Integridade biótica dos ecossistemas na região do Arquipélago dos Alcatrazes, São Sebastião - SP

Hoff, Natasha Travenisk

doi:10.11606/d.21.2015.tde-22092015-135056

Cited by 2 publications

(3 citation statements)

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“…However, for elasmobranchs, especially the demersal species, the relationship of local species with environmental features is unknown and available information is restricted to community studies that focus mainly in actinopterygians. Approximately seventeen elasmobranch species are reported in the area (Hoff, 2015;ICMBio, 2017;Rolim et al, 2019), which exhibit differences in feeding and reproductive strategies, and behavioral ecology (Lessa et al, 1986;Soares et al, 1992;Vögler et al, 2003;Vooren and Klippel, 2005;Aguiar and Valentin, 2010), highlighting the variety of roles that the WRA and TES MPAs may play according to habitat use by the species.…”

Section: Introductionmentioning

confidence: 99%

Functionality and Effectiveness of Marine Protected Areas in Southeastern Brazilian Waters for Demersal Elasmobranchs

et al. 2021

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Ensuring the efficacy of Marine Protected Areas (MPAs) requires that adequate management strategies be implemented according to the MPA’s objectives. Within the scope of species conservation, achieving MPA objectives demands understanding of the role played by MPAs for the target species. In 2014, Brazilian stakeholders and experts set the action plan for elasmobranchs’ conservation, which intended to create new protected areas and expand the existing ones. Nevertheless, more than 65% of Brazilian elasmobranch species are threatened by anthropogenic pressures such as fisheries and habitat loss. In addition, their ecological aspects are not well studied, which might jeopardize the success of the proposed actions. To assess the functionality and effectiveness of two no-take MPAs for sixteen demersal species, the Wildlife Refuge of Alcatrazes (WRA) and the Tupinambás Ecological Station (TES), we evaluated the community structure, space-time variations in functional diversity and changes in fishery indicators. Community dynamics were driven by inshore intrusion and time persistent effects of a cold and nutrient-rich water mass, the South Atlantic Central Water, which increased the relative abundance of species, functional groups, and overall diversity. Spatially, the heterogeneity of benthic habitats, due to the action of stronger waves in specific parts of the MPAs, reflects a diverse community of benthic invertebrates, explaining differences in relative abundance and similarities in space use by the functional groups. Regarding effectiveness, the MPAs make up a key network with the surrounding protection areas to support the ecosystem maintenance on the central and northern coast of the São Paulo state. The establishment of the TES has positively influenced the community throughout the years while the recent creation of the WRA may have promoted some improvements in fisheries indicators for a threatened guitarfish. We propose different functions of the Alcatrazes archipelago for each species and suggest some measures to enhance not only elasmobranch conservation but also the MPAs’ effectiveness.

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Section: Introductionmentioning

confidence: 99%

Functionality and Effectiveness of Marine Protected Areas in Southeastern Brazilian Waters for Demersal Elasmobranchs

et al. 2021

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“…Likewise, spatial differences between angel sharks were probably related to the resource distribution. Abundance of infauna invertebrates (e.g., polychaetes), may be higher in the northwest part due to sediment composition and higher levels of organic matter (Hoff et al, 2015). Thus, whereas S. guggenheim are strictly piscivorous, eating demersal and pelagic species , the S. occulta diet, which consists of polychaetes and nematodes, relies on configurations of benthic habitats Domingos et al, 2021).…”

Section: Oceanographic Features Driving the Community Dynamicsmentioning

confidence: 99%

“…Approximately seventeen elasmobranch species are reported in the area (Hoff, 2015;ICMBio, 2017;), which exhibit differences in feeding and reproductive strategies, and behavioral ecology , highlighting the variety of roles that the WRA and TES MPAs may play according to habitat use by the species.…”

Section: Introductionmentioning

confidence: 99%

Inputs for demersal elasmobranch conservation: Marine Protected Areas and coastal regions in focus

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Integridade biótica dos ecossistemas na região do Arquipélago dos Alcatrazes, São Sebastião - SP

Cited by 2 publications

References 50 publications

Functionality and Effectiveness of Marine Protected Areas in Southeastern Brazilian Waters for Demersal Elasmobranchs

Functionality and Effectiveness of Marine Protected Areas in Southeastern Brazilian Waters for Demersal Elasmobranchs

Inputs for demersal elasmobranch conservation: Marine Protected Areas and coastal regions in focus

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