Geosalar: Innovative Remote Sensing Methods for Spatially Continuous Mapping of Fluvial Habitat at Riverscape Scale - Fluvial Remote Sensing for Science and Management - page 207

ecologists as the necessary next step in the analysis
of fish/habitat relationships, its application remained
difficult due to the lack of appropriate technology to
characterise fluvial habitats at the appropriate scale and
resolution. One of the main contributions of the Geosalar
project was to participate in the development of new
remote sensing methods that are nowmaking the concept
of riverscape 'real' (Carbonneau et al., 2012). Image
analysis methods are indeed now available to produce
spatially continuous high-resolution maps of important
fluvial habitat variables, such as bed material size and
water depth. These methods are currently applied on
hyperspatial images but the constant improvement of
the resolution of satellite sensors suggest that they may
soon be applied to satellite imagery. Now that significant
improvements were made to the quantification of fluvial
environments over long river segments, it appears that
the new necessary next step is to provide equally detailed
biological data describing the exploitation by fish of the
mosaic of habitats comprised within the riverscape.

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Acknowledgements

The authors wish to thank the researchers who par-
ticipated in all components of the Geosalar project.
A special thank to Julian Dodson, PI of the project.
The project was funded by the GEOIDE Network Cen-
tres of Excellence Program(http://www.geoide.ulaval.ca/)
with contributions from our partners : Hydro-Quebec,
Genivar,Ministere des Resources Naturelles et de la Faune
duQuebec, Aquasalmo inc., ZECSainte-Marguerite, Fon-
dation pour le Saumon du Grand Gaspe. Special thanks
also to Keith Thompson and Nicholas Chrisman who
were, in turn, directors of GEOIDE. The comments and
suggestions of Steve Rice and Herve Piegay on an earlier
version of this chapter are gratefully acknowledged.

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