http://www.calgaryherald.com/Mountain+parks+survey+finds+healthy+population+wolverines/9782439/story.html
Mountain parks survey finds
healthy population of wolverines
BY COLETTE DERWORIZ, CALGARY HERALD APRIL 28, 2014
Tony Clevenger, project manager, says his
study is looking at how effective wildlife
crossings at highways are for wolverines.
Photograph by: Stuart Gradon, Calgary Herald, Files ,
Calgary Herald
An extensive survey in the mountain parks has
discovered at least 64 wolverines - including three
from a population that has never been found north
of the U.S. border and another that could have
travelled from even farther away.
discovered at least 64 wolverines - including three
from a population that has never been found north
of the U.S. border and another that could have
travelled from even farther away.
The $1.7-million project, which included Parks
Canada, the Miistakis Institute in Calgary and
the Western Transportation Institute at Montana
State University, has wrapped up after starting
in 2009.
Canada, the Miistakis Institute in Calgary and
the Western Transportation Institute at Montana
State University, has wrapped up after starting
in 2009.
"We identified 64 different individuals," said Tony
Clevenger, project manager and senior wildlife
research scientist with the Western Transportation
Institute. He was speaking last week at an event
hosted by the Bow Valley Naturalists in Banff."This
was a big surprise," he said.
Clevenger, project manager and senior wildlife
research scientist with the Western Transportation
Institute. He was speaking last week at an event
hosted by the Bow Valley Naturalists in Banff."This
was a big surprise," he said.
"I don't think anybody thought we'd identify 64
individuals."
individuals."
Of the 64, DNA analysis showed there are 25
females and 39 males, including one male that
was genetically distinct and three others who
came from a population commonly found in the
United States.
females and 39 males, including one male that
was genetically distinct and three others who
came from a population commonly found in the
United States.
The preliminary findings, which will be used to
monitor and manage the elusive animals, is
believed to be the minimum population of
wolverines in a 9,000-square-kilometre study
area that included Banff, Yoho and Kootenay
national parks, as well as Kananaskis Country
.Clevenger said the research suggests there's
a good mixing ground for wolverines.
monitor and manage the elusive animals, is
believed to be the minimum population of
wolverines in a 9,000-square-kilometre study
area that included Banff, Yoho and Kootenay
national parks, as well as Kananaskis Country
.Clevenger said the research suggests there's
a good mixing ground for wolverines.
"This is an important core area for wolverines
at a larger landscape scale," he said. "It's critical
for the survival of wolverines."
at a larger landscape scale," he said. "It's critical
for the survival of wolverines."
As the largest member of the weasel family,
wolverines are elusive carnivores known for
being sly predators. They weigh only six to 16
kilograms, but they have razorsharp teeth and
strong jaws.
wolverines are elusive carnivores known for
being sly predators. They weigh only six to 16
kilograms, but they have razorsharp teeth and
strong jaws.
The western population is listed as a species
of special concern by the federal Committee
on the Status of Endangered Wildlife in Canada
because of their low reproductive rate and the
amount of space they require to maintain viable
populations.
of special concern by the federal Committee
on the Status of Endangered Wildlife in Canada
because of their low reproductive rate and the
amount of space they require to maintain viable
populations.
Alberta also acknowledges the animals could be
at risk and require special management considerations.
at risk and require special management considerations.
Before the project by Clevenger and his team, not
much was known about the wolverines living in
Canada's Rocky Mountains. They are rarely seen
in the wild, but there have been at least four wolverines
killed on highways in the mountain parks - including two
on the Trans-Canada Highway and two on Highway 93
in Kootenay National Park - since the 1970s.
much was known about the wolverines living in
Canada's Rocky Mountains. They are rarely seen
in the wild, but there have been at least four wolverines
killed on highways in the mountain parks - including two
on the Trans-Canada Highway and two on Highway 93
in Kootenay National Park - since the 1970s.
Clevenger's research also looked at how effective
wildlife crossings are for the species, but he said
the data are inconclusive.
wildlife crossings are for the species, but he said
the data are inconclusive.
So far, he said they have only been captured on
remote cameras 10 times as they used the
overpasses and underpasses in BanffNational Park.
remote cameras 10 times as they used the
overpasses and underpasses in BanffNational Park.
"We don't know if they are approaching them and
not using them," said Clevenger. "A lot of our
monitoring has been in the lower part of the valley,
where the valley is wider and there's an active wolf
pack in the area.
not using them," said Clevenger. "A lot of our
monitoring has been in the lower part of the valley,
where the valley is wider and there's an active wolf
pack in the area.
"Wolverines just may not be coming down into the
valley because of that. It's a pretty risky area for
them to be crossing over."
valley because of that. It's a pretty risky area for
them to be crossing over."
The monitoring of the wildlife crossings will now be
taken over by Parks Canada - which will include
collection and analysis of data on the wildlife
using the structures.
taken over by Parks Canada - which will include
collection and analysis of data on the wildlife
using the structures.
"It's part of a larger picture," said Rick Kubian,
manager of resource conservation with the Lake
Louise, Yoho and Kootenay field unit. "We've
established a baseline from which we'll be able
to move forward and over time be able to understand
the effectiveness of the crossing structures on a
species like wolverine."
manager of resource conservation with the Lake
Louise, Yoho and Kootenay field unit. "We've
established a baseline from which we'll be able
to move forward and over time be able to understand
the effectiveness of the crossing structures on a
species like wolverine."
Research has shown other wildlife are using the
crossing structures.
crossing structures.
Kubian said the monitoring work will carry over into
Kootenay National Park, where three underpasses
were added last year.
Kootenay National Park, where three underpasses
were added last year.
It's believed the highway crossings west of the Castle
Junction will see more activity by wolverines.
Junction will see more activity by wolverines.
"If they are going to be using crossings, this is where
we'll expect it," Clevenger said. "In another five years,
we should hopefully know more."
we'll expect it," Clevenger said. "In another five years,
we should hopefully know more."
In a meantime, he said he'd like to take his research
to the unprotected area between Kananaskis Country
and Waterton Lakes National Park now that their work
in Banff, Yoho and Kootenay is complete.
to the unprotected area between Kananaskis Country
and Waterton Lakes National Park now that their work
in Banff, Yoho and Kootenay is complete.
"What we found here is that this is an important corridor
for wolverines," Clevenger said. "We know that Glacier
and Waterton are important corridors, too.
for wolverines," Clevenger said. "We know that Glacier
and Waterton are important corridors, too.
"It's the area between these two protected area
complexes that we don't really know anything about
wolverines in this area."
complexes that we don't really know anything about
wolverines in this area."
There isn't much known about how wolverines cross
Highway 3, what corridors they move through or how
many spend time in the area.
Highway 3, what corridors they move through or how
many spend time in the area.
"To maintain this large and transboundary meta-
population," he said, "we need to start learning
about wolverines in this area to maintain connectivity
with the U.S. population."
population," he said, "we need to start learning
about wolverines in this area to maintain connectivity
with the U.S. population."
Last year, the United States Fish and Wildlife Service
announced it would consider protecting the North
American wolverine as a threatened species. It's
believed there are only 250 to 300 wolverines in the
U.S.
announced it would consider protecting the North
American wolverine as a threatened species. It's
believed there are only 250 to 300 wolverines in the
U.S.
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