SpatialDemography: a spatially explicit, stage‐structured, metacommunity model

SpatialDemography: a spatially explicit, stage‐structured, metacommunity model
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空间人口统计学:空间明确、阶段结构、元社区模型

DOI:
10.1111/ecog.02295
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发表时间:
2016
期刊:
影响因子:
5.9
通讯作者:
K. Wiegand
K. Wiegand
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
J.L.K. Gerstenlauer;K. Wiegand

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物种和种群对环境变化(例如气候和土地利用的变化)的响应通常是复杂的,难以预测。我们创建了SpatialDemography模型(R包:spatialdemography)。该模型是一个空间显式的、阶段结构的、基于矩阵的后居性模型,具有模拟物种和种群对环境异质性和变化的潜在响应的潜力。SpatialDemography模型假设生物种群的细胞景观具有四个生命阶段:移动的分散阶段、两个固着的非生殖阶段和一个生殖的成年阶段。假设个体起源于给定细胞的中心,并根据指定的分散核(例如,对数正态)分散。所有成年个体都能生育后代。模型的方法和框架的背景下,描述了一个假设的例子与多个竞争物种在一个四细胞景观。在本例模拟中,空间位置和物种相互作用对于理解种群动态都很重要。SpatialDemography可以应用于需要理解时空变化的瞬时和长期人口响应的问题。它主要适用于具有早期扩散和固着成虫的生物(即模块生物,如植物和一些海洋生物)的集合种群和集合种群。SpatialDemography与其他人口模型的不同之处在于它是空间上明确的,可以包含生物相互作用,并且是在R中实现的。
The responses of species and populations to changes in the environment (e.g. changes in climate and land use) are often complex and difficult to predict.We have created the SpatialDemography model (R package: spatialdemography). The model is a spatially explicit, stage‐structured, matrix‐based metacommunity model, with the potential for modeling species’ and populations’ potential responses to environmental heterogeneity and change.The SpatialDemography model assumes a cellular landscape populated by organisms with four life stages: a mobile dispersing stage, two sessile non‐reproductive stages, and a reproductive adult stage. Individuals are assumed to originate at the center of a given cell and disperse according to a specified dispersal kernel (e.g. log‐normal). All adult individuals are capable of producing offspring. The model approach and framework are described in the context of a hypothetical example with multiple competing species in a four cell landscape. In this example simulation, both spatial location and species interactions were important for understanding population dynamics.SpatialDemography can be applied to questions where an understanding of transient and long‐term demographic responses to spatiotemporal changes is desired. It is primarily applicable to metapopulations and metacommunities of organisms with early dispersal and sessile adults (i.e. modular organisms such as plants and some marine organisms). SpatialDemography differs from other population models in that it is spatially explicit, can incorporate biotic interactions, and is implemented in R.
进化论基础文本@@@进化论教科书。
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