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Changing Timing of Life Bleeding Fertility Out of Nature, The Case of the Japanese Bumblebees

Changing Timing of Life Bleeding Fertility Out of Nature, The Case of the Japanese Bumblebees

Alex Wierbinski's picture

By Alex Wierbinski - Posted on 12 July 2019



Big Jap Bumbler & Its (Once) Perfectly Timed Plant Pal
Jap Bumblebee Visits Corydalis Ambigua after Overwintering, Yuimi Hirabayashi (Bihoro Museum), Hokkaido University.
Coming in for Landing: A far Northern Japanese Bumblebee visits Corydalis ambigua after overwintering, by Yuimi Hirabayashi (Bihoro Museum), Hokkaido University.


Changing Timing of Life Bleeding Fertility Out of Nature

Early arrival of spring disrupts the mutualism between plants and pollinators,
Hokkaido University, July 12, 2019.


Bummer for Jap Bumblers & Flowers…
"...demonstrated that early snowmelt results in the spring ephemeral Corydalis ambigua flowering ahead of the emergence of its pollinator, the bumblebee."

The Situation
"Global warming has affected the phenology of diverse organisms, such as the timing of plant flowering and leafing, animal hibernation and migration. This is particularly so in cold ecosystems, increasing the risk of disturbing mutual relationships between living organisms. It could also affect the relationship between plants and insects that carry pollen, but few studies have been conducted and the subject remains largely unknown." (We explore recent research through the links below...)

Natural Perfection
"The researchers examined Corydailis ambigua growing in cold-temperature forests in Hokkaido in northern Japan, and bumblebees, which collect nectar from the flowers. Usually the bloom of the flowers and emergence of the bumblebees are in sync."

"They monitored the plant and insect for 19 years in a natural forest of Hokkaido..."

The, "...bumblebees, which hibernate underground during winter..."

Study Proves…
"When the snowmelt is early, flowering tends to occur before the bees emerge, creating a mismatch. The wider the mismatch, the lower the seed-set rate due to insufficient pollination."

"Studying how this phenological mismatch will affect the reproduction and survival of plants and insects could give us clues to the larger question of how global warming is affecting the overall ecosystem."


Bottom Line

This mismatch driven by our unbalancing climate, weather, and ecosystems is typical of the changes we can see lobotomizing Nature all around the Northern Hemisphere...


Definition of Phenology

"Phenology is a key component of life on earth. Many birds time their nesting so that eggs hatch when insects are available to feed nestlings. Likewise, insect emergence is often synchronized with leaf out in host plants. For people, earlier flowering means earlier allergies. Farmers and gardeners need to know the schedule of plant and insect development to decide when to apply fertilizers and pesticides and when to plant to avoid frosts. Phenology influences the abundance and distribution of organisms, ecosystem services, food webs, and global cycles of water and carbon. In turn, phenology may be altered by changes in temperature and precipitation.

Changes in phenological events like flowering and animal migration are among the most sensitive biological responses to climate change. Across the world, many spring events are occurring earlier—and fall events are happening later—than they did in the past. However, not all species are changing at the same rate or direction, leading to mismatches. How plants and animals respond can help us predict whether their populations will grow or shrink – making phenology a “leading indicator” of climate change impacts."

USA National Phenology Network


The Timing of Life
Recent News & Research

Timing of Life Changing with Changing Seasons: Birds Paying the Price

The Timing and Character of Seasons have Changed: Nature-Ecosystems-Watersheds Crash

Climate Change News: Nature Losing its Integrated Timing; Life no longer supporting itself

Eco-Crashing News, 2019 Arctic Warming Specifics, Timing Spring

CHANGING ARCTIC SEASONS: Harbigner of Deadly Changes


A Big American Bumbler
Bumbler scraping salt off me on a real hot day, Jack Main Canyon, Yosemite.
An American Bumbler in Jack Main Canyon, Just to compare with the Jap Bumbler... The Jap Bumbler looks smooth & refined, compared to the rough look of this American Dude... This sucker was scraping layers of salt off my skin, balling it up, and stashing it. It tickled.


Trail Guide Entry

Lower Jack Main Canyon; Me & the Bumbler


Trail Guide Map

Jack Main Canyon down into the Grand Canyon of the Tuolumne,
Click red and black dots for more information


Living Things Forum


Jap Bumbles Like...

Corydailis ambigua,





Bee News


News of Man & Nature, July 2019








Nature News


Climate Destruction News



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Bear News

Spider Forum

Bird News

Small Mammals

Frogs and Reptiles

Butterfly News


Health and Fitness

Mountain Safety

Mosquito News

Female Trail

High Sierra History


Astro-Phys, Space, & Science News

High Sierra Geology News

Fish, Oceans, & Water News







Bee News, bees, research, Japanese bees, timing of life, Phenology, Corydailis ambigua, Japanese, bumblebees, global warming, timing, mismatch, Hokkaido, Japan

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