Which species in ecological science are called as edge species?
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Answer:
Evolutionarily Distinct and Globally Endangered (EDGE) species are animal species which have a high EDGE score, a metric combining endangered conservation status with distinctiveness of taxon. Distinctive species have few closely related species, and EDGE species are often the only surviving member of their genus or even higher taxonomic rank. The extinction of such species would therefore represent a disproportionate loss of unique evolutionary history, biodiversity and potential for future evolution.
Some EDGE species, such as elephants and pandas, are well known and already receive considerable conservation attention, but many others, such as the Vaquita (the world’s rarest cetacean) the bumblebee bat (arguably the world’s smallest mammal) and the egg-laying long-beaked echidnas are highly threatened yet remain poorly understood and are frequently overlooked by existing conservation frameworks. Recent research indicates that 70% of the world’s most threatened and evolutionarily distinct mammal species are currently receiving little or no conservation attention.
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