Search results
Results from the WOW.Com Content Network
Overexploiting sea otters resulted in cascade effects which destroyed kelp forest ecosystems. Overexploitation of species can result in knock-on or cascade effects. This can particularly apply if, through overexploitation, a habitat loses its apex predator. Because of the loss of the top predator, a dramatic increase in their prey species can ...
Mass extinctions are characterized by the loss of at least 75% of species within a geologically short period of time (i.e., less than 2 million years). [18] [51] The Holocene extinction is also known as the "sixth extinction", as it is possibly the sixth mass extinction event, after the Ordovician–Silurian extinction events, the Late Devonian extinction, the Permian–Triassic extinction ...
[5] [6] This can be seen for example in the effects of climate change on biomes. This anthropogenic extinction may have started toward the end of the Pleistocene, as some studies suggest that the megafaunal extinction event that took place around the end of the last ice age partly resulted from overhunting. [7]
Jungle burned for agriculture in southern Mexico. Tropical rainforests have received most of the attention concerning the destruction of habitat. From the approximately 16 million square kilometers of tropical rainforest habitat that originally existed worldwide, less than 9 million square kilometers remain today. [7]
The effect on realized niches could be incredibly strong, especially when there is an absence of more traditional interference or exploitative competition. A real-world example was studied in the late 1960s, when the introduction of snowshoe hares (Lepus americanus) to Newfoundland reduced the habitat range of native arctic hares (Lepus arcticus).
The contest is held every two years, and looks for the biggest trees of each species across the state. Skip to main content. 24/7 Help. For premium support please call: 800 ...
Biodiversity loss has bad effects on the functioning of ecosystems. This in turn affects humans, [ 45 ] because affected ecosystems can no longer provide the same quality of ecosystem services , such as crop pollination , cleaning air and water, decomposing waste, and providing forest products as well as areas for recreation and tourism .
On Dec. 7 at North Henderson High School, 11th grader Citlally Diaz, 17, was honored for winning one of just four $3,000 scholarship grand prize awards out of thousands of entries across the country.