Journal ArticleDOI
A model for a species with two life history stages and added mortality
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A differential equation model of a species with two life stages is constructed, and the behavior of the equilibria investigated when density-independent mortality is continuously imposed, finding the most effective stage to attack is that which is numerically dominant.About:
This article is published in Ecological Modelling.The article was published on 1980-12-01. It has received 41 citations till now.read more
Citations
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A time-delay model of single-species growth with stage structure.
Walter G. Aiello,H.I. Freedman +1 more
TL;DR: It is shown that under suitable hypotheses there exists a globally asymptotically stable positive equilibrium and questions concerning oscillation and nonoscillation of solutions are addressed analytically and numerically.
Journal ArticleDOI
Analysis of a model representing stage-structured population growth with state-dependent time delay
TL;DR: In this paper, a stage-structured model of population growth is proposed, where the time to maturity is itself state dependent, and the stability of the equilibria is discussed.
Journal ArticleDOI
Optimal harvesting and stability for a two-species competitive system with stage structure.
Xinyu Song,Lansun Chen +1 more
TL;DR: A stage-structured competitive population model with two life stages, immature and mature, with a mature population of harvesting with conditions for the existence of a globally asymptotically stable positive equilibrium and a threshold of harvesting for the mature population is considered.
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Persistence and global asymptotic stability of single species dispersal models with stage structure
H. I. Freedman,Jianhong Wu +1 more
TL;DR: In this paper, a system of retarded functional differential equations is proposed as a model of single-species population growth with dispersal in a multi-patch environment where individual members of the population have a life history that takes them through two stages, immature and mature.
Journal ArticleDOI
Quantitative relationships between leaf total nitrogen concentration and canopy reflectance spectra of rice
TL;DR: A good fit between the predicted and observed values of LNCs was suggested, which suggested that this model was feasible for predicting the LNC of rice under different cultivation conditions.
References
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Journal ArticleDOI
The population consequences of life history phenomena.
TL;DR: The part of Cole's article included here outlines the relationship of Thompson’s work (1931, paper 20 above) to stable population theory and discusses the relationships between the rate of increase, numbers and spacing of offspring, and age structure.
Book
Biological control by natural enemies
Paul DeBach,David Rosen +1 more
TL;DR: This chapter discusses biological control through research, the role of pesticides, and other biological methods in the management of pests, pesticides and biological control.
Journal ArticleDOI
A survey of quadratic systems
TL;DR: In this paper, a general theory of functions of a complex variable is constructed corresponding to the theory of elliptic functions, which is a special case of the problem of obtaining more explicit information for special classes of such systems.
Journal ArticleDOI
The evolution of complex life cycle phenomena: an ecological perspective.
TL;DR: This paper contains a theoretical treatment of the ecological and evolutionary exigencies imposed by a complex life cycle.
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A time-delay model of single-species growth with stage structure.
Walter G. Aiello,H.I. Freedman +1 more