Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-07T12:32:54.319Z Has data issue: false hasContentIssue false

Implications of Subfossil Coleoptera for the Evolution of the Mima Mounds of Southwestern Puget Lowland, Washington

Published online by Cambridge University Press:  20 January 2017

Robert E. Nelson*
Affiliation:
Department of Geology, Colby College, 5804 Mayflower Hill, Waterville, Maine, 04901-8858

Abstract

The origin of Washington State's Mima Mounds has been debated for over a century, with numerous mechanisms being postulated. Subfossil Coleopteran (beetle) remains recovered from the base of a mound at Mima Prairie consist of species that would be expected in rodent burrows and nests; all but one species are obligate burrow inhabitants. These results suggest the past presence of fossorial rodents (probably pocket gophers,Thomomys mazama) in the mounds, although none live there at present. Whether or not the gophers created the mounds, they may well have been instrumental in maintaining mound geometry until very recently.

Type
Original Articles
Copyright
University of Washington

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Arnett, R. H, 1968, The Beetles of North America, The American Entomological Institute, Ann Arbor. Google Scholar
Barnosky, C. W, 1984, Late Pleistocene and early Holocene environmental history of southwestern Washington State, U.S.A, Canadian Journal of Earth Sciences, 21, 619629.CrossRefGoogle Scholar
Barnosky, C. W, 1985, Late Quaternary vegetation near Battle Ground Lake, southern Puget Trough, Washington, Geological Society of America Bulletin, 96, 263271.Google Scholar
Berg, A. W, 1990, Formation of Mima Mounds: A seismic hypothesis, Geology, 18, 281284.2.3.CO;2>CrossRefGoogle Scholar
Berg, A. W, 1991, Formation of Mima Mounds: A seismic hypothesis, reply, Geology, 19, 284285.Google Scholar
Clague, J. J, Armstrong, J. E, Mathews, W. H, 1980, Advance of the Late Wisconsin Cordilleran Ice Sheet in southern British Columbia since 22,000 Yr B.P, Quaternary Research, 13, 322326.Google Scholar
Coope, G. R, 1986, Coleoptera analysis, Handbook of Holocene Palaeoecology and Palaeohydrology, Wiley, New York, p. 703713.Google Scholar
Cox, G. W, Gakahu, C. G, 1986, A latitudinal test of the fossorial rodent hypothesis of Mima mound origin in western North America, Zeitschrift für Geomorphologie, 30, 485501.Google Scholar
Cox, G. W, Scheffer, V. B, 1991, Pocket gophers and Mima terrain in North America, Natural Areas Journal, 11, 193198.Google Scholar
Dahlquest, W. W, Scheffer, V. B, 1942, The origin of the Mima Mounds of western Washington, Journal of Geology, 50, 6884.Google Scholar
Elias, S. A, 1994, Quaternary Insects and Their Environments, Smithsonian Institution Press, Washington. Google Scholar
Hallet, B., Sletten, R. S., 1994, Mima Mounds: Constraints in the timing of formation, Geological Society of America Abstracts with Programs, 1994 Annual Meeting, Seattle, 26(7,), A-300.Google Scholar
Hansen, R. M, 1962, Movements and survival ofThomomys talpoides , Ecology, 43, 151154.CrossRefGoogle Scholar
Hatch, M. H, 1961, The Beetles of the Pacific Northwest. III. Pselaphidae and Diversicornia I, Univ. of Washington Press, Seattle. Google Scholar
LeConte, J, 1877, Hog wallows or prairie mounds, Nature, 15, 530531.CrossRefGoogle Scholar
Peck, S. B, 1973, A systematic revision and evolutionary biology of thePtomaphagus Adelops , Bulletin of the Museum of Comparative Zoology, 145, 29162.Google Scholar
Saucier, R. T, 1991, Formation of Mima Mounds: A seismic hypothesis, Comment, Geology, 19, 284.Google Scholar
Thorn, C. E, 1982, Gopher disturbance: Its variability by Braun–Blanquet vegetation units in the Niwot Ridge alpine tundra zone, Colorado Front Range, U.S.A, Arctic and Alpine Research, 14, 4551.CrossRefGoogle Scholar
Thorson, R. M, 1980, Ice-sheet glaciation of the Puget Lowland, Washington, during the Vashon Stade (Late Pleistocene), Quaternary Research, 13, 303321.Google Scholar
Washburn, A. L., 1988, Mima Mounds: An Evaluation of Proposed Origins with Special Reference to the Puget Lowland, Washington Division of Geology and Earth Resources, Olympia, WA. Google Scholar