期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 112, 期 44, 页码 E5963-E5971出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1516490112
关键词
vertebrates; fossils; island; extinction; Pleistocene
资金
- National Science Foundation [BCS-1118340, BCS-1118369, GSS-1461496]
- National Geographic Society [EC0372-08]
- University of Florida Ornithology Endowment
- Theodore Roosevelt Postdoctoral Fellowship at the American Museum of Natural History
- Gerstner Scholar Postdoctoral Fellowship at the American Museum of Natural History
- Direct For Social, Behav & Economic Scie
- Division Of Behavioral and Cognitive Sci [1118340, 1461496] Funding Source: National Science Foundation
- Division Of Behavioral and Cognitive Sci
- Direct For Social, Behav & Economic Scie [1118369] Funding Source: National Science Foundation
We report 95 vertebrate taxa (13 fishes, 11 reptiles, 63 birds, 8 mammals) from late Pleistocene bone deposits in Sawmill Sink, Abaco, The Bahamas. The >5,000 fossils were recovered by scuba divers on ledges at depths of 27-35 m below sea level. Of the 95 species, 39 (41%) no longer occur on Abaco (4 reptiles, 31 birds, 4 mammals). We estimate that 17 of the 39 losses (all of them birds) are linked to changes during the Pleistocene-Holocene Transition (PHT) (similar to 15-9 ka) in climate (becoming more warm and moist), habitat (expansion of broadleaf forest at the expense of pine wood-land), sea level (rising from -80 m to nearly modern levels), and island area (receding from similar to 17,000 km(2) to 1,214 km(2)). The remaining 22 losses likely are related to the presence of humans on Abaco for the past 1,000 y. Thus, the late Holocene arrival of people probably depleted more populations than the dramatic physical and biological changes associated with the PHT.
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