The Florida snail kite (Rostrhamus sociabilis) is an endangered raptor that occurs as an isolated... more The Florida snail kite (Rostrhamus sociabilis) is an endangered raptor that occurs as an isolated population, currently of about 2,000 birds, in the wetlands of southern and central Florida, USA. Its exclusive prey species, the apple snail (Pomacea paludosa) is strongly influenced by seasonal changes in water abundance. Droughts during the snail kite breeding season have a direct negative effect
Individual-based models simulate populations and communities by following individuals and their p... more Individual-based models simulate populations and communities by following individuals and their properties. They have been used in ecology for more than four decades, with their use and ubiquity in ecology growing rapidly in the last two decades. Individual-based models have been used for many applied or "pragmatic" issues, such as informing the protection and management of particular populations in specific locations, but their use in addressing theoretical questions has also grown rapidly, recently helping us to understand how the sets of traits of individual organisms influence the assembly of communities and food webs. Individual-based models will play an increasingly important role in questions posed by complex ecological systems.
Rift Valley fever (RVF) is an important mosquito-borne viral zoonosis in Africa and the Middle Ea... more Rift Valley fever (RVF) is an important mosquito-borne viral zoonosis in Africa and the Middle East that causes human deaths and significant economic losses due to huge incidences of death and abortion among infected livestock. Outbreaks of RVF are sporadic and associated with both seasonal and socioeconomic effects. Here we propose an almost periodic three-patch model to investigate the transmission dynamics of RVF virus (RVFV) among ruminants with spatial movements. Our findings indicate that, in Northeastern Africa, human activities, including those associated with the Eid al Adha feast, along with a combination of climatic factors such as rainfall level and hydrological variations, contribute to the transmission and dispersal of the disease pathogen. Moreover, sporadic outbreaks may occur when the two events occur together: 1) abundant livestock are recruited into areas at risk from RVF due to the demand for the religious festival and 2) abundant numbers of mosquitoes emerge. Th...
The "ODD" (Overview, Design Concepts, and Details) protocol was published in 2006 as a ... more The "ODD" (Overview, Design Concepts, and Details) protocol was published in 2006 as a way to standardize the published descriptions of individual-based and agent-based models (ABMs). The primary objectives of ODD are making model descriptions more understandable and complete, thereby making ABMs less subject to criticism for being irreproducible. The protocol has been more successful than anticipated, already being used
Agent-based complex systems are dynamic networks of many interacting agents; examples include eco... more Agent-based complex systems are dynamic networks of many interacting agents; examples include ecosystems, financial markets, and cities. The search for general principles underlying the internal organization of such systems often uses bottom-up simulation models such as cellular automata and agent-based models. No general framework for designing, testing, and analyzing bottom-up models has yet been established, but recent advances in ecological modeling have come together in a general strategy we call pattern-oriented modeling. This strategy provides a unifying framework for decoding the internal organization of agent-based complex systems and may lead toward unifying algorithmic theories of the relation between adaptive behavior and system complexity.
Huston, M.A., D.L. DeAngelis, and W.M. Post. 1988. New computer models unify ecological theory. B... more Huston, M.A., D.L. DeAngelis, and W.M. Post. 1988. New computer models unify ecological theory. BioScience 38: 682-692.
The Florida snail kite (Rostrhamus sociabilis) is an endangered raptor that occurs as an isolated... more The Florida snail kite (Rostrhamus sociabilis) is an endangered raptor that occurs as an isolated population, currently of about 2,000 birds, in the wetlands of southern and central Florida, USA. Its exclusive prey species, the apple snail (Pomacea paludosa) is strongly influenced by seasonal changes in water abundance. Droughts during the snail kite breeding season have a direct negative effect
Individual-based models simulate populations and communities by following individuals and their p... more Individual-based models simulate populations and communities by following individuals and their properties. They have been used in ecology for more than four decades, with their use and ubiquity in ecology growing rapidly in the last two decades. Individual-based models have been used for many applied or "pragmatic" issues, such as informing the protection and management of particular populations in specific locations, but their use in addressing theoretical questions has also grown rapidly, recently helping us to understand how the sets of traits of individual organisms influence the assembly of communities and food webs. Individual-based models will play an increasingly important role in questions posed by complex ecological systems.
Rift Valley fever (RVF) is an important mosquito-borne viral zoonosis in Africa and the Middle Ea... more Rift Valley fever (RVF) is an important mosquito-borne viral zoonosis in Africa and the Middle East that causes human deaths and significant economic losses due to huge incidences of death and abortion among infected livestock. Outbreaks of RVF are sporadic and associated with both seasonal and socioeconomic effects. Here we propose an almost periodic three-patch model to investigate the transmission dynamics of RVF virus (RVFV) among ruminants with spatial movements. Our findings indicate that, in Northeastern Africa, human activities, including those associated with the Eid al Adha feast, along with a combination of climatic factors such as rainfall level and hydrological variations, contribute to the transmission and dispersal of the disease pathogen. Moreover, sporadic outbreaks may occur when the two events occur together: 1) abundant livestock are recruited into areas at risk from RVF due to the demand for the religious festival and 2) abundant numbers of mosquitoes emerge. Th...
The "ODD" (Overview, Design Concepts, and Details) protocol was published in 2006 as a ... more The "ODD" (Overview, Design Concepts, and Details) protocol was published in 2006 as a way to standardize the published descriptions of individual-based and agent-based models (ABMs). The primary objectives of ODD are making model descriptions more understandable and complete, thereby making ABMs less subject to criticism for being irreproducible. The protocol has been more successful than anticipated, already being used
Agent-based complex systems are dynamic networks of many interacting agents; examples include eco... more Agent-based complex systems are dynamic networks of many interacting agents; examples include ecosystems, financial markets, and cities. The search for general principles underlying the internal organization of such systems often uses bottom-up simulation models such as cellular automata and agent-based models. No general framework for designing, testing, and analyzing bottom-up models has yet been established, but recent advances in ecological modeling have come together in a general strategy we call pattern-oriented modeling. This strategy provides a unifying framework for decoding the internal organization of agent-based complex systems and may lead toward unifying algorithmic theories of the relation between adaptive behavior and system complexity.
Huston, M.A., D.L. DeAngelis, and W.M. Post. 1988. New computer models unify ecological theory. B... more Huston, M.A., D.L. DeAngelis, and W.M. Post. 1988. New computer models unify ecological theory. BioScience 38: 682-692.
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Papers by Donald Deangelis