Effective population size and genetic conservation criteria for bull trout b e rieman us department of agriculture forest service rocky mountain research station 316 east myrtle boise idaho 83702 usa f w a llendorf division of biological sciences university of montana missoula montana 59812 usa. The swamp rabbit sylvilagus aquaticus is a blh specialist distributed throughout the lmav and may be an appropriate indicator species for this ecosystemswamp rabbits are associated with forested wetland habitats that encompass a range of attributes associated with a structurally diverse blh forest. The viability of the population was investigated using the stochastic population modeling program vortex 999 demographic parameters used to set the pva models were taken from the literature or were estimated for our study population pop ecol 52 527 536 54 wauters la preatoni d martinoli a verbeylen g matthysen e 2011 no sex . Now we can implement the famine condition open the equation editor window for death rate click on the equals sign and type the following if humanslimit then 001 else 099 end if you dont actually need to type this all in you can just click on programming functions in the equation editor and select if then else from the options. Population viability analysis pva is a collection of meth ods for evaluating the threats faced by species their risks of extinction or decline and their chances for recovery based on species specific data and models boyce 1992 burgman et al 1993 akcakaya et al 1999 there is a wide range of
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