资讯

来自MSN5 个月
Try These 5 Types Of Spruce Trees – Easy Ways To Add Evergreen Beauty To Every Garden
In nature, you’ll see several types of spruce trees (Picea spp.) that are beautiful, rugged evergreens capable of lasting several centuries and withstanding extreme winter cold. They are amongst ...
The Register-Guard2 年
Extinction-level threat: Invasive beetle expected to decimate Oregon ash trees
The USDA estimates there are 8.7 billion ash trees among 16 species in the United States — all of them are at risk. Oregon ash is the only ash species native to the Pacific Northwest ...
OPB27 天
Invasive emerald ash borer could wipe out Oregon’s ash trees. Here’s how you can help
Now it’s killing ash trees in Oregon, which don’t have any defenses against this invader. “They’re basically sitting ducks,” said Wyatt Williams, an invasive species specialist for the ...
Capital Press1 年
Spread of emerald ash borer jeopardizes Oregon trees
Oregon ash trees are in “extreme danger” of going ... To report possible sightings of emerald ash borer, call the Oregon Invasive Species Hotline at 1-866-INVADER, or visit ...
Fox 12 Oregon2 年
Emerald ash borer could take toll on several native Oregon species
Ash trees are typically the ones you’ll find ... It could mean a very difficult next few years in the state for a variety of species. Oregon biologists had been fearing the moment of finding ...
NBC News2 年
'Firmageddon': Researchers find 1.1 million acres of dead trees in Oregon
The people who know the trees best say there are many signs of problems in Oregon. “We’re seeing forms of stress in all of our species of trees,” said Christine Buhl, a forest entomologist ...
Fox 12 Oregon8 个月
Experts warn emerald ash borers pose risk to Oregon trees
It’s called the emerald ash borer, a type of beetle that lays ... and visited areas in Hillsboro where ash trees are plentiful. Dr. Max Ragozzino with the Oregon Department of Agriculture ...