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在六个环境带和40个地层间隔中划分出505个古生代海相组合,从中计算出的绝灭强度表明,整个生物群落显示的是向海方向绝灭的增加,而单个类别的属则趋向于向岸方向的最高绝灭.以群落为基准,向海方向的趋势是由近岸环境中具低特征绝灭率类别的属的富集而引起的.这个发现与生态的期望相一致,即栖居在无法预计的动荡环境中的生物比相对生活在可预计的较稳定条件下的生物要更容易遭受绝灭.
A total of 505 Paleozoic marine assemblages were divided in the six environmental zones and 40 stratigraphic intervals from which the extinction intensity calculated indicates that the entire biome indicates an increase in extinction towards the sea, whereas the genus of individual species tends to The highest extinction in the direction of the coast.The trend toward the sea direction based on the community is caused by the enrichment of genus with low characteristic extinction rate in the coastal environment.This finding is consistent with the ecological expectation, That is, living organisms living in unforeseen turbulent environments are more vulnerable to extinction than those living in more stable conditions.