Simultaneous abrupt shifts in hydrology and fish assemblage structure in a floodplain lake in the central Amazon
Combined effects of climate change and deforestation have altered precipitation patterns in the Amazon. This has led to changes in the frequency of extreme events of flood and drought in recent decades and in the magnitude of the annual flood pulse, a phenomenon that influences virtually all aspects...
| Autor principal: | Röpke, Cristhiana Paula |
|---|---|
| Outros Autores: | Amadio, Sidinéia Aparecida, Zuanon, Jansen, Ferreira, Efrem J.G., Deus, C. P., Pires, Tiago H.S., Winemiller, Kirk O. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Scientific Reports
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/15221 |
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oai:repositorio:1-15221 |
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oai:repositorio:1-15221 Simultaneous abrupt shifts in hydrology and fish assemblage structure in a floodplain lake in the central Amazon Röpke, Cristhiana Paula Amadio, Sidinéia Aparecida Zuanon, Jansen Ferreira, Efrem J.G. Deus, C. P. Pires, Tiago H.S. Winemiller, Kirk O. Biodiversity Consumer Drought Fishery Floodplain Human Hydrology Life History Species Stress Structure Activity Relation Trophic Level Animals Biota Classification Climate Change Environmental Protection Fish Flooding Growth, Development And Aging Lake Longitudinal Study River Water Cycle Animal Biota Climate Change Conservation Of Natural Resources Fishes Floods Lakes Longitudinal Studies Rivers Water Cycle Combined effects of climate change and deforestation have altered precipitation patterns in the Amazon. This has led to changes in the frequency of extreme events of flood and drought in recent decades and in the magnitude of the annual flood pulse, a phenomenon that influences virtually all aspects of river-floodplain ecosystem dynamics. Analysis of long-term data revealed abrupt and synchronous changes in hydrology and fish assemblage structure of a floodplain lake near the confluence of Amazon and Negro rivers. After an intense drought in 2005, the assemblage assumed a different and fairly persistent taxonomic composition and functional structure. Declines in abundance after 2005 were more pronounced for species of all sizes having equilibrium life history strategy, large species with periodic life history strategy, and for all trophic levels except primary consumers. Our results suggest that the extreme drought triggered changes in the fish assemblage and subsequent anomalous hydrological conditions have hampered assemblage recovery. These findings stress the need to account for climatic-driven hydrological changes in conservation efforts addressing aquatic biodiversity and fishery resources in the central Amazon. © The Author(s) 2017. 2020-05-07T14:14:48Z 2020-05-07T14:14:48Z 2017 Artigo https://repositorio.inpa.gov.br/handle/1/15221 10.1038/srep40170 en Volume 7 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Scientific Reports |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Biodiversity Consumer Drought Fishery Floodplain Human Hydrology Life History Species Stress Structure Activity Relation Trophic Level Animals Biota Classification Climate Change Environmental Protection Fish Flooding Growth, Development And Aging Lake Longitudinal Study River Water Cycle Animal Biota Climate Change Conservation Of Natural Resources Fishes Floods Lakes Longitudinal Studies Rivers Water Cycle |
| spellingShingle |
Biodiversity Consumer Drought Fishery Floodplain Human Hydrology Life History Species Stress Structure Activity Relation Trophic Level Animals Biota Classification Climate Change Environmental Protection Fish Flooding Growth, Development And Aging Lake Longitudinal Study River Water Cycle Animal Biota Climate Change Conservation Of Natural Resources Fishes Floods Lakes Longitudinal Studies Rivers Water Cycle Röpke, Cristhiana Paula Simultaneous abrupt shifts in hydrology and fish assemblage structure in a floodplain lake in the central Amazon |
| topic_facet |
Biodiversity Consumer Drought Fishery Floodplain Human Hydrology Life History Species Stress Structure Activity Relation Trophic Level Animals Biota Classification Climate Change Environmental Protection Fish Flooding Growth, Development And Aging Lake Longitudinal Study River Water Cycle Animal Biota Climate Change Conservation Of Natural Resources Fishes Floods Lakes Longitudinal Studies Rivers Water Cycle |
| description |
Combined effects of climate change and deforestation have altered precipitation patterns in the Amazon. This has led to changes in the frequency of extreme events of flood and drought in recent decades and in the magnitude of the annual flood pulse, a phenomenon that influences virtually all aspects of river-floodplain ecosystem dynamics. Analysis of long-term data revealed abrupt and synchronous changes in hydrology and fish assemblage structure of a floodplain lake near the confluence of Amazon and Negro rivers. After an intense drought in 2005, the assemblage assumed a different and fairly persistent taxonomic composition and functional structure. Declines in abundance after 2005 were more pronounced for species of all sizes having equilibrium life history strategy, large species with periodic life history strategy, and for all trophic levels except primary consumers. Our results suggest that the extreme drought triggered changes in the fish assemblage and subsequent anomalous hydrological conditions have hampered assemblage recovery. These findings stress the need to account for climatic-driven hydrological changes in conservation efforts addressing aquatic biodiversity and fishery resources in the central Amazon. © The Author(s) 2017. |
| format |
Artigo |
| author |
Röpke, Cristhiana Paula |
| author2 |
Amadio, Sidinéia Aparecida Zuanon, Jansen Ferreira, Efrem J.G. Deus, C. P. Pires, Tiago H.S. Winemiller, Kirk O. |
| author2Str |
Amadio, Sidinéia Aparecida Zuanon, Jansen Ferreira, Efrem J.G. Deus, C. P. Pires, Tiago H.S. Winemiller, Kirk O. |
| title |
Simultaneous abrupt shifts in hydrology and fish assemblage structure in a floodplain lake in the central Amazon |
| title_short |
Simultaneous abrupt shifts in hydrology and fish assemblage structure in a floodplain lake in the central Amazon |
| title_full |
Simultaneous abrupt shifts in hydrology and fish assemblage structure in a floodplain lake in the central Amazon |
| title_fullStr |
Simultaneous abrupt shifts in hydrology and fish assemblage structure in a floodplain lake in the central Amazon |
| title_full_unstemmed |
Simultaneous abrupt shifts in hydrology and fish assemblage structure in a floodplain lake in the central Amazon |
| title_sort |
simultaneous abrupt shifts in hydrology and fish assemblage structure in a floodplain lake in the central amazon |
| publisher |
Scientific Reports |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/15221 |
| _version_ |
1787141761975451648 |
| score |
11.675608 |