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Catchment-Scale Habitat Modeling: Rationale, Objectives and Methods

Author(s): N. Lamouroux; H. Pella; C. Miguel; M. Morel; N. Flipo

Linked Author(s): Miguel Angel Carlos Quinteros

Keywords: No Keywords

Abstract: Few studies of ecological flows at the catchment scale involve hydraulic habitat descriptions, due to the difficulty to describe river hydraulics and their ecological consequences over large hydrographic networks. However, a number of methods are now developed for describing hydraulic habitats at the catchment scale, contributing to bridge the gap between hydrological and hydraulic approaches of ecological flows. To illustrate their potential, we describe a cost-efficient application of statistical hydraulic habitat models in a large catchment (Seine, France), dealing with the ecological impacts of groundwater abstraction. We illustrate how uncertainty issues can be taken into account in catchment-scale applications. We discuss the importance of improved models of the"hydraulic geometry"of stream reaches for these habitat applications as well as others (e. g. modeling nutrient fluxes or water temperature).

DOI:

Year: 2018

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