Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SP
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Tipo de documento: | Trabalho de conclusão de curso |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/155808 http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-08-24/000889763.pdf |
Resumo: | Urochloa arrecta is an aquatic macrophyte originally from Africa. It is known to affect tropical and subtropical areas due to its high regeneration potential and have shown high competitiveness against emerging species. Because that it have been considered an invasive exotic species that has been caused injuries to the Brazilian aquatic ecosystems. In recent years U. arrecta has expanded its occupation area in Itanhaém and places previously occupied by native species Eichhornia azurea. Both species have rooted/floating habit and has been observed that exotic species growth causes reduction of biodiversity and functional diversity of aquatic macrophytes in the region. In order to verify that the abiotic characteristics of that two species occurence places is similar and infer about the U. arrecta's expansion and E. azurea's reduction in the Itanhaém River basin, It were set a total of 30 sampling sites, among which 10 were located in monospecific banks of E. azurea, 10 in monospecific banks of U. arrecta and 10 in mixed banks. In each bank were obtained of abiotic variables values to dissolved O2, photosynthetically active radiation, different forms of nitrogen and phosphorus and also held biomass measurements. By applying a Principal Component Analysis (PCA) to appreciate the ordering of collection sites was observed that the abiotic characteristics from some sites are distinct because different rivers characteritics and its types of water and macrophyte banks are not distributed according to these characteristics. The exotic species, as well as native, occur in different types of water indicating that the two species have a wide tolerance to these abiotic characteristics. From the results we can infer that the distribution of the two species is related to other variables, such as the order of arrival in the colonization and probably the replacement of native species by exotic will continue to occur in the basin |
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Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SPEcologia aquaticaEcossistemas aquáticosMacrófitas aquáticasPlantas invasorasBiomassa vegetalEichhorniaBrasilItanhaem (SP)Itanhaém, Rio, Bacia (SP)Urochloa arrecta is an aquatic macrophyte originally from Africa. It is known to affect tropical and subtropical areas due to its high regeneration potential and have shown high competitiveness against emerging species. Because that it have been considered an invasive exotic species that has been caused injuries to the Brazilian aquatic ecosystems. In recent years U. arrecta has expanded its occupation area in Itanhaém and places previously occupied by native species Eichhornia azurea. Both species have rooted/floating habit and has been observed that exotic species growth causes reduction of biodiversity and functional diversity of aquatic macrophytes in the region. In order to verify that the abiotic characteristics of that two species occurence places is similar and infer about the U. arrecta's expansion and E. azurea's reduction in the Itanhaém River basin, It were set a total of 30 sampling sites, among which 10 were located in monospecific banks of E. azurea, 10 in monospecific banks of U. arrecta and 10 in mixed banks. In each bank were obtained of abiotic variables values to dissolved O2, photosynthetically active radiation, different forms of nitrogen and phosphorus and also held biomass measurements. By applying a Principal Component Analysis (PCA) to appreciate the ordering of collection sites was observed that the abiotic characteristics from some sites are distinct because different rivers characteritics and its types of water and macrophyte banks are not distributed according to these characteristics. The exotic species, as well as native, occur in different types of water indicating that the two species have a wide tolerance to these abiotic characteristics. From the results we can infer that the distribution of the two species is related to other variables, such as the order of arrival in the colonization and probably the replacement of native species by exotic will continue to occur in the basinUrochloa arrecta é uma macrófita aquática originária da África conhecida por afetar zonas tropicais e subtropicais devido ao seu alto potencial de regeneração e demonstração de alta competitividade com espécies emergentes, considerada uma exótica invasora tem causado prejuízo aos ecossistemas aquáticos brasileiros. Nos últimos anos tem expandido sua área de ocorrência em Itanhaém e preenchido locais anteriormente ocupados pela espécie nativa Eichhornia azurea. Ambas as espécies possuem hábito enraizado/flutuante e, já foi observado que esta espécie exótica provoca redução da biodiversidade e da diversidade funcional de macrófitas aquáticas na região. Com o objetivo de verificar se as características abióticas dos locais de ocorrência das duas espécies são semelhantes ou não, para inferir sobre a expansão de U. arrecta e redução da área de ocorrência de E. azurea na bacia do rio Itanhaém foram estabelecidos um total de 30 locais de amostragem, sendo 10 localizados em bancos monoespecíficos de E. azurea, 10 em bancos monoespecíficos de U. arrecta e 10 bancos mistos. Em cada banco obteve-se valores de variáveis abióticas (O2 dissolvido, radiação fotossinteticamente ativa, diferentes formas de nitrogênio e fósforo) e, realizadas medidas de biomassa. Através da aplicação de uma Análise de Componentes Principais (ACP) para avaliar a ordenação dos locais de coleta foi possível observar que embora as características abióticas sejam distintas entre alguns pontos de coleta e caracterizem diferentes rios e tipos de água, os bancos de macrófitas não se distribuem de acordo com estas características. A espécie exótica, assim como a nativa, ocorre nos diferentes tipos de água indicando que as duas espécies possuem uma ampla tolerância às características abióticas dos locais. A partir dos resultados obtidos podemos inferir que a distribuição de ambas as espécies está relacionada com outras...Universidade Estadual Paulista (Unesp)Camargo, Antonio Fernando Monteiro [UNESP]Universidade Estadual Paulista (Unesp)Gonçalves, Dafner Cristina Vida [UNESP]2018-08-30T18:23:09Z2018-08-30T18:23:09Z2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/bachelorThesis26 f.application/pdfGONÇALVES, Dafner Cristina Vida. Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SP. 2016. 26 f. Trabalho de conclusão de curso (Ecologia) - Universidade Estadual Paulista Júlio de Mesquita Filho, Instituto de Biociências (Campus de Rio Claro), 2016.http://hdl.handle.net/11449/155808000889763http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-08-24/000889763.pdfAlephreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporinfo:eu-repo/semantics/openAccess2023-11-24T06:13:01Zoai:repositorio.unesp.br:11449/155808Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:34:44.123338Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SP |
title |
Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SP |
spellingShingle |
Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SP Gonçalves, Dafner Cristina Vida [UNESP] Ecologia aquatica Ecossistemas aquáticos Macrófitas aquáticas Plantas invasoras Biomassa vegetal Eichhornia Brasil Itanhaem (SP) Itanhaém, Rio, Bacia (SP) |
title_short |
Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SP |
title_full |
Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SP |
title_fullStr |
Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SP |
title_full_unstemmed |
Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SP |
title_sort |
Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SP |
author |
Gonçalves, Dafner Cristina Vida [UNESP] |
author_facet |
Gonçalves, Dafner Cristina Vida [UNESP] |
author_role |
author |
dc.contributor.none.fl_str_mv |
Camargo, Antonio Fernando Monteiro [UNESP] Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Gonçalves, Dafner Cristina Vida [UNESP] |
dc.subject.por.fl_str_mv |
Ecologia aquatica Ecossistemas aquáticos Macrófitas aquáticas Plantas invasoras Biomassa vegetal Eichhornia Brasil Itanhaem (SP) Itanhaém, Rio, Bacia (SP) |
topic |
Ecologia aquatica Ecossistemas aquáticos Macrófitas aquáticas Plantas invasoras Biomassa vegetal Eichhornia Brasil Itanhaem (SP) Itanhaém, Rio, Bacia (SP) |
description |
Urochloa arrecta is an aquatic macrophyte originally from Africa. It is known to affect tropical and subtropical areas due to its high regeneration potential and have shown high competitiveness against emerging species. Because that it have been considered an invasive exotic species that has been caused injuries to the Brazilian aquatic ecosystems. In recent years U. arrecta has expanded its occupation area in Itanhaém and places previously occupied by native species Eichhornia azurea. Both species have rooted/floating habit and has been observed that exotic species growth causes reduction of biodiversity and functional diversity of aquatic macrophytes in the region. In order to verify that the abiotic characteristics of that two species occurence places is similar and infer about the U. arrecta's expansion and E. azurea's reduction in the Itanhaém River basin, It were set a total of 30 sampling sites, among which 10 were located in monospecific banks of E. azurea, 10 in monospecific banks of U. arrecta and 10 in mixed banks. In each bank were obtained of abiotic variables values to dissolved O2, photosynthetically active radiation, different forms of nitrogen and phosphorus and also held biomass measurements. By applying a Principal Component Analysis (PCA) to appreciate the ordering of collection sites was observed that the abiotic characteristics from some sites are distinct because different rivers characteritics and its types of water and macrophyte banks are not distributed according to these characteristics. The exotic species, as well as native, occur in different types of water indicating that the two species have a wide tolerance to these abiotic characteristics. From the results we can infer that the distribution of the two species is related to other variables, such as the order of arrival in the colonization and probably the replacement of native species by exotic will continue to occur in the basin |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016 2018-08-30T18:23:09Z 2018-08-30T18:23:09Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/bachelorThesis |
format |
bachelorThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
GONÇALVES, Dafner Cristina Vida. Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SP. 2016. 26 f. Trabalho de conclusão de curso (Ecologia) - Universidade Estadual Paulista Júlio de Mesquita Filho, Instituto de Biociências (Campus de Rio Claro), 2016. http://hdl.handle.net/11449/155808 000889763 http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-08-24/000889763.pdf |
identifier_str_mv |
GONÇALVES, Dafner Cristina Vida. Distribuição e características abióticas de bancos de Urochloa arrecta e Eichhornia azurea na bacia do rio Itanhaém, SP. 2016. 26 f. Trabalho de conclusão de curso (Ecologia) - Universidade Estadual Paulista Júlio de Mesquita Filho, Instituto de Biociências (Campus de Rio Claro), 2016. 000889763 |
url |
http://hdl.handle.net/11449/155808 http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-08-24/000889763.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
26 f. application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
publisher.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.source.none.fl_str_mv |
Aleph 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 |
|
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1808128951375101952 |