Influence of environmental features at multiple scales and spatial structure on stream fish communities in a tropical agricultural region

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dc.contributor.authorRoa-Fuentes, Camilo A. [UNESP]
dc.contributor.authorCasatti, Lilian [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-11-26T17:28:19Z
dc.date.available2018-11-26T17:28:19Z
dc.date.issued2017-01-01
dc.description.abstractLand cover change for agricultural expansion exerts strong pressures on tropical streams. We examined the relative contributions of catchment land cover, local environmental features, and spatial patterns on stream fish communities (n = 43). Explained variation in fish community structure was partitioned (p-RDA) between the explained fractions as follows: pure local 10%, pure catchment 1%, pure spatial 3%, and shared environmental and spatial 7%. Among the possible reasons for the lack of effect of catchment-scale variables on stream fish structure we can cite (1) weak associations between catchment-scale and local-scale features that are affecting stream fish communities, (2) major influence of past land cover on the present-day fish community structure compared to current land cover, or (3) the small variability in catchment variables (e. g. homogeneous landscape) is not able to overcome the impact of localscale variables. The best practice to improve the ecological integrity of streams would be the restoration at the catchment-scale, which is impossible for agricultural lands. In areas with intense land use for agriculture and pasture, our study indicates that restoration of riparian forests and manipulation of local conditions may be an option to reduce the impacts of anthropogenic activities on the stream fish communities.en
dc.description.affiliationSao Paulo State Univ, Dept Bot & Zool, Sao Jose Do Rio Preto, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Dept Bot & Zool, Sao Jose Do Rio Preto, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2012/05983-0
dc.description.sponsorshipIdCNPq: 190199/2011-3
dc.description.sponsorshipIdCNPq: 301755/2013-2
dc.format.extent273-287
dc.identifierhttp://dx.doi.org/10.1080/02705060.2017.1287129
dc.identifier.citationJournal Of Freshwater Ecology. Philadelphia: Taylor & Francis Inc, v. 32, n. 1, p. 273-287, 2017.
dc.identifier.doi10.1080/02705060.2017.1287129
dc.identifier.fileWOS000399557600008.pdf
dc.identifier.issn0270-5060
dc.identifier.lattes8041011456158217
dc.identifier.urihttp://hdl.handle.net/11449/162723
dc.identifier.wosWOS:000399557600008
dc.language.isoeng
dc.publisherTaylor & Francis Inc
dc.relation.ispartofJournal Of Freshwater Ecology
dc.relation.ispartofsjr0,364
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectHierarchical classification
dc.subjectstream ecology
dc.subjectriparian cover
dc.subjectriparian width
dc.subjectreach-scale variables
dc.subjectNeotropical stream fish
dc.subjectagricultural landscape
dc.titleInfluence of environmental features at multiple scales and spatial structure on stream fish communities in a tropical agricultural regionen
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dcterms.rightsHolderTaylor & Francis Inc
unesp.author.lattes8041011456158217
unesp.author.orcid0000-0002-2966-0905[2]

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Artigos - Zoologia e Botânica - IBILCE