Ecological uniqueness of fish communities from streams in modified landscapes of Eastern Amazonia
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.ecolind.2019.106039 http://hdl.handle.net/11449/198343 |
Resumo: | Ecological uniqueness is one aspect of beta (β) diversity that shows the relative contribution of sites (local contribution to beta diversity – LCBD) and taxa (species contribution to beta diversity – SCBD) in the formation of a unique environment in terms of species composition, and may be directly related to habitat quality. Our objective was to evaluate the uniqueness of fish communities from streams in modified areas of the Amazon, and to investigate the main environmental predictors at local and landscape scale. We sampled 58 streams in the Capim river basin (Pará, Brazil) located within areas of preserved forest, reduced-impact logging, conventional logging and pasture. We found greater β diversity and higher LCBD in the pasture areas, making this land use the largest contributor to β diversity in the study area. At local scale, this high contribution was primarily influenced by environmental heterogeneity, thalweg depth, percentage of land use and cover (all positively), and volume of large woody debris in the riverbed (negatively). This indicates that the β diversity of fish is highly affected by streams with greater thalweg depth, possibly due to the reduced amount of large woody structures entering streams within pasture areas. These streams also showed greater environmental heterogeneity due to the large variation in disturbance levels of this area, which renders their sites suitable for potential occupation by different species, making them high contributors (high LCBD) and also leading them to present high β diversity. On the other hand, areas with a higher percentage of forest at landscape scale (including preserved forest, reduced-impact logging and conventional logging) were the main contributors, while pasture areas had a higher percentage of exposed soil. We did not find any association between SCBD values and the habit of the species, as the taxa that contributed most to β diversity can be classified as having reduced niches (specialists) as well as broader niches (generalists). We conclude that modified areas may contribute substantially to β diversity because they have a distinct species combination, however different patterns can be observed at local and landscape scales. |
id |
UNSP_508397523f3b0b6dfcda857409124039 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/198343 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Ecological uniqueness of fish communities from streams in modified landscapes of Eastern AmazoniaBeta diversityIchthyofaunaLand useLocal contribution to beta diversity (LCBD)Species contribution to beta diversity (SCBD)Ecological uniqueness is one aspect of beta (β) diversity that shows the relative contribution of sites (local contribution to beta diversity – LCBD) and taxa (species contribution to beta diversity – SCBD) in the formation of a unique environment in terms of species composition, and may be directly related to habitat quality. Our objective was to evaluate the uniqueness of fish communities from streams in modified areas of the Amazon, and to investigate the main environmental predictors at local and landscape scale. We sampled 58 streams in the Capim river basin (Pará, Brazil) located within areas of preserved forest, reduced-impact logging, conventional logging and pasture. We found greater β diversity and higher LCBD in the pasture areas, making this land use the largest contributor to β diversity in the study area. At local scale, this high contribution was primarily influenced by environmental heterogeneity, thalweg depth, percentage of land use and cover (all positively), and volume of large woody debris in the riverbed (negatively). This indicates that the β diversity of fish is highly affected by streams with greater thalweg depth, possibly due to the reduced amount of large woody structures entering streams within pasture areas. These streams also showed greater environmental heterogeneity due to the large variation in disturbance levels of this area, which renders their sites suitable for potential occupation by different species, making them high contributors (high LCBD) and also leading them to present high β diversity. On the other hand, areas with a higher percentage of forest at landscape scale (including preserved forest, reduced-impact logging and conventional logging) were the main contributors, while pasture areas had a higher percentage of exposed soil. We did not find any association between SCBD values and the habit of the species, as the taxa that contributed most to β diversity can be classified as having reduced niches (specialists) as well as broader niches (generalists). We conclude that modified areas may contribute substantially to β diversity because they have a distinct species combination, however different patterns can be observed at local and landscape scales.