Trophic status drives interannual variability in nesting numbers of marine turtles

Broderick, Annette C., Godley, Brendon J. and Hays, Graeme C. 2001, Trophic status drives interannual variability in nesting numbers of marine turtles, Proceedings of the Royal Society B : biological sciences, vol. 268, no. 1475, pp. 1481-1487, doi: 10.1098/rspb.2001.1695.

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Title Trophic status drives interannual variability in nesting numbers of marine turtles
Author(s) Broderick, Annette C.
Godley, Brendon J.
Hays, Graeme C.ORCID iD for Hays, Graeme C.
Journal name Proceedings of the Royal Society B : biological sciences
Volume number 268
Issue number 1475
Start page 1481
End page 1487
Total pages 7
Publisher Royal Society Publishing
Place of publication London, England
Publication date 2001-07-22
ISSN 0962-8452
Keyword(s) marine turtle
trophic status
interannual variation
Summary Large annual fluctuations are seen in breeding numbers in many populations of non–annual breeders. We examined the interannual variation in nesting numbers of populations of green (Chelonia mydas) (n = 16 populations), loggerhead (Caretta caretta) (n =10 populations), leatherback (Dermochelys coriacea) (n = 9 populations) and hawksbill turtles (Eretmochelys imbricata) (n = 10 populations). Interannual variation was greatest in the green turtle. When comparing green and loggerhead turtles nesting in Cyprus we found that green turtles were more likely to change the interval between laying seasons and showed greater variation in the number of clutches laid in a season. We suggest that these differences are driven by the varying trophic statuses of the different species. Green turtles are herbivorous, feeding on sea grasses and macro–algae, and this primary production will be more tightly coupled with prevailing environmental conditions than the carnivorous diet of the loggerhead turtle.
Language eng
DOI 10.1098/rspb.2001.1695
Field of Research 069999 Biological Sciences not elsewhere classified
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2001, Royal Society Publishing
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