“relict”的概念、定义、翻译、参考文献-科学参考

relict

Biology

A group of organisms that survives as a remnant of a formerly much larger group, in terms of either taxonomic diversity (evolutionary relict) or geographical distribution (geographical relict). The term can be applied to species, genera, other taxa, or to populations or even to entire communities.

Geology and Earth Sciences

Applied to organisms that have survived while other related ones have become extinct. Often the term refers to species that have survived periods of unfavourable conditions (e.g. glacial periods or land submergence) by existing in regions called refugia, while becoming extinct elsewhere (e.g. some arctic-alpine plants). It may also refer to a surviving species of a group, the other species of which have become extinct (e.g. coelacanth fish). See also relict sediment.

单词	relict
释义	relict Biology A group of organisms that survives as a remnant of a formerly much larger group, in terms of either taxonomic diversity (evolutionary relict) or geographical distribution (geographical relict). The term can be applied to species, genera, other taxa, or to populations or even to entire communities. Geology and Earth Sciences Applied to organisms that have survived while other related ones have become extinct. Often the term refers to species that have survived periods of unfavourable conditions (e.g. glacial periods or land submergence) by existing in regions called refugia, while becoming extinct elsewhere (e.g. some arctic-alpine plants). It may also refer to a surviving species of a group, the other species of which have become extinct (e.g. coelacanth fish). See also relict sediment.
随便看	pteridophyte pteridophytes Pteridospermales pterobranch Pterobranchia pterodactyl pterodactyls pteropod ooze Pteropsida Pterosauria Pterygota PTFE PTH PTI Ptilograptidae PTIME PTM PTO Ptolemaic astronomy Ptolemaic system Ptolemies Ptolemy Ptolemy (146–170) Ptolemy (2nd century) Ptolemy’s Theorem