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É. L. Simms
populations displaying an intermediate density (near 50 %) should also be sampled,
because they can be detected using remote sensing data (Lambert, 1992).
It is advantageous to add ancillary data such as water depth above the canopy,
total water depth, and Secchi depth. These are easily collected and assist in the
extraction of reliable information from the remote sensing data. Finally, data on
substrate type and the presence of predators, provide an insight into the stability of the
population being assessed.
Acknowledgments
This project was funded by the Greater Lamaline Area Development Association
(GLADA) and by the Newfoundland and Labrador Department of Fisheries. The image
was analyzed at the Geographical Information and Digital Analysis Laboratory
(GEOIDAL), Department of Geography, Memorial University of Newfoundland.
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