I would think of genetic drift to go hand-in hand with environmental adaptation. So, I wouldn't think it would cause endangered species. However, it also creates subspecies. For example, there is the "Northern White Rhino" and the "Southern White Rhino". The two are very similar, but considered different species due to population isolation and millennia of genetic drift. Unfortunately, there are now no known remaining Northern White Rhinos in the wild, although the southern cousins are quite numerous. The Quagga is a Zebra subspecies that outwardly has a different striping pattern from other zebras. And, apparently it is also extinct. There is a current breeding program directed at breeding quagga features into a zebra herd. Reintroducing a species such as wolves or bears might also be considered as reintroducing a similar, but not quite the same species. Introducing a non-native species, of course, could cause interbreeding with native species, or out competing of the native species. Presumably this wouldn't be a bad problem unless lethal genes would get introduced. Sometimes this can be a bit inadvertent. My parents used to have some wild white geese on their property (came over from the neighbors). It was kind of neat that their pasture became a favorite stopover for the Canadian Honkers, presumably attracted by the domestic geese. That is, until a few years later we started noticing geese with white spots stopping by.
I think you mean genetic drift. Genetic drift is not strong enough in itself to cause speciation generally. Genetic drift is merely a sampling error in allele frequency change due to random events.
There are 18 aquatic species on the endangered species list.
There are many different species that are endangered in Florida. 8 species of ammphibians endangered 1 species of arachnids endangered 23 species of birds endangered 11 species of clams endangered 8 species of coralsm jellyfish and sea anemones endangered 25 species of crustaceans endangered 33 species of fishes endangered 18 species of insects endangered 15 species of mammals endangered 53 species of plants endangered 9 species of reptiles endangered 13 species of snails endangered
Endangered Species - novel - has 384 pages.
1,139 endangered species in Africa
Founder effect refers to the loss of genetic variation when a new colony is established by a very small number of individuals from a larger population. As a result of the loss of genetic variation, the new population may be distinctively different.Bottleneck effect is an evolutionary event in which a significant percentage of a population or species is killed or otherwise prevented from reproducing, and the population is reduced by 50% or more, often by several orders of magnitude.Population bottlenecks increase genetic drift, as the rate of drift is inversely proportional to the population size.They also increase inbreeding due to the reduced pool of possible mates.
632 endangered and 190 threatened
Endangered means not many left of the species.
There are many, including 47 that are critically endangered.
there are thousands of known endangered species on earth however that are thousands of more unknown endangered species
there are over 1000 endangered species
The IUCN Red List identifies three rhinocerous species as "critically endangered".