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Geophysical approaches to the classification, delineation and monitoring of marine habitats and their communities
Roff, J.C.; Taylor, M.E.; Laughren, J. (2003). Geophysical approaches to the classification, delineation and monitoring of marine habitats and their communities. Aquat. Conserv. 13(1): 77-90
In: Aquatic Conservation: Marine and Freshwater Ecosystems. Wiley: Chichester ;New York, N.Y . ISSN 1052-7613, more
Peer reviewed article  

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  • Roff, J.C., more
  • Taylor, M.E.
  • Laughren, J.

    1. If marine environments are to be systematically protected from the adverse effects of human activities, then identification of the types of marine habitats and the communities they contain, and delineation of their boundaries utilizing a consistent classification is required. Human impacts on defined communities can then be assessed, the health of these communities can be monitored, and marine protected areas can be designated as appropriate.

    2. Schemes to classify habitats at local and regional scales, according to their geophysical properties, may identify different factors as determinants, and/or use them in different sequences in a hierarchical classification. We examined the reasons for these differences in local and regional applications of a global concept, and argue that a common set of factors could be applied in a defined and defensible sequence to produce a common hierarchy of habitat types among geographic regions.

    3. We show how simple mapping and GIS techniques, based on readily available data, can lead to the identification of representative habitat types over broad geographic regions. We applied a geophysical framework first to the entire Canadian coastline and second to the Scotian Shelf of Atlantic Canada to establish broad scale marine natural regions and seascapes, respectively. This ecosystem level approach - which defines representative habitat types - is a fundamental prerequisite for many purposes. It can form the basis for further analyses including: definition of community types from habitat - community relationships; evaluation of the potential roles of focal species in marine conservation; evaluation of candidate marine protected areas; definition of unaffected reference areas against which the effects of human activities can be gauged; guidance for water quality monitoring studies; management of marine resources.

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