Ecosystem modeling as a framework to convert a multi-disciplinary research approach into a useful model for the Araçá Bay (Brazil)

Angelini, Ronaldo; Contente, Ríguel Feltrin; Rossi-Wongtschowski, Carmem Lúcia Del Bianco; Soares, Lucy Satiko Hashimoto; Schaeffer-Novelli, Yara; Lopes, Rubens M.; Mancini, Patrícia Luciano; Coll, Marta; Amaral, A. Cecília Z.

doi:10.1016/j.ocecoaman.2018.02.007

Cited by 16 publications

(3 citation statements)

References 58 publications

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“…Although our results are likely to have been influenced by seasonal events, they nonetheless highlight the omnivorous diet and opportunistic feeding behaviour of O. minuta; this species is known to be able to shift its diet in response to temporal changes in the environment (Corte et al, 2019). Evidence from stable isotope analysis showing that O. minuta feeds on more than one trophic level (Angelini et al, 2018) also supports the view that this species is an omnivore. A recent study has shown opportunistic suspension feeding in Olivella columellaris with increasing food supply (Morse & Peters, 2016).…”

Section: Discussionsupporting

confidence: 69%

“…In fact, experimental studies show that predation of benthic species may increase significantly during high tide (Esselink & Zwarts, 1989;Wilson, 1989). Olivella minuta is preyed upon by many subtidal and/or nektonic species, such as teleost fishes, rays and starfishes (Denadai et al, 2015;Fernandez et al, 2017;Angelini et al, 2018). Thus, it is logical to assume that when submerged (both in the subtidal and in the intertidal during high tides) this species is under significant pressure from predators.…”

Section: Discussionmentioning

confidence: 99%

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Full stomachs at empty tides: tidal cycle affects feeding activity and diet of the sandy beach gastropod Olivella minuta

Checon

Silva

Corte

et al. 2020

Journal of Molluscan Studies

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Olivella minuta is an abundant neogastropod on sandy beaches from Texas (USA) to southern Brazil. This study aimed to characterize and compare the feeding activity and diet of a Brazilian population of O. minuta in different tidal zones (intertidal and subtidal), and different tidal levels (high and low tides), with three combinations of tidal zone and level being studied (intertidal during low tide, intertidal during high tide and subtidal). The results showed that diet composition was generally similar among tidal conditions, with O. minuta being a generalist, feeding on 45 different food items. Feeding activity, however, was higher in the intertidal during low tide, whereas the richness and diversity of food items were higher in the intertidal during high tide. The higher feeding activity of O. minuta during low tide may be linked to a lower risk of predation; at low tide organisms may be able to feed for a longer time, and this may be particularly true on beaches with fine sand, where water retention is higher than that on beaches with coarse sand. The higher diversity of food items consumed in the intertidal during high tide is likely related to the increased prevalence of planktonic food during high tide. Our results indicate that tidal zone and level may strongly influence the feeding activity of coastal soft-bottom species and that species may show higher feeding activity during low tide. Given the current loss of intertidal habitats due to anthropogenic activity and climate-change associated factors, our study has important implications, highlighting the importance of intertidal areas for the ecology and conservation of sandy beach species.

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Section: Discussionsupporting

confidence: 69%

Section: Discussionmentioning

confidence: 99%

Full stomachs at empty tides: tidal cycle affects feeding activity and diet of the sandy beach gastropod Olivella minuta

Checon

Silva

Corte

et al. 2020

Journal of Molluscan Studies

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“…To southwest, the Santos Port is the largest port in Latin America and the most important industrial hub in Brazil (Luiz-Silva et al, 2002), producing great concentrations of mercury and plastic pellets, that reach adjacent (e.g., Santos Bay) (Siqueira et al, 2005;Ribeiro, 2020) and even farther regions, such as the archipelago. To northwest and closer to Alcatrazes, the São Sebastião Port will be expanded over the Araçá Bay (Angelini et al, 2018), an important nursery place (Contente et al, 2020). Besides the local impacts, its expansion could also affect the vicinities, disturbing the fauna by the carriage of pollutants and increase in underwater noise (Slabbekoorn et al, 2010;Barletta et al, 2016).…”

Section: Oceanographic Features Driving the Community Dynamicsmentioning

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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Food web model to assess the fishing impacts and ecological role of elasmobranchs in a coastal ecosystem of Southern Brazil

Rupp

Bornatowski

2021

Environ Biol Fish

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Ecosystem modeling as a framework to convert a multi-disciplinary research approach into a useful model for the Araçá Bay (Brazil)

Cited by 16 publications

References 58 publications

Full stomachs at empty tides: tidal cycle affects feeding activity and diet of the sandy beach gastropod Olivella minuta

Full stomachs at empty tides: tidal cycle affects feeding activity and diet of the sandy beach gastropod Olivella minuta

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

Food web model to assess the fishing impacts and ecological role of elasmobranchs in a coastal ecosystem of Southern Brazil

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