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Prey consumption by Northwest Atlantic harp seals, Phoca groenlandica, depends on population size, seasonal and spatial distribution, energy requirements, energy content of prey and diet composition. There is uncertainty in our knowledge of all these components. This carries through into uncertainty...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.574.3900 2023-05-15T15:27:36+02:00 and Peter A. Shelton William G. Warren Garry B. Stenson John W. Lawson The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.574.3900 http://journal.nafo.int/J22/Shelton.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.574.3900 http://journal.nafo.int/J22/Shelton.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://journal.nafo.int/J22/Shelton.pdf Key words consumption Monte Carlo simulation harp seal uncertainty text ftciteseerx 2016-01-08T12:40:53Z Prey consumption by Northwest Atlantic harp seals, Phoca groenlandica, depends on population size, seasonal and spatial distribution, energy requirements, energy content of prey and diet composition. There is uncertainty in our knowledge of all these components. This carries through into uncertainty in any estimate of prey consumption. Available information ranges from sample estimates, sometimes with conventional measures of precision (standard errors), to guesses based on unquantified observation. An attempt is made here to quantify the effect of some of the major sources of uncertainty, particularly with respect to the amount of Atlantic cod (Gadus morhua) eaten in NAFO Division 2J and 3KL (off southern Labrador and northeast Newfoundland). The primary objective is to determine which components contribute most to the uncertainty, as a guide for research planning. However, a thorough quantification of uncertainty would also be useful in evalu-ating alternative management options for harp seals which have the objective of reducing possible impacts on prey. This work examines the effect on consumption estimates of un-certainty associated with the harp seal populatoin size as well as the effect of additional sources of uncertainty attributable to residency of harp seals, energy requirements, spe-cies composition of the diet in the inshore and offshore, and the calorific value of prey. Text atlantic cod Gadus morhua Harp Seal Newfoundland Northwest Atlantic Phoca groenlandica Unknown Newfoundland |
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Key words consumption Monte Carlo simulation harp seal uncertainty |
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Key words consumption Monte Carlo simulation harp seal uncertainty Peter A. Shelton William G. Warren Garry B. Stenson John W. Lawson and |
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Key words consumption Monte Carlo simulation harp seal uncertainty |
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Prey consumption by Northwest Atlantic harp seals, Phoca groenlandica, depends on population size, seasonal and spatial distribution, energy requirements, energy content of prey and diet composition. There is uncertainty in our knowledge of all these components. This carries through into uncertainty in any estimate of prey consumption. Available information ranges from sample estimates, sometimes with conventional measures of precision (standard errors), to guesses based on unquantified observation. An attempt is made here to quantify the effect of some of the major sources of uncertainty, particularly with respect to the amount of Atlantic cod (Gadus morhua) eaten in NAFO Division 2J and 3KL (off southern Labrador and northeast Newfoundland). The primary objective is to determine which components contribute most to the uncertainty, as a guide for research planning. However, a thorough quantification of uncertainty would also be useful in evalu-ating alternative management options for harp seals which have the objective of reducing possible impacts on prey. This work examines the effect on consumption estimates of un-certainty associated with the harp seal populatoin size as well as the effect of additional sources of uncertainty attributable to residency of harp seals, energy requirements, spe-cies composition of the diet in the inshore and offshore, and the calorific value of prey. |
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The Pennsylvania State University CiteSeerX Archives |
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Text |
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Peter A. Shelton William G. Warren Garry B. Stenson John W. Lawson |
author_facet |
Peter A. Shelton William G. Warren Garry B. Stenson John W. Lawson |
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Peter A. Shelton |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.574.3900 http://journal.nafo.int/J22/Shelton.pdf |
geographic |
Newfoundland |
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Newfoundland |
genre |
atlantic cod Gadus morhua Harp Seal Newfoundland Northwest Atlantic Phoca groenlandica |
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atlantic cod Gadus morhua Harp Seal Newfoundland Northwest Atlantic Phoca groenlandica |
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http://journal.nafo.int/J22/Shelton.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.574.3900 http://journal.nafo.int/J22/Shelton.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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