Habitat selection by green turtles in a spatially heterogeneous benthic landscape in Dry Tortugas National Park, Florida

We examined habitat selection by green turtles Chelonia mydas at Dry Tortugas National Park, Florida, USA. We tracked 15 turtles (6 females and 9 males) using platform transmitter terminals (PTTs); 13 of these turtles were equipped with additional acoustic transmitters. Location data by PTTs compris...

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Autores principales:	I Fujisaki, KM Hart, AR Sartain-Iverson
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2016
Materias:	Biology (General) QH301-705.5 Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/96f2185144b742eba0a0b5d28ab88b74
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spelling	oai:doaj.org-article:96f2185144b742eba0a0b5d28ab88b742021-11-18T09:19:13ZHabitat selection by green turtles in a spatially heterogeneous benthic landscape in Dry Tortugas National Park, Florida1864-77821864-779010.3354/ab00647https://doaj.org/article/96f2185144b742eba0a0b5d28ab88b742016-02-01T00:00:00Zhttps://www.int-res.com/abstracts/ab/v24/n3/p185-199/https://doaj.org/toc/1864-7782https://doaj.org/toc/1864-7790We examined habitat selection by green turtles Chelonia mydas at Dry Tortugas National Park, Florida, USA. We tracked 15 turtles (6 females and 9 males) using platform transmitter terminals (PTTs); 13 of these turtles were equipped with additional acoustic transmitters. Location data by PTTs comprised periods of 40 to 226 d in varying months from 2009 to 2012. Core areas were concentrated in shallow water (mean bathymetry depth of 7.7 m) with a comparably dense coverage of seagrass; however, the utilization distribution overlap index indicated a low degree of habitat sharing. The probability of detecting a turtle on an acoustic receiver was inversely associated with the distance from the receiver to turtle capture sites and was lower in shallower water. The estimated daily detection probability of a single turtle at a given acoustic station throughout the acoustic array was small (<0.1 in any year), and that of multiple turtle detections was even smaller. However, the conditional probability of multiple turtle detections, given at least one turtle detection at a receiver, was much higher despite the small number of tagged turtles in each year (n = 1 to 5). Also, multiple detections of different turtles at a receiver frequently occurred within a few minutes (40%, or 164 of 415, occurred within 1 min). Our numerical estimates of core area overlap, co-occupancy probabilities, and habitat characterization for green turtles could be used to guide conservation of the area to sustain the population of this species.I FujisakiKM HartAR Sartain-IversonInter-ResearcharticleBiology (General)QH301-705.5MicrobiologyQR1-502ENAquatic Biology, Vol 24, Iss 3, Pp 185-199 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5 Microbiology QR1-502
spellingShingle	Biology (General) QH301-705.5 Microbiology QR1-502 I Fujisaki KM Hart AR Sartain-Iverson Habitat selection by green turtles in a spatially heterogeneous benthic landscape in Dry Tortugas National Park, Florida
description	We examined habitat selection by green turtles Chelonia mydas at Dry Tortugas National Park, Florida, USA. We tracked 15 turtles (6 females and 9 males) using platform transmitter terminals (PTTs); 13 of these turtles were equipped with additional acoustic transmitters. Location data by PTTs comprised periods of 40 to 226 d in varying months from 2009 to 2012. Core areas were concentrated in shallow water (mean bathymetry depth of 7.7 m) with a comparably dense coverage of seagrass; however, the utilization distribution overlap index indicated a low degree of habitat sharing. The probability of detecting a turtle on an acoustic receiver was inversely associated with the distance from the receiver to turtle capture sites and was lower in shallower water. The estimated daily detection probability of a single turtle at a given acoustic station throughout the acoustic array was small (<0.1 in any year), and that of multiple turtle detections was even smaller. However, the conditional probability of multiple turtle detections, given at least one turtle detection at a receiver, was much higher despite the small number of tagged turtles in each year (n = 1 to 5). Also, multiple detections of different turtles at a receiver frequently occurred within a few minutes (40%, or 164 of 415, occurred within 1 min). Our numerical estimates of core area overlap, co-occupancy probabilities, and habitat characterization for green turtles could be used to guide conservation of the area to sustain the population of this species.
format	article
author	I Fujisaki KM Hart AR Sartain-Iverson
author_facet	I Fujisaki KM Hart AR Sartain-Iverson
author_sort	I Fujisaki
title	Habitat selection by green turtles in a spatially heterogeneous benthic landscape in Dry Tortugas National Park, Florida
title_short	Habitat selection by green turtles in a spatially heterogeneous benthic landscape in Dry Tortugas National Park, Florida
title_full	Habitat selection by green turtles in a spatially heterogeneous benthic landscape in Dry Tortugas National Park, Florida
title_fullStr	Habitat selection by green turtles in a spatially heterogeneous benthic landscape in Dry Tortugas National Park, Florida
title_full_unstemmed	Habitat selection by green turtles in a spatially heterogeneous benthic landscape in Dry Tortugas National Park, Florida
title_sort	habitat selection by green turtles in a spatially heterogeneous benthic landscape in dry tortugas national park, florida
publisher	Inter-Research
publishDate	2016
url	https://doaj.org/article/96f2185144b742eba0a0b5d28ab88b74
work_keys_str_mv	AT ifujisaki habitatselectionbygreenturtlesinaspatiallyheterogeneousbenthiclandscapeindrytortugasnationalparkflorida AT kmhart habitatselectionbygreenturtlesinaspatiallyheterogeneousbenthiclandscapeindrytortugasnationalparkflorida AT arsartainiverson habitatselectionbygreenturtlesinaspatiallyheterogeneousbenthiclandscapeindrytortugasnationalparkflorida
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Habitat selection by green turtles in a spatially heterogeneous benthic landscape in Dry Tortugas National Park, Florida

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