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Inter-island nesting dynamics and clutch survival of green turtles Chelonia mydas within a marine protected area in the Bijagós Archipelago, West Africa

2024Journal article Open access
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dc.contributor.authorRaposo, Cheila
dc.contributor.authorR., Rebelo
dc.contributor.authorCatry, Paulo
dc.contributor.authorFerreira-Airaud, Betania
dc.contributor.authorBarbosa, Castro
dc.contributor.authorGarcia, Tumbulo Bamba
dc.contributor.authorRegalla De Barros, Aissa
dc.contributor.authorSá Sampaio, Manuel
dc.contributor.authorPatrício, Ana Rita
dc.date.accessioned2024-07-05T17:11:24Z
dc.date.available2024-07-05T17:11:24Z
dc.date.issued2024
dc.description.abstractUnderstanding spatial heterogeneity in reproductive success among at-risk populations facing localised threats is key for conservation. Sea turtle populations often concentrate at one nesting site, diverting conservation efforts from adjacent smaller rookeries. Poilão Island, Bijagós Archipelago, Guinea-Bissau, is a notable rookery for green turtles Chelonia mydas within the João Vieira-Poilão Marine National Park, surrounded by three islands (Cavalos, Meio and João Vieira), with lower nesting activity. Poilão’s nesting suitability may decrease due to turtle population growth and sea level rise, exacerbating already high nest density. As the potential usage of secondary sites may arise, we assessed green turtle clutch survival and related threats in Poilão and its neighbouring islands. High nest density on Poilão leads to high clutch destruction by later turtles, resulting in surplus eggs on the beach surface and consequently low clutch predation (4.0%, n = 69, 2000). Here, the overall mean hatching success estimated was 67.9 ± 36.7% (n = 631, 2015–2022), contrasting with a significantly lower value on Meio in 2019 (11.9 ± 23.6%, n = 21), where clutch predation was high (83.7%, n = 98). Moderate to high clutch predation was also observed on Cavalos (36.0%, n = 64) and João Vieira (76.0%, n = 175). Cavalos and Meio likely face higher clutch flooding compared to Poilão. These findings, alongside observations of turtle exchanges between islands, may suggest a source-sink dynamic, where low reproductive output sink habitats (neighbouring islands) are utilized by migrants from Poilão (source), which currently offers the best conditions for clutch survival.pt_PT
dc.description.sponsorshipFundação para a Ciência e Tecnologia - FCTpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRaposo, C., Catry, P., Patrício, A. R., Rebelo, R., Sampaio, M. S., Ferreira-Airaud, M. B., Barbosa, C., Garcia, T. B., & Regalla, A. (2024). Inter-island nesting dynamics and clutch survival of green turtles Chelonia mydas within a marine protected area in the Bijagós Archipelago, West Africa. Marine Biology, 171(7). https://doi.org/10.1007/s00227-024-04463-wpt_PT
dc.identifier.doi10.1007/s00227-024-04463-wpt_PT
dc.identifier.issn14321793
dc.identifier.urihttp://hdl.handle.net/10400.12/9833
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Verlagpt_PT
dc.relationLCF/BQ/PR20/11770003pt_PT
dc.relationUIDB/04292/2020pt_PT
dc.relationUIDP/04292/2020pt_PT
dc.relationLA/P/0069/2020pt_PT
dc.relationUIDB/00329/2020pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSea turtlept_PT
dc.subjectClutch survivalpt_PT
dc.subjectSuitable nesting sitept_PT
dc.subjectInter-island linkagespt_PT
dc.subjectPredationpt_PT
dc.subjectFloodingpt_PT
dc.titleInter-island nesting dynamics and clutch survival of green turtles Chelonia mydas within a marine protected area in the Bijagós Archipelago, West Africapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceGermanypt_PT
oaire.citation.endPage15pt_PT
oaire.citation.issue7pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleMarine Biologypt_PT
oaire.citation.volume171pt_PT
person.familyNameFerreira Raposo
person.familyNameRebelo
person.familyNameCatry
person.familyNameFerreira-Airaud
person.familyNameRegalla de Barros
person.familyNameArauz de Sá Sampaio
person.familyNameRita Caldas Patrício
person.givenNameCheila Sofia
person.givenNameRui
person.givenNamePaulo
person.givenNameBetânia
person.givenNameAissa
person.givenNameManuel Maria
person.givenNameAna
person.identifierUzxAncYAAAAJ
person.identifier1916224
person.identifierhttps://scholar.google.com/citations?hl=en&user=o1nl2oYAAAAJ
person.identifierB-3437-2019
person.identifier.ciencia-id9E1E-A452-791E
person.identifier.ciencia-id651A-9349-61EF
person.identifier.ciencia-idEF1A-6A4A-013A
person.identifier.ciencia-id6A1E-DF94-1775
person.identifier.ciencia-id8D15-F799-1252
person.identifier.orcid0000-0002-1674-0017
person.identifier.orcid0000-0003-2544-1470
person.identifier.orcid0000-0003-3000-0522
person.identifier.orcid0000-0002-2874-1367
person.identifier.orcid0000-0003-1522-8211
person.identifier.orcid0000-0001-6101-7883
person.identifier.orcid0000-0003-4963-2343
person.identifier.ridD-7054-2013
person.identifier.ridI-5408-2013
person.identifier.scopus-author-id13907587200
person.identifier.scopus-author-id7003725276
person.identifier.scopus-author-id53981714800
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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