Non-linear dynamics in marine-phytoplankton population systems

被引:16
作者
Belgrano, A
Lima, M
Stenseth, NC
机构
[1] Pontificia Univ Catolica Chile, Ctr Adv Studies Ecol & Biodivers, Santiago 6513677, Chile
[2] Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA
[3] Univ Oslo, Dept Biol, CEES, N-0316 Oslo, Norway
[4] Inst Marine Res, Flodevigen Marine Res Stn, N-4817 His, Norway
关键词
phytoplankton populations; North Atlantic oscillation; non-linear dynamics; density-dependence; macroecology;
D O I
10.3354/meps273281
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Although non-linear density-dependence has been widely emphasized in population dynamics studies, the existence of non-linear exogenous forces have been less explored. In particular, we propose that the formulation of population dynamics models that include both non-linear endogenous (i.e. feedback structure) and exogenous (e.g. climatic) responses is relevant for understanding how climate variability affects natural systems. Here we show that single-species non-linear logistic models for marine phytoplankton in combination with non-linear exogenous forces capture observed population oscillations very well. Our results suggest that general population dynamic theory represents a useful tool for understanding the natural fluctuations of phytoplankton populations. Altogether we document what might be called a switch-on/switch-off dynamics in the phytoplankton population dynamics in relation to climate variability. We suggest the importance of, and the need for, linking population dynamics processes at local and regional scales to processes at the ecosystem level, thus reflecting a macroecological perspective of marine pelagic systems.
引用
收藏
页码:281 / 289
页数:9
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