Efeito de barramento e de eventos hidrológicos extremos sobre os padrões de diversidade beta funcional do fitoplâncton de planície de inundação.
Dams and predicted future extreme weather events can affect the structure of aquatic communities, both at a local and regional scale. They can influence, for example, the importance of sites and species for regional diversity as they promote local processes of extinction and colonization, as well as processes of biotic homogenization on a regional scale. It was investigated how damming and prolonged flood and drought periods influenced the local contribution to beta diversity (LCBD) based on phytoplankton functional groups (GFR), as well as the contribution of each GFR to beta diversity (SCBD). The relationship between the number of GFR (Functional richness - RF) on the LCBD was also evaluated. For this, it was analyzed data collected in years with extreme drought (2000-2001) and flood (2010-2011) from three sub-basins of the upper Paraná River floodplain were used, which have different damming effects (presence, indirect influence, and absence). Nutrient concentrations and pH influenced the beta diversity in the three sub-basins in the two periods. Extreme drought periods and the presence of a dam were related to higher values of LCBD and RF. High LCBD values were related to low RF values. Environments with the absence and indirect influence of the dam had higher RF values in the flood and higher LCBD values in the drought. GFR H1 (N-fixing cyanobacteria), Lo (large mucilaginous cyanobacteria), and P (filamentous diatoms) presented the greatest contribution to beta diversity. The damming region was related to filamentous cyanobacteria in the drought. The results showed that both damming and climatic periods influenced the contribution of sites to regional diversity. However, they also suggested that the greatest biotic uniqueness observed in the damming region and in the dry period was related to organisms that can affect water diversity and quality, such as cyanobacteria. It appears that these environments have unique environmental and biotic conditions that require greater attention in terms of monitoring to prevent the proliferation of organisms with toxigenic potential. The construction of dams in search of energy security, associated with the predicted scenario of an increase in extreme events, favors biotic uniqueness. Understanding how communities respond to these changes is crucial for the ecology of aquatic environments.
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Format: | Thesis/Dissertation biblioteca |
Language: | Portuguese |
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Universidade Estadual de Maringá. Departamento de Biologia. Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais.
2022
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Subjects: | Fitoplâncton de água doce, Ecologia, Barramento, Diversidade beta, Eventos hidrológicos extremos, ASFA_2015::P::Phytoplankton, ASFA_2015::E::Ecology, ASFA_2015::F::Floodplains, ASFA_2015::C::Climatic changes, ASFA_2015::D::Dams, ASFA_2015::A::Aquatic communities, ASFA_2015::W::Weather conditions, |
Online Access: | http://hdl.handle.net/1834/42087 |
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Fitoplâncton de água doce Ecologia Barramento Diversidade beta Eventos hidrológicos extremos ASFA_2015::P::Phytoplankton ASFA_2015::E::Ecology ASFA_2015::F::Floodplains ASFA_2015::C::Climatic changes ASFA_2015::D::Dams ASFA_2015::A::Aquatic communities ASFA_2015::W::Weather conditions Fitoplâncton de água doce Ecologia Barramento Diversidade beta Eventos hidrológicos extremos ASFA_2015::P::Phytoplankton ASFA_2015::E::Ecology ASFA_2015::F::Floodplains ASFA_2015::C::Climatic changes ASFA_2015::D::Dams ASFA_2015::A::Aquatic communities ASFA_2015::W::Weather conditions |
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Fitoplâncton de água doce Ecologia Barramento Diversidade beta Eventos hidrológicos extremos ASFA_2015::P::Phytoplankton ASFA_2015::E::Ecology ASFA_2015::F::Floodplains ASFA_2015::C::Climatic changes ASFA_2015::D::Dams ASFA_2015::A::Aquatic communities ASFA_2015::W::Weather conditions Fitoplâncton de água doce Ecologia Barramento Diversidade beta Eventos hidrológicos extremos ASFA_2015::P::Phytoplankton ASFA_2015::E::Ecology ASFA_2015::F::Floodplains ASFA_2015::C::Climatic changes ASFA_2015::D::Dams ASFA_2015::A::Aquatic communities ASFA_2015::W::Weather conditions Santos, Renata Felicio Efeito de barramento e de eventos hidrológicos extremos sobre os padrões de diversidade beta funcional do fitoplâncton de planície de inundação. |
