Before being colonised by the Vikings, Iceland was lush with forests but the fearsome warriors razed everything to the ground and the nation is now struggling to reforest the island.
Environment
Jul 17, 2019
13
21885
In and around the tangled roots of the forest floor, fungi and bacteria grow with trees, exchanging nutrients for carbon in a vast, global marketplace. A new effort to map the most abundant of these symbiotic relationships—involving ...
Environment
May 15, 2019
0
2740
Over 11 field seasons, between 1999 and 2010, ornithologist Cagan Sekercioglu trekked through the forests and coffee fields of Costa Rica to study how tropical birds were faring in a changing agricultural landscape. Through ...
Ecology
Apr 29, 2019
0
54
During the last ice age, which peaked around 21,500 years ago, glaciers covered large portions of North America, including the entire Great Lakes region. Once the ice retreated, the land was gradually repopulated by trees ...
Earth Sciences
Apr 8, 2019
2
2397
A national-scale study of U.S. forests found strong relationships between the diversity of native tree species and the number of nonnative pests that pose economic and ecological threats to the nation's forests.
Ecology
Mar 25, 2019
0
148
In the world of paleoecology, little has been known about the historical record of ecosystems in the West African highlands, especially with regard to glacial cycles amidst a shifting climate and their effects on species ...
An international team of microbiologists led by Klaus Nüsslein of the University of Massachusetts Amherst has found that a troubling net loss in diversity among the microbial organisms responsible for a functioning ecosystem ...
Environment
Dec 24, 2012
1
0
(PhysOrg.com) -- The size of leaves can vary by a factor of 1,000 across plant species, but until now, the reason why has remained a mystery. A new study by an international team of scientists led by UCLA life scientists ...
Plants & Animals
Jul 6, 2011
0
0
(PhysOrg.com) -- Many animal species such as snakes, insects and fish have evolved camouflage defences to deter attack from their predators. However research published in New Phytologist has discovered that trees in New Zealand ...
Plants & Animals
Jul 22, 2009
30
0
(PhysOrg.com) -- A new study led by the U.S. Geological Survey and involving the University of Colorado at Boulder indicates tree deaths in the West's old-growth forests have more than doubled in recent decades, likely from ...
Environment
Jan 22, 2009
7
0
