Search results
Results from the WOW.Com Content Network
The IUCN estimates that 42,100 species of the ones assessed are at risk for extinction. [1] Expanding to all existing species, a 2019 UN report on biodiversity put this estimate even higher at a million species. It is also being acknowledged that an increasing number of ecosystems on Earth containing endangered species are disappearing.
Conservation biology is the scientific study of the nature and status of Earth's biodiversity with the aim of protecting species, their habitats, and ecosystems from excessive rates of extinction. [ 24 ] [ 25 ] It is an interdisciplinary subject drawing on science, economics and the practice of natural resource management .
Natural resource management (NRM) is the management of natural resources such as land, water, soil, plants and animals, with a particular focus on how management affects the quality of life for both present and future generations (stewardship). Natural resource management deals with managing the way in which people and natural landscapes interact
Claus divides conservation into conservation-far and conservation-near. Conservation-far is the means of protecting nature by separating it and safeguarding it from humans. [ 29 ] Means of doing this include the creation of preserves or national parks.
The book's title is similar to a 1995 book title, The Sixth Extinction by Richard Leakey and Roger Lewin. Also included are excerpts from interviews with a forest ecologist , atmospheric scientist Ken Caldeira , wildlife and conservation experts, a modern-day geologist, and fungus researchers in New England and New York State .
America had its own conservation movement in the 19th century, most often characterized by George Perkins Marsh, author of Man and Nature.The expedition into northwest Wyoming in 1871 led by F. V. Hayden and accompanied by photographer William Henry Jackson provided the imagery needed to substantiate rumors about the grandeur of the Yellowstone region, and resulted in the creation of ...
Water covers 71% of the Earth's surface. Of this, 97.5% is the salty water of the oceans and only 2.5% freshwater, most of which is locked up in the Antarctic ice sheet. The remaining freshwater is found in lakes, rivers, wetlands, the soil, aquifers and atmosphere.
Soil conservation is the prevention of loss of the topmost layer of the soil from erosion or prevention of reduced fertility caused by over usage, acidification, salinization or other chemical soil contamination