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Dams and predicted future extreme weather events can affect the structure of aquatic communities, both at a local and regional scale. They can influence, for example, the importance of sites and species for regional diversity as they promote local processes of extinction and colonization, as well as processes of biotic homogenization on a regional scale. It was investigated how damming and prolonged flood and drought periods influenced the local contribution to beta diversity (LCBD) based on phytoplankton functional groups (GFR), as well as the contribution of each GFR to beta diversity (SCBD). The relationship between the number of GFR (Functional richness - RF) on the LCBD was also evaluated. For this, it was analyzed data collected in years with extreme drought (2000-2001) and flood (2010-2011) from three sub-basins of the upper Paraná River floodplain were used, which have different damming effects (presence, indirect influence, and absence). Nutrient concentrations and pH influenced the beta diversity in the three sub-basins in the two periods. Extreme drought periods and the presence of a dam were related to higher values of LCBD and RF. High LCBD values were related to low RF values. Environments with the absence and indirect influence of the dam had higher RF values in the flood and higher LCBD values in the drought. GFR H1 (N-fixing cyanobacteria), Lo (large mucilaginous cyanobacteria), and P (filamentous diatoms) presented the greatest contribution to beta diversity. The damming region was related to filamentous cyanobacteria in the drought. The results showed that both damming and climatic periods influenced the contribution of sites to regional diversity. However, they also suggested that the greatest biotic uniqueness observed in the damming region and in the dry period was related to organisms that can affect water diversity and quality, such as cyanobacteria. It appears that these environments have unique environmental and biotic conditions that require greater attention in terms of monitoring to prevent the proliferation of organisms with toxigenic potential. The construction of dams in search of energy security, associated with the predicted scenario of an increase in extreme events, favors biotic uniqueness. Understanding how communities respond to these changes is crucial for the ecology of aquatic environments. |
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Thesis/Dissertation |
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Fitoplâncton de água doce Ecologia Barramento Diversidade beta Eventos hidrológicos extremos ASFA_2015::P::Phytoplankton ASFA_2015::E::Ecology ASFA_2015::F::Floodplains ASFA_2015::C::Climatic changes ASFA_2015::D::Dams ASFA_2015::A::Aquatic communities ASFA_2015::W::Weather conditions |
author |
Santos, Renata Felicio |
author_facet |
Santos, Renata Felicio |
author_sort |
Santos, Renata Felicio |
title |
Efeito de barramento e de eventos hidrológicos extremos sobre os padrões de diversidade beta funcional do fitoplâncton de planície de inundação. |
title_short |
Efeito de barramento e de eventos hidrológicos extremos sobre os padrões de diversidade beta funcional do fitoplâncton de planície de inundação. |
title_full |
Efeito de barramento e de eventos hidrológicos extremos sobre os padrões de diversidade beta funcional do fitoplâncton de planície de inundação. |
title_fullStr |
Efeito de barramento e de eventos hidrológicos extremos sobre os padrões de diversidade beta funcional do fitoplâncton de planície de inundação. |
title_full_unstemmed |
Efeito de barramento e de eventos hidrológicos extremos sobre os padrões de diversidade beta funcional do fitoplâncton de planície de inundação. |
title_sort |
efeito de barramento e de eventos hidrológicos extremos sobre os padrões de diversidade beta funcional do fitoplâncton de planície de inundação. |
publisher |
Universidade Estadual de Maringá. Departamento de Biologia. Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais. |
publishDate |
2022 |
url |
http://hdl.handle.net/1834/42087 |
work_keys_str_mv |
AT santosrenatafelicio efeitodebarramentoedeeventoshidrologicosextremossobreospadroesdediversidadebetafuncionaldofitoplanctondeplaniciedeinundacao AT santosrenatafelicio effectofadamandextremehydrologicaleventsonfunctionalbetadiversityphytoplanktoninafloodplain |
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dig-aquadocs-1834-420872022-08-12T02:12:50Z Efeito de barramento e de eventos hidrológicos extremos sobre os padrões de diversidade beta funcional do fitoplâncton de planície de inundação. Effect of a dam and extreme hydrological events on functional beta diversity phytoplankton in a floodplain Santos, Renata Felicio Fitoplâncton de água doce Ecologia Barramento Diversidade beta Eventos hidrológicos extremos ASFA_2015::P::Phytoplankton ASFA_2015::E::Ecology ASFA_2015::F::Floodplains ASFA_2015::C::Climatic changes ASFA_2015::D::Dams ASFA_2015::A::Aquatic communities ASFA_2015::W::Weather conditions Dams and predicted future extreme weather events can affect the structure of aquatic communities, both at a local and regional scale. They can influence, for example, the importance of sites and species for regional diversity as they promote local processes of extinction and colonization, as well as