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Manzanita Bee in Trouble | High Sierra Backpacker

Manzanita Bee in Trouble

Alex Wierbinski's picture

By Alex Wierbinski - Posted on 03 July 2018




Manzanita Bee in Trouble

Climate change linked to potential population decline in bees,
Northwestern University, June 28, 2018.

"...climate change may drive local extinction of mason bees in Arizona and other naturally warm climates."

"In a two-year, in situ field experiment that altered the temperature of the bees' nests to simulate a warmer, future climate, 35 percent of bees died in the first year and 70 percent died in the second year. This is compared to a 1-2 percent mortality rate in the control group."

"This species of mason bee (Osmia ribifloris), often called the "blueberry mason bee," is native to the western United States and northern Mexico. This particular type of solitary bee builds nests inside of holes and cracks in dead tree stumps. Yet, as a primary pollinator of manzanita shrubs in the wild, this little-studied bee may have a big effect on its ecosystem."


In the Hot High Sierra Foothills

Arctostaphylos manzanita


“...which are visited by nectar-collecting bees that likely pollinate the flowers.”


Bees feel warming weather

Orchids & Bees

Climate change threatens domestic bee species



The Timing of Life is Out of Whack



Let's check out some High Sierra Manzanita:



Into the Manzanita


Tahoe to Yosemite Trail into Summit City Creek's Canyon

(The manzanita really begins when we drop off the end of Summit City's Canyon descending down into the manzanita lining the canyon of the North Fork of the Mokelumne River.) We've left the lodgepoles far behind, dropped through the firs, and are now into the heat of the pondarosa pines surrounded by manzanita.

And, we're sweating it... searching for fun in deep, dark, almost untracked, forests.



Carson Pass, Round Top & its Sisters

Summit City Creek Backpacking Map



Backpacking Miles: Carson Gap to Lake Alpine on the TYT









July 2018 News of Man & Nature





News from Nature


Climate Destruction News



Bee News

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



All High Sierra News





bee news mason bees manzanita pollinator at heat limit


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