Organism life cycles, predation, and the structure of marine pelagic ecosystems

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 海洋微食物网高被引文献

	Organism life cycles, predation, and the structure of marine pelagic ecosystems
	Verity, PG ; Smetacek, V
刊名	MARINE ECOLOGY-PROGRESS SERIES
	1996
卷号	130 期号:1-3 页码:277-293
关键词	morphology life history plankton pelagic top-down trophic cascade predation ecosystem structure bottom-up
ISSN号	0171-8630
英文摘要	This paper explores the notion that the theoretical basis for contemporary research concerning the structure and function of marine pelagic ecosystems is self-limiting. While some findings such as the microbial food web have extended our knowledge of the biological components of the upper water column and their relationships to fluxes of materials and energy, they have not advanced our understanding of why specific pelagic forms occur in time and space, and why only some attain dominant status and contribute the bulk of biogenic fluxes emanating from the mixed layer. It is argued here that a major impediment to improved conceptual models is the historic focus on resource-driven or 'bottom-up' factors as being the dominant variables structuring planktonic ecosystems. Evidence is presented that predation or 'top-down' trophic effects may be equally important in specifying the occurrence of particular taxa, the biomass within adjacent trophic levels, and the morphology of dominant herbivores and carnivores. It is suggested that key species, because of unique combinations of life history strategies, metabolic demands, and physiological performance, may exert a dominant role in the extent to which predatory interactions cascade through pelagic food webs. There is considerable evidence of evolution of predation avoidance strategies among phytoplankton and zooplankton. It is proposed that future research might profitably be directed toward the question of how the pelagic environment selects for life histories and morphologies of organisms under conditions when resource availability and predation are both significant structural buttresses. Methodological approaches should include detailed studies of dominant key taxa from different environments, with the goal of identifying the critical aspects of life history, behavior, or morphology which account for their success.
学科主题	Environmental Sciences & Ecology; Marine & Freshwater Biology; Oceanography
原文出处	INTER-RESEARCH
语种	英语
公开日期	2012-02-13
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/9276]
专题	南海海洋研究所_海洋微食物网高被引文献
推荐引用方式 GB/T 7714	Verity, PG,Smetacek, V. Organism life cycles, predation, and the structure of marine pelagic ecosystems[J]. MARINE ECOLOGY-PROGRESS SERIES,1996,130(1-3):277-293.
APA	Verity, PG,&Smetacek, V.(1996).Organism life cycles, predation, and the structure of marine pelagic ecosystems.MARINE ECOLOGY-PROGRESS SERIES,130(1-3),277-293.
MLA	Verity, PG,et al."Organism life cycles, predation, and the structure of marine pelagic ecosystems".MARINE ECOLOGY-PROGRESS SERIES 130.1-3(1996):277-293.