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

Festival of the Arts registration moved because of Family Day

‘I’m extremely happy with these adjudicators that are lined up’

“Witness did not ram the stolen truck,” in Dec. 27 incident near Canim Lake

RCMP speak out after incorrect social media statements

100 Mile House Wranglers split weekend in a ‘very average’ display

They beat Chase 5-4 in overtime but came home to lose to Kamloops 3-1

Parkside features two young artists

‘There’s a lot of talent in the younger art community’

B.C. opioid crisis to get same world-renowned treatment approach as HIV/AIDS

A program that focuses on treatment as prevention will roll out Jan. 17

Olympian snowboarder Max Parrot diagnosed with Hodgkin’s lymphoma

Each year in Canada, approximately 900 people are diagnosed with Hodgkin’s lymphoma

Man, 31, charged in Cache Creek fatal shooting

Corey Richard Harkness appeared on one count of murder in provincial court in Kamloops

‘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

IIO clears Williams Lake RCMP of wrongdoing in serious harm allegation

Independent Investigations Office of BC says injuries were not sustained during police custody

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’

Most Read