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In January 2015, the Des Moines Water Works "sued drainage districts in three northern Iowa counties, claiming the tiles there act as a conduit that accelerates the movement of fertilizer from farm fields into Iowa waterways". [14] Between 2010 and 2015 more than 60 Iowa cities and towns had high nitrate levels in drinking water. [14]
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Non-native invasive species can disrupt ecosystems because they do not have natural predators, or other ecological checks-and-balances. Thus, with less competition from native species, non-native populations can explode. [9] Invasive insects and pathogens have eliminated entire tree species from forests of the United States in as little as decades.
The economic impacts of invasive species can be difficult to estimate especially when an invasive species does not affect economically important native species. This is partly because of the difficulty in determining the non-use value of native habitats damaged by invasive species and incomplete knowledge of the effects of all of the invasive species present in the U.S. Estimates for the ...
Iowa has 28 species of snakes, five of which are venomous. Snakes form a key part of the ecosystems they inhabit, helping to keep populations of mice, squirrels, other small animals and even ...
These are lists of invasive species by country or region. A species is regarded as invasive if it has been introduced by human action to a location, area, or region where it did not previously occur naturally (i.e., is not a native species), becomes capable of establishing a breeding population in the new location without further intervention by humans, and becomes a pest in the new location ...
This is a list of invasive species in North America.A species is regarded as invasive if it has been introduced by human action to a location, area, or region where it did not previously occur naturally (i.e., is not a native species), becomes capable of establishing a breeding population in the new location without further intervention by humans, and becomes a pest in the new location ...
Abby Deneau points out a large patch of invasive knotweed on Tuesday, Aug. 2, 2022, at Grand Woods Park in Lansing. Michigan's invasive species watchlist includes information on several bugs ...