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Latest Invasive species Stories

2011-09-27 09:37:17

Researchers have found that a species invasion that starts at the upstream edge of its range may have a major advantage over downstream competitors, at least in environments with a strong prevailing direction of water or wind currents. Scientists from the University of Georgia, University of New Hampshire, Smithsonian Environmental Research Center and University of Vermont studied populations of European green crab, Carcinus maenas. The species was introduced to the East Coast of North...

2011-09-22 21:42:54

Evolutionary traps, invasive yellow starthistle´s favorable response to carbon dioxide and plant breeding for harmony between agriculture and the environment Evolutionary traps in human-dominated landscapes A study published in the September issue of Ecology looks at how human activities can diminish the usefulness of an ornamental trait, such as colorful feathers, as a signal of fitness. Cardinals, for example, need carotenoids in their diet to produce their red plumage; brilliant...

2011-09-19 23:22:46

Researchers at Oregon State University have shown for the first time that loss of biodiversity may be contributing to a fungal infection that is killing amphibians around the world, and provides more evidence for why biodiversity is important to many ecosystems. The findings, being published this week in Proceedings of the National Academy of Sciences, used laboratory studies of amphibians to show that increased species richness decreased both the prevalence and severity of infection...

2011-09-15 13:03:21

Florida has the world´s worst invasive amphibian and reptile problem, and a new 20-year study led by a University of Florida researcher verifies the pet trade as the No. 1 cause of the species´ introductions. From 1863 through 2010, 137 non-native amphibian and reptile species were introduced to Florida, with about 25 percent of those traced to one animal importer. The findings appear online today in Zootaxa. “Most people in Florida don´t realize when they see an...

2011-09-12 11:22:04

Non-native, wood-boring insects such as the emerald ash borer and the Asian longhorned beetle are costing an estimated $1.7 billion in local government expenditures and approximately $830 million in lost residential property values every year, according to study by a research team that included scientists with the U.S. Forest Service, Northern Research Station. The research effort was funded by The Nature Conservancy and supported by the University of California / Santa Barbara's National...

Invasion Of The Earthworms
2011-09-12 09:22:21

  Non-native earthworms are damaging hardwood forests [ View the Science Nation Video ] Think of earthworms and a few things come to mind: they make great bait for fishing, they aerate the soil, and they're an excellent addition to a compost pile. But what a lot of people don't know is many earthworms are actually invasive species. "The western Great Lakes region, which is the area we're focused on, has no native earthworms," says ecologist Cindy Hale, a research associate...

Invasive Insects Cost Billions
2011-09-11 04:15:13

  Homeowners and taxpayers are picking up most of the tab for damages caused by invasive tree-feeding insects that are inadvertently imported along with packing materials, live plants, and other goods. That's the conclusion of a team of biologists and economists, whose research findings are reported in the journal PLoS One last week. The authors explain that non-native, wood-boring insects such as the emerald ash borer and the Asian longhorned beetle exact an estimated $1.7...

2011-09-07 11:09:57

A U.S. Department of Agriculture (USDA) aerial photography survey of 38,000 wildfire-burned acres in Idaho provided what is believed to be the first evidence that the invasive leafy spurge weed is displacing seedlings of native mountain big sagebrush. Terry Booth, a rangeland specialist with the Agricultural Research Service (ARS) Rangeland Resources Research Unit in Cheyenne, Wyo., designed the survey using a technique he developed called Very Large Scale Aerial (VLSA) imagery. The survey...

2011-09-02 16:49:59

Northwestern University professor Dirk Brockmann and his group at the McCormick School of Engineering and Applied Science have investigated the outcomes of a previously ignored mechanism in modeling how humans travel. By challenging a long-held assumption, Brockmann, associate professor of engineering sciences and applied mathematics, hopes to create models that can more accurately predict the spread of disease and the spread of human-mediated bioinvasions. "Though there are many...

2011-08-15 09:00:00

Findings demonstrate substantial returns on screening program relative to current costs of open-door policy WASHINGTON, Aug. 15, 2011 /PRNewswire-USNewswire/ -- In a major new study published in the journal Ecological Economics, scientists and economists have, for the first time, statistically demonstrated the net benefits of doing risk assessments for the live wild animal trade. The study estimates that the long-term expected net benefits from implementing a risk screening system range...


Latest Invasive species Reference Libraries

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2008-04-30 23:09:30

The Pacific Oyster (Crassostrea gigas), is the native oyster of the Pacific coast of Korea, Japan and China. It has been introduced to North America, especially in Puget Sound, Washington, and to the Australian states of Tasmania and South Australia. It is an important commercial harvest in all of these places, as well as New Zealand where the Pacific oyster has replaced the native rock oyster, Crassostrea glomerata, as the main commercial species. The Pacific oyster is an invasive species...

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Word of the Day
holluschickie
  • A 'bachelor seal'; a young male seal which is prevented from mating by its herd's older males (mated bulls defending their territory).
This comes from the Russian word for 'bachelors.'
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