Biological diversity encompasses genes, species, and ecosystems. Some suggest dispensing with the habitat or ecosystem level of biodiversity, for a variety of reasons—which I will explore. They choose species diversity as a surrogate for biodiversity. The focus on species, indeed on only certain groups of species, is ill-advised, and will inevitably result in negative consequences for some taxonomic groups. Making biological diversity synonymous with species diversity trivializes the broader meaning of biodiversity and promotes misconceptions of conservation issues. Thorough sampling, inventory, and monitoring of species, populations, and gene frequencies require far too much time and effort to underpin a practical conservation strategy. Management for biodiversity must concentrate on the ecosystem and landscape levels of organization; in other words, must employ a “coarse-filter” strategy, with tactical application of the “fine filter.”
Pojar, Jim. 1999. Genes, Species, Ecosystems: Is Surrogacy Meaningful? (in Proc. Conference Biology & Management of Species and Habitats at Risk). Ministry of Environment, Lands and Parks. Conference Biology & ManagementProceedings. Vol. 2
Topic: Species and Ecosystems at Risk
Keywords: biological diversity, coarse filter, communities, ecosystems, fine filter, species diversity
Other Identifier: University College of the Cariboo
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