Influence of habitats on fish assemblages in tropical marine coastal areas of the Southwestern Atlantic

Abstract In the Southwestern Atlantic, estuarine and marine habitats connect to form biodiverse coastal landscapes. However, the structuring relationships of the assemblages in these landscapes are not yet fully understood. In this context, we sought to investigate the composition of fish assemblage...

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Main Authors: Márcio J. C. A. Lima Júnior, José A. C. C. Nunes, Cláudio L. S. Sampaio
Format: Article
Language:English
Published: Sociedade Brasileira de Ictiologia 2025-02-01
Series:Neotropical Ichthyology
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Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252025000100205&lng=en&tlng=en
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author Márcio J. C. A. Lima Júnior
José A. C. C. Nunes
Cláudio L. S. Sampaio
author_facet Márcio J. C. A. Lima Júnior
José A. C. C. Nunes
Cláudio L. S. Sampaio
author_sort Márcio J. C. A. Lima Júnior
collection DOAJ
description Abstract In the Southwestern Atlantic, estuarine and marine habitats connect to form biodiverse coastal landscapes. However, the structuring relationships of the assemblages in these landscapes are not yet fully understood. In this context, we sought to investigate the composition of fish assemblages from estuarine and marine habitats: mangroves, artificial structures, sandstone and coral reefs. We also sought to understand the relationship between the assemblages of these habitats by means of similarity. The research was carried out in the RESEX de Jequiá (RXJ) - AL and in Porto Seguro (PTS) - BA, using single Baited Underwater Video (BRUV). At total, 80 samples were taken (40 per location). The coral reef samples stood out significantly, with the greatest richness and abundance at both locations. RXJ had 18% similarity between its habitats, while PTS had 31%, indicating a relationship and the sharing of species in the composition of their assemblages. Sandstone reefs proved to be structural links between mangroves and coral reefs. Additionally, habitat characteristics and depth significantly influence the composition of the assemblages. Here we highlight relevant information for tropical areas little investigated by science in the Southwestern Atlantic, especially with regard to the importance of coastal sandstone reefs.
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publishDate 2025-02-01
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series Neotropical Ichthyology
spelling doaj-art-ce1ff7331c644023a271be68e5c8bfd62025-02-11T07:42:59ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02242025-02-0123110.1590/1982-0224-2024-0038Influence of habitats on fish assemblages in tropical marine coastal areas of the Southwestern AtlanticMárcio J. C. A. Lima Júniorhttps://orcid.org/0000-0003-2454-3926José A. C. C. Nuneshttps://orcid.org/0000-0002-2743-797XCláudio L. S. Sampaiohttps://orcid.org/0000-0002-0389-2302Abstract In the Southwestern Atlantic, estuarine and marine habitats connect to form biodiverse coastal landscapes. However, the structuring relationships of the assemblages in these landscapes are not yet fully understood. In this context, we sought to investigate the composition of fish assemblages from estuarine and marine habitats: mangroves, artificial structures, sandstone and coral reefs. We also sought to understand the relationship between the assemblages of these habitats by means of similarity. The research was carried out in the RESEX de Jequiá (RXJ) - AL and in Porto Seguro (PTS) - BA, using single Baited Underwater Video (BRUV). At total, 80 samples were taken (40 per location). The coral reef samples stood out significantly, with the greatest richness and abundance at both locations. RXJ had 18% similarity between its habitats, while PTS had 31%, indicating a relationship and the sharing of species in the composition of their assemblages. Sandstone reefs proved to be structural links between mangroves and coral reefs. Additionally, habitat characteristics and depth significantly influence the composition of the assemblages. Here we highlight relevant information for tropical areas little investigated by science in the Southwestern Atlantic, especially with regard to the importance of coastal sandstone reefs.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252025000100205&lng=en&tlng=enBRUVConservationEcologyIchthyofaunaReef
spellingShingle Márcio J. C. A. Lima Júnior
José A. C. C. Nunes
Cláudio L. S. Sampaio
Influence of habitats on fish assemblages in tropical marine coastal areas of the Southwestern Atlantic
Neotropical Ichthyology
BRUV
Conservation
Ecology
Ichthyofauna
Reef
title Influence of habitats on fish assemblages in tropical marine coastal areas of the Southwestern Atlantic
title_full Influence of habitats on fish assemblages in tropical marine coastal areas of the Southwestern Atlantic
title_fullStr Influence of habitats on fish assemblages in tropical marine coastal areas of the Southwestern Atlantic
title_full_unstemmed Influence of habitats on fish assemblages in tropical marine coastal areas of the Southwestern Atlantic
title_short Influence of habitats on fish assemblages in tropical marine coastal areas of the Southwestern Atlantic
title_sort influence of habitats on fish assemblages in tropical marine coastal areas of the southwestern atlantic
topic BRUV
Conservation
Ecology
Ichthyofauna
Reef
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252025000100205&lng=en&tlng=en
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AT joseaccnunes influenceofhabitatsonfishassemblagesintropicalmarinecoastalareasofthesouthwesternatlantic
AT claudiolssampaio influenceofhabitatsonfishassemblagesintropicalmarinecoastalareasofthesouthwesternatlantic