Non Native Invasive Species

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Non-native invasive species have caused conservationists and ecologists to stew. In simpler terms a non-native species is a species that is an alien to an environment, but will not cause danger. Invasive species are species that causes harm. More specifically, a non-native invasive species are a particular type of species that are foreign to an environment and causes risk towards that particular environment. Non-native invasive species, invasive species and NNS will be used interchangeably. Usually, invasive species arrive in an environment due to human’s bringing them into the country from foreign areas. There are ongoing arguments about whether the threat of non-native invasive species is significant or not. Currently, the debates have stated …show more content…
For example, “Holland et all. (1995) identified the [zebra] muscles are the principal reason that eutrophication abated in Lake Erie, while others have noted similar effects in other lakes and rivers (e.g., Strayer et. al., 1999)” (Sagoff 2005). The significant reason why zebra muscles are taking over is due to competition for resources. The zebra muscles can out-compete the other native species for resources allowing them to thrive. Also, native muscles in the Great Lakes rest on hard surfaces which are being occupied by zebra muscles. If the native muscle gets to the hard surface first, the zebra muscles will lay on top of the natives and kill them. The most common invasive plant species is the purple loosestrife; “the invasion of purple loosestrife into North American freshwater wetlands alters decomposition rates and nutrient cycling, leads to reductions in wetland plant diversity, reduces pollination and seed output of the native Lithium alatum, and reduces habitat suitability for specialized wetland bird species…” (Blossey, Skinner, & Taylor, 2001). The purple loosestrife can outcompete almost any plant and any animal. They prominent reasons they outcompete most species is because they can withstand almost any soil type and environmental conditions; even habitats that have been destroyed. This plant species invades fast and takes down any species in its way leading to a decline in biodiversity. When there is the introduction of non-native invasive species they overrule the native species and shrink their variety down leading to a drop in

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