Relação atributo funcional-ambiente na assembleia de peixes de um rio intermitente da região Semiárida do Brasil
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) |
Texto Completo: | https://repositorio.ufersa.edu.br/handle/prefix/6863 |
Resumo: | One of the great challenges of Ecology is to understand which processes define the patterns of diversity, especially among local communities. In semi-arid areas with well-marked wet and dry seasons, fish communities experience successive contractions/habitat expansions. These events directly influence the longitudinal continuum of the river, selecting species with characteristics that favor their survival in these conditions. Based on this premise, this study evaluated the potential environmental filtration in the functional structuring of the fish assembly of a river in the semi-arid region of Brazil during 2013, when the drought period was more prolonged. The Apodi/Mossoró River is originally intermittent with a magnitude of inundation defined by the volume of rainfall. Its natural flow was altered by the construction of 618 dams, with a capacity of 4.7 million m³, for irrigation and water supply purposes. Thus, to test the hypothesis “the relationship between functional attributes and environmental conditions is similar in the periods of drought and rain in the fish assembly of the Apodi River”, we evaluated the attribute-environment relationship in the dry and rainy seasons. For this, ecomorphological measures of all species of fish collected were obtained and bibliographic bases were consulted to compose a matrix of functional attributes related to habitat use, locomotion, feeding and reproduction. Subsequently, to test the response of the functional characteristics of the fish assemblage to environmental conditions in the dry and wet seasons, an RLQ ordering analysis was used. To assess the statistical significance of the relationship between functional attributes and environment, permutations were performed with two null models and a fourth-corner analysis that evaluated individual associations between attributes and environment. In total, 21 species of fish were recorded, six environmental variables and 18 functional attributes were evaluated. The fish assemblages presented a random distribution, indicating that there was no dependence on environmental characteristics (model 2, p = 0.31). We did not register a significant relationship between functional attributes and environmental variables (model 4, p = 0.44). However, we identified three significant positive associations (p <0.05) between attributes and environmental variables: the Pectoral fin position (PFps) attribute with channel width, Pectoral fin configuration ratio (FPar) with temperature and Surface ratio fins and body size (Fsf) with depth. No differences were found between the rainy and dry season assemblies, suggesting that rivers in the Brazilian semiarid in the context of low rainfall do not corroborate the premise of the Habitat Template Theory (HTT, TOOWSEND & HILDREW, 1994) |
id |
UFER_c606fbe4aabdf7c24f62ad69d82810ed |
---|---|
oai_identifier_str |
oai:repositorio.ufersa.edu.br:prefix/6863 |
network_acronym_str |
UFER |
network_name_str |
Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) |
repository_id_str |
|
spelling |
Relação atributo funcional-ambiente na assembleia de peixes de um rio intermitente da região Semiárida do BrasilDiversidade funcionalEscala temporalIctiofaunaEcossistema lóticoCaatingaFunctional DiversityTemporal scaleIchthyofaunaLotic ecosystemCaatingaCNPQ::CIENCIAS BIOLOGICAS::ECOLOGIAOne of the great challenges of Ecology is to understand which processes define the patterns of diversity, especially among local communities. In semi-arid areas with well-marked wet and dry seasons, fish communities experience successive contractions/habitat expansions. These events directly influence the longitudinal continuum of the river, selecting species with characteristics that favor their survival in these conditions. Based on this premise, this study evaluated the potential environmental filtration in the functional structuring of the fish assembly of a river in the semi-arid region of Brazil during 2013, when the drought period was more prolonged. The Apodi/Mossoró River is originally intermittent with a magnitude of inundation defined by the volume of rainfall. Its natural flow was altered by the construction of 618 dams, with a capacity of 4.7 million m³, for irrigation