Caribou habitat restoration may be ineffective in the short term, says UBC study

Caribou habitat restoration may be ineffective in the short term, says UBC study

Wildlife responses to habitat restoration are often assumed rather than verified, a new B.C. study suggests

A new study done in northeastern Alberta suggests habitat restoration may not be enough to save threatened woodland caribou, at least in the short term, and researchers at the University of British Columbia say their results make the case for a more rigorous analysis of conservation methods.

Much of the caribou habitat in Western Canada has already been degraded by industrial activities, such as oil and gas exploration, so one of the key tools being used to protect caribou is habitat restoration, said Cole Burton, the senior author of the study and a forestry professor who leads the wildlife coexistence lab at the university.

But wildlife responses to habitat restoration are often assumed rather than verified, the study says.

“We can’t just accept on faith that things are working,” Burton said in an interview on Wednesday.

The researchers set out to monitor caribou and their predators, such as black bears and wolves, as well as other prey like moose and white-tailed deer in both restored and unrestored habitat areas between 2015 and 2018.

In northeastern Alberta, they placed hidden cameras along seismic lines — narrow strips of land cleared for oil and gas exploration. They fragment caribou habitat and facilitate the movement of predators, disrupting a natural separation and increasing the predation of caribou, Burton said.

The study, which was published last week in the journal Biological Conservation, showed that most predators and prey used the restored seismic lines about as much as they used the unrestored lines.

Caribou preferred to use more isolated lines and those around low-lying wetland areas, regardless of whether the lines had been restored. Only white-tailed deer were observed using the restored lines less than the unrestored ones, the study found.

The researchers monitored lines that had been restored three to six years before the study as part of an effort by members of the Canadian Oil Sands Innovation Alliance, or COSIA, to reclaim 570 square kilometres of caribou habitat along the Athabasca River about 70 kilometres southwest of Fort McMurray, Alta.

READ MORE: B.C. Interior caribou protection area big enough, minister says

In addition to tree planting, restoration can also include the development of mounds of earth and piles of fallen logs and debris to try to break up the movement and sight lines of predators.

Deterring predators with so-called movement blockers requires substantial effort and modification of the landscape, said Burton, who noted it’s possible that intensifying these efforts could help break up seismic lines more effectively.

The lines Burton and his team studied in Alberta were developed around the 1980s.

“Since that time, industry has tried to change their methods to what they would call low-impact seismic lines, so much narrower (and) maybe not as straight, so they break up the line of sight of the predators, like wolves,” said Burton.

COSIA could not immediately be reached for comment.

The same issues are happening in northeastern B.C., where woodland caribou also roam alongside seismic lines established for oil and gas exploration, Burton said.

In October, the province announced it was allocating $6.5 million over three years for caribou habitat restoration projects, including planting trees, spreading woody debris and installing fences to disrupt the thoroughfares that advantage predators.

But trees grow back slowly in the northern Boreal forest, which means caribou habitat restoration is a long-term process, Burton said.

A spokesperson for the B.C. Ministry of Forests, Lands, Natural Resource Operations and Rural Development said it is reviewing the study to determine if and how its findings could be applied to the province’s caribou recovery strategy. The ministry also said the recovery program is closely monitored to determine whether it’s meeting caribou recovery goals.

More immediate measures, such as maternity penning where pregnant caribou are protected by a fence as well as predator culling, are also part of the B.C. government’s strategy to protect threatened caribou.

Burton said it’s likely the province will have to pursue a predator cull, which is contentious, for a long time until caribou habitat recovers more fully.

“If we’re going to keep caribou around, we really do need to think about what vision are we going to keep them in,” said Burton.

“Are we going to put them in a little fenced area until we finish developing and restoring the landscape and just hope that they survive? Or are we going to have a vision where we have more substantial protection of their habitat?”

Brenna Owen, The Canadian Press

Like us on Facebook and follow us on Twitter.

