(The Canadian Press)

(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.

Just Posted

1,001 Steps – along with Christopherson Steps – was closed by the City of Surrey last spring in an attempt to halt the spread of COVID-19. They are set to reopen this week, as a note on a city sign attests (inset). (File photo/Contributed photo)
South Surrey’s beach-access stairs set to reopen

Christopherson Steps, 1,001 Steps have been closed since April 2020 due to COVID-19 pandemic

Surrey council chambers. (File photo)
Surrey council endorses ‘public engagement’ strategy

Council approves ‘Public Engagement Strategy and Toolkit,’ and a ‘Big Vision, Bold Moves’ transportation public engagement plan

Surrey City Hall. (File photo)
Surrey council approves $7.3 million contract for street paving projects

City council awarded Lafarge Canada Inc. $7,326,667.95 for 15 road projects in North Surrey and one in South Surrey

Surrey city Councillor Brenda Locke. (File photo)
Locke seeks breakdown on what Surreyites get for taxes paid to Metro Vancouver

Surrey councillor presented motion to council Monday asking city staff to do a cost/benefit analysis

TEASER PHOTO ONLY
SURREY NOW & THEN: Little Theatre’s 59-year history ends with big plans for move to Langley

A former church, the theatre building/property has sold for close to $900,000

Canadian Prime Minister Justin Trudeau participates in a plenary session at the G7 Summit in Carbis Bay, England on Friday June 11, 2021. THE CANADIAN PRESS/Adrian Wyld
Canada donating 13M surplus COVID-19 vaccine doses to poor countries

Trudeau says the government will pay for 87 million shots to be distributed to poor countries

Montreal Canadiens goaltender Carey Price (31) is scored on by Vegas Golden Knights defenseman Alec Martinez, not pictured, during the second period in Game 1 of an NHL hockey Stanley Cup semifinal playoff series Monday, June 14, 2021, in Las Vegas. (AP Photo/John Locher)
Habs fall 4-1 to Vegas Golden Knights in Game 1 of NHL semifinal series

Match was Montreal’s first game outside of Canada in 2021

Kelowna-Lake Country MLA Norm Letnick, assistant deputy speaker at the B.C. legislature, presides over committee discussions. The legislature is completing its delayed spring session this week, with most MLAs participating by video conference. (Hansard TV)
B.C.’s daily COVID-19 infections dip below 100 over weekend

Only 68 new cases recorded Monday, four additional deaths

Robert Nelson, 35, died after being stabbed at a homeless camp in Abbotsford on April 7 of this year.
Mom pleads for information about son’s killing at Abbotsford homeless camp

Robert Nelson, 35, described as ‘man who stood for justice, honour, respect’

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

The BC Ferries website went down for a short while Monday morning following a provincial announcement that recreational travel between health authorities can resume Tuesday. (Black Press Media file photo)
BC Ferries’ website crashes in wake of provincial reopening announcement

Website back up now, recreational travel between health regions to resume as of Tuesday

The Kamloops Indian Residential School is photographed using a drone in Kamloops, B.C., Monday, June, 14, 2021. The remains of 215 children were discovered buried near the former school earlier this month. THE CANADIAN PRESS/Jonathan Hayward
Communities grapple with what to do with former residential and day schools

Some tear them down as a tool to help healing, others repurpose them as tools for moving forward

Police arrest the suspect in an attempted armed bank robbery on June 2 at the Scotiabank at Gladwin Road and South Fraser Way in Abbotsford. (Photo by Garry Amyot)
Abbotsford bank robbery suspect who was stopped by customers faces more charges

Neil Simpson now faces total of eight charges, up from the initial two

FILE – Provincial health officer Dr. Bonnie Henry talks about B.C.’s plan to restart the province during a press conference at Legislature in Victoria, Tuesday, May 25, 2021. THE CANADIAN PRESS/Chad Hipolito
B.C. watching U.K.’s COVID struggles but don’t think province will see similar pitfalls

Studies show that one dose of vaccine is only 33 per cent effective in preventing B.1.617.2 spread

Most Read