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原文連結
論文資訊
- 類型：已發表論文
- 日期：2014-11-20
摘要
Life is full of risk. To deal with this uncertainty, many organisms have evolved bet-hedging strategies that spread risk through phenotypic diversification. These rates of diversification can vary by orders of magnitude in different 物種. Here we examine how key characteristics of risk and organismal 生態學 affect the fitness consequences of variation in diversification rate. We find that rapid diversification is strongly favored when the risk faced has a wide spatial extent, with a single disaster affecting a large fraction of the 族群. This advantage is especially great in small 族群s subject to frequent disaster. In contrast, when risk is correlated through time, slow diversification is favored because it allows adaptive tracking of disasters that tend to occur in series. Naturally evolved diver
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