Bison ecology in relation to agricultural development in the Slave River lowlands, NWT [microform] / edited by H.W. Reynolds and A.W.L. Hawley.
Populations of Lesser Snow Geese Anser caerulescens caerulescens in the mid-continent of North America have increased to the point where they are causing serious damage to some Arctic coastal ecosystems. A recent modelling exercise by R.F. Rockwell and colleagues (referred to as the Original Model)...
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| Corporate Author: | |
|---|---|
| Other Authors: | , |
| Format: | Government Document Microfilm Book |
| Language: | English |
| Published: |
[Ottawa, Ont.] :
Environment Canada, Canadian Wildlife Service,
1987.
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| Series: | Occasional paper (Canadian Wildlife Service) ;
no. 63. |
| Subjects: |
MARC
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| 245 | 0 | 0 | |a Bison ecology in relation to agricultural development in the Slave River lowlands, NWT |h [microform] / |c edited by H.W. Reynolds and A.W.L. Hawley. |
| 260 | |a [Ottawa, Ont.] : |b Environment Canada, Canadian Wildlife Service, |c 1987. | ||
| 300 | |a 74 pages : |b illustrations ; |c 28 cm. | ||
| 336 | |a text |b txt |2 rdacontent. | ||
| 337 | |a microform |b h |2 rdamedia. | ||
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| 490 | 1 | |a Occasional paper / Canadian Wildlife Service, |x 0576-6370 ; |v no. 63. | |
| 500 | |a Abstract in English and French. | ||
| 500 | |a "CW69-1/63E." | ||
| 504 | |a Includes bibliographical references (pages 68-71) | ||
| 505 | 2 | |a Description of the Slave River lowlands / Hal W. Reynolds -- Seasonal distribution, group size and structure, and movements of bison herds / George W. Calef and Jack Van Camp -- Population dynamics of bison / Jack Van Camp and George W. Calef -- Predation on bison / Jack Van Camp -- Diseases affecting bison / Eric Broughton -- Vegetation, bison diets, and snow cover / Hal W. Reynolds and Donald G. Peden -- Seasonal variation in forage quality / Hal W. Reynolds and Alexander W.L. Hawley -- Bison and cattle use of forages / Alexander W.L. Hawley -- Forage potential for livestock production / William L. Pringle -- Management alternatives for ungulate production in the Slave River lowlands / Alexander W.L. Hawley and Hal W. Reynolds -- Enhancing ungulate productivity in the Slave River lowlands / Alexander W.L. Hawley and Hal W. Reynolds. | |
| 520 | |a Populations of Lesser Snow Geese Anser caerulescens caerulescens in the mid-continent of North America have increased to the point where they are causing serious damage to some Arctic coastal ecosystems. A recent modelling exercise by R.F. Rockwell and colleagues (referred to as the Original Model) suggested that increasing harvest rates of adults to approximately twice the average level in recent years would lead to negative population growth and hence (under certain assumptions) be sufficient to control the population. However, some of the parameters in their models appear to have been inappropriate. Based on revised parameters, which are consistent with analyses of recent data, we suggest that an increase of 3.0- to 7.3-fold in the harvest, relative to the same period analyzed in the Original Model, would have been required to reduce populations at the desired rate in 1994. Despite recent increases in harvest, we predict that a further increase of 2.1- to 4.7-fold, relative to the estimated harvest for 1997, would be needed in 1999 to achieve this population reduction. Wildlife managers need to be aware of these larger targets when considering appropriate measures to control the population. Given the uncertain ties in many parameter estimates, further modelling, combined with ongoing monitoring of population size and demographic parameters, will be required to evaluate and refine any management actions. | ||
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| 650 | 0 | |a American bison |x Ecology. | |
| 650 | 0 | |a Wildlife conservation |z Canada. | |
| 700 | 1 | |a Reynolds, H. W. |q (Haldane Walter) | |
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| 830 | 0 | |a Occasional paper (Canadian Wildlife Service) ; |v no. 63. |0 http://id.loc.gov/authorities/names/n83722625. | |
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