processes of biotic homogenization on a regional scale. It was investigated how damming and prolonged flood and drought periods influenced the local contribution to beta diversity (LCBD) based on phytoplankton functional groups (GFR), as well as the contribution of each GFR to beta diversity (SCBD). The relationship between the number of GFR (Functional richness - RF) on the LCBD was also evaluated. For this, it was analyzed data collected in years with extreme drought (2000-2001) and flood (2010-2011) from three sub-basins of the upper Paraná River floodplain were used, which have different damming effects (presence, indirect influence, and absence). Nutrient concentrations and pH influenced the beta diversity in the three sub-basins in the two periods. Extreme drought periods and the presence of a dam were related to higher values of LCBD and RF. High LCBD values were related to low RF values. Environments with the absence and indirect influence of the dam had higher RF values in the flood and higher LCBD values in the drought. GFR H1 (N-fixing cyanobacteria), Lo (large mucilaginous cyanobacteria), and P (filamentous diatoms) presented the greatest contribution to beta diversity. The damming region was related to filamentous cyanobacteria in the drought. The results showed that both damming and climatic periods influenced the contribution of sites to regional diversity. However, they also suggested that the greatest biotic uniqueness observed in the damming region and in the dry period was related to organisms that can affect water diversity and quality, such as cyanobacteria. It appears that these environments have unique environmental and biotic conditions that require greater attention in terms of monitoring to prevent the proliferation of organisms with toxigenic potential. The construction of dams in search of energy security, associated with the predicted scenario of an increase in extreme events, favors biotic uniqueness. Understanding how communities respond to these changes is crucial for the ecology of aquatic environments. Os barramentos e os eventos hidrológicos extremos atuais e os preditos para o futuro podem afetar a estrutura das comunidades aquáticas, tanto em escala local quanto regional. Estes eventos podem influenciar a importância de locais e espécies para a diversidade regional pois promovem processos locais de extinção e colonização, assim como processos de homogeneização biótica em escala regional. Foi investigado como o efeito de barramento e períodos de cheia e seca prolongados influenciam a contribuição local para a diversidade beta (LCBD) fitoplanctônica, baseada em grupos funcionais de Reynolds (GFR), e a contribuição de cada grupo funcional para a diversidade beta (SCBD). a relação entre o número de GFR (Riqueza Funcional – RF) sobre o LCBD. Para isso, utilizados dados de três sub-bacias da planície de inundação do alto rio Paraná, que possuem diferentes efeitos de barramento (presença, influência indireta e ausência), nos anos de seca (2000-2001) e cheia (2010-2011) extremas. As concentrações de nutrientes e o pH estiveram relacionadas com os padrões da diversidade beta nas três sub-bacias e nos dois períodos. Períodos de seca extrema e ambientes com presença de barramento apresentaram maiores valores de LCBD e RF. Altos valores de LCBD estiveram relacionados a baixos valores de RF. Ambientes com ausência e influência indireta de barramento apresentaram maiores valores de RF na cheia e maiores valores de LCBD na seca. Os GFR H1 (cianobactérias N-fixadoras), Lo (grandes cianobactérias mucilaginosas) e P (diatomáceas filamentosas) apresentaram maior contribuição à diversidade beta. A região com barramento esteve relacionada com cianobactérias filamentosas na seca. Os resultados mostraram que tanto barramento quanto períodos hidrológicos influenciaram a contribuição dos locais à diversidade regional. Porém, a maior singularidade biótica observada na região com barramento e no período seco esteve relacionada com organismos que podem afetar à diversidade e qualidade de água, como as cianobactérias. Esses ambientes aparentam possuir condições ambientais e bióticas exclusivas que requerem maior atenção em relação a monitoramento para evitar a proliferação de organismos com potencial toxigênico. A construção de barramentos em busca da segurança energética, associada ao cenário predito de aumento de eventos extremos, favorece a singularidade biótica. Entender como as comunidades respondem a essas alterações é crucial para ecologia de ambientes aquáticos. Masters 2022-07-26T20:46:29Z 2022-07-26T20:46:29Z 2022 Thesis/Dissertation http://hdl.handle.net/1834/42087 pt http://nou-rau.uem.br/nou-rau/document/?code=4538 http://repositorio.uem.br:8080/jspui/handle/1/6745 41pp. Brasil. Brazil. Planície de inundação do alto rio Paraná - Brasil. Upper Paraná River floodplain - Brazil. Universidade Estadual de Maringá. Departamento de Biologia. Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais. |