Eurasian spruce bark beetles (Ips typographus) burrow into the bark of Norway spruce (Picea abies) trees where they mate and lay their eggs. Major outbreaks in Europe have decimated millions of hectares of conifer forests. ...
Plants & Animals
Feb 21, 2023
0
121
A rare discovery during a midday walk: On a spruce tree, an employee of the Swiss Federal Institute for Forest, Snow and Landscape Research WSL discovered not only a new species of fungus, but also a genus previously unknown ...
Plants & Animals
Feb 15, 2023
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28
Clearcutting and wildfires decimated the red spruce, once the dominant, high-elevation tree species in West Virginia, in the late 1800s and early 1900s. Nowadays, only 10% of the state's historic red spruce coverage remains ...
Plants & Animals
Aug 3, 2022
0
95
A new study from scientists at Uppsala University shows that it took more than 10 millennia from when the first spruces returned to Sweden after the glacial stage of the last Ice Age until the species became widespread. This ...
Ecology
Apr 11, 2022
0
708
A new study, published in the Proceedings of the National Academy of Sciences (PNAS), finds that black spruce trees—a key species on the boreal landscape for millennia—are losing their resilience and capacity to regenerate ...
Ecology
Oct 25, 2021
1
233
Researchers have successfully mapped the entire genome of the Eurasian spruce bark beetle. The breakthrough paves the way for new research into bark beetles and better prospects for effective pest control of a species that ...
Plants & Animals
Sep 29, 2021
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66
Yellowstone National Park is famous for harsh winters but a new study shows summers are also getting harsher, with August 2016 ranking as one of the hottest summers in the last 1,250 years.
Earth Sciences
May 20, 2021
5
231
When trees die during a period of drought, they die of thirst. Researchers from the University of Basel have demonstrated in a field study that a rapid collapse in the hydraulic system is responsible for tree death. And they ...
Plants & Animals
Apr 13, 2021
1
984
When southern Rocky Mountain forests are viewed from a distance these days, it may not look like much is left. Large swaths of dead, standing Engelmann spruce trees tell the tale of a severe regional spruce beetle epidemic ...
Ecology
Oct 15, 2020
0
47
In boreal forest during late winter, freezing temperatures are typical but at the same time the sun can already shine very brightly. This combination is especially dangerous to evergreen plants, such as conifers. The chlorophyll ...
Plants & Animals
Aug 18, 2020
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21
