Don DeAngelis, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 195
Fish population dynamics in a seasonally varying wetland Fish population dynamics in a seasonally varying wetland
Small fishes in seasonally flooded environments such as the Everglades are capable of spreading into newly flooded areas and building up substantial biomass. Passive drift cannot account for the rapidity of observed population expansions. To test the reaction-diffusion mechanism for spread of the fish, we estimated their diffusion coefficient and applied a reaction-diffusion model. This...
Authors
Donald L. DeAngelis, Joel Trexler, Chris Cosner, Adam Obaza, Fred Jopp
Challenges and opportunities for integrating lake ecosystem modelling approaches Challenges and opportunities for integrating lake ecosystem modelling approaches
A large number and wide variety of lake ecosystem models have been developed and published during the past four decades. We identify two challenges for making further progress in this field. One such challenge is to avoid developing more models largely following the concept of others (‘reinventing the wheel’). The other challenge is to avoid focusing on only one type of model, while...
Authors
Wolf Mooij, Dennis Trolle, Erik Jeppesen, George Arhonditsis, Pavel Belolipetsky, Deonatus Chitamwebwa, Andrey Degermendzhy, Donald L. DeAngelis, Lisette Domis, Andrea S. Downing, J. Elliott, Carlos Fragoso, Ursula Gaedke, Svetlana Genova, Ramesh Gulati, Lars Hakanson, David P. Hamilton, Matthew R. Hipsey, Jochem Hoen, Stephan Hulsmann, F. Los, Vardit Makler-Pick, Thomas Petzoldt, Igor Prokopkin, Karsten Rinke, Sebastiaan Schep, Koji Tominaga, Anne A. Van Dam, Egbert Van Nes, Scott Wells, Jan H. Janse
Ecological hierarchies and self-organisation - Pattern analysis, modelling and process integration across scales Ecological hierarchies and self-organisation - Pattern analysis, modelling and process integration across scales
A continuing discussion in applied and theoretical ecology focuses on the relationship of different organisational levels and on how ecological systems interact across scales. We address principal approaches to cope with complex across-level issues in ecology by applying elements of hierarchy theory and the theory of complex adaptive systems. A top-down approach, often characterised by...
Authors
H. Reuter, F. Jopp, J. Blanco-Moreno, C. Damgaard, Y. Matsinos, D.L. DeAngelis
The golden rule of reviewing The golden rule of reviewing
A major bottleneck in the time required to publish a scientific or scholarly paper is the speed with which reviews by peers are returned to journals. Peer review is a reciprocal altruistic system in which each individual may perform every task—editors, reviewers, and authors—at different times. Journals have no way to coerce reviewers to return their critiques faster. To greatly shorten...
Authors
Mark McPeek, Donald L. DeAngelis, Ruth Shaw, Allen Moore, Mark Rausher, Donald Strong, Aaron Ellison, Louise Barrett, Loren Rieseberg, Michael Breed, Jack Sullivan, Craig Osenberg, Marcel Holyoak, Mark Elgar
Troublesome toxins: Time to re-think plant-herbivore interactions in vertebrate ecology Troublesome toxins: Time to re-think plant-herbivore interactions in vertebrate ecology
Earlier models of plant-herbivore interactions relied on forms of functional response that related rates of ingestion by herbivores to mechanical or physical attributes such as bite size and rate. These models fail to predict a growing number of findings that implicate chemical toxins as important determinants of plant-herbivore dynamics. Specifically, considerable evidence suggests that...
Authors
R.K. Swihart, D.L. DeAngelis, Z. Feng, Lee Bryant
Consumer-resource theory predicts dynamic transitions between outcomes of interspecific interactions Consumer-resource theory predicts dynamic transitions between outcomes of interspecific interactions
Interactions between two populations are often defined by their interaction outcomes; that is, the positive, neutral, or negative effects of species on one another. Yet, signs of outcomes are not absolute, but vary with the biotic and abiotic contexts of interactions. Here, we develop a general theory for transitions between outcomes based on consumer-resource (C-R) interactions in which...
Authors
J. Holland, Donald L. DeAngelis
Plant toxicity, adaptive herbivory, and plant community dynamics Plant toxicity, adaptive herbivory, and plant community dynamics
We model effects of interspecific plant competition, herbivory, and a plant's toxic defenses against herbivores on vegetation dynamics. The model predicts that, when a generalist herbivore feeds in the absence of plant toxins, adaptive foraging generally increases the probability of coexistence of plant species populations, because the herbivore switches more of its effort to whichever...
