How modified landscapes filter rare species and modulate the regional pool of ecological traits?
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NEOTROPICAL STREAMS IN CHANGING LANDSCAPES
How modified landscapes filter rare species and modulate the regional pool of ecological traits? Naraiana Loureiro Benone . Bruno Eleres Soares . Cleonice Maria Cardoso Lobato . Lidia Brasil Seabra . David Bauman . Luciano Fogac¸a de Assis Montag
Received: 15 February 2020 / Revised: 28 August 2020 / Accepted: 5 September 2020 Ó Springer Nature Switzerland AG 2020
Abstract Common and rare species differ in their level of dispersal ability and habitat specialization, and thus should respond to distinct assembly rules. Rare species are much more spatially restricted and usually show higher habitat specialization, so they can be much more vulnerable to landscape changes than common species. We simulated three species-loss scenarios to assess how different groups of stream fish species respond to environmental and spatial variables and how potential extinctions affected regional Naraiana Loureiro Benone and Bruno Eleres Soares are sharing co-first authorship. Guest editors: David J. Hoeinghaus, Jaquelini O. Zeni, Gabriel L. Breja˜o, Rafael P. Leita˜o & Renata G. Frederico / Neotropical Stream Fish Ecology in a Changing Landscape
Electronic supplementary material The online version of this article (doi:https://doi.org/10.1007/s10750-020-04405-9) contains supplementary material, which is available to authorized users. N. L. Benone (&) C. M. C. Lobato L. B. Seabra L. F. de Assis Montag Laborato´rio de Ecologia e Conservac¸a˜o, Instituto de Cieˆncias Biolo´gicas, Universidade Federal do Para´ – UFPA, Bele´m, PA, Brazil e-mail: [email protected] N. L. Benone Universidade do Estado de Minas Gerais – UEMG, Unidade Passos, Passos, MG, Brazil
functional richness and the average functional distinctiveness. Rare and common species contribute similarly to the global functional richness, but the loss of common species led to a marked decrease in local redundancy. Whilst intermediate and rare species are regulated by dispersal, dominant species respond to niche processes and are more affected by land-use changes. Therefore, common and rare species are under distinct assembly rules and may exhibit distinct responses in the face of environmental anthropization. Addressing rare species is often overlooked, despite constant claims regarding their importance and their frequently concerning conservation status. Accounting for their rarity can offer a more refined look at the responses of species to human modifications, providing valuable information on how to tackle biodiversity loss. Keywords Species loss Land-use changes Dispersal ability Environmental filtering Extinction B. E. Soares Laborato´rio de Limnologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro – UFRJ, Rio de Janeiro, RJ, Brazil D. Bauman Oxford University Centre for the Environment, Oxford, UK
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Hydrobiologia
Introduction Land-use changes promote high rates of deforestation (Stabile et al., 2020), affecting terrestrial and aquatic ecosystems b
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