EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021

(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)

<< BACK TO AGENDA

5/26/2021  |   8:30 AM - 10:30 AM   |  Global prevalence of non-perennial rivers and streams   |  Virtual Platform

Global prevalence of non-perennial rivers and streams

Flowing waters play a unique role in supporting global biodiversity, biogeochemical cycles, and human societies. While the importance of permanent watercourses is well recognized, the prevalence, value and fate of non-perennial rivers and streams that periodically cease to flow tend to be overlooked, if not ignored. This oversight contributes to the degradation of the main source of water and livelihood for millions of people. Here we show that water ceases to flow for at least one day per year along the majority of the world’s rivers by length. Leveraging global information on the hydrology, climate, geology, and surrounding land cover of the Earth’s river network, we predict that non-perennial rivers occur within all climates and biomes, and on every continent. Our findings question the assumptions underpinning foundational river concepts across scientific disciplines. To understand and adequately manage the world’s flowing waters, their biodiversity and functional integrity, a paradigm shift is needed towards a new conceptual model of rivers that includes flow intermittence. By mapping the distribution of non-perennial rivers and streams, we provide a stepping-stone towards addressing this grand challenge in freshwater science.

  • Non-perennial rivers
  • Flow regime
  • GIS upscaling

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

Mathis L. Messager (), Department of Geography, McGill University, Canada | RiverLy Research Unit, INRAE, France, mathis.messager@mail.mcgill.ca;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Bernhard Lehner (), McGill University, Montreal, bernhard.lehner@mcgill.ca;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Charlotte Cockburn (), Dartmouth College, Charlotte.Cockburn.GR@dartmouth.edu;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Nicolas Lamouroux (), RiverLY Research Unit, National Institute for Agricultural and Environmental Research (INRAE), nicolas.lamouroux@inrae.fr;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Hervé Pella (), RiverLY Research Unit, National Institute for Agricultural and Environmental Research (INRAE), herve.pella@inrae.fr;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Ton Snelder (), LWP limited, ton@landwaterpeople.co.nz;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Klement Tockner (), Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany & Institute of Biology, Freie Universität Berlin, Berlin, Germany & Austrian Science Fund (FWF), Vienna, Austria, klement.tockner@fwf.ac.at;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Tim Trautmann (), Institute of Physical Geography, Goethe University Frankfurt, Frankfurt am Main, Germany, t.trautmann@em.uni-frankfurt.de;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Caitlin Watt (), Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, caitlinwatt1@gmail.com;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Thibault Datry (), INRAE, France, Thibault.datry@inrae.fr;


ASHA DISCLOSURE:

Financial -

Nonfinancial -