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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Improving the characterization of fish assemblage structure through the use of multiple sampling methods: a case study in a subtropical tidal flat ecosystem

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Contente, Riguel Feltrin ; Del Bianco Rossi-Wongtschowski, Carmen Lucia
Total Authors: 2
Document type: Journal article
Web of Science Citations: 4

The use of multiple sampling gears is indispensible to obtain robust characterizations of fish assemblage structure in species-rich subtropical ecosystems. In this study, such a dependence was demonstrated by characterizing the structure of the high-tide fish assemblage in a subtropical tidal flat ecosystem (the Araca Bay, southeastern Brazil) using eight different gears along five seasonal surveys and estimating the bay's fish species richness, combining these data with those from local tide pool fish surveys. The high-tide fish assemblage was spatially structured, contained five threatened species, and was dominated by persistent and large populations of Eucinostomus argenteus and of the fisheries species Mugil curema and Diapterus rhombeus that intensively use the bay throughout their life cycles. Large, small-bodied fish populations supported a regular use of the bay by piscivores. The autumn-winter peak in abundance of juvenile fishes caused a subsequent increase in piscivore abundance, and both events explained the bulk of the seasonal variability of the fish assemblage. The estimated richness revealed that the combination of sampling methods was enough for sampling the bulk of the local richness, and the bay may hold a surprisingly high richness compared to other costal ecosystem of the region. This faunal characterization, only viable using multiple gears, will be critical to support the implementation of a future study to monitor the impacts on local fish biodiversity of an imminent port expansion over the tidal flat. (AU)

FAPESP's process: 11/50317-5 - Biodiversity and functioning of a subtropical coastal ecosystem: a contribution to integrated management
Grantee:Antonia Cecília Zacagnini Amaral
Support type: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 13/19435-7 - Characterization of ecological patterns of the ichthyofauna of Bay of Araçá (Southeastern Brazilian coast) through the complementarity among analytical methods and samplers
Grantee:Ríguel Feltrin Contente
Support type: Scholarships in Brazil - Post-Doctorate