Study shows black bears need a variety of salmon species to be healthy

They studied animals across a 22,000-kilometre stretch along coastal British Columbia’s ‘Great Bear Rainforest’

Black bears need access to different species of salmon rather than huge numbers of a single variety in order to be healthy, a new study by Canadian researchers indicates.

Lead author Christina Service said if bears have access to a “portfolio of different salmon species” then the animals have access to more food for a greater part of the year.

“It is the equivalent of humans going to an all-you-can-eat buffet for just a couple of days versus having one good meal a day for many months,” said the PhD candidate from the University of Victoria, adding that different species of the fish have different run timings and use different habitat.

When they have access to the fish for a larger part of the year, they end up eating more salmon overall and are in better health, she said.

The team of researchers used chemical techniques on hair samples from 379 black bears and 122 grizzly bears between 2009 and 2014 to estimate their salmon consumption, which showed population productivity and health.

They studied animals across a 22,000-kilometre stretch along coastal British Columbia’s “Great Bear Rainforest,” in collaboration with the Wuikinuxv, Nuxalk, Heiltsuk and Kitasoo/Xai’xais First Nations.

READ MORE: Ryan Reynolds to narrate movie about B.C.’s Great Bear Rainforest

With bears hibernating in winter, they have only certain windows where they’re able to eat, Service said.

So by having access to salmon earlier in the year bears can start fattening up sooner, she said.

Kitasoo/Xai’xais First Nation Chief Councillor and study collaborator Douglas Neasloss said he is concerned that the federal government’s current salmon management focuses on large salmon runs and often ignores smaller runs that contribute to diversity.

Study co-author Chris Darimont said researchers have expressed concern about the health of all salmon populations.

“It’s a difficult time to be a salmon these days with climate change, reduced ocean productivity, over-exploitation, diseases from salmon farms and neglect in management,” he said.

Service said the federal government should think about the management of fisheries in a holistic sense.

This means thinking of fisheries as benefitting not just commercial and recreational interests but other wildlife and ecosystems too, she said.

“We need to consider species diversity and not just abundance.”

So not just those that are easy to produce in hatcheries and commercially valuable but the smaller runs too, she said.

“Those (smaller) runs really matter for bears.”

READ MORE: Problem bears in Sooke break into car and have a party in a shed

She said research shows the more variety of salmon that bear eat, the bigger they get, the more offspring they are able to have and the better those offspring do.

Bears play a really important role in the moving of nutrients, she said, explaining that salmon are moved from water to land and bears act as gardeners by fertilizing the ground with fish carcass.

Nutrients from salmon carcasses not just help trees but other species too, she said.

“It is important to care about bears because they are bears and they have intrinsic value, but the bear-salmon relationship is also very important to ecosystem,” Service said.

Hina Alam, The Canadian Press


Like us on Facebook and follow us on Twitter.

Just Posted

Castor council supporting FCSS government request for increased mental health services

Mental health issues affect one in five Canadians in a given a year

Castor hosts first in region ‘Music in the Park’

Around 100 Castor residents came to enjoy music and fellowship at the event

Changes coming to this year’s Big Valley Jamboree

Camrose’s popular country music festival ‘enhances guest experience’

Pig Roast and the dance was held June 22nd

Castor Rodeo, which was postponed due to weather, will proceeed on July 11th and 12th

Stettler County continues to work with Paradise Shores developers

The County issued a Stop Order for the site in May

VIDEO: Stop-motion artist recreates Kawhi Leonard’s famous buzzer-beater

It took Jared Jacobs about 40 hours to make the video, on top of the research

Lower youth minimum wage won’t apply at this year’s Calgary Stampede

A new minimum wage of $13/hr is now in effect for Alberta workers aged 13 to 17

Local cowboys take the Stampede lead on opening night

Bareback, team roping has Ponoka sitting pretty in race to the finals

Rock slide in B.C. river may hinder salmon passage

DFO says it is aware that the slide occurred in a narrow portion of the Fraser River

Four-hour tarmac delay violates charter rights of Canadians with a disability: lawsuit

Bob Brown says new rules reduce the distance he can travel by air without putting his health at risk

Accused mother cries at Alberta trial over boy who died of meningitis

Parents charged with failing to provide necessaries of life for their son who died in 2012

Ponoka County receives update from energy lobby group

CAPP hopes to work with municipalities on property tax issues

Air Canada reviewing how crew left sleeping passenger on parked plane

In a Facebook post, the woman said she woke up ‘all alone’ on a ‘cold dark’ aircraft

Most Read