and water supply purposes. Thus, to test the hypothesis “the relationship between functional attributes and environmental conditions is similar in the periods of drought and rain in the fish assembly of the Apodi River”, we evaluated the attribute-environment relationship in the dry and rainy seasons. For this, ecomorphological measures of all species of fish collected were obtained and bibliographic bases were consulted to compose a matrix of functional attributes related to habitat use, locomotion, feeding and reproduction. Subsequently, to test the response of the functional characteristics of the fish assemblage to environmental conditions in the dry and wet seasons, an RLQ ordering analysis was used. To assess the statistical significance of the relationship between functional attributes and environment, permutations were performed with two null models and a fourth-corner analysis that evaluated individual associations between attributes and environment. In total, 21 species of fish were recorded, six environmental variables and 18 functional attributes were evaluated. The fish assemblages presented a random distribution, indicating that there was no dependence on environmental characteristics (model 2, p = 0.31). We did not register a significant relationship between functional attributes and environmental variables (model 4, p = 0.44). However, we identified three significant positive associations (p <0.05) between attributes and environmental variables: the Pectoral fin position (PFps) attribute with channel width, Pectoral fin configuration ratio (FPar) with temperature and Surface ratio fins and body size (Fsf) with depth. No differences were found between the rainy and dry season assemblies, suggesting that rivers in the Brazilian semiarid in the context of low rainfall do not corroborate the premise of the Habitat Template Theory (HTT, TOOWSEND & HILDREW, 1994)Um dos grandes desafios da Ecologia é compreender quais processos definem os padrões de diversidade, especialmente entre comunidades locais. Em áreas semiáridas com estações úmida e seca bem marcadas, comunidades de peixes experimentam sucessivas contrações/expansões de habitats. Estes eventos influenciam diretamente o contínuo longitudinal do rio, selecionando espécies com características que favorecem sua sobrevivência nessas condições. A partir dessa premissa, este estudo avaliou a potencial filtragem ambiental na estruturação funcional da assembleia de peixes de um rio da região semiárida do Brasil durante o ano 2013, quando o período de seca foi mais prolongado. O Rio Apodi/Mossoró é, originalmente, intermitente com magnitude de inundação definido pelo volume de chuvas. Seu fluxo natural foi alterado pela construção de 618 barramentos, de capacidade 4,7 milhões de m3, com objetivos de irrigação e abastecimento de água. Assim, para testar a hipótese “a relação entre atributos funcionais e condições ambientais é semelhante nos períodos de seca e chuva na assembleia de peixes do rio Apodi”, avaliamos a relação atributo-ambiente nas estações seca e chuvosa. Para tal, medidas ecomorfológicas de todas as espécies de peixes coletadas foram obtidas e bases bibliográficas foram consultadas para compor uma matriz de atributos funcionais relacionados a uso do hábitat, locomoção, alimentação e reprodução. Posteriormente, para testar a resposta das características funcionais da assembleia de peixes às condições ambientais nas estações seca e úmida, foi utilizada uma análise de ordenação RLQ. Para avaliar a significância estatística da relação entre atributos funcionais e ambiente foram realizadas permutações com dois modelos nulos e uma análise fourth-corner que avaliou associações individuais entre atributos e ambiente. Em total foram registradas 21 espécies de peixes, avaliadas seis variáveis ambientais e 18 atributos funcionais. As assembleias de peixes apresentaram distribuição aleatória, indicando que não houve dependência das características ambientais (modelo 2, p=0,31). Não registramos uma relação significativa entre atributos funcionais e variáveis ambientais (modelo 4, p=0,44). Todavia, identificamos três associações significativas positivas (p<0,05) entre o atributos e variáveis ambientais: o atributo Posição da nadadeira peitoral (PFps) com largura do canal, Razão de configuração da nadadeira peitoral (FPar) com temperatura e Razão entre superfície das nadadeiras e tamanho do corpo (Fsf) com profundidade. Não foram obtidas diferenças entre as