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Provedor de dados:  ArchiMer
País:  France
Título:  Contrasted habitats and individual plasticity drive the fine scale movements of juvenile green turtles in coastal ecosystems
Autores:  Chambault, Philippine
Dalleau, Mayeul
Nicet, Jean-benoit
Mouquet, Pascal
Ballorain, Katia
Jean, Claire
Ciccione, Stéphane
Bourjea, Jerome
Data:  2020-01
Ano:  2020
Palavras-chave:  Chelonia mydas
Home range
Satellite tracking
Diel pattern
Tidal cycle
Resumo:  Background A strong behavioural plasticity is commonly evidenced in the movements of marine megafauna species, and it might be related to an adaptation to local conditions of the habitat. One way to investigate such behavioural plasticity is to satellite track a large number of individuals from contrasting foraging grounds, but despite recent advances in satellite telemetry techniques, such studies are still very limited in sea turtles. Methods From 2010 to 2018, 49 juvenile green turtles were satellite tracked from five contrasting feeding grounds located in the South-West Indian Ocean in order to (1) assess the diel patterns in their movements, (2) investigate the inter-individual and inter-site variability, and (3) explore the drivers of their daily movements using both static (habitat type and bathymetry) and dynamic variables (daily and tidal cycles). Results Despite similarities observed in four feeding grounds (a diel pattern with a decreased distance to shore and smaller home ranges at night), contrasted habitats (e.g. mangrove, reef flat, fore-reef, terrace) associated with different resources (coral, seagrass, algae) were used in each island. Conclusions Juvenile green turtles in the South-West Indian Ocean show different responses to contrasting environmental conditions - both natural (habitat type and tidal cycle) and anthropogenic (urbanised vs. uninhabited island) demonstrating the ability to adapt to modification of habitat.
Tipo:  Text
Idioma:  Inglês

Editor:  Springer
Formato:  application/pdf
Fonte:  Movement Ecology (2051-3933) (Springer), 2020-01 , Vol. 8 , N. 1 , P. 15p.
Direitos:  info:eu-repo/semantics/openAccess

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