Researchers reporting in Current Biology on March 5 have found that a tropical species of hummingbird called a black jacobin makes vocal sounds with an unusually high-frequency pitch that falls outside birds' normal hearing ...
Plants & Animals
Mar 5, 2018
0
83
Diploid vertebrates have two sets of chromosomes, one from each parent. In contrast, polyploidy, meaning to possess three or more sets of chromosomes, is very rare in animals. To find out how new vertebrate species have evolved, ...
Plants & Animals
Feb 21, 2018
0
60
A new study led by ANU has mapped priority areas around the world to protect thousands of mammal species, with a focus on species with few close relatives including echidnas in Australia and PNG and lemurs in Madagascar.
Ecology
Oct 27, 2017
0
100
The world's tropical forests are in "a critical state" in which the extinction of rare tree species could be a tipping point, say scientists who have developed an analytical method to map their biodiversity.
Environment
Oct 18, 2017
0
631
A team led by Smithsonian scientists in Panama exposed a key to understanding tropical tree diversity by studying how fungi interact with seeds that linger in the ground. Despite a smorgasbord of species available to choose ...
Ecology
Oct 2, 2017
0
178
Based on data from 10 long-term forest monitoring plots, including seven from the Smithsonian's ForestGEO network, a team led by Jacob Usinowicz during his doctoral dissertation at the University of Wisconsin-Madison, provides ...
Environment
Sep 20, 2017
0
396
Evolutionary biologists long have supposed that when species colonize new geographic regions they often develop new traits and adaptations to deal with their fresh surroundings. They branch from their ancestors and multiply ...
Evolution
Sep 13, 2017
0
45
When both partners benefit from a relationship—be they husband and wife or pollinator and flower—the relationship is known as a mutualism. But sometimes partners do not deliver their side of the bargain while still reaping ...
Plants & Animals
Jun 20, 2017
0
34
Warming temperatures are prompting some tree species in the Rocky Mountains to "migrate" to higher elevations in order to survive.
Ecology
May 8, 2017
0
298
The first ever global database of trees on Wednesday revealed that 9,600 tree species are threatened with extinction and identified a total of 60,065 in existence.
Environment
Apr 5, 2017
1
583