assembleias do período chuvoso e seco, sugerindo que os rios no semiárido brasileiro em contexto de baixas precipitações, não corroboram à premissa da Teoria do Habitat Template (HTT, TOOWSEND & HILDREW, 1994)Trabalho não financiado por agência de fomento, ou autofinanciadoUniversidade Federal Rural do Semi-ÁridoBrasilCentro de Ciências Biológicas e da Saúde - CCBSUFERSAPrograma de Pós-Graduação em Ecologia e ConservaçãoNovaes, José Luís Costa02114246760http://lattes.cnpq.br/2591406097032060Botero, Jorge Iván Sánchez51359472215http://lattes.cnpq.br/9058005255713255Botero, Jorge Iván Sánchez51359472215http://lattes.cnpq.br/9058005255713255Leitão, Rafael Pereira08801684711http://lattes.cnpq.br/1431026167939116Fernandes, Aline Fernanda Campagna21462633854http://lattes.cnpq.br/2484382689721394Almeida, José Robério de Sousa2021-12-22T12:45:28Z2020-04-252021-12-22T12:45:28Z2020-02-18info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfAlmeida (2020) (ALMEIDA, 2020)https://repositorio.ufersa.edu.br/handle/prefix/6863porALMEIDA, José Robério de Sousa. Relação atributo funcional-ambiente na assembleia de peixes de um rio intermitente da região Semiárida do Brasil. 2020. 44 f. Dissertação (Mestrado em Ecologia e Conservação), Universidade Federal Rural do Semi-Árido, Mossoró, 2020.CC-BY-SAhttps://creativecommons.org/licenses/by-sa/4.0/deed.pt_BRinfo:eu-repo/semantics/openAccessreponame:Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU)instname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSA2023-10-30T20:27:18Zoai:repositorio.ufersa.edu.br:prefix/6863Repositório Institucionalhttps://repositorio.ufersa.edu.br/PUBhttps://repositorio.ufersa.edu.br/server/oai/requestrepositorio@ufersa.edu.br || admrepositorio@ufersa.edu.bropendoar:2023-10-30T20:27:18Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) - Universidade Federal Rural do Semi-Árido (UFERSA)false |
dc.title.none.fl_str_mv |
Relação atributo funcional-ambiente na assembleia de peixes de um rio intermitente da região Semiárida do Brasil |
title |
Relação atributo funcional-ambiente na assembleia de peixes de um rio intermitente da região Semiárida do Brasil |
spellingShingle |
Relação atributo funcional-ambiente na assembleia de peixes de um rio intermitente da região Semiárida do Brasil Almeida, José Robério de Sousa Diversidade funcional Escala temporal Ictiofauna Ecossistema lótico Caatinga Functional Diversity Temporal scale Ichthyofauna Lotic ecosystem Caatinga CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA |
title_short |
Relação atributo funcional-ambiente na assembleia de peixes de um rio intermitente da região Semiárida do Brasil |
title_full |
Relação atributo funcional-ambiente na assembleia de peixes de um rio intermitente da região Semiárida do Brasil |
title_fullStr |
Relação atributo funcional-ambiente na assembleia de peixes de um rio intermitente da região Semiárida do Brasil |
title_full_unstemmed |
Relação atributo funcional-ambiente na assembleia de peixes de um rio intermitente da região Semiárida do Brasil |
title_sort |
Relação atributo funcional-ambiente na assembleia de peixes de um rio intermitente da região Semiárida do Brasil |
author |
Almeida, José Robério de Sousa |
author_facet |
Almeida, José Robério de Sousa |
author_role |
author |
dc.contributor.none.fl_str_mv |
Novaes, José Luís Costa 02114246760 http://lattes.cnpq.br/2591406097032060 Botero, Jorge Iván Sánchez 51359472215 http://lattes.cnpq.br/9058005255713255 Botero, Jorge Iván Sánchez 51359472215 http://lattes.cnpq.br/9058005255713255 Leitão, Rafael Pereira 08801684711 http://lattes.cnpq.br/1431026167939116 Fernandes, Aline Fernanda Campagna 21462633854 http://lattes.cnpq.br/2484382689721394 |
dc.contributor.author.fl_str_mv |
Almeida, José Robério de Sousa |
dc.subject.por.fl_str_mv |
Diversidade funcional Escala temporal Ictiofauna Ecossistema lótico Caatinga Functional Diversity Temporal scale Ichthyofauna Lotic ecosystem Caatinga CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA |
topic |
Diversidade funcional Escala temporal Ictiofauna Ecossistema lótico Caatinga Functional Diversity Temporal scale Ichthyofauna Lotic ecosystem Caatinga CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA |
description |
