scholarly journals Quaternary morphology and paleoenvironmental records of carbonate islands

2014 ◽  
Author(s):  
Michael R. Toomey
Keyword(s):  
Carbonate Islands

scholarly journals Influence of quaternary sea-level variations on a land bird endemic to Pacific atolls

2010 ◽  
Vol 277 (1699) ◽  
pp. 3445-3451 ◽  
Author(s):  
Alice Cibois ◽  
Jean-Claude Thibault ◽  
Eric Pasquet
Keyword(s):  
Sea Level ◽  
Current Trend ◽  
Conservation Priorities ◽  
Last Interglacial ◽  
Quaternary Climate ◽  
The Pacific ◽  
Carbonate Islands ◽  
History Of ◽  
The Pacific Ocean ◽  
Land Bird

Little is known about the effect of quaternary climate variations on organisms that inhabited carbonate islands of the Pacific Ocean, although it has been suggested that one or several uplifted islands provided shelter for terrestrial birds when sea-level reached its highest. To test this hypothesis, we investigated the history of colonization of the Tuamotu reed-warbler ( Acrocephalus atyphus ) in southeastern Polynesia, and found high genetic structure between the populations of three elevated carbonate islands. Estimates of time since divergence support the hypothesis that these islands acted as refugia during the last interglacial maximum. These findings are particularly important for defining conservation priorities on atolls that endure the current trend of sea-level rise owing to global warming.

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