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São Gonçalo Channel as an Ecological Corridor for the Movement of Migratory Fishes: Environmental History and Perspectives for Fishery Management in the Mirim Lagoon, South Brazil

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URI: http://hdl.handle.net/10498/28755

DOI: 10.26359/costas.0108

ISSN: 2304-0963

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Author/s
Burns, Marcelo Dias de Mattos; Velasco, Gonzalo; Cheffe, Morevy Moreira
Date
2019-02
Source
Costas Vol. 1, nº 1 (2019), pp. 147-164
Abstract
Ecological corridors are important for maintaining the flow of species between habitat patches. The analysis of historical records of the dam-sluice gate construction process and the ecology of known migratory fishes in the Patos-Mirim hydrographic system reveals large spatial scale environmental changes, such as the loss of potential estuarine area of 2,536 km2 and the reduction of functional connectivity between the lagoons through the São Gonçalo channel corridor for five species: Genidens barbus, Genidens planifrons, Genidens genidens (sea catfishes), Micropogonias furnieri (whitemouth croaker) and Mugil liza (Lebranche mullet). Mitigation measures are indicated through the operation of the sluice gate system as well as the regulation of fishing along the São Gonçalo channel.
 
Los corredores ecológicos son importantes para mantener el flujo de especies entre hábitat. El análisis de los registros históricos del proceso de construcción de la compuerta de la esclusa y la ecología de los peces migratorios conocidos en el sistema hidrográfico Patos-Mirim muestra grandes cambios ambientales a escala espacial, como la pérdida de un área estuarina potencial de 2.536 km2 y la reducción de la capacidad funcional. La conectividad entre las lagunas a través del corredor del canal São Gonçalo para cinco especies: Genidens barbus, Genidens planifrons, Genidens genidens, Micropogonias furnieri y Mugil liza. Las medidas de mitigación están indicadas a través de la operación del sistema de compuertas y de la regulación de la pesca a lo largo del canal de São Gonçalo.
 
Subjects
Habitat loss, connectivity, movement, coastal lagoons; Habitat loss; connectivity; movement; coastal lagoons; Pérdida de hábitat; conectividad; lagunas costeras
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  • Costas Vol. 1 nº 01 (2019) [12]
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
This work is under a Creative Commons License Attribution-NonCommercial-NoDerivatives 4.0 Internacional

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