Abstract
Low tide SPOT images were selected from two French coast areas characterized by important Fucaceae populations (Pleubian-Bréhat site in Northern Brittany and Ré Island on the Atlantic coast).
A specific data transformation yielding the theoretical algal cover was used. This index takes the radiometric properties of the intertidal zone and of the Fucaceae into account. Satellite data cover was validated by comparing it with selected field samples.
Other field data indicate that a linear relation exists between cover and biomass. This relationship is quite independent of cover patchiness. However, it can vary according to species, season and location. Hence it was possible to estimate Fucus sp and Ascophyllum nodosum harvestable biomass using appropriate segments of the intertidal zone.
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Guillaumont, B., Callens, L. & Dion, P. Spatial distribution and quantification of Fucus species and Ascophyllum nodosum beds in intertidal zones using spot imagery. Hydrobiologia 260, 297–305 (1993). https://doi.org/10.1007/BF00049032
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DOI: https://doi.org/10.1007/BF00049032