Wolf Hunting Hurts Wolf Packs

  • The gray wolf is slated to be removed from the Endangered Species List. Many are worried this will have a negative impact on wolf packs. (Photo courtesy of Wisconsin Fish and Wildlife Service)

This year, the U.S. Fish and Wildlife Service plans to officially remove the northern
Rockies gray wolf from the federal Endangered Species List. The agency will hand over
management of the wolves to states in the region. The states will allow hunters and
ranchers to kill wolves during specific seasons, or even year-round. But scientists and
conservationists are concerned about the hunting plans. Kinna Ohman reports some
conservationists think hunting could disrupt the way a wolf pack works, and even lead
members to seek out easier prey such as livestock:

Transcript

This year, the U.S. Fish and Wildlife Service plans to officially remove the northern
Rockies gray wolf from the federal Endangered Species List. The agency will hand over
management of the wolves to states in the region. The states will allow hunters and
ranchers to kill wolves during specific seasons, or even year-round. But scientists and
conservationists are concerned about the hunting plans. Kinna Ohman reports some
conservationists think hunting could disrupt the way a wolf pack works, and even lead
members to seek out easier prey such as livestock:


Biologists in Yellowstone National Park have had an unprecedented opportunity to study
wolves over the last twelve years. They’ve looked at everything from what wolves prefer
to eat, to why wolves kill big prey such as bison. But one topic they haven’t studied
much is how a typical wolf pack works.


Doug Smith is a biologist with Yellowstone’s wolf recovery program. He says they now
understand healthy wolf packs need lots of older, skilled members in order to hunt natural
prey:


“They’re very good at it. They have a lot of teamwork. They switch back and forth
about whose doing what job.”


In fact, studies have shown it takes 3-4 skilled adults to kill an elk. It takes more wolves
to kill a bison. Packs in Yellowstone are naturally filled with large numbers of adults.
But in places where wolves are hunted by humans, skilled adults are in short supply.


Smith says a lack of skilled wolves in a pack could mean they’d be more likely to go after
easier prey including livestock:


“If they don’t have that experienced age structure in the pack, they make do, and so
you will have probably inexperienced killers out there and inexperienced killers are gonna
look for easier prey. The elders of the pack, if there are only 2 or 3 of you,
are much more likely going to go after a sheep or cow than if there’s 7 or 8 of you.”


These concerns could become real when the gray wolf is taken off the Endangered
Species list in the northern Rockies. The states of Montana, Idaho, and Wyoming will
take over management. Suzanne Stone with the Defenders of Wildlife in Idaho says
hundreds of wolves could be killed as part of state management plans:


“They’re talking about killing now about 500 to 600 wolves after delisting. You
don’t manage any population of wildlife like that. The delisting plan, as it’s written
right now, is just a recipe for failure.”


Stone says the gray wolves were protected to build healthy populations, and how a wolf
pack works should be part of that consideration.


But the government is focused on how sport hunting effects just wolf numbers. Ed Bangs
is the wolf recovery coordinator with the U.S. Fish and Wildlife Service. He says that
hunting won’t threaten the wolves:


“One thing that does happen everywhere in the world that wolves and people
overlap is that people kill wolves. And the answer is yes, that does have an effect on
wolf pack structure. And it certainly never endangered wolf populations.”


So it’s hard for conservationists to convince officials that the sport hunting of wolves
could change how wolf packs work and even lead to more livestock conflicts. Biologist
Doug Smith says that’s because the decision to delist the wolves is based purely on
numbers:


“Delisting is entirely numbers. Some conservation biologists have made the
argument that delisting should not occur until the endangered species is integrated
back within the ecosystem and functioning as a member as that ecosystem. That is
not how delisting occurs now for the Fish and Wildlife Service. It’s ‘do we have
enough?'”


Many conservationists and activists will soon be arguing that killing 500 to 600 wolves
leave too few. They’ll likely file lawsuits, stressing that the importance of healthy wolf
packs should be considered before hunting is allowed.


Ed Bangs with the Fish and Wildlife Service says he’s confident the agency has followed
the law. He says they’ll meet the requirements of the Endangered Species Act by
delisting the wolves and handing management over to the states:


“My deal with the Fish and Wildlife Service is: What is the purpose of the act as it’s
currently written by Congress, have we met those conditions for wolves, and the
answer is clearly yes and therefore we’re supposed to delist them. If people want the
act to say something different, they need to talk to their elected officials, not the Fish
and Wildlife Service.”


But the wolf’s defenders will argue the U.S. Fish and Wildlife Service as well as the
states need to understand how the wolf packs work before declaring open season on the
wolf.


For the Environment Report, I’m Kinna Ohman.

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Wolves Make Mark on Yellowstone

  • The wolves in Kinna Ohman's report as seen through a spotting scope. Wolves have helped strengthen several species of plants and animals in Yellowstone National Park. (Photo by Marlene Foard)

Scientists are surprised by the changes one animal can make in America’s first national park.
Since the wolf returned to Yellowstone, the predator’s had wide-ranging and unexpected effects
on the ecosystem of the park. As Kinna Ohman reports, top predators such as wolves might be
more necessary than previously realized:

Transcript

Scientists are surprised by the changes one animal can make in America’s first national park.
Since the wolf returned to Yellowstone, the predator’s had wide-ranging and unexpected effects
on the ecosystem of the park. As Kinna Ohman reports, top predators such as wolves might be
more necessary than previously realized:


Yellowstone National Park holds many wonders, but few things capture a visitor’s imagination
like the wolf:


“Whoa, I can see their eyes.”


