Density dependent life history evolution in fluctuating environments
Density dependent life history evolution in fluctuating environments
复制标题
波动环境中密度依赖的生命史进化
DOI：
10.1007/978-3-642-51483-8_3
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
G. Meszéna
中科院分区：
文献类型：
--
作者：
É. Kisdi;G. Meszéna
环境波动不仅可能改变生命历史优化问题，而且可能改变查询优化本身。在密度调节下，年增长率既受波动的直接影响，也受种群密度波动的间接影响。对于弱波动，存在一个与稳定环境最优略有不同的最优策略，因为（a）它应该适应波动改变的平均密度，（B）它应该减小由环境波动的直接和间接影响引起的年增长率的波动，（c）它应该利用增长，但避免波动引起的平均年增长率的下降。如果波动很大，“最优”策略就变得毫无意义，因为长期增长率并不独立于既定的人口。共存（或排除稀有策略）可能由足够强的波动来介导，这可以通过一个简单的模型来说明，该模型阐明了与资源竞争模型的联系。此外，强波动的一些其他后果，如多个ESS，ESS不能入侵一个既定的人口，和历史事件，决定了进化的结果，通过一个彩票模型的例子证明。
Environmental fluctuation may not only alter the life history optimization problem but also query optimization itself. Under density regulation annual growth rate is influenced by the direct effect of fluctuation as well as by an indirect effect due to fluctuating population density. For a weak fluctuation there is an optimal strategy which is slightly different from the stable environment optimum, since (a) it should adapt to an average density altered by fluctuation, (b) it should diminish the fluctuation in annual growth rate caused by direct and indirect effect of environmental fluctuation, and (c) it should exploit an increase, but avoid a decrease in average annual growth rate caused by fluctuation. The “optimal” strategy becomes meaningless if the fluctuation is strong, because long run growth rates are not independent of the established population. Coexistence (or exclusion of the rare strategy) may be mediated by a sufficiently strong fluctuation, which is illustrated by a simple model elucidating the connection with resource-competition models. Moreover, some other consequences of strong fluctuation are demonstrated by the example of a lottery model, such as multiple ESS, ESS which cannot invade an established population, and historical events which determine the outcome of the evolution.
影响因子：
1.4
作者：
ESHEL, I;MOTRO, U
通讯作者：
MOTRO, U
不确定的生活：随机环境中的人口统计学。
影响因子：
1.4
作者：
Tuljapurkar,S
通讯作者：
Tuljapurkar,S