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Assessing population parameters and trends of Guiana dolphins (Sotalia guianensis ) : An eight-year mark-recapture study

Assessing population parameters and trends of Guiana dolphins (Sotalia guianensis ) : An eight-year mark-recapture study

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CANTOR, Mauricio, Leonardo L. WEDEKIN, Fábio G. DAURA-JORGE, Marcos R. ROSSI-SANTOS, Paulo C. SIMÕES-LOPES, 2012. Assessing population parameters and trends of Guiana dolphins (Sotalia guianensis ) : An eight-year mark-recapture study. In: Marine Mammal Science. Wiley-Blackwell. 28(1), pp. 63-83. ISSN 1748-7692. eISSN 0824-0469. Available under: doi: 10.1111/j.1748-7692.2010.00456.x

@article{Cantor2012-01Asses-50152, title={Assessing population parameters and trends of Guiana dolphins (Sotalia guianensis ) : An eight-year mark-recapture study}, year={2012}, doi={10.1111/j.1748-7692.2010.00456.x}, number={1}, volume={28}, issn={1748-7692}, journal={Marine Mammal Science}, pages={63--83}, author={Cantor, Mauricio and Wedekin, Leonardo L. and Daura-Jorge, Fábio G. and Rossi-Santos, Marcos R. and Simões-Lopes, Paulo C.} }

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/50152"> <dc:contributor>Rossi-Santos, Marcos R.</dc:contributor> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-07-07T11:23:29Z</dc:date> <dc:contributor>Cantor, Mauricio</dc:contributor> <dcterms:issued>2012-01</dcterms:issued> <dcterms:title>Assessing population parameters and trends of Guiana dolphins (Sotalia guianensis ) : An eight-year mark-recapture study</dcterms:title> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/28"/> <dc:creator>Cantor, Mauricio</dc:creator> <dc:rights>terms-of-use</dc:rights> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/50152"/> <dc:creator>Daura-Jorge, Fábio G.</dc:creator> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/28"/> <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-07-07T11:23:29Z</dcterms:available> <dcterms:abstract xml:lang="eng">This study represents the first attempt to study the population dynamics of Guiana dolphins (Sotalia guianensis ), by evaluating a set of demographic parameters. The population of the Caravelas River estuary, eastern Brazil, was systematically monitored through a long‐term mark‐recapture experiment (2002–2009). Abundance estimates revealed a small population (57–124 dolphins), comprised of resident dolphins and individuals that temporarily leave or pass through the study area. Temporary emigration from the estuary to adjacencies (γ″= 0.33 ± 0.07 SE) and return rate (1 −γ′= 0 .67) were moderate and constant, indicating that some dolphins use larger areas. Survival rate (ϕ= 0.88 ± 0.07 SE) and abundance were constant throughout the study period. Power analysis showed that the current monitoring effort has high probability of detecting abrupt population declines (1 −β= 0.9). Although the monitoring is not yet sensitive to subtle population trends, sufficient time to identify them is feasible (additional 3 yr). Despite such apparent stability, this population, as many others, inhabits waters exposed to multiple human‐related threats. Open and closed population modeling applied to photo‐identification data provide a robust baseline for estimating several demographic parameters and can be applied to other populations to allow further comparisons. Such synergistic efforts will allow a reliable definition of conservation status of this species.</dcterms:abstract> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:creator>Wedekin, Leonardo L.</dc:creator> <dc:creator>Rossi-Santos, Marcos R.</dc:creator> <dc:creator>Simões-Lopes, Paulo C.</dc:creator> <dc:contributor>Simões-Lopes, Paulo C.</dc:contributor> <dc:contributor>Daura-Jorge, Fábio G.</dc:contributor> <dc:language>eng</dc:language> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:contributor>Wedekin, Leonardo L.</dc:contributor> </rdf:Description> </rdf:RDF>

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