Marlene Foard lets me peek through her scope and see members of the Slough Creek wolf pack
tearing into a recent kill. As we watch, we hear another group of wolves howling in the distance:


“Did you hear ’em? Yeah, did you hear that? Oh my God…”


(Sound of wolves howling)


Visitors are not the only ones fascinated by the wolves. Lately, scientists have been caught up in
the excitement too. Not just by the wolves, but how the wolves are changing Yellowstone.


(Sound of creek)


It’s a cold yet sunny day in the park. I’ve met up with Doug Smith, the project leader of
the park’s wolf recovery program. But we’re not going to look for wolves today. We’re about to
see how wolves are changing the landscape:


(Sound of footsteps)


“This is Blacktail Deer Creek that we’re walking up on. And it’s surrounded by willows.
And these willows about ten years ago were not growing as luxuriantly as they are right
now.”


This new willow growth happened after the wolves’ reintroduction to Yellowstone, and many
scientists are making a connection. Willow can be a food for elk especially in the winter, but
since the wolves have returned, elk would rather be on hillsides and open areas where they can
see wolves coming. And once they leave the river valleys behind, plants like the willow are
recovering.


The willow’s recovery is important because it helps other wildlife. Beaver eat willow and use it
for building dams. And ponds created by beavers are great habitat for endangered birds, like the
warbler. Doug Smith says the fact this could be caused by wolves caught everyone by surprise:


“Nobody thought of this. I was around at the beginning. There were many studies done
looking at what the impacts of wolves would be. And I can’t remember reading about this
at all.”


And it goes beyond the willow. Bill Ripple is a professor of Ecology at Oregon State University.
He came to Yellowstone in 1997 to study why aspen trees were declining. Ripple wasn’t thinking
wolves, but one day, when studying tree ring data, he saw the aspens’ problems began just when
the last wolves were killed off in Yellowstone. He was equally surprised:


“I didn’t see anything in the record. It wasn’t on my radar to see how wolves may be
affecting aspen trees. That was not even considered at all. And all of a sudden, it appears
that this one animal can have this profound effect on the entire ecosystem.”


And this got Ripple thinking about the top predators a little differently. He says these effects
might even extend to other animals:


“I think that this effect of predators would probably go well beyond just cougars or wolves.
You know everything from black bears to grizzly bears to lynx to wolverines. They may all
play important roles that we don’t even know about at this point.”


Not everyone thinks predators are needed for ecosystems to thrive. There are hunters who
consider wolves unnecessary and even competition for animals such as deer and elk, but Doug
Smith says it’s important to realize the contribution of wolves goes beyond what hunters can do.
Willow and aspen re-growth depends on wolves changing elk behavior. And this has to happen
year round:


“Human hunters, well known this fact, and I’m a hunter and I know this, prey behavior
changes during the hunting season, and before and after they go back to doing what they
want. Having a carnivore on the landscape changes prey behavior year round. A totally
different presence than human hunting.”


But there’s a caveat. Smith says there has to be a certain number of wolves on the landscape for
these changes to occur. And the number might be more than humans are willing to tolerate:


“You know, just having wolves on the landscape does not do it. And that’s a very, very
important point because some people are using wolves to argue that we’re going to get this
ecosystem restoration, this ecosystem recovery. But they need to be at a certain minimum
density. And that might be in some places at densities that are too high for humans to
socially tolerate.”


So, ultimately, ecological recovery could depend on humans, not the wolves. Human tolerance
needs to be high enough to allow top predators like the wolf to return to ecosystems, otherwise,
full recovery might never happen.


For the Environment Report, I’m Kinna Ohman.

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Island Park Wins Award

Each year the National Park Service gives out awards to projects that help people understand the country’s parks. One of this year’s winners is a book about Isle Royale – a National Park in the middle of Lake Superior. The Great Lakes Radio Consortium’s Tamar Charney reports:

Transcript

Each year the National Park Service gives out awards to projects that help people understand the country’s parks. One of this year’s winners is a book about Isle Royale – a National Park in the middle of Lake Superior. The Great Lakes Radio Consortium’s Tamar Charney reports:

More people visit Yellowstone National Park in a week than visit Isle Royale National Park in a year. Each year some of those visitors are artists participating in the park’s artist-in-residence program. They stay on the Island for about 2 weeks, take pictures, paint, sketch, or write songs and poetry about the park. A book called “The Island Within Us” features work by these artists. Jill Burkland is the executive director of the Isle Royale Natural History Association. The association put the book together.

“Not very many, not very many people ever go to Isle Royale so this is a way of sharing the island with people who can’t necessarily go or don’t plan to go.”

“The Island Within Us” has tied with a book about the Grand Canyon for best general book in the National Park Services Excellence in Interpretive Media Awards. For the Great Lakes Radio Consortium, I’m Tamar Charney.