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The second report, Invasive alien species indicators in Europe discusses the methodological approach in bringing this data together. The most common reason species are introduced elsewhere is for horticulture, while others may be brought into new areas for other reasons including farming, hunting, and fishing, or as pets, the report notes. Transport is not always intentional — for example, zebra mussels have stowed away in the ballast water of ships to proliferate in European lakes. Increasing trade and tourism in recent decades may have led to increasing numbers of alien species.
Climate change may also play a role in the spread of these species, the report says, making some areas more favourable to plants and animals originally from elsewhere. Invasive alien species are one of the main threats to biodiversity. The EU Biodiversity Strategy has policy targets which aim to address the problem. A European Green Deal, outlining more ambitious action on climate and Read more. Software updated on 29 August from version Code for developers.
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Invasive Species Are on the Move
Topics: Environment and health , Biodiversity — Ecosystems ,. Invasive alien species pose greater risks than previously thought for biodiversity, human health and economies, according to two new reports from the European Environment Agency EEA. Impacts on human health For humans, one of the most dangerous effects of invasive alien species is as a carrier of disease.
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The Asian tiger mosquito has been linked to more than 20 diseases, including yellow fever and chikungunya fever. It has come to Europe mainly through the intercontinental trade in used tyres, and is now prevalent in several southern European countries, especially Italy. Climate change projections show that the mosquito will likely extend its range further north in coming years. Climate change is also enabling the spread northward of the common ragweed. The plant is originally from North America, the seeds first coming to Europe in mixes of grain intended as bird feed.
It is a powerful trigger of hayfever and other allergies. Changing landscapes are another result of invasive alien species. For example, the red palm weevil is destroying large numbers of palms in the Mediterranean region, transforming the green spaces in cities. There are also effects on ecosystems which indirectly affect humans. For example, the pollination carried out by honeybees may be affected by invasive alien species - the yellow-legged hornet, native to Asia, has been found to devastate beehives in France.
Species such as the Spanish slug, now found in most European countries, can devastate crops. Other species such as the pervasive zebra mussel can also cause high costs by fouling water filtration plants and water cooling reservoirs of power plants. Invasive species harming biodiversity Invasive alien species harm native species through predation, as is the case of feral cats killing smaller creatures. Even species native to the U. Sometimes these dense colonies even alter the air temperature and soil chemistry around them, further squeezing out other plants and the animals that depend on them.
Native Plant Trust works with towns, government agencies, universities, and other organizations throughout New England to assess how invasive plants are affecting the landscape and to control their spread. In addition to researching how invasive species are affecting the landscape, we train volunteers to monitor them, compile data, and create tools to track and identify these plants:. Naturally biodiverse areas have shown more robust resistance to invasive species.
Here are a few ways to maintain and support thriving natural areas near you:. Keep more invasive species from entering the region. Many states prohibit selling or importing certain plants. Invasive species thrive in soil disturbed by construction and other activity.
Ten of the World’s Most Invasive Species
Protect newly disturbed places on your property by planting them with natives. Invasive species outbreaks are easier to squelch when they are small and the plants are young. Some species require different methods of control, depending on how they reproduce. Invasive species impacts cost the American economy billions of dollars each year. This is purple loosestrife Lythrum salicaria , a common invasive species, which was sold in some New England nurseries until recently.
City of Chicago :: Invasive Species
Learn how to identify invasive plants and native lookalikes on our regional plant-identification tool, Go Botany. We recruited, trained, and coordinated volunteers to gather this information in the field.
Our Conservation and Research Plans for rare plant species in the region have guided the recovery of several rare plant populations from stresses that include invasive species.
Related Invasive Species
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