We document a tendency for published estimates of population size in sea turtles to be increasing rather than decreasing across the globe. To examine the population status of the seven species of sea turtle globally, we obtained 299 time series of annual nesting abundance with a total of 4417 annual estimates. The time series ranged in length from 6 to 47 years (mean, 16.2 years). When levels of abundance were summed within regional management units (RMUs) for each species, there were upward trends in 12 RMUs versus downward trends in 5 RMUs. This prevalence of more upward than downward trends was also evident in the individual time series, where we found 95 significant increases in abundance and 35 significant decreases.
Original Source [2]
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Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/global-sea-turtle-conservation-successes
[2] http://advances.sciencemag.org/content/3/9/e1600730
[3] http://admin.indiaenvironmentportal.org.in/category/author/antonios-d-mazaris
[4] http://admin.indiaenvironmentportal.org.in/category/author/gail-schofield
[5] http://admin.indiaenvironmentportal.org.in/category/author/chrysoula-gkazinou-et-al
[6] http://admin.indiaenvironmentportal.org.in/category/journal/science-advances
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/turtles
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/endangered-species
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indian-ocean
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/north-atlantic-ocean
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/migratory-species
