Showing papers in "Ecological Modelling in 1977"

TL;DR: In this article, a new concept called the ecological buffer capacity was introduced to express the response of an ecosystem to changes in the loading of an organism to perturbations in the environment.

TL;DR: Model results suggest that during early successional stages, or in areas that are frequently disturbed, larval colonization and rapid growth are more important than dominance achieved by extracoelenteric digestion or by growing over another coral in acquiring and maintaining possession of reef substrate.

TL;DR: For a Lotka-Volterra model to represent a viable ecosystem it's nontrivial equilibrium must be feasible as discussed by the authors, which is not the case for a linear model.

TL;DR: In this article, the utility of system diagrams and of energy as a unit of measure for environmental impact assessment is illustrated using results from the White Sands Missile Range, New Mexico Environmental Impact Statement.

TL;DR: A graphical technique is demonstrated which, when combined with any resource simulation model, permits the resource manager to explore the effects of different management options and permits derivation of “optimal solutions” given particular objectives.

TL;DR: In this article, a stochastic model for man-caused forest fires is developed for a forest with given environmental conditions which is represented by an index, and the mean and the variance of the number of fires is derived.

TL;DR: The purpose of the present study is to investigate the stability properties of phytoplankton-zooplankton models, when recycling is taken into account, and how these properties are influenced by the use of Michaelis-Menten expressions for grazing and nutrient uptake.

TL;DR: In this article, the effects of a coastal power plant on an outer estuarine bay ecosystem on the west coast of Florida were evaluated with measurements and an ecological model, which indicated the importance of water exchange as a stabilizing factor, especially for sensitive compartments with rapid turnover rates.

TL;DR: In this paper, an analytical derivation of the sensitivity of a linear model to a given parameter is presented, which avoids the numerical solution of the system sensitivity equation associated with the model and thus reduces the amount of computer time and memory needed to make a comprehensive analysis.

TL;DR: In this article, the problem of minimizing a cost integral on an infinite time interval is avoided by minimizing an average of the cost function over an unknown but periodic time interval, where the control inputs are chosen so that an integral cost function of the state of the system, the control used, current time, and the time interval of the control program is minimized.

TL;DR: In this paper, a theory for computing the optimum size limit when the fishing season is limited is developed in a hypothetical fishery, which is applied to a real fishery with many year classes.

TL;DR: In this paper, a plant submodel describing the dynamics of above- and belowground phytomass, productivity and respiration is built, and an approach to the root assimilation partitioning problem is proposed, which takes into consideration root density and hydro-thermal conditions in soil profile.

TL;DR: In this article, the results of various mathematical models to data from the uptake of methyl mercury in bluegill sunfish (Lepomis macrochirus) were evaluated and compared.

TL;DR: In this paper, a mathematical model of radionuclide kinetics in a laboratory microcosm was built by systems identification techniques, which allowed movements of radioisotopes not directly observable in the experimental system to be distinguished.

TL;DR: In this article, a theoretical model was presented to examine the effect of dispersion of a population on its age distribution, and the dynamics of a one dimensional dispersive population on a linear habitat was investigated using Fourier transforms.

TL;DR: In this article, the intrinsic properties of differential equation models of ecosystems are formulated, which are classified into fundamental, stability, and sensitivity substructures, and an aspect of the ecological term "resilient" is introduced in a mathematical setting.

TL;DR: In this article, a kinematic model is developed to predict the movement of effluent from the City of Miami ocean outfall, which terminates at the 5 m isobath in the near vicinity of three tidal inlets opening into Biscayne Bay.