Using the adult survival estimates derived from radiomarked
male B. variegatus (for which estimates of true
and local survival were equivalent), we estimated that
k = 0937 (SE = 0030) and 0936 (SE = 0029) when
AFB = 2 and 3 years, respectively. The upper 95% confi-
dence limit was below 10 regardless of AFB, indicating
a statistically significant decline in the absence of immigration.
Point estimates of k increased linearly with
potential immigration rates, but did not reach 10 when
annual immigration was 010, regardless of AFB
(Fig. 4a).
Using the estimate of true adult survival derived from
radiomarked male C. hoffmanni, we estimated that
k = 1077 (SE = 0053) and 1050 (SE = 0043) for this
species assuming AFB = 25 and 35 years, respectively.
Using the estimate of local adult survival that discounted
the dispersing male, we estimated that k = 1062
(SE = 0052) and 1034 (SE = 0042) for C. hoffmanni
assuming AFB = 25 and 35 years, respectively. Point
estimates of k derived using local survival increased linearly
with potential immigration rates and reached 1159
and 1117 when AFB = 25 and 35 years, respectively
(Fig. 4b).