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

Court tosses Port Moody’s ticket for anti-SOGI rally

A group founded by a Langley woman was fined for a rally in Port Moody in 2018.

VIDEO: Dragon’s Den star headlines Unapologetically Her show in Langley

TV celebrity, author, and renowned entrepreneur Arlene Dickinson speaks truths about powerful women.

Aldergrove Kodiaks drown Whalers 6-3

Aldergrove Junior hockey team secure in PJHL playoffs spot next month

Langley women’s group fundraises by celebrating life of Scottish poet

The Soroptimists of the Langleys are hosting a Robbie Burns Night as a fundraiser for local seniors.

We want to see Langley through your lens

Readers invited to submit photographs of this community

VIDEO: Langley grocer serves up breakfast to neighbouring school

Willoughby Elementary students and their families could enjoy a free breakfast on Thursday morning.

‘Prince of Pot’ Marc Emery accused of sexual assault, harassment

Emery denied the allegations, but a Toronto woman says she is not the only one speaking out

Vancouver Island photographer makes National Geographic’s 2018 elite

Rare double honour for Marston from the 36 best Your Shots out of nearly 19,000 photos

Ex-Liberal candidate in Burnaby, B.C., says volunteer wrote controversial post

Karen Wang dropped out following online post singling out NDP Leader Jagmeet Singh’s ethnicity

Asteroids are smacking Earth twice as often as before

The team counted 29 craters that were no older than 290 million years

Canada’s arrest of Huawei exec an act of ‘backstabbing,’ Chinese ambassador says

China has called Canada’s arrest of Huawei chief financial officer Meng Wanzhou ‘politically motivated’

Manure company causing ‘toxic’ stink at Abbotsford school seeks permit

Property across from King Traditional Elementary cannot operate manure facility without permit

Vancouver city council endorses free transit for youth

Mayor Kennedy Stewart will write a support letter to TransLink

In limbo: Leftover embryos challenge clinics, couples

Some are outright abandoned by people who quit paying storage fees and other couples struggle with tough decisions

Most Read