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. 2012 Oct 5;7(10):e45447. doi: 10.1371/journal.pone.0045447

Table 2. Computation of turtle abundance, survival, and related parameters based on estimates of hatchling production, new recruits, and sex ratios from the literature.

Variable Low Mean High References
Number of hatchlings 41,275 128,031 303,578
Age: 2.7×10−3<t<1 Abundance (t) Nt = 41275e −1.38(t-0.0027) Nt = 128031e −1.38(t-0.0027) Nt = 303578e −1.38(t-0.0027)
Annual survival 0.25 0.25 0.25 [37]
Mortality coefficient yr−1 1.38 1.38 1.38
Number of yearlings 10,425 32,338 76,679
Age: 1<t<16 Abundance (t) Nt = 10425e −0.143(t-1) Nt = 32338e −0.216(t-1) Nt = 76679e −0.296(t-1)
Annual survival 0.87 0.81 0.76
Mortality coefficient yr−1 0.143 0.216 0.271
Number of recruits to adult pop. 1217 1268 1318 [2], [37], [38], [39]
Age: 16<t Abundance (t) Nt = 1217e −0.333(t-16) Nt = 1268e −0.229(t-16) Nt = 1318e −0.177(t-16)
Annual survival 0.72 0.79 0.84
Mortality coefficient yr−1 0.333 0.229 0.177
Total number of adults in pop. 4292 6199 8103