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The role of environmental filtering, geographic distance and dispersal barriers in shaping the turnover of plant and animal species in Amazonia

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DOI

  • Cristian Dambros, Universidade Federal de Santa Maria
  • ,
  • Gabriela Zuquim
  • Gabriel M. Moulatlet, Amazon Regional University
  • ,
  • Flávia R.C. Costa, National Institute of Amazonian Research
  • ,
  • Hanna Tuomisto, University of Turku
  • ,
  • Camila C. Ribas, National Institute of Amazonian Research
  • ,
  • Renato Azevedo, National Institute of Amazonian Research
  • ,
  • Fabricio Baccaro, Universidade Federal do Amazonas
  • ,
  • Paulo E.D. Bobrowiec, National Institute of Amazonian Research
  • ,
  • Murilo S. Dias, Universidade de Brasilia
  • ,
  • Thaise Emilio, Universidade Estadual de Campinas
  • ,
  • Helder M.V. Espirito-Santo, Universidade Federal do Para, Universidade Federal do Rio Grande do Norte
  • ,
  • Fernando O.G. Figueiredo
  • Elizabeth Franklin, National Institute of Amazonian Research
  • ,
  • Cintia Freitas, Universidade Federal do Parana
  • ,
  • Márlon B. Graça, National Institute of Amazonian Research, Federal Institute of Education
  • ,
  • Fernando d’Horta, National Institute of Amazonian Research
  • ,
  • Rafael P. Leitão, Universidade Federal de Minas Gerais
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  • Marina Maximiano, National Institute of Amazonian Research
  • ,
  • Fernando P. Mendonça, Federal Institute of Education
  • ,
  • Juliana Menger, National Institute of Amazonian Research
  • ,
  • José W. Morais, National Institute of Amazonian Research
  • ,
  • Affonso H.N. de Souza, National Institute of Amazonian Research
  • ,
  • Jorge L.P. Souza, National Institute of Atlantic Forest
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  • Valéria da C. Tavares, Universidade Federal da Paraiba, Universidade Federal de Minas Gerais
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  • Julio D. do Vale, Pontificia Universidade Catolica do Parana
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  • Eduardo M. Venticinque, Universidade Federal do Rio Grande do Norte
  • ,
  • Jansen Zuanon, National Institute of Amazonian Research
  • ,
  • William E. Magnusson, National Institute of Amazonian Research

To determine the effect of rivers, environmental conditions, and isolation by distance on the distribution of species in Amazonia. Location: Brazilian Amazonia. Time period: Current. Major taxa studied: Birds, fishes, bats, ants, termites, butterflies, ferns + lycophytes, gingers and palms. We compiled a unique dataset of biotic and abiotic information from 822 plots spread over the Brazilian Amazon. We evaluated the effects of environment, geographic distance and dispersal barriers (rivers) on assemblage composition of animal and plant taxa using multivariate techniques and distance- and raw-data-based regression approaches. Environmental variables (soil/water), geographic distance, and rivers were associated with the distribution of most taxa. The wide and relatively old Amazon River tended to determine differences in community composition for most biological groups. Despite this association, environment and geographic distance were generally more important than rivers in explaining the changes in species composition. The results from multi-taxa comparisons suggest that variation in community composition in Amazonia reflects both dispersal limitation (isolation by distance or by large rivers) and the adaptation of species to local environmental conditions. Larger and older river barriers influenced the distribution of species. However, in general this effect is weaker than the effects of environmental gradients or geographical distance at broad scales in Amazonia, but the relative importance of each of these processes varies among biological groups.

Original languageEnglish
JournalBiodiversity and Conservation
Volume29
Issue13
Pages (from-to)3609-3634
Number of pages26
ISSN0960-3115
DOIs
Publication statusPublished - Nov 2020

    Research areas

  • Ants, Bats, Birds, Butterflies, Community composition, Endemism areas, Environmental filtering, Ferns, Fish, Gingers, Palms, Species distribution, Termites, Tropical forest

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ID: 199445117