Short‐term dynamics in fish assemblage structure on a sheltered sandy beach in Guanabara Bay, Southeastern Brazil
Identifieur interne : 007934 ( Istex/Curation ); précédent : 007933; suivant : 007935Short‐term dynamics in fish assemblage structure on a sheltered sandy beach in Guanabara Bay, Southeastern Brazil
Auteurs : Ruan Managna Vasconcellos [Brésil] ; Francisco Gerson Araújo [Brésil] ; Joaquim Neto De Sousa Santos [Brésil] ; Márcio De Araújo Silva [Brésil]Source :
- Marine Ecology [ 0173-9565 ] ; 2010-09.
Descripteurs français
English descriptors
- KwdEn :
- Abundant species, Academic press, Anchoa, Anchoa lyoleps, Aquatic sciences, Araujo, Araujo silva dynamics, Argenteus, Assemblage, Assemblage structure, Assemblage structures, Assemblage table, Atherinella, Atherinella brasiliensis, Biomass, Biotic interactions, Blackwell verlag gmbh dynamics, Blackwell verlag gmbh vasconcellos, Brasiliensis, Canonical correspondence analysis, Carolinus, Clupeola, Coastal, Community structure, Coroides, Diel, Diel stability, Diel variation, Diplodus argenteus, Dynamics, Ecology, Environmental variables, Estuarine, Estuary, Flamengo, Flamengo beach, Gmbh, Guanabara, Harengula, Harengula clupeola, High abundance, High temperature, Higher abundance, Important changes, Individual species, Janeiro, Littoralis, Liza, Lowest values, Lyoleps, Major factor, Marine biology, Marine ecology, Marine ecology progress series, Marine science, Mugil, Mugil liza, Multivariate analyses, Ordination, Other hand, Partitioning, Peixes, Pessanha, Pessanha araujo, Pomatomus, Pomatomus saltatrix, Poxton allouse, Present study, Relative abundance, Resource partitioning, Revista brasileira, Salinity, Saltatrix, Sandy beach, Sandy beaches, Sardinella, Sardinella janeiro, Seasonal changes, Seasonal dynamics, Seasonal variation, Sepetiba, Shelf science, Shes, Shorter time scale, Silva, Simper, Sousa, Species composition, Species richness, Such areas, Summer autumn, Surf, Surf zone, Temperate areas, Total length, Total number, Trachinotus, Trachinotus carolinus, Tropical beaches, Umbrina, Umbrina coroides, Vasconcellos, Verlag, Water quality, Whole time period.
- Teeft :
- Abundant species, Academic press, Anchoa, Anchoa lyoleps, Aquatic sciences, Araujo, Araujo silva dynamics, Argenteus, Assemblage, Assemblage structure, Assemblage structures, Assemblage table, Atherinella, Atherinella brasiliensis, Biomass, Biotic interactions, Blackwell verlag gmbh dynamics, Blackwell verlag gmbh vasconcellos, Brasiliensis, Canonical correspondence analysis, Carolinus, Clupeola, Coastal, Community structure, Coroides, Diel, Diel stability, Diel variation, Diplodus argenteus, Dynamics, Ecology, Environmental variables, Estuarine, Estuary, Flamengo, Flamengo beach, Gmbh, Guanabara, Harengula, Harengula clupeola, High abundance, High temperature, Higher abundance, Important changes, Individual species, Janeiro, Littoralis, Liza, Lowest values, Lyoleps, Major factor, Marine biology, Marine ecology, Marine ecology progress series, Marine science, Mugil, Mugil liza, Multivariate analyses, Ordination, Other hand, Partitioning, Peixes, Pessanha, Pessanha araujo, Pomatomus, Pomatomus saltatrix, Poxton allouse, Present study, Relative abundance, Resource partitioning, Revista brasileira, Salinity, Saltatrix, Sandy beach, Sandy beaches, Sardinella, Sardinella janeiro, Seasonal changes, Seasonal dynamics, Seasonal variation, Sepetiba, Shelf science, Shes, Shorter time scale, Silva, Simper, Sousa, Species composition, Species richness, Such areas, Summer autumn, Surf, Surf zone, Temperate areas, Total length, Total number, Trachinotus, Trachinotus carolinus, Tropical beaches, Umbrina, Umbrina coroides, Vasconcellos, Verlag, Water quality, Whole time period.
Abstract
Short‐term dynamics in juvenile fish assemblage structure were studied to test whether the most abundant species show temporal segregation, in order to assess whether selected environmental variables could predict species groupings, and to examine the stability of sunset–day–sunrise–night differences. Samplings were collected at 3‐h intervals over 48 h on a seasonal basis between spring 2005 and winter 2006. Fish species richness and abundance were higher in spring, and the lowest values occurred in winter. Harengula clupeola occurred mainly in spring, whereas Atherinella brasiliensis peaked in summer and autumn. On the other hand, Trachinotus carolinus, Umbrina coroides and Mugil liza were abundant in winter. Although temperature, salinity and dissolved oxygen were not found to have a strong effect on the abundance patterns of most species, they did appear to have a significant influence on assemblage groupings, according to canonical correspondence analysis and Spearman rank correlation. There is no consistency of diel usage patterns by a given species across seasons. The relative abundance differed between the time of day, which differed among the seasons; this further complicates an understanding of the dynamics of an assemblage. Studies of diel changes that pooled the sampling period as day or night can miss important changes that occur in a short time scale, such as a 3‐h period.
Url:
DOI: 10.1111/j.1439-0485.2010.00375.x
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<affiliation wicri:level="1"><mods:affiliation> Programa de Pós Graduação em Biologia Animal – PPGBA, Universidade Federal Rural do Rio de Janeiro, Laboratório de Ecologia de Peixes, Seropédica, Rio de Janeiro, Brazil</mods:affiliation>
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<wicri:regionArea> Programa de Pós Graduação em Biologia Animal – PPGBA, Universidade Federal Rural do Rio de Janeiro, Laboratório de Ecologia de Peixes, Seropédica, Rio de Janeiro</wicri:regionArea>
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<term>Diel variation</term>
<term>Diplodus argenteus</term>
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<term>Ecology</term>
<term>Environmental variables</term>
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<front><div type="abstract" xml:lang="en">Short‐term dynamics in juvenile fish assemblage structure were studied to test whether the most abundant species show temporal segregation, in order to assess whether selected environmental variables could predict species groupings, and to examine the stability of sunset–day–sunrise–night differences. Samplings were collected at 3‐h intervals over 48 h on a seasonal basis between spring 2005 and winter 2006. Fish species richness and abundance were higher in spring, and the lowest values occurred in winter. Harengula clupeola occurred mainly in spring, whereas Atherinella brasiliensis peaked in summer and autumn. On the other hand, Trachinotus carolinus, Umbrina coroides and Mugil liza were abundant in winter. Although temperature, salinity and dissolved oxygen were not found to have a strong effect on the abundance patterns of most species, they did appear to have a significant influence on assemblage groupings, according to canonical correspondence analysis and Spearman rank correlation. There is no consistency of diel usage patterns by a given species across seasons. The relative abundance differed between the time of day, which differed among the seasons; this further complicates an understanding of the dynamics of an assemblage. Studies of diel changes that pooled the sampling period as day or night can miss important changes that occur in a short time scale, such as a 3‐h period.</div>
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