2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/26/2021 | 8:30 AM - 10:30 AM | MetaDryNet - Understanding network-scale responses of biodiversity and ecosystem functioning to drying | Virtual Platform
MetaDryNet - Understanding network-scale responses of biodiversity and ecosystem functioning to drying
River networks can be conceptualized as meta-ecosystems, i.e. a set of sub-ecosystems in which organisms and resources (e.g. carbon) are exchanged laterally (riparian-aquatic linkage) and horizontally from up- to downstream. Drying fragments river ecosystems, altering exchanges between sub-ecosystems but also creating mismatches between resource availability and organism activity. Such mismatches can alter functioning locally and scale up to modify energy and matter fluxes at the meta-ecosystem scale. To determine how drying structures organic matter (OM) quantity and quality, consumer communities and their activity (decomposition, respiration) we will monitor 20 river sites (including the riverbed and the riparian zone) within an intermittent river network. By comparing OM stocks and quality, consumer communities and their activity among three hydrological phases and across aquatic-terrestrial boundaries we will identify when and where drying creates mismatches and affects ecosystem functioning. We predict that mismatches will be stronger at sites with low connectivity and high drying frequencies than at well-connected permanent reaches. As climate change is exacerbating river network drying a robust framework to understand the spatiotemporal dynamic of resources and their processing by diverse communities of organisms is crucially needed to inform river management strategies.
- Aquatic–terrestrial biodiversity
- Dry rivers
- Ecosystem functioning
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Romain Sarremejane
(), INRAE, romain.sarremejane@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Gabriel Singer
(), University of Innsbruck, gabriel.singer@uibk.ac.at;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Thibault Datry
(), INRAE, France, Thibault.datry@inrae.fr;
ASHA DISCLOSURE:
Financial -
Nonfinancial -