The impact of the Tasmanian drought
Significantly increased numbers of sugar gliders have been
injured after being forced into suburbia this drought year,
as a result of fleeing from bushfires and lack of food due
to the tinder dry conditions.
Weather Pattern
By the summer of 1999/2000 much of Tasmania was officially
registered as drought stricken, with annual rainfall reduced
by almost half. This has been attributed to the effect of
the La Nina weather pattern and has had a devastating effect
on our wildlife, forcing them out into the open and into suburbia
in search of food.
Bushfires
Apart from the carnage of gliders caught in the path of a
bushfire the immediate lack of food in the wake of such a
disaster is also detrimental. Bushfires destroy forest understoreys
and eucalypt canopies for a full season, forcing gliders to
be exposed as they transfer territory. Also gliders have difficulty
adapting to new territories.
Increased Visibility
Local farmers believed possums and wallabies for instance
had reached plague proportions but National Parks and Wildlife
confirm that is not the case - the animals are simply more
visible as they are forced out to search for green fodder
in roadside ditches and watered gardens.
Suburban Predators
The Sugar Glider grazes on spiders and insects, which need
moisture to survive, so have little alternative but to follow
their food source into suburbia until the rains replenish
bushland stock. Consequently the drought has intensified the
problem of domestic and feral cats preying on wildlife
Natural Predators
The gliders natural predator, the owl, has also followed
its food source into suburbia where they are more vulnerable
and easier prey
Introduced Predators
The European Wasp, which competes for the tree hollows Gliders
require to sleep, breed and raise young in, thrives in these
dry conditions and has multiplied.
Summary
In short it is feared that this drought has not only reduced
the current population because they have fallen prey or become
weak and vulnerable, but will also lead to a significant reduction
in numbers in the coming year, due to reduced breeding
At least two previous studies have concluded that the combination
of logging and a major bushfire in the same vicinity can decimate
glider populations completely by decreasing nesting sites
& food sources. Because their lives are so secretive and hidden
from us it would be a silent decline.
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