Canopy cover as the key factor for occurrence and species richness of subtropical stream green algae (Chlorophyta)
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.aquabot.2016.11.004 http://hdl.handle.net/11449/178517 |
Resumo: | Understanding 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. |
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Canopy cover as the key factor for occurrence and species richness of subtropical stream green algae (Chlorophyta)Benthic macroalgaeBrazilian streamsPhyto-ecological regionShadingUnderstanding 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.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Federal University of Latin American Integration (UNILA) Latin American Institute of Life and Nature SciencesSão Paulo State University (UNESP) Laboratory of Aquatic BiologySão Paulo State University (UNESP) Laboratory of Aquatic BiologyCNPq: 141754/2007-9FAPESP: 2007/52608-1Latin American Institute of Life and Nature SciencesUniversidade Estadual Paulista (Unesp)Peres, Cleto KaveskiTonetto, Aurélio Fajar [UNESP]Garey, Michel VarajãoBranco, Ciro Cesar Zanini [UNESP]2018-12-11T17:30:43Z2018-12-11T17:30:43Z2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article24-29application/pdfhttp://dx.doi.org/10.1016/j.aquabot.2016.11.004Aquatic Botany, v. 137, p. 24-29.0304-3770http://hdl.handle.net/11449/17851710.1016/j.aquabot.2016.11.0042-s2.0-850068042002-s2.0-85006804200.pdf51779433992515080000-0002-4099-8755Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAquatic Botany0,766info:eu-repo/semantics/openAccess2024-06-13T17:38:01Zoai:repositorio.unesp.br:11449/178517Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:16:38.134274Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Canopy cover as the key factor for occurrence and species richness of subtropical stream green algae (Chlorophyta) |
title |
Canopy cover as the key factor for occurrence and species richness of subtropical stream green algae (Chlorophyta) |
spellingShingle |
Canopy cover as the key factor for occurrence and species richness of subtropical stream green algae (Chlorophyta) Peres, Cleto Kaveski Benthic macroalgae Brazilian streams Phyto-ecological region Shading |
title_short |
Canopy cover as the key factor for occurrence and species richness of subtropical stream green algae (Chlorophyta) |
title_full |
Canopy cover as the key factor for occurrence and species richness of subtropical stream green algae (Chlorophyta) |
title_fullStr |
Canopy cover as the key factor for occurrence and species richness of subtropical stream green algae (Chlorophyta) |
title_full_unstemmed |
Canopy cover as the key factor for occurrence and species richness of subtropical stream green algae (Chlorophyta) |
title_sort |
Canopy cover as the key factor for occurrence and species richness of subtropical stream green algae (Chlorophyta) |
author |
Peres, Cleto Kaveski |
author_facet |
Peres, Cleto Kaveski Tonetto, Aurélio Fajar [UNESP] Garey, Michel Varajão Branco, Ciro Cesar Zanini [UNESP] |
author_role |
author |
author2 |
Tonetto, Aurélio Fajar [UNESP] Garey, Michel Varajão Branco, Ciro Cesar Zanini [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Latin American Institute of Life and Nature Sciences Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Peres, Cleto Kaveski Tonetto, Aurélio Fajar [UNESP] Garey, Michel Varajão Branco, Ciro Cesar Zanini [UNESP] |
dc.subject.por.fl_str_mv |
Benthic macroalgae Brazilian streams Phyto-ecological region Shading |
topic |
Benthic macroalgae Brazilian streams Phyto-ecological region Shading |
description |
Understanding 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. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-01-01 2018-12-11T17:30:43Z 2018-12-11T17:30:43Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.aquabot.2016.11.004 Aquatic Botany, v. 137, p. 24-29. 0304-3770 http://hdl.handle.net/11449/178517 10.1016/j.aquabot.2016.11.004 2-s2.0-85006804200 2-s2.0-85006804200.pdf 5177943399251508 0000-0002-4099-8755 |
url |
http://dx.doi.org/10.1016/j.aquabot.2016.11.004 http://hdl.handle.net/11449/178517 |
identifier_str_mv |
Aquatic Botany, v. 137, p. 24-29. 0304-3770 10.1016/j.aquabot.2016.11.004 2-s2.0-85006804200 2-s2.0-85006804200.pdf 5177943399251508 0000-0002-4099-8755 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Aquatic Botany 0,766 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
24-29 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128339215384576 |