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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.
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 .
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 .
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.
Lowdermilk worked with the Belgian Relief Effort (B.R.E., active 1914–1916 in Belgium and France) after World War I, [1] [dubious – discuss] in China in the 1920s to help avert famine, with the Soil Conservation Service, in fascist Italy in the 1930s, in the United States, and in Mandatory Palestine planning land and water use.
Habitat conservation is a management practice that seeks to conserve, protect and restore habitats and prevent species extinction, fragmentation or reduction in range. [1] It is a priority of many groups that cannot be easily characterized in terms of any one ideology .
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
Wetland conservation is aimed at protecting and preserving areas of land including marshes, swamps, bogs, and fens that are covered by water seasonally or permanently due to a variety of threats from both natural and anthropogenic hazards. Some examples of these hazards include habitat loss, pollution, and invasive species.