Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Individual-based model (IBM)"”.
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Examining Movement Dynamics of the Gulf Menhaden Fishery Using an Individual-based Model
… These analyses were used to inform an individual-based model (IBM). The IBM was run under several different spatial restriction regimes, including (1) current regulations in Texas, Louisiana, Mississippi, and Alabama; (2) additional restrictions off the coast of Jackson County, MS; (3) …
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Dynamic energy budgets and bioaccumulation : a model for marine mammals and marine mammal populations
Energy intake of individuals affects growth of organisms and, therefore, populations. Persistent lipophilic toxicants acquired with the energy can bioaccumulate and harm individuals. Marine mammals are particularly vulnerable because of their large energy requirements, and transfer of energy and …
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Dynamic energy budgets and bioaccumulation : a model for marine mammals and marine mammal populations
Energy intake of individuals affects growth of organisms and, therefore, populations. Persistent lipophilic toxicants acquired with the energy can bioaccumulate and harm individuals. Marine mammals are particularly vulnerable because of their large energy requirements, and transfer of energy and …
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Investigating the physical and ecological drivers of change in a coastal ecosystem: from individual to population scale impacts.
… scale of the whole harbour, and at the scale of individual habitats: an intertidal mudflat and a saline lagoon; and 2) predicting the response of an overwintering shorebird population, the pied avocet (Recurvirostra avosetta), to future environmental changes, such as sea-level rise and habitat …
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Modelling migration and aggregation: Applications in fisheries, environmental change, and evolution
… to and from spawning grounds. In this thesis, models are developed to explore the consequences of migratory behaviour and spatial structure on fisheries management and responses to environmental change. Initially, a simple population model of a migratory fish population is presented. Migration …
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Impact of human disturbance on coastal birds: population consequences derived from behavioural responses
… and taking a joint fieldwork and simulation modelling approach. Fieldwork was centred on Poole Harbour; an estuary and wetland of international importance located on the south coast of the UK. Disturbance experiments and observations showed that bird responses to disturbance are highly …
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Modeling Size Dependent Interactions of a Juvenile Piscivore: Implications for Growth and Survival
… processes, I developed and tested an individual-based model (IBM) comprised of three submodels (foraging, growth, and mortality) to predict growth and survival of young-of-year walleye in Illinois. To develop the foraging submodel, I first conducted a series of laboratory experiments …
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Environmental influences on banana shrimps of the Sofala Bank, Mozambique Channel
… of both physical and biological observations, a modelling approach is used. A high-resolution, nested, coastal, Regional Ocean Modeling System (ROMS) of the Sofala Bank is developed. In general, the model agrees well with available observations and literature. The ROMS outputs and self-organizing …
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Assessing the impacts of human disturbance on wildlife: insights from wildfowl on the Exe Estuary.
… Projections of human disturbance using an individual-based model (IBM) validated that Brent goose would need to be disturbed at least 7 times per hour and wigeon would need to be disturbed at minimum of 12 times per hour before they would be unable to compensate. These results indicate that …
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Fate and transport of Asian carp eggs in spawning rivers
… and recruitment were observed. This observation-based technique has led to general guidelines about the river length and hydraulic characteristics required for Asian carp spawning and recruitment. Previous estimates of the minimum river length or stream velocities required to keep eggs in …
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Environmental drivers and advective transport of harmful phytoplankton in North West European shelf seas
… and development;<br/>3) Utilise computational modelling to study environmental drivers and advection of<br/>HABs.<br/>To achieve these aims, field data was collected from two cruises and a glider mission. During the cruises, data on phytoplankton community was collected alongside physical data …
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Modelling the effects of spatio-temporal spawning variability on the transport and retention success of sardine (Sardinops sagax) eggs and larvae around South Africa
… using a Lagrangrian, particle tracking, individual-based model (IBM), coupled with two 3-D hydrodynamic Regional Ocean Modeling System (ROMS) model configurations of different generations. The same IBM is coupled with PLUME, an older ROMS model configuration used in a previous sardine IBM …
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The stability of model ecosystems
… different routes to study ecosystem stability of model ecosystems: classical community ecology and classical population ecology. In community ecology models, we can study the mathematical mechanisms of stability in general, large model ecosystems. In population ecology models, fewer species are …