D. R. Bowen

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Predicting how marine mammal populations respond to habitat changes will be essential for developing conservation management strategies in the 21st century. Responses to previous environmental change may be informative in the development of predictive models. Here we describe the likely effects of the last ice age on grey seal population size and(More)
Influenza A virus (IAV) has been associated with multiple unusual mortality events (UMEs) in North Atlantic pinnipeds, frequently attributed to spillover of virus from wild-bird reservoirs. To determine if endemic infection persists outside of UMEs, we undertook a multiyear investigation of IAV in healthy, live-captured Northwest Atlantic gray seals(More)
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Vargas 2003. Otter (Lutra lutra) distribution modeking at two resolution scales suited to conservation planning in the Iberian Peninsula. Sex differences in the diving behaviour of a size-dimorphic capital breeder: the grey seal. 2002. Isotopic tracking of prehistoric pinniped foraging and distributtion along the central California coast: preliminary(More)
The QFASA model uses several sources of data, each of which requires careful consideration by the researcher (Iverson et al. 2004). We evaluated the sensitivity of QFASA diet estimates to the following model inputs: prey species included (prey library), fatty acid (FA) subsets, and calibration coefficients (CC). We did this by repeatedly estimating diets(More)
The purpose of the air distribution system in a fluidised bed combustor is to provide a reasonably uniform spread of combustion air over the entire horizontal cross-sectional area of the bed. One of the simplest, and hence cheapest, forms of air distributor is the sparge pipe design, in which an array of horizontal pipes is fitted at the base of the bed.(More)
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