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Federal do ParáUniversidade Estadual PaulistaInstituto Federal do Piauí, Rodovia PI 247, KM 7, Portal dos CerradosDepartamento de Ecologia Instituto de Biociências Universidade Estadual Paulista (UNESP), Avenida 24A, 1515, Jardim Vila BelaPrograma de Pós-Graduação em Ecologia Aquática e Pesca Universidade Federal do Pará, Rua Augusto Corrêa, 01, GuamáLaboratório de Ecologia e Conservação Instituto de Ciências Biológicas Universidade Federal do Pará, Rua Augusto Corrêa, 01, GuamáDepartamento de Ecologia Instituto de Biociências Universidade Estadual Paulista (UNESP), Avenida 24A, 1515, Jardim Vila BelaInstituto Federal do PiauíUniversidade Estadual Paulista (Unesp)Universidade Federal do Pará (UFPA)Leão, HíngaraSiqueira, Tadeu [UNESP]Torres, Naiara RaiolMontag, Luciano Fogaça de Assis2020-12-12T01:10:10Z2020-12-12T01:10:10Z2020-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.ecolind.2019.106039Ecological Indicators, v. 111.1470-160Xhttp://hdl.handle.net/11449/19834310.1016/j.ecolind.2019.1060392-s2.0-85077252698Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEcological Indicatorsinfo:eu-repo/semantics/openAccess2021-10-23T10:11:17Zoai:repositorio.unesp.br:11449/198343Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T10:11:17Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Ecological uniqueness of fish communities from streams in modified landscapes of Eastern Amazonia |
title |
Ecological uniqueness of fish communities from streams in modified landscapes of Eastern Amazonia |
spellingShingle |
Ecological uniqueness of fish communities from streams in modified landscapes of Eastern Amazonia Leão, Híngara Beta diversity Ichthyofauna Land use Local contribution to beta diversity (LCBD) Species contribution to beta diversity (SCBD) |
title_short |
Ecological uniqueness of fish communities from streams in modified landscapes of Eastern Amazonia |
title_full |
Ecological uniqueness of fish communities from streams in modified landscapes of Eastern Amazonia |
title_fullStr |
Ecological uniqueness of fish communities from streams in modified landscapes of Eastern Amazonia |
title_full_unstemmed |
Ecological uniqueness of fish communities from streams in modified landscapes of Eastern Amazonia |
title_sort |
Ecological uniqueness of fish communities from streams in modified landscapes of Eastern Amazonia |
author |
Leão, Híngara |
author_facet |
Leão, Híngara Siqueira, Tadeu [UNESP] Torres, Naiara Raiol Montag, Luciano Fogaça de Assis |
author_role |
author |
author2 |
Siqueira, Tadeu [UNESP] Torres, Naiara Raiol Montag, Luciano Fogaça de Assis |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Instituto Federal do Piauí Universidade Estadual Paulista (Unesp) Universidade Federal do Pará (UFPA) |
dc.contributor.author.fl_str_mv |
Leão, Híngara Siqueira, Tadeu [UNESP] Torres, Naiara Raiol Montag, Luciano Fogaça de Assis |
dc.subject.por.fl_str_mv |
Beta diversity Ichthyofauna Land use Local contribution to beta diversity (LCBD) Species contribution to beta diversity (SCBD) |
topic |
Beta diversity Ichthyofauna Land use Local contribution to beta diversity (LCBD) Species contribution to beta diversity (SCBD) |
description |
Ecological uniqueness is one aspect of beta (β) diversity that shows the relative contribution of sites (local contribution to beta diversity – LCBD) and taxa (species contribution to beta diversity – SCBD) in the formation of a unique environment in terms of species composition, and may be directly related to habitat quality. Our objective was to evaluate the uniqueness of fish communities from streams in modified areas of the Amazon, and to investigate the main environmental predictors at local and landscape scale. We sampled 58 streams in the Capim river basin (Pará, Brazil) located within areas of preserved forest, reduced-impact logging, conventional logging and pasture. We found greater β diversity and higher LCBD in the pasture areas, making this land use the largest contributor to β diversity in the study area. At local scale, this high contribution was primarily influenced by environmental heterogeneity, thalweg depth, percentage of land use and cover (all positively), and volume of large woody debris in the riverbed (negatively). This indicates that the β diversity of fish is highly affected by streams with greater thalweg depth, possibly due to the reduced amount of large woody structures entering streams within pasture areas. These streams also showed greater environmental heterogeneity due to the large variation in disturbance levels of this area, which renders their sites suitable for potential occupation by different species, making them high contributors (high LCBD) and also leading them to present high β diversity. On the other hand, areas with a higher percentage of forest at landscape scale (including preserved forest, reduced-impact logging and conventional logging) were the main contributors, while pasture areas had a higher percentage of exposed soil. We did not find any association between SCBD values and the habit of the species, as the taxa that contributed most to β diversity can be classified as having reduced niches (specialists) as well as broader niches (generalists). We conclude that modified areas may contribute substantially to β diversity because they have a distinct species combination, however different patterns can be observed at local and landscape scales. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T01:10:10Z 2020-12-12T01:10:10Z 2020-04-01 |
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.ecolind.2019.106039 Ecological Indicators, v. 111. 1470-160X http://hdl.handle.net/11449/198343 10.1016/j.ecolind.2019.106039 2-s2.0-85077252698 |
url |
http://dx.doi.org/10.1016/j.ecolind.2019.106039 http://hdl.handle.net/11449/198343 |
identifier_str_mv |
Ecological Indicators, v. 111. 1470-160X 10.1016/j.ecolind.2019.106039 2-s2.0-85077252698 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ecological Indicators |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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_ |
1799965175002955776 |