Don DeAngelis, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 195
Negative frequency-dependent foraging behaviour in a generalist herbivore (Alces alces) and its stabilizing influence on food-web dynamics Negative frequency-dependent foraging behaviour in a generalist herbivore (Alces alces) and its stabilizing influence on food-web dynamics
1. Resource selection is widely appreciated to be context‐dependent and shaped by both biological and abiotic factors. However, few studies have empirically assessed the extent to which selective foraging behaviour is dynamic and varies in response to environmental conditions for free‐ranging animal populations. 2. Here, we assessed the extent that forage selection fluctuated in response...
Authors
Sarah R. Hoy, John A. Vucetich, Rongsong Liu, Don DeAngelis, Rolf O. Peterson, Leah M. Vucetich, John J. Henderson
Success of lake restoration depends on spatial aspects of nutrient loading and hydrology Success of lake restoration depends on spatial aspects of nutrient loading and hydrology
Many aquatic ecosystems have deteriorated due to human activities and their restoration is often troublesome. It is proposed here that the restoration success of deteriorated lakes critically depends on hitherto largely neglected spatial heterogeneity in nutrient loading and hydrology. A modelling approach is used to study this hypothesis by considering four lake types with contrasting...
Authors
Annette B. G. Janssen, Dianneke van Wijk, Luuk P.A. van Gerven, Elisabeth S. Bakker, Robert J. Brederveld, Donald L. DeAngelis, Jan H. Janse, Wolf M. Mooij
Resource concentration mechanisms facilitate foraging success in simulations of a pulsed oligotrophic wetland Resource concentration mechanisms facilitate foraging success in simulations of a pulsed oligotrophic wetland
Context Movement of prey on hydrologically pulsed, spatially heterogeneous wetlands can result in transient, high prey concentrations, when changes in landscape features such as connectivity between flooded areas alternately facilitate and impede prey movement. Predators track and exploit these concentrations, depleting them as they arise. Objectives We sought to describe how prey pulses...
Authors
Simeon Yurek, Donald L. DeAngelis
Modeling δ18O as an early indicator of regime shift arising from salinity stress in coastal vegetation Modeling δ18O as an early indicator of regime shift arising from salinity stress in coastal vegetation
In many important coastal habitats, a combination of increasing soil salinization due to sea level rise, reduced precipitation and storm surges may induce regime shift from salinity-intolerant glycophytic vegetation to salinity-tolerant halophytic species. Early detection of regime shift due to salinity stress in vegetation may facilitate conservation efforts. It has been shown that the...
Authors
Su Yean Teh, Hock Lye Koh, Donald L. DeAngelis, Clifford I. Voss, Leonel da Silveira Lobo Sternberg
Decision-making in agent-based modeling: A current review and future prospectus Decision-making in agent-based modeling: A current review and future prospectus
All basic processes of ecological populations involve decisions; when and where to move, when and what to eat, and whether to fight or flee. Yet decisions and the underlying principles of decision-making have been difficult to integrate into the classical population-level models of ecology. Certainly, there is a long history of modeling individuals' searching behavior, diet selection, or...
Authors
Donald L. DeAngelis, Stephanie G. Diaz
Energetic constraints and the paradox of a diffusing population in a heterogeneous environment Energetic constraints and the paradox of a diffusing population in a heterogeneous environment
Previous mathematical analyses have shown that, for certain parameter ranges, a population, described by logistic equations on a set of connected patches, and diffusing among them, can reach a higher equilibrium total population when the local carrying capacities are heterogeneously distributed across patches, than when carrying capacities having the same total sum are homogeneously...
Authors
Yuanshi Wang, Donald L. DeAngelis
Science and Products
Filter Total Items: 195
Negative frequency-dependent foraging behaviour in a generalist herbivore (Alces alces) and its stabilizing influence on food-web dynamics Negative frequency-dependent foraging behaviour in a generalist herbivore (Alces alces) and its stabilizing influence on food-web dynamics
1. Resource selection is widely appreciated to be context‐dependent and shaped by both biological and abiotic factors. However, few studies have empirically assessed the extent to which selective foraging behaviour is dynamic and varies in response to environmental conditions for free‐ranging animal populations. 2. Here, we assessed the extent that forage selection fluctuated in response...
Authors
Sarah R. Hoy, John A. Vucetich, Rongsong Liu, Don DeAngelis, Rolf O. Peterson, Leah M. Vucetich, John J. Henderson
Success of lake restoration depends on spatial aspects of nutrient loading and hydrology Success of lake restoration depends on spatial aspects of nutrient loading and hydrology
Many aquatic ecosystems have deteriorated due to human activities and their restoration is often troublesome. It is proposed here that the restoration success of deteriorated lakes critically depends on hitherto largely neglected spatial heterogeneity in nutrient loading and hydrology. A modelling approach is used to study this hypothesis by considering four lake types with contrasting...
Authors
Annette B. G. Janssen, Dianneke van Wijk, Luuk P.A. van Gerven, Elisabeth S. Bakker, Robert J. Brederveld, Donald L. DeAngelis, Jan H. Janse, Wolf M. Mooij
Resource concentration mechanisms facilitate foraging success in simulations of a pulsed oligotrophic wetland Resource concentration mechanisms facilitate foraging success in simulations of a pulsed oligotrophic wetland
Context Movement of prey on hydrologically pulsed, spatially heterogeneous wetlands can result in transient, high prey concentrations, when changes in landscape features such as connectivity between flooded areas alternately facilitate and impede prey movement. Predators track and exploit these concentrations, depleting them as they arise. Objectives We sought to describe how prey pulses...
Authors
Simeon Yurek, Donald L. DeAngelis
Modeling δ18O as an early indicator of regime shift arising from salinity stress in coastal vegetation Modeling δ18O as an early indicator of regime shift arising from salinity stress in coastal vegetation
In many important coastal habitats, a combination of increasing soil salinization due to sea level rise, reduced precipitation and storm surges may induce regime shift from salinity-intolerant glycophytic vegetation to salinity-tolerant halophytic species. Early detection of regime shift due to salinity stress in vegetation may facilitate conservation efforts. It has been shown that the...
Authors
Su Yean Teh, Hock Lye Koh, Donald L. DeAngelis, Clifford I. Voss, Leonel da Silveira Lobo Sternberg
Decision-making in agent-based modeling: A current review and future prospectus Decision-making in agent-based modeling: A current review and future prospectus
All basic processes of ecological populations involve decisions; when and where to move, when and what to eat, and whether to fight or flee. Yet decisions and the underlying principles of decision-making have been difficult to integrate into the classical population-level models of ecology. Certainly, there is a long history of modeling individuals' searching behavior, diet selection, or...
Authors
Donald L. DeAngelis, Stephanie G. Diaz
Energetic constraints and the paradox of a diffusing population in a heterogeneous environment Energetic constraints and the paradox of a diffusing population in a heterogeneous environment
Previous mathematical analyses have shown that, for certain parameter ranges, a population, described by logistic equations on a set of connected patches, and diffusing among them, can reach a higher equilibrium total population when the local carrying capacities are heterogeneously distributed across patches, than when carrying capacities having the same total sum are homogeneously...
Authors
Yuanshi Wang, Donald L. DeAngelis