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

Volunteer needed to empty dog poop can in Saanich Park

Local volunteers do the work of irresponsible dog owners at Mount Doug

Sexual assault charge dropped against from CFB Esquimalt member

Navy Lt. Ronald Clancy was charged with two counts of sexual assault in August 2018

Vancouver Island overdue for the big one, can also expect mega-thrust tsunami

The last big earthquake was 70 years ago in Courtenay

Sentence handed down for sex assaults committed more than 30 years ago

Man in his 80s will serve a conditional sentence in the community

BC Ferries considers passenger only ferry between West Shore and Victoria

Royal Bay, Esquimalt and Ship Point considered as part of study into new route

VIDEO: RCMP ask kids to help name soon-to-be police dogs

13 German shepherd puppies will be born this year

No injuries, pollution in Vancouver Harbour ship collision: Transport Canada

Transportation Safety Board says it has deployed a team of investigators look into the incident

Budget 2019: Five things to watch for in the Liberals’ final fiscal blueprint

Finance Minister Bill Morneau will release the Trudeau government’s final budget on Tuesday

New concussion guidelines launched for Canada’s Olympians, Paralympians

The guidelines will be in effect at this summer’s Pan American, Parapan American Games in Lima, Peru

Alphonso Davies doubtful for Canada game against French Guiana in Vancouver

Canada will be without injured captain Scott Arfield and veteran Will Johnson

Watchdog called after man who yelled racial slurs at B.C. vigil hurt during arrest

BC RCMP say man was ‘acting suspiciously’ at prayer vigil for victims of New Zealand mosque shootings

NDP’s Jagmeet Singh steps into the House of Commons, making history

Burnaby South MP becomes first visible minority to lead a federal party in the House of Commons

Reeling Port Alice about to lose its only bank

Scotiabank branch closure follows latest mill setback, bad for business and the elderly

Most Read