The habitats of most species have been fragmented by human actions,
isolating small populations that consequently develop genetic
problems. Millions of small, isolated, fragmented populations are
likely suffering from inbreeding depression and loss of genetic
diversity, greatly increasing their risk of extinction. Crossing
between populations is required to reverse these effects, but
managers rarely do so. A key reason for such inaction is that
managers are often advised to manage populations in isolation
whenever molecular genetic methods indicate genetic differences
among them. Following this advice will often doom small populations
to extinction when the habitat fragmentation and genetic
differences were caused by human activities. A paradigm shift is
required whereby evidence of genetic differentiation among
populations is a trigger to ask whether any populations are
suffering genetic problems, and if so, whether they can be rescued
by augmenting gene flow. Consequently, there is now an urgent need
for an authoritative practical guide to facilitate this paradigm
shift in genetic management of fragmented populations.
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My review
Mon, 11 Nov 2019 | Review
by: Susan M.
A fantastic resource for anyone involved in management of fragmented populations.
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