Authors
Z. Feng, R. Liu, D.L. DeAngelis, Lee Bryant, K. Kielland, Chapin Stuart, R.K. Swihart
Allowing macroalgae growth forms to emerge: Use of an agent-based model to understand the growth and spread of macroalgae in Florida coral reefs, with emphasis on Halimeda tuna Allowing macroalgae growth forms to emerge: Use of an agent-based model to understand the growth and spread of macroalgae in Florida coral reefs, with emphasis on Halimeda tuna
The growth patterns of macroalgae in three-dimensional space can provide important information regarding the environments in which they live, and insights into changes that may occur when those environments change due to anthropogenic and/or natural causes. To decipher these patterns and their attendant mechanisms and influencing factors, a spatially explicit model has been developed...
Authors
A.T. Yniguez, J.W. McManus, D.L. DeAngelis
Host mating system and the spread of a disease-resistant allele in a population Host mating system and the spread of a disease-resistant allele in a population
The model presented here modifies a susceptible-infected (SI) host-pathogen model to determine the influence of mating system on the outcome of a host-pathogen interaction. Both deterministic and stochastic (individual-based) versions of the model were used. This model considers the potential consequences of varying mating systems on the rate of spread of both the pathogen and resistance...
Authors
D.L. DeAngelis, Jennifer Koslow, J. Jiang, S. Ruan
Emergence of functional responses from interactions of individuals Emergence of functional responses from interactions of individuals
No abstract available.
Authors
Donald L. DeAngelis, Shu Ju, J. Holland
Food web dynamics in a seasonally varying wetland Food web dynamics in a seasonally varying wetland
A spatially explicit model is developed to simulate the small fish community and its underlying food web, in the freshwater marshes of the Everglades. The community is simplified to a few small fish species feeding on periphyton and invertebrates. Other compartments are detritus, crayfish, and a piscivorous fish species. This unit food web model is applied to each of the 10,000 spatial...
Authors
D.L. DeAngelis, J.C. Trexler, D.D. Donalson
Plant-herbivore interactions mediated by plant toxicity Plant-herbivore interactions mediated by plant toxicity
We explore the impact of plant toxicity on the dynamics of a plant-herbivore interaction, such as that of a mammalian browser and its plant forage species, by studying a mathematical model that includes a toxin-determined functional response. In this functional response, the traditional Holling Type 2 response is modified to include the negative effect of toxin on herbivore growth, which...
Authors
Z. Feng, R. Liu, D.L. DeAngelis
Science and Products
Filter Total Items: 195
Fish population dynamics in a seasonally varying wetland Fish population dynamics in a seasonally varying wetland
Small fishes in seasonally flooded environments such as the Everglades are capable of spreading into newly flooded areas and building up substantial biomass. Passive drift cannot account for the rapidity of observed population expansions. To test the reaction-diffusion mechanism for spread of the fish, we estimated their diffusion coefficient and applied a reaction-diffusion model. This...
Authors
Donald L. DeAngelis, Joel Trexler, Chris Cosner, Adam Obaza, Fred Jopp
Challenges and opportunities for integrating lake ecosystem modelling approaches Challenges and opportunities for integrating lake ecosystem modelling approaches
A large number and wide variety of lake ecosystem models have been developed and published during the past four decades. We identify two challenges for making further progress in this field. One such challenge is to avoid developing more models largely following the concept of others (‘reinventing the wheel’). The other challenge is to avoid focusing on only one type of model, while...
Authors
Wolf Mooij, Dennis Trolle, Erik Jeppesen, George Arhonditsis, Pavel Belolipetsky, Deonatus Chitamwebwa, Andrey Degermendzhy, Donald L. DeAngelis, Lisette Domis, Andrea S. Downing, J. Elliott, Carlos Fragoso, Ursula Gaedke, Svetlana Genova, Ramesh Gulati, Lars Hakanson, David P. Hamilton, Matthew R. Hipsey, Jochem Hoen, Stephan Hulsmann, F. Los, Vardit Makler-Pick, Thomas Petzoldt, Igor Prokopkin, Karsten Rinke, Sebastiaan Schep, Koji Tominaga, Anne A. Van Dam, Egbert Van Nes, Scott Wells, Jan H. Janse
Ecological hierarchies and self-organisation - Pattern analysis, modelling and process integration across scales Ecological hierarchies and self-organisation - Pattern analysis, modelling and process integration across scales
A continuing discussion in applied and theoretical ecology focuses on the relationship of different organisational levels and on how ecological systems interact across scales. We address principal approaches to cope with complex across-level issues in ecology by applying elements of hierarchy theory and the theory of complex adaptive systems. A top-down approach, often characterised by...
