Some Oregon Phenacomys

Walker, Alex

doi:10.1093/jmammal/9.3.254

Cited by 5 publications

(3 citation statements)

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“…For example, Walker (1928Walker ( , 1930) collected a number of tree voles on Cape Lookout and Cape Meares and a logger (D Bake) collected 98 tree voles while harvesting old-growth and mature forests in Tillamook and Lincoln Counties in 1966-1977(Forsman and Swingle 2010. Another logger (R Brown), collected a tree vole near Saddle Mountain in 1967 (University of Puget Sound Slater Museum Specimen PSM23927), and Forsman and others (2004) found remains of 2 tree voles in pellets collected from Northern Spotted Owls (Strix occidentalis caurina) near Jewell in Clatsop County.…”

Section: Discussionmentioning

confidence: 99%

Distribution and Abundance of Tree Voles in the Northern Coast Ranges of Oregon

Price¹,

Mowdy²,

Swingle³

et al. 2015

Northwestern Naturalist

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We sampled 86 randomly selected survey plots to evaluate the distribution and abundance of Red Tree Voles (Arborimus longicaudus) on the Tillamook and Clatsop State Forests in the northern Coast Ranges of Oregon in 2011-2013. We conducted surveys by visually searching for tree vole nests while walking along 500 m of transect in each plot. Trees with potential nest structures were climbed to determine if the structures were tree vole nests. We found tree vole nests in only 4 random plots, all of which were located near the coast, at the western edge of the Tillamook State Forest. Of 33 tree vole nests located, 20 (61%) were in old forests ($80 y old), and 13 (39%) were in 1 plot in a young forest that was 65 y old. We concluded that tree voles were absent from most of the Tillamook and Clatsop State Forests, probably due to the fact that most of the area was either logged or burned in the early 1900s, and subsequently intensively managed on short rotations. We also suggest that remnant stands of old forest on Bureau of Land Management and state lands are acting as source populations from which tree voles populate adjacent young forests. Cuttings found in nests provided evidence that most of the voles were feeding on needles of Western Hemlock (Tsuga heterophylla) or Sitka Spruce (Picea sitchensis).

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Section: Discussionmentioning

confidence: 99%

Distribution and Abundance of Tree Voles in the Northern Coast Ranges of Oregon

Price¹,

Mowdy²,

Swingle³

et al. 2015

Northwestern Naturalist

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“…We were elated by Doug's quick response, so we immediately called him up and arranged to meet with him at his home on the outskirts of Tillamook. We met on 1 August 2003 and spent a couple of hours sitting on Doug's couch, talking to him about his days in the woods and his interactions with Murray Johnson and Alex Walker, another Tillamook resident and one of the earliest naturalists to study mammals in northwest Oregon (Walker 1928(Walker , 1930. After our visit, we were so impressed with Doug and his unique contribution to science that we were inspired to write the following article.…”

Section: Eric D Forsman and James K Swinglementioning

confidence: 99%

Doug Bake and Red Tree Voles: A Tale of Discovery in the Pacific Northwest

Forsman¹,

Swingle²

2010

Northwestern Naturalist

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“…In addition to being the only truly arboreal Microtine rodent, tree voles are an important food source for many small mammals and birds, including weasels and owls (Forsman et al 1984(Forsman et al , 2004Graham and Mires 2005;Swingle 2005). While they are primarily a resident of Douglas-fir (Pseudotsuga menziesii) forests, a small subset of the tree vole population in coastal northwest Oregon live and feed almost exclusively in forests of Western Hemlock (Tsuga heterophylla) and Sitka Spruce (Picea sitchensis) (Walker 1928(Walker , 1930Clifton 1960). Occasionally they will utilize Grand fir (Abies grandis), Bishop Pine (Pinus muricata) or Monterey Pine (Pinus radiata) canopies for food and nesting sites, especially in California (Wooster and Town 2002;Forsman and Swingle unpublished data, L. Diller personal communication).…”

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confidence: 99%

Terpenoid Resin Distribution in Conifer Needles with Implications for Red Tree Vole, <em>Arborimus longicaudus</em>, Foraging

2009

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Tree voles are dietary specialists, feeding almost exclusively on conifer needles and bark. They reduce their exposure to conifer chemical defenses by physically removing resin ducts from many needles before ingesting the remaining tissue. The portion of needle removed differs among tree species, depending on the location of the resin ducts. To evaluate the amount of resin avoided by this behavior we removed the resin ducts from Douglas-fir, Western Hemlock, and Sitka Spruce needles and used gas chromatography to compare volatile resin concentrations in needles with and without the resin ducts removed. Needle tissues without resin ducts contained no terpenoid resin, demonstrating that tree voles can regulate the nutritional quality of their diet by controlling the amount of resin ingested. We suggest that differences in the physical structure (and possibly chemical composition of terpenes) of the needles make it difficult for voles to easily switch between tree hosts.

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Some Oregon Phenacomys

Cited by 5 publications

References 0 publications

Distribution and Abundance of Tree Voles in the Northern Coast Ranges of Oregon

Distribution and Abundance of Tree Voles in the Northern Coast Ranges of Oregon

Doug Bake and Red Tree Voles: A Tale of Discovery in the Pacific Northwest

Terpenoid Resin Distribution in Conifer Needles with Implications for Red Tree Vole, <em>Arborimus longicaudus</em>, Foraging

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