Biology 3445F Lecture Notes - Lecture 17: Vespula Germanica, Proceedings Of The National Academy Of Sciences Of The United States Of America, Extinction Threshold
Document Summary
Lecture 17: disassembly the process of extinction. Define: the ongoing process of non-random species losses and declines. The process of extinction: historic and current extinction, extinction risk, non-random extinction, extinction debt, co-extinctions, community disassembly. : the disappearance of a species from part of its natural range. Ecological extinction community, it no longer interacts with other species. : extinction of a population rather than of an entire species. : the reduction of a species to such low abundance that, although still present in the. Normal extinction and speciation rates have probably balanced each other over much of geologic time. Rates differ for different groups: marine invertebrates new species every 2-20 years, birds estimate of extinction rate of one species every 83. 3 years. Define: extinction event representing a sharp decrease in the number of species on earth in a short period of time.
