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| Content Provider | Springer Nature Link |
|---|---|
| Author | Giroday, Honey Marie C. Carroll, Allan L. Lindgren, B. Staffan Aukema, Brian H. |
| Copyright Year | 2011 |
| Abstract | Mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae, Scolytinae), is a forest insect that undergoes intermittent population eruptions, causing landscape-level mortality to mature pines. Currently, an outbreak covers over 16.3 million ha of British Columbia and Alberta in western Canada. Recent incursion into the jack pine (Pinus banksiana Lamb.) of northwestern Alberta threatens further range expansion through the boreal forest to central and eastern Canada. The spread from British Columbia into northwestern Alberta has been facilitated by above-canopy dispersal of the insect by meso-scale atmospheric currents. At these scales, dispersing D. ponderosae may behave like inert particles, causing terrain-induced tropospheric convective and advective currents to influence population dispersal and establishment. We use spatial point process regression models to examine the association of meso-scale variables, including landscape features and their orientations, habitat suitability, elevation and treatment efforts, with occurrence of D. ponderosae infestations in 2004, 2005, and 2006. Infestations of D. ponderosae primarily established in canyons and valleys, before moving into more open-sloped areas. Southwestern slopes of midslope ridges and small hills, southwest facing open slopes, and valleys that run in a northeast–southwest cardinal direction were positively associated with higher intensities of infestation. This study provides insight into the influences of complex terrain on landscape disturbance by a forest insect, and can be used to prioritize areas for potential management. |
| Starting Page | 1097 |
| Ending Page | 1110 |
| Page Count | 14 |
| File Format | |
| ISSN | 09212973 |
| Journal | Landscape Ecology |
| Volume Number | 26 |
| Issue Number | 8 |
| e-ISSN | 15729761 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2011-07-19 |
| Publisher Place | Dordrecht |
| Access Restriction | Subscribed |
| Subject Keyword | Dendroctonus ponderosae Dispersal Jack pine Landscape features Lodgepole pine Mountain pine beetle Mountains Boreal forest Valleys Forestry Management Plant Ecology Landscape Ecology Forestry Plant Sciences Ecology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Geography, Planning and Development Ecology Nature and Landscape Conservation |
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