Re-analysis of a salp population time-series

Marine Ecology Progress Series

Andrew R. Beet¹  Kelly R. Sutherland¹  Andrew R. Solow¹ 

关键词: Salp;    Population dynamics;    Stratification;    Negative binomial distribution;   

DOI  :  10.3354/meps08811

学科分类：海洋学与技术

来源: Inter-Research

【 摘 要 】

ABSTRACT: Weekly abundances of 2 salp populations (Salpa fusiformis and Thalia democratica) were determined for the period from 1967 to 1990 at a coastal station in the Western Mediterranean using a discrete abundance scale. A previous analysis modeled these data as a Markov chain with ordered states and found a significant effect of stratification on the Markov transition probabilities. An alternative analysis combining an underlying population model and a model of the observation process found qualitatively similar results, with population growth rate significantly related to stratification. However, by explicitly separating the population model from the observation model, the alternative approach has advantages including a closer connection to the underlying biology and the capability to predict salp abundance. 

【 授权许可】

Unknown