Martens and Fishers (Martes) in Human-Altered Environments: An
International Perspective examines the conditions where humans and
martens are compatible and incompatible, and promotes land use
practices that allow Martes to be representatively distributed and
viable.
All Martes have been documented to use forested habitats and 6
species (excluding the stone marten) are generally considered to
require complex mid- to late-successional forests throughout much
of their geographic ranges. All species in the genus require
complex horizontal and vertical structure to provide escape cover
protection from predators, habitat for their prey, access to food
resources, and protection from the elements. Martens and the fisher
have high metabolic rates, have large spatial requirements, have
high surface area to volume ratios for animals that often inhabit
high latitudes, and often require among the largest home range
areas per unit body weight of any group of mammals. Resulting from
these unique life history characteristics, this genus is
particularly sensitive to human influences on their habitats,
including habitat loss, stand-scale simplification of forest
structure via some forms of logging, and landscape-scale effects of
habitat fragmentation. Given their strong associations with
structural complexity in forests, martens and the fisher are often
considered as useful barometers of forest health and have been used
as ecological indicators, flagship, and umbrella species in
different parts of the world. Thus, efforts to successfully
conserve and manage martens and fishers are associated with the
ecological fates of other forest dependent species and can greatly
influence ecosystem integrity within forests that are increasingly
shared among wildlife and humans.
We have made great strides in our fundamental understanding of
how animals with these unique life history traits perceive and
utilize habitats, respond to habitat change, and how their
populations function and perform under different forms of human
management and mismanagement. This knowledge enhances our basic
understanding of all species of Martes and will help us to achieve
the goal of conserving viable populations and representative
distributions of the world's Martes, their habitats, and associated
ecological communities in our new millennium.
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