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Old Yesterday, 08:55 AM
 
21,299 posts, read 16,399,591 times
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This is good news about the green sea turtle. I wish there was equally good news for so many other endangered species. But I'll take what I can get.

''Beleaguered populations of green sea turtles living in and around Hawaii and American Pacific island territories are increasing in number.

From 2002 to 2015, scuba diving researchers circumnavigated 53 islands, atolls and coral reefs throughout the U.S. Pacific, conducting the first comprehensive survey in that region of the turtles’ ocean habitats. Over the 13 years, the divers counted more than 3,400 sea turtles. The vast majority — 90.1 percent — were green sea turtles; only 8.3 percent were hawksbills and 1.6 percent were unidentified.''


Read more: https://www.sciencenews.org/article/...ack-us-pacific
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Old Today, 04:18 AM
 
Location: The Driftless Area, WI
2,750 posts, read 969,627 times
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Certainly could be good news-- but you gotta remain skeptical. Population studies are fraught with inaccuracies. Although I'm a GW skeptic, it's easy to see the error in the polar bear studies that claim populations grew from 5000 in the 70s to 25000 now-- better techniques to track the bears and growing population of humans in the area makes contact more likely, etc probably account for the difference, not some new biological factor causing growth.


Another factor that needs to be considered is natural population fluctuations inherent in the species-- the 17 yr cicada is an extreme example. I doubt they have any kind of a handle on that for turtles at all.


Loss of habitat due to increasing human encroachment on beaches where turtles lay eggs has gotta be the number one factor affecting sea turtle populations. Pollution & climate certainly have minimal effect, although some species vary their fecundity according to weather conditions: oak trees, for instance, produce bumper crops of acorns only every 3-5 yrs depending on temp & moisture conditions.
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