Marine protected areas: Their potential for the conservation of the franciscana

Ott, Paulo Henrique; Tullio, Juliana Di; Prado, Jonatas Henrique; Danilewicz, Daniel; Passadore, Cecilia; Failla, Mauricio; Bessega, Miguel Iñíguez; Rodríguez, Diego H.

doi:10.1016/b978-0-323-90974-7.00005-7

Cited by 3 publications

(2 citation statements)

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“…Data derived from the analysis of stranding franciscana carcasses (Rupil et al 2019, Mayorga et al 2020, de Oliveira-Ferreira et al 2022 as well as from drone and acoustic monitoring (Giacomo et al 2021, Amorim et al 2022) also indicate a high concentration of franciscanas in the vicinity of the Doce River estuary mouth. These findings reinforce the critical significance of this area for the conservation of the FMA Ia population and corroborate the recognized importance of the establishment of a marine protected area in this region (ICMBio 2019, Ott et al 2022, IUCN-MMPATF 2023, IWC 2023.…”

Section: Discussionsupporting

confidence: 83%

Distribution, population size and IUCN Red Listing of an isolated population of the threatened franciscana

Sucunza¹,

Danilewicz²,

Ott³

et al. 2023

Endang. Species. Res.

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The franciscana Pontoporia blainvillei is the only extant member of the family Pontoporiidae, and its occurrence is restricted to coastal waters from Brazil to Argentina. The species is one of the most threatened cetaceans in the southwestern Atlantic Ocean, due to unsustainable bycatch levels. A total of 11 Franciscana Management Areas (FMAs) have been defined throughout the species’ range. FMA Ia represents the northernmost franciscana population, demographically isolated on the north coast of Espírito Santo State, Brazil. In March 2018, aerial surveys were conducted to assess the distribution and estimate the abundance of franciscanas in FMA Ia. A total of 2986 km of survey effort was conducted, and 27 groups were seen (average group size: 2.52 ind., coefficient of variation [CV] = 0.50) in coastal habitats (average distance from the shore: 3.3 km, CV = 0.70). Abundance, corrected for visibility bias and group size bias, was estimated at 1183 (CV = 0.76) individuals, and the potential biological removal was computed at 1. Results suggest that at least during the summer, franciscanas in ES are distributed in coastal habitats between Conceição da Barra and Santa Cruz, with a high-density area observed near the estuary mouth of the Doce River. This is one of the smallest of all franciscana populations and one with a restricted range. The estimated abundance indicates that the ES population qualifies for listing as Endangered under IUCN Red List criterion C2a(ii). In order to reduce threats to this population, management actions are urgently needed.

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Section: Discussionsupporting

confidence: 83%

Distribution, population size and IUCN Red Listing of an isolated population of the threatened franciscana

Sucunza¹,

Danilewicz²,

Ott³

et al. 2023

Endang. Species. Res.

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“…Thirty-four Units of Conservation (UC) across franciscana distribution in Brazil have been identified, although an update of their effective overlapping distribution resulted in only 25 marine protected areas (Ott et al, 2022), most of them in FMA II. This updated analysis also revealed the existence of 44 marine protected areas across the three countries where the species is distributed, with the highest number in Brazil.…”

Section: Update From Argentina Brazil and Uruguaymentioning

confidence: 99%

Report of the Workshop to Finalise the Review of the Franciscana (Curitiba, Brazil, 4-5 June 2022)

2023

JCRM

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From narrow and overlapped to wide and segregated: The isotopic niche of a tropical cetacean community

Neves

Vannuci-Silva

Montanini

et al. 2023

Ecological Indicators

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Marine protected areas: Their potential for the conservation of the franciscana

Cited by 3 publications

References 50 publications

Distribution, population size and IUCN Red Listing of an isolated population of the threatened franciscana

Distribution, population size and IUCN Red Listing of an isolated population of the threatened franciscana

Report of the Workshop to Finalise the Review of the Franciscana (Curitiba, Brazil, 4-5 June 2022)

From narrow and overlapped to wide and segregated: The isotopic niche of a tropical cetacean community

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