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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Importance of local and landscape variables on multiple facets of stream fish biodiversity in a Neotropical agroecosystem

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Autor(es):
Roa-Fuentes, Camilo A. [1, 2] ; Heino, Jani [3] ; Zeni, Jaquelini O. [1, 4] ; Ferraz, Silvio [5] ; Cianciaruso, Marcus V. [6] ; Casatti, Lilian [1]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] UNESP Sao Paulo State Univ, Dept Zool & Bot, 2265 Cristovao Colombo St, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil
[2] UPTC, Univ Pedag & Tecnol Colombia, Escuela Ciencias Biol, Ave Cent Norte 39-115, Tunja, Boyaca - Colombia
[3] Finnish Environm Inst, Freshwater Ctr, Paavo Havaksen Tie 3, Oulu 90570 - Finland
[4] UNESP Sao Paulo State Univ, Dept Ecol, 1515 24A Ave, BR-13506900 Rio Claro, SP - Brazil
[5] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Forest Hydrol Lab LHF, BR-13418900 Piracicaba, SP - Brazil
[6] Univ Fed Goias, Biol Sci Inst, Ecol Dept, CP 131, BR-74001970 Goiania, Go - Brazil
Número total de Afiliações: 6
Tipo de documento: Artigo Científico
Fonte: Hydrobiologia; SEP 2020.
Citações Web of Science: 0
Resumo

Few studies have considered the effects of environmental variables at different spatial scales on Neotropical stream biodiversity. Furthermore, scale-related studies mostly include only one facet of biodiversity. To determine the contribution of local and landscape variables to the variation in the taxonomic, functional and phylogenetic alpha-diversity of stream fish assemblages, we sampled 85 streams in the Upper Parana River basin, Brazil. Local variables explained a substantial fraction of the variance in almost all biodiversity facets. Landscape variables (i.e., land-use and spatial variables) contributed little to the variation in the alpha-component of biodiversity. Our results thus highlight the importance of local features for maintaining stream fish biodiversity in agroecosystems. Probably, land-use were not significant because the study area was in a relatively homogeneous landscape severely impacted by anthropogenic activities. It is possible that insignificant effects of spatial structuring occurred because the ichthyofauna has already gone through a homogenization process and/or due to the spatial scale of our study. We suggest that even though local-scale restoration actions would influence biodiversity, we should not neglect landscape restoration because substantial improvements in the ecological integrity of streams are more likely to be accomplished with large-scale actions (e.g., re-establishment of the native riparian forest). (AU)

Processo FAPESP: 12/05983-0 - Diversidade taxonômica e funcional da ictiofauna de riachos em diferentes agrossistemas no Estado de São Paulo
Beneficiário:Lilian Casatti
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 18/06033-1 - O papel dos fatores atuais e históricos nos padrões de diversidade beta de peixes em riachos de agroecossistemas
Beneficiário:Jaquelini de Oliveira Zeni
Linha de fomento: Bolsas no Brasil - Pós-Doutorado