scholarly journals Home range of green turtles Chelonia mydas at a coastal foraging area in the Gulf of California, Mexico

2002 ◽  
Vol 242 ◽  
pp. 253-265 ◽  
Author(s):  
JA Seminoff ◽  
A Resendiz ◽  
WJ Nichols
Keyword(s):  
Home Range ◽  
Gulf Of California ◽  
Chelonia Mydas ◽  
Green Turtles ◽  
Foraging Area

Growth Rates of Wild Green Turtles (Chelonia mydas) at a Temperate Foraging Area in the Gulf of California, México

Copeia ◽  
2002 ◽  
Vol 2002 (3) ◽  
pp. 610-617 ◽  
Author(s):  
Jeffrey A. Seminoff ◽  
Antonio Resendiz ◽  
Wallace J. Nichols ◽  
T. Todd Jones
Keyword(s):  
Growth Rates ◽  
Gulf Of California ◽  
Chelonia Mydas ◽  
Green Turtles ◽  
Foraging Area

Monitoring green turtles (Chelonia mydas) at a coastal foraging area in Baja California, Mexico: multiple indices to describe population status

2003 ◽  
Vol 83 (6) ◽  
pp. 1355-1362 ◽  
Author(s):  
Jeffrey A. Seminoff ◽  
T. Todd Jones ◽  
Antonio Resendiz ◽  
Wallace J. Nichols ◽  
Milani Y. Chaloupka
Keyword(s):  
Los Angeles ◽  
Gulf Of California ◽  
Human Impacts ◽  
Chelonia Mydas ◽  
Sea Turtle ◽  
Catch Per Unit Effort ◽  
Recovery Model ◽  
Size Frequency Distribution ◽  
Green Turtles ◽  
Foraging Area

From June 1995 to August 2002 we assessed green turtle (Chelonia mydas) population structure and survival, and identified human impacts at Bahía de los Angeles, a large bay that was once the site of the greatest sea turtle harvest rates in the Gulf of California, Mexico. Turtles were captured live with entanglement nets and mortality was quantified through stranding surveys and flipper tag recoveries. A total of 14,820 netting hours (617·5 d) resulted in 255 captures of 200 green turtles. Straight-carapace length and mass ranged from 46·0–100·0 cm (mean=74·3±0·7 cm) and 14·5–145·0 kg (mean=61·5±1·7 kg), respectively. The size–frequency distribution remained stable during all years and among all capture locations. Anthropogenic-derived injuries ranging from missing flippers to boat propeller scars were present in 4% of captured turtles. Remains of 18 turtles were found at dumpsites, nine stranded turtles were encountered in the study area, and flipper tags from seven turtles were recovered. Survival was estimated at 0·58 for juveniles and 0·97 for adults using a joint live-recapture and dead-recovery model (Burnham model). Low survival among juveniles, declining annual catch per unit effort, and the presence of butchered carcasses indicated human activities continue to impact green turtles at this foraging area.

scholarly journals Home range and habitat use of juvenile green turtles (Chelonia mydas) in the northern Gulf of Mexico

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
Margaret M. Lamont ◽  
Ikuko Fujisaki ◽  
Brail S. Stephens ◽  
Caitlin Hackett
Keyword(s):  
Home Range ◽  
Gulf Of Mexico ◽  
Habitat Use ◽  
Chelonia Mydas ◽  
Northern Gulf Of Mexico ◽  
Green Turtles

Home range and habitat use of juvenile Atlantic green turtles (Chelonia mydas L.) on shallow reef habitats in Palm Beach, Florida, USA

2005 ◽  
Vol 148 (5) ◽  
pp. 1167-1179 ◽  
Author(s):  
Christopher Makowski ◽  
Jeffrey A. Seminoff ◽  
Michael Salmon
Keyword(s):  
Home Range ◽  
Habitat Use ◽  
Chelonia Mydas ◽  
Shallow Reef ◽  
Green Turtles

Diet of East Pacific Green Turtles (Chelonia mydas) in the Central Gulf of California, México

2002 ◽  
Vol 36 (3) ◽  
pp. 447-453 ◽  
Author(s):  
Jeffrey A. Seminoff ◽  
Antonio Resendiz ◽  
Wallace J. Nichols
Keyword(s):  
Gulf Of California ◽  
Chelonia Mydas ◽  
Green Turtles ◽  
East Pacific

scholarly journals Effects of a power plant closure on home ranges of green turtles in an urban foraging area

2020 ◽  
Vol 41 ◽  
pp. 265-277 ◽  
Author(s):  
T Eguchi ◽  
J Bredvik ◽  
S Graham ◽  
R LeRoux ◽  
B Saunders ◽  
...  
Keyword(s):  
Power Plant ◽  
Green Turtle ◽  
Chelonia Mydas ◽  
Home Ranges ◽  
Utilization Distribution ◽  
Green Turtles ◽  
Foraging Area ◽  
San Diego Bay ◽  
Conservation Actions ◽  
Satellite Transmitters

A natural experiment was conducted to determine effects of a fossil-fueled power plant on home ranges of east Pacific green turtles Chelonia mydas in an urban foraging ground. The power plant, located in south San Diego Bay, California, USA, co-existed with a resident foraging aggregation of ~60 green turtles for ~50 yr. It was decommissioned during a long-term green turtle monitoring study, thus providing a rare opportunity to evaluate how the cessation of warm-water effluent affected turtle movements and habitat use in the area. During pre- and post-decommissioning of the power plant, 7 and 23 green turtles, respectively, were equipped with GPS-enabled satellite transmitters. Useful data were obtained from 17 turtles (4 for pre- and 13 for post-decommissioning). Core use areas (50% utilization distribution [UD]) increased from 0.71 to 1.37 km2 after the power plant decommissioning. Increase in post-power plant 50% UD was greater during nighttime (0.52 to 1.44 km2) than daytime (1.32 to 1.43 km2). Furthermore, UDs moved from the effluent channel to an area closer to seagrass pastures, a presumed foraging habitat of the turtles. The observed expansion of green turtle home ranges may increase turtle-human interactions, such as boat strikes, within the foraging ground; this underscores how seemingly innocuous human actions contribute to inadvertent consequences to wildlife. Possible management and conservation actions include increasing awareness of the public regarding turtle presence in the area through signage and education as well as legislating for a reduction in boat speeds in select areas of the bay.

No rest for the weary: restricted resting behaviour of green turtles (Chelonia mydas) at a deep-neritic foraging area influences expression of life history traits

2020 ◽  
Vol 54 (45-46) ◽  
pp. 2979-3001
Author(s):  
Jeffrey A. Seminoff ◽  
Elizabeth R. Whitman ◽  
Bryan P. Wallace ◽  
Ali Bayless ◽  
Antonio Resendiz ◽  
...  
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Chelonia Mydas ◽  
Green Turtles ◽  
Resting Behaviour ◽  
Foraging Area

Residency, home range and tidal habitat use of Green Turtles (Chelonia mydas) in Port Curtis, Australia

2021 ◽  
Vol 168 (6) ◽  
Author(s):  
Richard D. Pillans ◽  
Gary C. Fry ◽  
Michael D. E. Haywood ◽  
Wayne Rochester ◽  
Colin J. Limpus ◽  
...  
Keyword(s):  
Home Range ◽  
Habitat Use ◽  
Chelonia Mydas ◽  
Green Turtles
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