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RAPELD: a modification of the Gentry method for biodiversity surveys in long-term ecological research sites

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William E. Magnusson et al.

Our objectives were to develop a method that would be appropriate for long-term ecological studies, but that would permit rapid surveys to evaluate biotic complementarity and land-use planning in Amazonia. The Amazon basin covers about 7 million km2. Therefore, even a sparse coverage, with one sample site per 10.000 km2, would require about 700 sam ...

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DOI: 10.1590/S1676-06032005000300002

Last Update: 2005

Observation design Data collection Community composition Species populations Terrestrial

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Our objectives were to develop a method that would be appropriate for long-term ecological studies, but that would permit rapid surveys to evaluate biotic complementarity and land-use planning in Amazonia. The Amazon basin covers about 7 million km2. Therefore, even a sparse coverage, with one sample site per 10.000 km2, would require about 700 sampling sites. Financial considerations limit the number of sites and investment at each site, but incomplete coverage makes evaluation of biotic complementarity difficult or impossible (Reddy & Dávalos 2003). Our next challenge is to install similar systems throughout Amazonia. The cost, based on modification of Al Gentry's original design is moderate (less than US$ 50.000 per site if it is not necessary to immediately identify all vascular plants in plots) and we can obtain RAP results for most taxa in the short term at much lower cost. However, biological surveys will only be relevant if the local people participate and the surveys serve as much to teach the local communities about the value of their natural resources as they serve to teach the international community about biodiversity. Therefore, we want to see each site run as a long-term ecological research project by local people and institutions. Biological surveys are an important tool in land-use planning, but only the local people can implement those plans.

Contact person: Flávia Costa
Contact e-mail: anfe@inpa.gov.br
Contact institute: INPA/CPEC
License: Free Access
Technical Status: Finish and with constant technical support
URL(s): https://doi.org/10.1590/S1676-06032005000300002

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