Based on 18 years of studies, Smith and his coauthors show that such ecosystem changes occur over short time scales of weeks to months, as well as over longer periods of years to decades.
What that means is a description of the key concepts and their relationships that make a SOA-basedecosystem work.
即是对那些让SOA生态系统运转起来的关键的概念及其它们之间的关系的描述。
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He said that because ants were exceptionally good "bio-indicators," environmental experts could use the data to check if an entire ecosystem is healthy, based mostly on its ant population.