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Latest Introduced species Stories

2014-04-10 11:20:32

Foreign species that are devastating water ecosystems could be "hitchhiking" around Britain on canoeists' and anglers' kit, according to a new study. Invaders like the killer shrimp, zebra mussel and American signal crayfish have already caused extensive environmental damage and millions of pounds of economic costs. The new research, led by the University of Leeds and the Centre for Environment Fisheries and Aquaculture Science (Cefas), found that the cleaning habits of anglers and...

Excessive Deer Populations Suppress Native Plant Biodiversity
2014-03-20 16:25:13

University of Miami Researchers from the University of Miami and University of Pittsburgh conclude that excess deer facilitate population explosion of exotic plants, while suppressing populations of native plants Too much garlic mustard growing in the forests of Pennsylvania? Actually, the problem may be too many deer. A new study published online in the Proceedings of the National Academy of Sciences concludes that an overpopulation of deer is the primary reason garlic mustard is...

Invasive Plants A Problem In Europe
2014-02-03 12:51:48

Pensoft Publishers Some introduced (i.e. non-native) plants become abundant, threaten species richness and the well-functioning of ecosystems, the economy, or health (plant invasion). Environmental policies that attempt to restrict the expansion of non-native species are based on a consensus among scientific experts that invasions are a serious environmental problem. An example of a problematic non-native species in many parts of the world is Fallopia japonica, the Japanese knotweed that...

Invasive Plant Thrives Because It Adapts Quickly To Local Climates
2013-10-17 14:25:07

University of Toronto University of Toronto research has found that purple loosestrife – an invasive species that competes with native plants for light and nutrients and can degrade habitats for wildlife – has evolved extremely rapidly, flowering about three weeks earlier as it has spread to northern Ontario. This has allowed populations of the species to thrive in the colder climate with a more than 30-fold increase in seed production. "The ability of invasive species to rapidly...

2013-03-14 17:55:57

American bullfrogs are native to eastern North America but have been transported by people to many other parts of the globe, and other parts of North America, where they have readily established populations and become an invasive alien menace to native ecosystems. In the largest study of its kind to date, the stomach contents of over 5,000 invasive alien American bullfrogs from 60 lakes and ponds on southern Vancouver Island were examined to identify the native and exotic animals that they...

Scientists Raise Concerns Over Tsunami Debris Carrying Invasive Species
2013-03-10 08:25:22

redOrbit Staff & Wire Reports - Your Universe Online Two years after the earthquake and tsunami that devastated Japan, researchers in the US and Canada are concerned about the possible damage that could be caused by invasive species that have found their way to North America on debris resulting from the 2011 disaster. According to UPI, experts in the northwest US and Canada are having difficulty determining whether or not marine life washing ashore on the debris will be a threat to...

Effect Of Invasive Plants On Species Richness Depends On Scale
2013-01-17 14:41:43

Washington University in St. Louis In Missouri forests, dense thickets of invasive honeysuckle decrease the light available to other plants, hog the attention of pollinators, and offer nutrient-stingy berries to migrating birds. They even release toxins to make it less likely native plants will germinate near them. Why, then, are recent popular science articles recommending a recalibration of the traditional no-tolerance attitude toward non-native species, suggesting that we´ve...

2013-01-16 10:37:00

Ecologists at the University of Toronto and the Swiss Federal Institute of Technology Zurich (ETH Zurich) have found that, given time, invading exotic plants will likely eliminate native plants growing in the wild despite recent reports to the contrary. A study published in Proceedings of the National Academy of Sciences (PNAS) reports that recent statements that invasive plants are not problematic are often based on incomplete information, with insufficient time having passed to observe...

Invasive Species Abound In The River Thames
2012-10-10 05:02:07

Alan McStravick for redOrbit.com - Your Universe Online A new study out of the U.K. points out what many ecosystems of the world have already known. In this new study, scientists from the Queen Mary, University of London, claim that almost 100 non-native freshwater species have successfully invaded the River Thames, making it one of the world´s most highly invaded freshwater systems. Published in the journal Biological Invasions over the weekend, scientists suggest that previous...

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2012-08-20 18:46:54

Brett Smith for redOrbit.com - Your Universe Online Hawaiian researchers can now add fish to the phrase “the best laid-plans of mice and men, often go awry," as John Steinbeck once translated from a famous Robert Burns´ poem. An avid fisherman himself, Steinbeck would no doubt appreciate the problems caused by three invasive species of fish introduced to the Pacific archipelago 55 years ago. In an attempt to better understand how an invasive species comes to dominate a...


Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'