Authors
H. Reuter, F. Jopp, J. Blanco-Moreno, C. Damgaard, Y. Matsinos, D.L. DeAngelis
The golden rule of reviewing The golden rule of reviewing
A major bottleneck in the time required to publish a scientific or scholarly paper is the speed with which reviews by peers are returned to journals. Peer review is a reciprocal altruistic system in which each individual may perform every task—editors, reviewers, and authors—at different times. Journals have no way to coerce reviewers to return their critiques faster. To greatly shorten...
Authors
Mark McPeek, Donald L. DeAngelis, Ruth Shaw, Allen Moore, Mark Rausher, Donald Strong, Aaron Ellison, Louise Barrett, Loren Rieseberg, Michael Breed, Jack Sullivan, Craig Osenberg, Marcel Holyoak, Mark Elgar
Troublesome toxins: Time to re-think plant-herbivore interactions in vertebrate ecology Troublesome toxins: Time to re-think plant-herbivore interactions in vertebrate ecology
Earlier models of plant-herbivore interactions relied on forms of functional response that related rates of ingestion by herbivores to mechanical or physical attributes such as bite size and rate. These models fail to predict a growing number of findings that implicate chemical toxins as important determinants of plant-herbivore dynamics. Specifically, considerable evidence suggests that...
Authors
R.K. Swihart, D.L. DeAngelis, Z. Feng, Lee Bryant
Consumer-resource theory predicts dynamic transitions between outcomes of interspecific interactions Consumer-resource theory predicts dynamic transitions between outcomes of interspecific interactions
Interactions between two populations are often defined by their interaction outcomes; that is, the positive, neutral, or negative effects of species on one another. Yet, signs of outcomes are not absolute, but vary with the biotic and abiotic contexts of interactions. Here, we develop a general theory for transitions between outcomes based on consumer-resource (C-R) interactions in which...
Authors
J. Holland, Donald L. DeAngelis
Plant toxicity, adaptive herbivory, and plant community dynamics Plant toxicity, adaptive herbivory, and plant community dynamics
We model effects of interspecific plant competition, herbivory, and a plant's toxic defenses against herbivores on vegetation dynamics. The model predicts that, when a generalist herbivore feeds in the absence of plant toxins, adaptive foraging generally increases the probability of coexistence of plant species populations, because the herbivore switches more of its effort to whichever...
Authors
Z. Feng, R. Liu, D.L. DeAngelis, Lee Bryant, K. Kielland, Chapin Stuart, R.K. Swihart
Allowing macroalgae growth forms to emerge: Use of an agent-based model to understand the growth and spread of macroalgae in Florida coral reefs, with emphasis on Halimeda tuna Allowing macroalgae growth forms to emerge: Use of an agent-based model to understand the growth and spread of macroalgae in Florida coral reefs, with emphasis on Halimeda tuna
The growth patterns of macroalgae in three-dimensional space can provide important information regarding the environments in which they live, and insights into changes that may occur when those environments change due to anthropogenic and/or natural causes. To decipher these patterns and their attendant mechanisms and influencing factors, a spatially explicit model has been developed...
Authors
A.T. Yniguez, J.W. McManus, D.L. DeAngelis
Host mating system and the spread of a disease-resistant allele in a population Host mating system and the spread of a disease-resistant allele in a population
The model presented here modifies a susceptible-infected (SI) host-pathogen model to determine the influence of mating system on the outcome of a host-pathogen interaction. Both deterministic and stochastic (individual-based) versions of the model were used. This model considers the potential consequences of varying mating systems on the rate of spread of both the pathogen and resistance...
Authors
D.L. DeAngelis, Jennifer Koslow, J. Jiang, S. Ruan
Emergence of functional responses from interactions of individuals Emergence of functional responses from interactions of individuals
No abstract available.
Authors
Donald L. DeAngelis, Shu Ju, J. Holland
Food web dynamics in a seasonally varying wetland Food web dynamics in a seasonally varying wetland
A spatially explicit model is developed to simulate the small fish community and its underlying food web, in the freshwater marshes of the Everglades. The community is simplified to a few small fish species feeding on periphyton and invertebrates. Other compartments are detritus, crayfish, and a piscivorous fish species. This unit food web model is applied to each of the 10,000 spatial...
Authors
D.L. DeAngelis, J.C. Trexler, D.D. Donalson
Plant-herbivore interactions mediated by plant toxicity Plant-herbivore interactions mediated by plant toxicity
We explore the impact of plant toxicity on the dynamics of a plant-herbivore interaction, such as that of a mammalian browser and its plant forage species, by studying a mathematical model that includes a toxin-determined functional response. In this functional response, the traditional Holling Type 2 response is modified to include the negative effect of toxin on herbivore growth, which...
Authors
Z. Feng, R. Liu, D.L. DeAngelis