● It is the DNA that is collected from a variety of environmental samples such as soil, seawater, snow or air rather than directly sampled from an individual organism.
● As various organisms interact with the environment, DNA is expelled and accumulates in their surroundings from various sources.
● Animals shed DNA through their breath, saliva, fur or faeces, mucus, gametes, shed skin, carcasses & hair into the environment.
● e-DNA can potentially identify and monitor endangered species.
● It could help understand the composition of animal communities & detect the spread of non-native species.
In its current form, this method cannot provide accurate data for population census.
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