems receive and process vast quantities of terrestrial organic carbon, the fate of which depends
strongly on microbial activity. Variation in and controls of processing rates, however, are poorly characterized at
the global scale. In response, we used a peer-sourced research network and a highly standardized carbon processing
assay to conduct a global-scale field experiment in greater than 1000 river and riparian sites. We found that Earth’s
biomes have distinct carbon processing signatures. Slow processing is evident across latitudes, whereas rapid rates
are restricted to lower latitudes. Both the mean rate and variability decline with latitude, suggesting temperature
constraints toward the poles and greater roles for other environmental drivers (e.g., nutrient loading) toward the
equator. These results and data set the stage for unprecedented “next-generation biomonitoring” by establishing
baselines to help quantify environmental impacts to the functioning of ecosystems at a global scale.
This research was supported by awards to S.D.T. from the Ecuadorian Ministry of Science [Secretaría de Educación Superior Ciencia, Tecnología e Innovación (SENESCYT)] through the PROMETEO scholar exchange program, the Oakland University Research Development Grant program, and a Huron Mountain Wildlife Foundation research grant. N.A.G. was supported by the U.S. Department of Energy’s Office of Science, Biological and Environmental Research. Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725. We are grateful for open-access-publishing funds from Kresge Library at Oakland University and Queen’s University Belfast.
This research was supported by awards to S.D.T. from the Ecuadorian Ministry of Science [Secretaría de Educación Superior Ciencia, Tecnología e Innovación (SENESCYT)] through the PROMETEO scholar exchange program, the Oakland University Research Development Grant program, and a Huron Mountain Wildlife Foundation research grant. N.A.G. was supported by the U.S. Department of Energy’s Office of Science, Biological and Environmental Research. Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725. We are grateful for open-access-publishing funds from Kresge Library at Oakland University and Queen’s University Belfast.
Kirjeldus
Märksõnad
rivers, riparian zones, ecosystems, articles