全球智库信息集成服务系统(G2TT): Does density-dependent individual growth simplify dynamics in age-Structured populations? A general model applied to perch, Perca fluviatilis.

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来源类型	Article
规范类型	其他
	Does density-dependent individual growth simplify dynamics in age-Structured populations? A general model applied to perch, Perca fluviatilis.
	Ylikarjula J; Heino M; Dieckmann U; Kaitala V
发表日期	2002
出处	Annales Zoologici Fennici 39 (2): 99-107.
出版年	2002
语种	英语
摘要	Availability of resources is a limiting factor for many populations. Diminished resource availability due to intraspecific competition is expected to decrease the annual growth increments of individuals. We study an age-structured population model for individuals with indeterminate growth and annual reproduction; parameters of the model are chosen to characterize a population with life history similar to the Eurasian perch. Different variants of this model are analyzed, all of which have a potential for exhibiting non-equilibrium population fluctuations. We demonstrate that incorporating density-dependent individual growth into these models changes the dynamics of these populations by damping or even eradicating fluctuations in abundance and biomass. This finding offers an explanation for the observed stable dynamics of unperturbed perch populations. Further, density-dependent individual growth may also be a significant factor contributing to the conspicuous empirical rarity of non-equilibrium population dynamics in general.
主题	Adaptive Dynamics Network (ADN)
URL	http://pure.iiasa.ac.at/id/eprint/6587/
来源智库	International Institute for Applied Systems Analysis (Austria)
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/128136
推荐引用方式 GB/T 7714	Ylikarjula J,Heino M,Dieckmann U,et al. Does density-dependent individual growth simplify dynamics in age-Structured populations? A general model applied to perch, Perca fluviatilis.. 2002.