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

Abbotsford Hospice hosts fourth annual memorial butterfly release

Event on Saturday, July 27 at Tanglebank Gardens

Rail group to bring plan to Abbotsford council

Group is calling for plans to run trains on rail line between Chilliwack and Surrey

Mt. Baker climbers reach summit in memory of Const. John Davidson

Team includes Abbotsford Police members, Davidson’s 3 kids and others

UPDATE: New Abbotsford ER expansion expected to welcome patients in October 2020

Deadline for construction proposals closes, but construction timeline unknown

VIDEO: Missing teens named as suspects in three northern B.C. killings

Kam McLeod and Bryer Schmegelsky are wanted in the deaths of Lucas Fowler, Chynna Deese, unknown man

VIDEO: Man found dead near B.C. teens’ truck could be linked to a double homicide

RCMP said they are looking for Kam McLeod, 19, and Bryer Schmegelsky, 18, of Port Alberni

Weather Network’s anti-meat video ‘doesn’t reflect true story’: cattle ranchers

At issue is the video’s suggestion that cutting back on meat consumption could help save the planet

Northern B.C. First Nation clan sues pipeline company

Wet’suwet’en clan seeks damages and costs from Coastal Gaslink over destruction of access point camp

VIDEO: Young couple found dead in northern B.C. had been shot, police say

Chynna Noelle Deese of the U.S. and Lucas Robertson Fowler of Australia were found along Highway 97

Wrestling legend finds his wedding dance groove in B.C.

Professional wrestler Chris Jericho posted on social media that he was in Penticton recently

Vancouver Public Library banned from Pride parade after allowing controversial speaker

Vancouver Public Library allowed Meghan Murphy to book space for an event at the library in January

Man arrested after allegedly attacking people with syringe in Burnaby mall

Police say that no one has yet to come forward with injuries consistent with needle stab wounds

Horgan hints at Daylight Saving Time changes after record survey response

More than 223,000 online surveys were submitted in the government’s public consultation

Most Read