Floodplain lake fish assemblages in the Amazon River: directions in conservation biology |
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Authors: | C Granado-Lorencio J Lobón Cerviá C R M Araujo Lima |
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Institution: | 1.Departamento de Biología Vegetal y Ecología, Facultad de Biología,Universidad de Sevilla,Sevilla,Spain;2.Museo Nacional de Ciencias Naturales,Madrid,Spain;3.Instituto Nacional de Pesquisas da Amaz?nia-INPA,Manaus,Brasil |
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Abstract: | The Neotropical region is renowned for its high biodiversity, and the Amazon River basin contains the highest number of fish
species of any river system in the world. In recent years, habitat fragmentation and exploitation of biotic resources have
threatened biological integrity and provoked to need for sustainable management and conservation of the Amazon River system.
We studied 36 floodplain lakes along 2000 km of the Amazon River. The fish assemblages associated with flood forests are moderately
diverse, with low species dominance and reduced populations. To detect nestedness of fish assemblage composition in floodplain
lakes, a nested subset analysis was performed on species presence–absence. The incidence matrix (species × lakes) was maximally
packed using the Nestedness Temperature Calculator software. The results of ranking lakes and species allow us to establish
targets for conservation. Such strategy for sustainable management should be focused on maintaining the Amazonian biodiversity. |
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Keywords: | Amazon river Assemblages Conservation Fish Floodplain lakes Nestedness |
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