What are endemic species? explain the causes of extinction of endemics?
Answers
Explanation:
Endemic Species are species of those plants and animals which are found in just one particular region and nowhere else in the world. In other words, it can be said that endemic species are those which are only found in a given region or location and nowhere else.
habitat destruction and degradation have become the primary causes of endangerment and extinction for animals and plants. Invasive species, pollution, and disease are also major threats, while overexploitation of animals and plants continues
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Explanation:
A species is considered to be “rare” if it exhibits any one of the following attributes: (1) naturally occurs in a narrow geographical area, (2) occupies only one or a few specialised habitats, (3) forms only small population(s) in its range. An “endemic” species, however, grows naturally in a single geographical area, the size of which could be either narrow or relatively large. Not all endemic species are rare, just as not all rare species must necessarily be endemic. Many rare and/or endemic species exhibit one or more of the following attributes which make them especially prone to extinction: (1) narrow (and single) geographical range, (2) only one or a few populations, (3) small population size and little genetic variability, (4) over-exploitation by people, (5) declining population sizes, (6) low reproductive potential, (7) the need for specialised ecological niches, (8) growth that requires stable and nearly constant environments. When habitats of a rare and/or endemic species are damaged and/or fragmented by various human activities, the distribution ranges and population sizes of the species will be reduced, leaving them vulnerable to extinction at a much higher rate than other comparable species. Species that experience any of the above attributes must be given priority and monitored and managed carefully in an effort to promote genetic conservation.