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作者机构:Univ Iowa Dept Stat & Actuarial Sci Iowa City IA 52242 USA Univ Oslo CEES Dept Biol N-0316 Oslo Norway Univ Oslo Dept Informat N-0316 Oslo Norway
出 版 物:《JOURNAL OF AGRICULTURAL BIOLOGICAL AND ENVIRONMENTAL STATISTICS》 (农业、生物与环境统计学杂志)
年 卷 期:2004年第9卷第2期
页 面:200-215页
核心收录:
学科分类:0710[理学-生物学] 12[管理学] 0202[经济学-应用经济学] 02[经济学] 1203[管理学-农林经济管理] 020205[经济学-产业经济学] 0714[理学-统计学(可授理学、经济学学位)]
主 题:blowfly density-dependent density-independent ecology ecotoxicology generalized additive model negative binomial nonlinear time series normal poisson
摘 要:We consider the problem of analyzing long-term experiments with panels of nonlinear time-series data in the framework of generalized additive models. Our approach is developed for testing and estimating the (partial) common dynamic structure across treatment groups. We illustrate our approach with a detailed analysis of an ecotoxicological experiment on the effect of sublethal doses of a toxic substance (cadmium) on the long-run dynamic structure of the greenbottle blowfly (Lucilia sericata). The general model for the blowfly experiment is a generalized additive model which is derived from a stage-structured ecological model. We discuss the relationship between the components of the generalized additive model and those of the underlying stage-structured model. In particular, our proposed approach casts new insights on the effect of toxic diet on the population dynamic structure of the blowfly.