Distribution and Movements of Moose (Alces alces) in Relation to the Trans-Alaska Oil Pipeline’
the distribution and movements of moose adjacent to the Trans-Alaska Pipeline near Big Delta, Alaska, were examined. Within a 15 km wide corridor centered on the pipeline, moose distribution was independent of the distance from the pipeline. Of 175 moose trails examined, most (94%) crossed the pipel...
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| Format: | Text |
| Language: | English |
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1985
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.544.5916 http://pubs.aina.ucalgary.ca/arctic/arctic39-2-138.pdf |
| Summary: | the distribution and movements of moose adjacent to the Trans-Alaska Pipeline near Big Delta, Alaska, were examined. Within a 15 km wide corridor centered on the pipeline, moose distribution was independent of the distance from the pipeline. Of 175 moose trails examined, most (94%) crossed the pipeline successfully upon entering the right-of-way regardless of pipe mode or pipe height above ground. Pipe heights above 1.5 m were adequate for moose passage, but greater heights up to 2.7 m were preferred. Sections of pipe that were buried or that were specially elevated to facilitate moose passage did not receive preferential use. Moose moved in a meandering fashion whether they were crossing the pipeline or moving within habitats in distant areas. The results of this study supported the hypothesis that the distribution and local movements of moose were not significantly affected by the pipeline. Key words: moose (Alces alces), movements, pipeline, crossing success, habitat use, effects of development &SUMÉ. Au cours des derniers mois des hivers de 1982 et 1983, la distribution et les déplacements d’orignaux le long du pipeline Trans-Alaska près de Big Delta, en Alaska, furent examinés. Dans un corridor d’une largeur de 15 km c e n e sur le pipeline, la distribution d’orignaux était indépendante de leur distance du pipeline. Des 175 pistes d’orignal examinées, la plupart (94%) traversèrent le pipeline sans problèmes indiféremment du type de conduit ou de la hauteur de la canalisation parrapport au sol. Une hauteur de plus de 1.5 m permettait de façon adéquate le passage d’orignaux, mais les sections d’une hauteur de plus de 2.7 m étaient préfédes. Les sections enterrées ou sp6cialement élevées en vue de permettre le passage d’orignaux ne recurent aucun usage préférentiel. Les orignaux se deplaçaient de façon sinueuse autant dans leurs traverses du pipeline que dans leurs mouvements dans des habitats lointains. Les résultats de cette étude appuient l’hypothèse selon laquelle la distribution et les déplacements ... |
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