One of the great challenges of Ecology is to understand which processes define the patterns of diversity, especially among local communities. In semi-arid areas with well-marked wet and dry seasons, fish communities experience successive contractions/habitat expansions. These events directly influence the longitudinal continuum of the river, selecting species with characteristics that favor their survival in these conditions. Based on this premise, this study evaluated the potential environmental filtration in the functional structuring of the fish assembly of a river in the semi-arid region of Brazil during 2013, when the drought period was more prolonged. The Apodi/Mossoró River is originally intermittent with a magnitude of inundation defined by the volume of rainfall. Its natural flow was altered by the construction of 618 dams, with a capacity of 4.7 million m³, for irrigation and water supply purposes. Thus, to test the hypothesis “the relationship between functional attributes and environmental conditions is similar in the periods of drought and rain in the fish assembly of the Apodi River”, we evaluated the attribute-environment relationship in the dry and rainy seasons. For this, ecomorphological measures of all species of fish collected were obtained and bibliographic bases were consulted to compose a matrix of functional attributes related to habitat use, locomotion, feeding and reproduction. Subsequently, to test the response of the functional characteristics of the fish assemblage to environmental conditions in the dry and wet seasons, an RLQ ordering analysis was used. To assess the statistical significance of the relationship between functional attributes and environment, permutations were performed with two null models and a fourth-corner analysis that evaluated individual associations between attributes and environment. In total, 21 species of fish were recorded, six environmental variables and 18 functional attributes were evaluated. The fish assemblages presented a random distribution, indicating that there was no dependence on environmental characteristics (model 2, p = 0.31). We did not register a significant relationship between functional attributes and environmental variables (model 4, p = 0.44). However, we identified three significant positive associations (p <0.05) between attributes and environmental variables: the Pectoral fin position (PFps) attribute with channel width, Pectoral fin configuration ratio (FPar) with temperature and Surface ratio fins and body size (Fsf) with depth. No differences were found between the rainy and dry season assemblies, suggesting that rivers in the Brazilian semiarid in the context of low rainfall do not corroborate the premise of the Habitat Template Theory (HTT, TOOWSEND & HILDREW, 1994) |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-04-25 2020-02-18 2021-12-22T12:45:28Z 2021-12-22T12:45:28Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Almeida (2020) (ALMEIDA, 2020) https://repositorio.ufersa.edu.br/handle/prefix/6863 |
identifier_str_mv |
Almeida (2020) (ALMEIDA, 2020) |
url |
https://repositorio.ufersa.edu.br/handle/prefix/6863 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
ALMEIDA, José Robério de Sousa. Relação atributo funcional-ambiente na assembleia de peixes de um rio intermitente da região Semiárida do Brasil. 2020. 44 f. Dissertação (Mestrado em Ecologia e Conservação), Universidade Federal Rural do Semi-Árido, Mossoró, 2020. |
dc.rights.driver.fl_str_mv |
CC-BY-SA https://creativecommons.org/licenses/by-sa/4.0/deed.pt_BR info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
CC-BY-SA https://creativecommons.org/licenses/by-sa/4.0/deed.pt_BR |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido Brasil Centro de Ciências Biológicas e da Saúde - CCBS UFERSA Programa de Pós-Graduação em Ecologia e Conservação |
publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido Brasil Centro de Ciências Biológicas e da Saúde - CCBS UFERSA Programa de Pós-Graduação em Ecologia e Conservação |
dc.source.none.fl_str_mv |
reponame:Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) instname:Universidade Federal Rural do Semi-Árido (UFERSA) instacron:UFERSA |
instname_str |
Universidade Federal Rural do Semi-Árido (UFERSA) |
instacron_str |
UFERSA |
institution |
UFERSA |
reponame_str |
Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) |
collection |
Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) |
repository.name.fl_str_mv |
Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) - Universidade Federal Rural do Semi-Árido (UFERSA) |
repository.mail.fl_str_mv |
repositorio@ufersa.edu.br || admrepositorio@ufersa.edu.br |
_version_ |
1809747442876284928 |