(The Canadian Press)

Lack of bees, pollination limiting crop yields across U.S., B.C., study finds

Blueberry crops in B.C. were among those most affected by limited pollination

A lack of wild bees and managed honey bees is limiting pollination and yields for certain crops on farms in British Columbia and across the United States, a collective of researchers has found.

Their study published Tuesday in the Royal Society’s journal Biological Sciences used data from more than 130 farms to assess the pollination of crop flowers and yield for apples, highbush blueberries, sweet and tart cherries, almonds, pumpkins and watermelon.

Of those crops, the study found five frequently showed evidence of pollinator limitation, suggesting that the protection of wild bees and greater investment in honey bee colonies is likely to boost yields.

It notes that crops dependent on pollinators generate more than US$50 billion each year in the United States and declining bee populations raise concerns about food security in years to come.

The researchers collaborated to gain a “comprehensive understanding of our reliance on a lot of these pollinators for these really vitamin rich, nutritionally rich foods,” said Kyle Bobiwash, a co-author and assistant professor in the department of entomology at the University of Manitoba.

Blueberry crops in B.C. were among those most affected by limited pollination, said Bobiwash.

On some farms, he said, “there was a tremendous amount of pollen limitation, meaning there were a lot of flowers not actually getting pollinated sufficiently to set fruit.”

But the results varied by farm, said Bobiwash, noting he was involved in earlier research that showed some farms where crops had better pollination boosted yields by as much as 30 per cent.

“It amounted to thousands and thousands of dollars per acre, just because they had slightly better bee populations than other farms.”

Better pollination can also produce heavier, more juicy and likely tastier berries, he said.

“If you have a lot of pollen and you’re setting a lot more seed, you really invigorate this berry and you get all those biochemical processes happening. So, it’s going to gain more water (and) sugar, it’s going to produce more secondary metabolites, which are the little flavour compounds.”

Global demand for crops that are dependent on pollinators has increased, said Bobiwash, while the development of those crops often cuts into bee habitat.

At the same time, he said, climate change could affect the close relationship between plants and pollinators.

“As temperatures warm, plants might respond by blooming earlier (and) bees might respond by emerging earlier. But that’s not guaranteed,” said Bobiwash.

“We might have a plant blooming before the pollinators it evolved with emerge.”

Increasing pollination and crop yield isn’t as simple as bringing more honey bees to every farm, said Bobiwash. While the study showed different bees provided comparable amounts of pollination for most crops, he said some responded best to honey bees, such as almonds in California, and others benefited most from wild bees.

The results of the study point to the importance of protecting and enhancing habitat for wild bees, which could include wildflowers and certain weeds that farmers would normally remove, he said.

Brenna Owen, The Canadian Press

Like us on Facebook and follow us on Twitter.

Want to support local journalism? Make a donation here.

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

Just Posted

The River Forecast Centre is maintaining a flood watch for the area, including the Bella Coola River and tributaries, Kingcome River, Owikeeno-Rivers Inlet, and surrounding areas.
Wuikinuxv under evacuation order, more rain in forecast

Bella Coola’s Hill has re-opened but road conditions are muddy and wet

One person was killed in a two-vehicle crash south of Williams Lake on Highway 97 Wednesday, Oct. 28, 2020. (Photo submitted)
Highway 97 crash south of Williams Lake claims one life

Road conditions at the time were slippery and covered with slush: RCMP

Highway 20 is closed from the top Avalanche gate to the bottom Avalanche gate as of 19:30 on Tuesday October 27, 2020 (WL Tribune photo)
Rockslide closes the Hill as rain pours down in Bella Coola

Bad weather has resulted in rockfall on the Hill on Highway 20

The River Forecast Centre is issuing a Flood Watch for the Central Coast including Bella Coola River (file photo)
Flood watch issued for Bella Coola River

The River Forecast Centre is issuing a Flood Watch for the Bella Coola River

Two of the three grizzly cubs that were relocated to Smithers after their mother was killed (Caitlin Thompson photo)
Bella Coola residents urged to secure attractants after two sow grizzlies killed

One sow was a mother to three cubs of the year, which have been transported to Smithers

A woman wears a face mask and plastic gloves while browsing books as a sticker on the floor indicates a one-way direction of travel between shelves of books at the Vancouver Public Library’s central branch, after it and four other branches reopened with limited services, in Vancouver, on Tuesday, July 14, 2020. (THE CANADIAN PRESS/Darryl Dyck)
B.C. reports 234 new COVID cases, 1 death of senior who had attended small birthday party

Roughly 5,700 people are isolating due to being exposed to a confirmed case

A study by SlotsOnlineCanada notes there is at least 88 hours of top-rated horror movies for Canadians to consume this Halloween. (Unsplash)
Spooks and Chill study reveals Canada’s favourite horror flicks

88 hours of top-rated horror movies can fill COVID-19 Halloween

Burnaby RCMP responded to a dine-and-dash suspect who fell through a ceiling in March 2020. (RCMP handout)
VIDEO: Suspected dine-and-dasher falls through ceiling of Burnaby restaurant

A woman believed to be dashing on her restaurant bill fell through the kitchen ceiling

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

Join Black Press Media and Do Some Good

Pay it Forward program supports local businesses in their community giving

A can of Canada Dry Ginger Ale is shown in Toronto on Thursday Oct. 29, 2020. The maker of Canada Dry Ginger Ale has agreed to pay over $200,000 to settle a class-action lawsuit launched by a B.C. man who alleged he was misled by marketing suggesting the soda had medicinal benefits. THE CANADIAN PRESS/Joseph O’Connal
B.C. man’s lawsuit over marketing of Canada Dry ginger ale settled for $200K

Soda’s maker, Canada Dry Mott’s Inc., denied the allegations and any liability

Vancouver Island-based Wilson’s Transportation has expanded to fill some of the routes left unserviced by Greyhound as of Nov. 1, 2018. (Black Press files)
B.C. bus companies say they need help to survive COVID-19

Like airlines, motor coaches have lost most of their revenue

A deer was spotted in October 2020 in Prince Rupert, B.C., with a bright pink yoga ball stuck in its antlers. (Kayla Vickers/Chronicles Of Hammy The Deer Official Page)
Hammy 2.0? Prince Rupert deer spotted with bright pink yoga ball stuck in antlers

The BC Conservation Officer Service is aware of the deer roaming around the city

RCMP. (Phil McLachlan - Black Press Media)
Kelowna Mountie hit with 2nd lawsuit in 2 months for alleged assault

Const. Julius Prommer is accused of breaking a woman’s knee during while responding to a noise complaint

Most Read