A Note on the Winter Habits of Eutamias townsendii

Walker, Alex

doi:10.1093/jmammal/4.4.257

Cited by 4 publications

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“…Since it is known that chipmunks store their food in the lining of their nests in the hibernaculum (Broad books 1958), it is consistent with the point of view being developed here that the only chipmunks found in deep torpor in nature were dug out of nests which contained no food (Walker 1923;Anthony 1924). A further point of consistency may relate to Tevis's ( 1955) observations that no chipmunks were active above ground during the winter of his studies in the Lake Almanor region.…”

Section: Hibernation In Species Of Eutamiassupporting

confidence: 79%

“…The fact that so few western chipmunks have been found in a dormant state raises a question about the nature of hibernation in these squirrels. The question is further emphasized by the fact that several observers have reported species of Euta-mias to be active above ground at various times during every month of the winter season (Walker 1923;Taylor and Shaw 1927;Criddle 1943). In the San Bernardino and San Gabriel mountains of southern California, E. speciosus has been observed around public camp grounds in every month of the year ; it appears to become inactive for periods of several days only during times of relatively deep and sustained snow cover and is likely to be active on bright sunny days even in December and January ( Cade, unp~blished).…”

Section: Hibernation In Species Of Eutamiasmentioning

confidence: 99%

“…The literature in natural history and ecology also contains few references to torpidity in western chipmunks, a fact which has not changed appreciably since Howell ( 1923) first called attention to it nearly 40 years ago. Only twice have descriptions been published of naturally hibernating chipmunks (E. townsendii) found torpid in their nests (Walker 1923;Anthony 1924). Grinnell and Storer ( 1924: 81) mention a trapinjured individual of E. speciosus which became torpid and subsequently aroused in captivity, and Criddle ( 1943) gives some information on E. minimus.…”

Section: Introductionmentioning

confidence: 99%

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Observations on Torpidity in Captive Chipmunks of the Genus Eutamias

Cade¹

1963

Ecology

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Section: Hibernation In Species Of Eutamiassupporting

confidence: 79%

Section: Hibernation In Species Of Eutamiasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Observations on Torpidity in Captive Chipmunks of the Genus Eutamias

Cade¹

1963

Ecology

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“…In my study, female chipmunks in the treated site exhibited a positive association with the variation in slash distance about the trapping station (Table 4). Considering that nest sites of the Townsend chipmunk have been associated with stumps, fallen logs, and snags (Walker 1923, Brand 1974, this statistical correlation suggests that the females concentrated their activity around a preferred microhabitat or patch type dominated by down, woody material. Such microhabitat specialization may lead to resource partitioning (Stamp and Ohmart 1978) and differences in food types consumed by animals in one patch type compared with those in another when food resources vary directly with patch type.…”

Section: Discussionmentioning

confidence: 87%

Fungus Consumption by the Siskiyou Chipmunk within a Variously Treated Forest

McIntire¹

1984

Ecology

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Mycophagy (consumption of fungi) by the Siskiyou chipmunk (Eutamias siskiyou) was studied during the summers of 1978 and 1979. Fecal pellets were sampled from livetrapped chipmunks in two sites within a shelterwood—logged coniferous forest in Jackson County, Oregon. Slash (logging residue) was mechanically piled and then burned (treated) in one area but not in another. Habitat analyses indicated that huckleberry (Vaccinimum membranaceum) was severely reduced, and exposure of mineral soil increased in the treated study site. Sixteen genera of hypogeous, mycorrhizal fungi, representing three classes, were identified in fecal samples taken from animals in both sites. Spores of Rhizopogon spp. were most frequently encountered in both sites. The frequencies of occurrence for 11 of the 16 fungal genera were greater for samples from the untreated site, 2 significantly so. Endogone spp. occurred exclusively in fecal samples from the treated site, but no fungal type from this site exhibited a significantly greater frequency. The reduction of spores in samples from the treated site is thought to be a function of diminished sporocarp availability that resulted from slash treatment. Differential microhabitat selection by the sexes may also account for some differences in the observed spore frequencies.

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“…Selected references: Adams and Sutton (1968), Bailey (1936), Meredith (1972) Shaw (1944, Sutton and Nadler (1969), Tevis (1952), Walker (1923) White (1953aWhite ( , 1953b.…”

Section: Genus Eutamias: Western Chipmunksmentioning

confidence: 99%

Natural History of Oregon Coast Mammals

Maser¹,

Mate²,

Franklin³

et al. 1981

109

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Maser, Chris, Bruce R. Mate, Jerry F. Franklin, and C. T. Dyrness. 1981 The book presents detailed information on the biology, habitats, and life histories of the 96 species of mammals of the Oregon coast. Soils, geology, and vegetation are described and related to wildlife habitats for the 65 terrestrial and 31 marine species. The book is not simply an identification guide to the Oregon coast mammals but is a dynamic portrayal of their habits and habitats. Life histories are based on fieldwork and available literature. An extensive bibliography is included. Personal anecdotes of the authors provide entertaining reading. The book should be of use to students, educators, land-use planners, resource managers, wildlife biologists, and naturalists.Keywords: Natural history, mammals (marine), mammals (land), Oregon coast, wildlife habitat. ForewordIt is a privilege to write a foreword to Natural Hisfory of Oregon Coast Mammals. I have observed the production of this book since its inception and believe it has two qualities that especially recommend it: First, it is timely, attuned to the almost indescribable sense of frustrated urgency that environmental matters must be dealt with by a mixture of wisdom, information, and common sense that seems impossible to obtain. Second, this book is one of authority, by writers who are able to give the best and most accurate accounting of the ecosystems that make up the coastal region of Oregon. It can be looked on as a model for similar treatises, and in fact it contains much information that is applicable to other areas. Allow me to expand briefly on these two points.We are living in a schizophrenic time: There is need for wise use of our resources and there is the companion need for sensible conservation. As residents of the Pacific Northwest, a phenomenally satisfying part of the world, we see the requirement and the push to provide an ever-better life for more and more people. This may be called the "Development Syndrome." It is well known and self explanatory.At the same time we know the extreme preciousness of naturalness and nature, called by many terms and related to inner feelings. This may be termed simply and best as the "Concern for Nature Syndrome." This syndrome is difficult to describe for it is different in each person. It embodies emotional requirements of feelings and perceptions. It combines remembrances with objective appraisals and hopes for the future. It is concerned with a basic need for stability in a changing world, for places that are changeless from childhood memories through present experiences into plans for the future.As many writers have compellingly stated, wilderness (or varieties of wilderness as perceived by the individual) is the symbolic evidence of the concern for nature. We, each of us, have our own needs and our own interpretations, stated or not, as to how these needs may be manifested and fulfilled. Theodore Roosevelt wrote iii (Hunting Trips of a Ranchman, Century, 1885): "In the after years there shall come forever the memory ...

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A Note on the Winter Habits of Eutamias townsendii

Cited by 4 publications

References 0 publications

Observations on Torpidity in Captive Chipmunks of the Genus Eutamias

Observations on Torpidity in Captive Chipmunks of the Genus Eutamias

Fungus Consumption by the Siskiyou Chipmunk within a Variously Treated Forest

Natural History of Oregon Coast Mammals

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