Introducing species to change ecosystems is a balancing act
Species hold ecosystems in a delicate balance. From time to time humans introduce non-native species to an ecosystem, because they may be needed for domestic work, as pets, for carrying loads or even for ...
Tiny number of Asian carp could be big problem for the Great Lakes
(Phys.org) —A tiny number of Asian carp could establish a population of the invasive fish in the Great Lakes, according to new research from the University of Waterloo.
Toward the origin of America's first settlers
The most supported traditional hypothesis points out that the earliest well-established human culture in the North American continent were the Clovis, a population of hunters who arrived about 13,000 years ...
Stocking Florida bass in Texas reservoirs may alter stream systems connected to stocked reservoirs
A genetic analysis by Baylor University biologists suggests that the stocking of Florida bass in Texas reservoirs impacts bass populations far beyond the actual stocking location.
Researchers find Asian needle ants displacing other aggressive invaders
Researchers from North Carolina State University have found that one of the most aggressive invasive ant species in the United States – the Argentine ant – appears to have met its match in the Asian needle ...
New study shows stable fisher population in the Southern Sierra Nevada
After experiencing years of population decline on the West Coast, a recent study examining fisher populations found that—at least in the southern Sierra Nevada—the animal's numbers appear to be stable.
Ancient DNA reveals humans living 40,000 years ago in Beijing area related to present-day Asians, Native Americans
An international team of researchers including Svante Pääbo and Qiaomei Fu of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, sequenced nuclear and mitochondrial DNA that had ...
A global approach to monitoring biodiversity loss
In contrast to climate change, there is no coordinated global system in place for measuring and reporting on biodiversity change or loss. An international team of biologists is now addressing this gap.
Research unveils how some medieval cultures adapted to rise of Islam
(Phys.org)—Medieval Afghanistan, Iran and the one-time Soviet Central Asian states were frontiers in flux as the Islamic Caliphate spread beyond the Arabian Peninsula in the seventh through 10th centuries.
Bumblebees do best where there is less pavement, more floral diversity
Landscapes with large amounts of paved roads and impervious construction have lower numbers of ground-nesting bumblebees, which are important native pollinators, a study from The University of Texas at Austin ...
Songbirds adapt to new urban environs thanks to rapid genetic evolution
(Phys.org)—Indiana University researchers have found evidence that a species of songbird that recently colonized an urban environment exhibits less stress and bolder behavior as compared to counterparts ...
River Thames invaded with foreign species, researchers show
The second longest river in the UK, the River Thames, contains 96 non-native species, making it one of the most highly invaded freshwater systems in the world.
The raccoon spreads dangerous diseases as it invades Europe
Furry, agile, intelligent and voracious: the raccoon is far from being a cuddly toy, which is what many people believe when they get one as a pet. It is more like an invader that escapes and is able to adapt ...
Survival without water: A key trait of an aquatic invader to spread
Nowadays, an increasing number of rivers and lakes are being invaded by exotic snails, which come from remote regions, and even other continents. Such species represent a threat to native species, as they ...