The impact of landscape disturbance on grizzly bear habitat use in the Foothills Model Forest, Alberta, Canada

Berland, A. J.; Nelson, Trisalyn A.; Stenhouse, Gord; Graham, Karen; Cranston, Jerome

doi:10.1016/j.foreco.2008.07.019

Cited by 46 publications

(30 citation statements)

References 35 publications

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“…In past studies, grizzly bears have been shown to be attracted to disturbed areas and to select them preferentially, especially following emergence from the den (Berland et al, 2008;Nielsen et al, 2004a). Grizzly bear foraging behaviour varies during the growing season, with three distinct phases identified (hypophagia (1st May to 15th June), early hyperphagia (16th June to 15th August) and late hyperphagia (16th August to 15th October)) (Berland et al, 2008).…”

Section: Impacts On Grizzly Bear Habitat Use and Mortalitymentioning

confidence: 99%

“…Forest disturbance can fragment suitable habitat reducing forest patch size, increase edges and result in increasing patch isolation; however, disturbances can also increase the availability of open habitat areas and associated resources, such as emerging grasses and herbaceous plants (Berland et al, 2008). For example, grizzly bear (Ursus arctos L.) habitat use has been shown to be influenced by the temporal and spatial distribution of disturbance within bear home ranges.…”

Section: Introductionmentioning

confidence: 99%

“…Bears prefer a matrix of habitat types, incorporating both forest clearings and closed forest (Blanchard, 1983;Hamer and Herrero, 1987). Disturbed areas, such as fire scars, roadside verges and harvested forest areas, provide highquality forage (Berland et al, 2008;Roever et al, 2008), while closed forest provides security when bedding (Munro et al, 2006). Grizzly bear food availability has been shown to vary across seasons and by disturbance type (Servheen, 1983), with key seasonal food resources, such as cow parsnip (Heracleum lanatum), particularly abundant along forest edges (Turner et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

“…Grizzly bear food availability has been shown to vary across seasons and by disturbance type (Servheen, 1983), with key seasonal food resources, such as cow parsnip (Heracleum lanatum), particularly abundant along forest edges (Turner et al, 2003). As such, edges and disturbed areas impact grizzly bear habitat through changes in seasonal food availability and the bear's use of disturbed areas, as well as movement patterns, will vary over the growing season (Berland et al, 2008;Nielsen et al, 2004b). However, bears also experience increased mortality when using such areas, due to a higher risk of conflict with humans (McLellan, 1998;Nielsen et al, 2004c) and some studies indicate that bears avoid clear-cuts (Zager et al, 1983;McLellan and Hovey, 2001).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Characterizing stand-replacing disturbance in western Alberta grizzly bear habitat, using a satellite-derived high temporal and spatial resolution change sequence

Gaulton

Hilker

Wulder

et al. 2011

Forest Ecology and Management

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Section: Impacts On Grizzly Bear Habitat Use and Mortalitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterizing stand-replacing disturbance in western Alberta grizzly bear habitat, using a satellite-derived high temporal and spatial resolution change sequence

Gaulton

Hilker

Wulder

et al. 2011

Forest Ecology and Management

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“…Berland et al 2008, Waterhouse et al 2010. As with all large-area models, we recommend using our results for strategic planning, and suggest using finer-scaled data products, such as aerial photo interpretation habitat inventories (e.g.…”

Section: Discussionmentioning

confidence: 99%

Estimating 30-year change in coastal old‑growth habitat for a forest-nesting seabird in British Columbia, Canada

Long¹,

Hazlitt²,

Nelson³

et al. 2011

Endang. Species. Res.

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The marbled murrelet Brachyramphus marmoratus is an old-growth dependent species that nests in North American coastal forests. Canadian populations and occurrence data are limited; however concern over loss of nesting habitat in coastal British Columbia led to an assessment of 'threatened' by the Committee on the Status of Endangered Wildlife in Canada, and subsequent listing under the Canadian Species at Risk Act. Information on the availability and patterns of change in nesting habitat is essential for making land-use decisions and for monitoring the conservation status of this wide-ranging seabird. We estimated potential marbled murrelet nesting habitat for the coast of British Columbia at 2 points in time, 1978 and 2008, and quantified habitat loss and modelled habitat recruitment over this 30 yr time period, a key time frame for the assessment of the conservation status of this high-profile species. We implemented 3 predictive habitat suitability models for the province of British Columbia, ranging from exclusive to more inclusive models. Based on the various habitat model scenarios, including corrections using aspatial harvest records, we estimated that 20 to 24% of potential marbled murrelet nesting habitat was lost to forest harvest and fire from 1978 to 2008. If modelled habitat recruitment is considered, then net change in potential nesting habitat is 20 to 22% loss. Our estimates of potential murrelet habitat and subsequent habitat loss and change are influenced by numerous sources of uncertainty, such as actual suitability of forest stands for breeding murrelets and known deficiencies in the forest harvest spatial datasets. However, the results presented here provide the first range of province-wide habitat change possibilities and are consistent with previous regional analyses of potential marbled murrelet habitat loss in British Columbia.

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Satellite‐based habitat monitoring reveals long‐term dynamics of deer habitat in response to forest disturbances

Oeser

Heurich

Senf

et al. 2021

Ecological Applications

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show abstract

The impact of landscape disturbance on grizzly bear habitat use in the Foothills Model Forest, Alberta, Canada

Cited by 46 publications

References 35 publications

Characterizing stand-replacing disturbance in western Alberta grizzly bear habitat, using a satellite-derived high temporal and spatial resolution change sequence

Characterizing stand-replacing disturbance in western Alberta grizzly bear habitat, using a satellite-derived high temporal and spatial resolution change sequence

Estimating 30-year change in coastal old‑growth habitat for a forest-nesting seabird in British Columbia, Canada

Satellite‐based habitat monitoring reveals long‐term dynamics of deer habitat in response to forest disturbances

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