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Eastern hemlock is the most common conifer in many northeastern forests. [10] The loss of these species from the forest represents a loss of the contributions they made to the function of the ecosystem. Co-existing tree and plant species will gain in the void left by the affected species, but often providing different functions.
The Jordan Aquifer is the largest source of groundwater, extending from northeast Iowa to south central Iowa, and is the source of much of Iowa's agricultural and industrial water. Besides pollution, the aquifer is threatened by overuse in well-source irrigation, ethanol production, and decreased replenishment caused by extensive field tilling.
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 ...
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The predominant plant community at Whiterock is oak-dominated forest, covering about 1,200 acres of the total landscape. Oak savanna, an ecosystem that was once widely distributed in the state of Iowa, is currently one of the most endangered in the region, with less than 0.1% of the original tract remaining.
Mini-forests have been planted around the world, but Iowa's first is the result of an environmentally-focused book club's members wanting to do something. A climate change book club needed hope.
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 ...
Invasive earthworms have caused a decrease in diversity, seedling populations, forest floor organic matter volume, and overall habitat quality. In addition, there is often an increase in invasive species and a decreased diversity of non-plant organisms. Some species that provide important biological niches to the ecosystem may be eradicated.