Observing the Decline of the Doomed Forests in the Southwestern US

Alex Wierbinski's picture

By Alex Wierbinski - Posted on 21 December 2018


Observing the Decline of the Doomed Forests in the Southwestern US

Southwest forest trees will grow much slower in the 21st century,
University of Arizona, December 18, 2018.


75% Productivity Decline
“Southwest forests may decline in productivity on average as much as 75 percent over the 21st century as climate warms...”

Tree Core Survey Recovery
The First Hundred Cores of 20,000 lost cores, John D. Shaw, US Forest Service
“...based on a treasure trove of about 20,000 unanalyzed tree cores discovered in a Utah laboratory about a decade ago. The annual growth rings visible in tree cores reflect each year's climatic conditions.”

Photo by John D. Shaw, US Forest Service.

“The new collection of Forest Inventory and Analysis tree cores turned up when scientists at the U.S. Forest Service Rocky Mountain Research Station in Ogden, Utah, were moving from one building to another. The researchers were surprised to find a bunch of dusty boxes filled with tree cores that had never been analyzed.”

Average Trees -75%
Fringe Trees DOOMED
"The Joe Schmoe trees will experience a 75 percent reduction in growth and the trees on the edge--according to our analysis--are pretty much doomed."

That’s an Improvement!
“...analysis revealed that growth of the ordinary forest trees would not be reduced as much under climate change as the trees whose records are included in the (old, fringe-tree data) ITRDB.”


SW Pinyon Dying Fast

Tree News, Widespread Pinyon Pine Mortality Throughout Much of the Southwestern U.S.


High Sierra Carnage

TREE & CLIMATE NEWS: High Sierra Forest Succession Disaster Looms

ECO-CRASH NEWS: Tree Mortality, High Sierra Carnage



California, broadly

Tree News, Dire Warning for California Plants: Half of You are Dead by 2100



Southwest Climate Research

SOUTHWEST UNITED STATES: Rearranging the Deck Chairs on the Titanic Southwest Drought

Climate Change News: Whole Southwest of US Undergoing Aridification

Vegas-Style: Laying the Odds of Mega-Drought Destruction in Southwest US

2018 Water Woes Deepening in the Southwest

Trend of "Aridification" of Southwest Continues: Diminishing Annual Colorado Snowpack & River Flows



Climate Models

Climate Models Underestimating Scale of Change: Twice What Climate Models Predict?

Nature is Crashing Hard: More-severe climate model predictions could be the most accurate

Climate Change News. Not an Improving Situation: Improved Climate Modeling Sees the Grim Future of the US: More Extremes Here



Climate-Driven Anthropocene: Killing Ourselves and Everything Else with Heatwaves

More Coordinated Global-Scale Heatwaves in Our Future


Eco Crash News, 2018: Observing Our Rapidly Shifting Seasons and Ecosystems

STUDY: Greenhouse Gasses Triggering More Changes Than We Can Handle




All Tree & Plant News




December 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





decline of Southwestern US forests as climate changes global warming continues


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