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Amanda Parsons, a registered nurse on staff at the Northwood Care facility, administers a dose of the Moderna vaccine to Ann Hicks, 77, in Halifax on Monday, Jan. 11, 2021. THE CANADIAN PRESS/Andrew Vaughan-Pool
61 new COVID-19 cases, two more deaths in Interior Health

Twenty-nine people are in hospital, seven of whom are in intensive care

Dr. Cori Lausen, bat specialist, has questions about logging in an unusual bat habitat near Beasley. Photo: Submitted
Kaslo biologist questions logging at unique West Kootenay bat site

Dr. Cori Lausen, a bat specialist, studies a population of bats above Beasley

Robbie Campbell lost his livelihood when the pandemic shut down Shambhala Music Festival. Instead, he spent part of 2020 working on a children’s book called Tulip that is now available. Photo: Submitted
In a lousy year, a Kootenay man was saved by a pink T-rex

Robbie Campbell became a children’s author after the pandemic cost him his livelihood

Community mental health workers are in high demand, and a new program at Selkirk College will provide opportunities in this field. File Photo
Selkirk College to train community mental health workers

Twelve students will complete two courses enabling them to work in health and human services

A health-care worker prepares a dose of the Pfizer-BioNTech COVID-19 vaccine at a UHN COVID-19 vaccine clinic in Toronto on Thursday, January 7, 2021. THE CANADIAN PRESS/Nathan Denette
253 new COVID-19 cases, 4 more deaths in Interior Health over the weekend

More than 1,000 cases in the region remain active

Syringe is prepared with one of B.C.’s first vials of Pfizer vaccine to prevent COVID-19, Victoria, Dec. 22, 2020. (B.C. government)
B.C.’s COVID-19 caseload stays steady with 465 more Tuesday

No new outbreaks in health care facilities, 12 more deaths

Cannabis bought in British Columbia (Ashley Wadhwani/Black Press Media)
Is it time to start thinking about greener ways to package cannabis?

Packaging suppliers are still figuring eco-friendly and affordable packaging options that fit the mandates of Cannabis Regulations

New Westminster TV production designer, Rick Whitfield, has designed an office in a box for British Columbians in need of a private workspace. (BC Box Office photo)
PHOTOS: B.C. man designs ‘box office’ solution for those working from home

‘A professionally designed workspace on your property, away from the distractions of home’

Chilliwack ER doctor Marc Greidanus is featured in a video, published Jan. 18, 2021, where he demonstrates and describes effectiveness of various styles of masks. (Youtube)
VIDEO: Emergency room doctor runs through pros and cons of various masks

‘We’ve been asked to wear a mask and it’s not that hard,’ Greidanus says.

(Pixabay photo)
VIDEO: Tip to Metro Vancouver transit police helps woman 4,000 km away in Ohio

Sgt. Clint Hampton says transit police were alerted to a YouTube video of the woman in mental distress

A woman types on her laptop in Miami in a Monday, Dec. 12, 2016, photo illustration. THE CANADIAN PRESS/AP/Wilfredo Lee
British Columbia government lax on cybersecurity practices, auditor reports

The audit did not highlight a specific threat, but it found breaches in cybersecurity are increasing globally

Cranbrook Food Bank coordinator Deanna Kemperman, Potluck Cafe Society executive director Naved Noorani and Sunshine Coast Community Services Society executive director Catherine Leach join B.C.’s new Municipal Affairs Minister Josie Osborne on a video call about B.C. gaming grants, Jan. 19, 2021. (B.C. government)
B.C. gaming grants reorganized for COVID-19 priorities

Minister highlights community kitchens, food banks

(Pixabay photo)
‘Cocaine bananas’ arrive at Kelowna grocery stores after mix up from Colombia: RCMP

Kelowna RCMP recently concluded an international drug investigation after finding cocaine in local grocers’ banana shipments in 2019

A new video from NCCIH and BC Northern Health titled ‘Healing in Pandemic Times: Indigenous Peoples, Stigma and COVID-19’ was animated by Joanne Gervais. (Photo Provided By: NCCIH Archives)
VIDEO: Stigma against Indigenous people is a ‘social sickness’

A new short animated video is aiming to educate the public on the stigmatization

Most Read