Canopy cover as the key factor for occurrence and species richness of subtropical stream green algae (Chlorophyta)

Página do item simplificado
dc.contributor.authorPeres, Cleto Kaveski
dc.contributor.authorTonetto, Aurélio Fajar [UNESP]
dc.contributor.authorGarey, Michel Varajão
dc.contributor.authorBranco, Ciro Cesar Zanini [UNESP]
dc.contributor.institutionLatin American Institute of Life and Nature Sciences
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:30:43Z
dc.date.available2018-12-11T17:30:43Z
dc.date.issued2017-01-01
dc.description.abstractUnderstanding how local and regional environmental factors influence species richness remains a key issue in ecology. Green algae (Chlorophyta) are a diverse and widely occurring group, which may be a good model for studying the factors that influence species richness at local and regional scales. Here, we tested the influence of local (water quality and structural complexity) and regional environmental factors (phyto-ecological regions) on the occurrence and species richness of macroscopic green algae (MGA) in subtropical streams. We sampled algae in 105 streams located in the four major phyto-ecological regions of the Brazilian subtropics. We used cross-transect technique in streams to sample algae and environmental variables. To determine the most important variables in species occurrence and richness, we used Hierarchical Partitioning analysis (HP). We found that canopy cover alone explained 34% of MGA occurrence, regardless of phyto-ecological region. At the sites where MGA occurred, the species richness was determined by both regional and local factors. The species richness was mainly influenced by phyto-ecological region, which explained 34% of the variation in species richness, along with canopy cover and pH which explaining 22% and 15% respectively. The highest richness was found in non-forested regions, in transects without canopy cover, and slightly acidic pH. Our results illustrate how the combination of regional and local factors can shape the spatial distribution of species richness and are pivotal to understanding richness patterns at broad spatial scales.en
dc.description.affiliationFederal University of Latin American Integration (UNILA) Latin American Institute of Life and Nature Sciences
dc.description.affiliationSão Paulo State University (UNESP) Laboratory of Aquatic Biology
dc.description.affiliationUnespSão Paulo State University (UNESP) Laboratory of Aquatic Biology
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdCNPq: 141754/2007-9
dc.description.sponsorshipIdFAPESP: 2007/52608-1
dc.format.extent24-29
dc.identifierhttp://dx.doi.org/10.1016/j.aquabot.2016.11.004
dc.identifier.citationAquatic Botany, v. 137, p. 24-29.
dc.identifier.doi10.1016/j.aquabot.2016.11.004
dc.identifier.file2-s2.0-85006804200.pdf
dc.identifier.issn0304-3770
dc.identifier.lattes5177943399251508
dc.identifier.orcid0000-0002-4099-8755
dc.identifier.scopus2-s2.0-85006804200
dc.identifier.urihttp://hdl.handle.net/11449/178517
dc.language.isoeng
dc.relation.ispartofAquatic Botany
dc.relation.ispartofsjr0,766
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectBenthic macroalgae
dc.subjectBrazilian streams
dc.subjectPhyto-ecological region
dc.subjectShading
dc.titleCanopy cover as the key factor for occurrence and species richness of subtropical stream green algae (Chlorophyta)en
dc.typeArtigo
unesp.author.lattes5177943399251508[4]
unesp.author.orcid0000-0002-4099-8755[4]

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
2-s2.0-85006804200.pdf
Tamanho:
679.11 KB
Formato:
Adobe Portable Document Format
Descrição:
Baixar

Coleções

Artigos - Ciências Biológicas - FCLAS