Fitness landscapes of thermal sensitivity
Article Abstract:
The preferred temperature range for performing in a cyclically varying thermal environment is examined. The link between temperature and fitness-assoiated performance is modeled through a performance curve defined by performance breadth which measures thermal specialization and the critical maximum temperature for performance. The curve finds the amount of time an individual needs to grow, mate, forage and oviposit under a particular temporal pattern. The performance models indicate that enhancing temporal variation can favor the evolution of thermal specialization.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1995
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Spatial scale and the spread of a fungal pathogen of gypsy moth
Article Abstract:
A spatial mathematical model was formulated to study the spread of the fungal pathogen Entomophaga maimaiga that infects gypsy moth over a large area in central New York and Pennsylvania. Observations showed that most fungal infections occurred after larvae finish ballooning. The progress of the disease was shown at one-week intervals which suggested that the disease spreads slowly as it builds up in intensity where it was introduced. Ultimately, the disease may reach higher spread rates.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1998
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Spatial aggregation and neutral models in fractal landscapes
Article Abstract:
Fractal models for fragmented landscape patterns are developed as tools for ecological research. The patterns are made at a scale range of 90 to 2,400 meters. A neutral model of species co-occurrence is developed to determine species density at different scales. Analysis of the landscape patterns is dependent on the dispersal ability, the size of home range and the speed with which the organism use the resources.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1992
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