Climate
change will affect the population dynamics of many species, yet the
consequences for the long-term persistence of populations are poorly
understood. A major reason for this is that density-dependent feedback effects
caused by fluctuations in population size are considered independent of
stochastic variation in the environment. We show that an interplay between
winter temperature and population density can influence the persistence of a
small passerine population under global warming. Although warmer winters favor
an increased mean population size, density-dependent feedback can cause the
local population to be less buffered against occasional poor environmental
conditions (cold winters). This shows that it is essential to go beyond the
population size and explore climate effects on the full dynamics to elaborate
targeted management actions.
my commentary:
the climate change affect many species. We show that an interplay between winter temperature and population density can influence the persistence under global warming.
Although winters an increased population size, density-dependent, can cause the local population to be less buffered against occasional environmental condit.
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