Tag Archives: tree

Tree news elsewhere, Dec 11, 2022

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New York City’s Popular Online Tree Map Gets a Big Update

Satellites detect no real climate benefit from 10 years of forest carbon offsets in California

Extinctions, shrinking habitat spur ‘rewilding’ in cities

Sale of oil and gas permits casts shadow over world’s second-largest rainforest

Brazil, Indonesia and DRC in talks to form ‘Opec of rainforests’

Saving the dragon’s blood: how an island refused to let a legendary tree die out

Bear dens and ancient trees face onslaught of logging in Poland

Fewer than 1% of ‘illegal’ tree felling cases in England result in convictions

Canada accused of putting its timber trade ahead of global environment

A UK tree provides hundreds of pounds of benefits a year, report finds

Stop burning trees to make energy, say 650 scientists before Cop15 biodiversity summit

You grow girl: how Aretha, Nina and Dolly can help save the ash tree

EU agrees to law preventing import of goods linked to deforestation

How mixing farms with forests can help the UK reach net zero

Last year’s deforestation pledge is off to a slow start

Young Kenyan tree activist speaks up for Africa at COP27

Forestry Leaders Scramble to Turn Massive New Funding Into Trees

For Tribes, Reforesting Means Reconnecting to History, Culture

 

What is attacking PNW Maples?

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From the Kitsap Sun – subscription required:
A white, powdery fungus attacking the northwest’s maple trees has spread across Kitsap

From Dept. of Environmental and Forest Sciences, University of Washington:
Bigleaf Maple Decline in Western Washington (research study results at link to left)

Primary Goal: Examine the association between biotic and abiotic factors, and bigleaf maple decline.
Outcome: Determining cause of the decline will guide potential mitigation and management options.

Bigleaf maple decline continues to be a scientific mystery
Forest pathologists in Washington have been investigating the decline of bigleaf maple (Acer macrophyllum) in the Pacific Northwest since it emerged in 2010. Recently, Dave Shaw, OSU Extension forest health specialist, has noticed the maple’s decline in Oregon has intensified and hypothesized that it may be attributed to something other than drought, winter weather, canker diseases, squirrel damage or other common culprits. Bigleaf maple decline has been reported throughout the tree’s entire geographic range, including in California, Oregon, Washington and British Columbia……(more at link above)

The edges of the leaves in the upper crown of this bigleaf maple are chlorotic and very distinct.

These leaves from the crown of a bigleaf maple are small, leathery and have chlorotic edges.

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