Patterns of Coexistence in Synaptomys Cooperi and Microtus Pennsylvanicus

Abstract

JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. These results suggest that in the southern Appalachians, Synaptomys is excluded from preferred habitats by Microtus and, as a result, lives where cover is sparse and food is low in nutritional value. Although these species do compete, this competition is relaxed when Microtus populations decline. When given access to preferred habitats the food habits of Synaptomys change and resemble those of Microtus, suggesting that the ultimate limiting resource is food. The combination of wider habitat tolerances by Synaptomys and temporal variation in intensity of competition allows coexistence of these species on a regional basis. Ecological Society of America

Habitat selection in cricetine rodent population on maize field in the Pampa region of Argentina

“…Human activity is also considered a «key factor» (de Villafañe et al 1988). The results from this study confirm the importance of habitat selection in the distribution and abundance of four cricetine species such as other authors have seen in small rodents (Abramsky 1981 ;Linzey 1984 ;Price and Warer 1985 ;Rosenzweig 1973 ;.…”

Chronic exposure to gamma radiation of wild populations of meadow voles (Microtus pennsylvanicus)

“…The only potentially confounding factor was the presence of a small, resident population of bog lemmings (S. cooperi) on the irradiated grid in the high dose rate experiment (up to 23 lemmings in October 1984, versus no more than 6 on any control meadow). The layout of the ZEUS experiments (clearings within a forest, and/or the large boulders on meadow 5), may have facilitated establishment of lemmings dispersing through the forest (Linzey, 1984;Krupa and Haskins, 1996). Unlike previous sampling (Schwartz, 1985), pitfall trapping and ''island meadow'' trapping facilitated detection of an outbreak of lemmings in 1983-1984.…”

Interspecific Interactions and Habitat Use by Prairie Voles (Microtus ochrogaster) and Meadow Voles (M. pennsylvanicus)

“…Our results are similar to those of Douglass (1976), who concluded from enclosure studies that the effects of interspecific social interactions on habitat use were minor in comparison with different habitat preferences of meadow voles and montane voles (M. montanus). Nevertheless, meadow voles appear to exclude smaller species of voles and other rodents from certain habitats (Getz, 1961b;Grant, 1969Grant, , 1970Grant, , 1971Linzey, 1984;Krupa and Haskins, 1996;Rose and Ford, 2012). Thus, patterns of habitat use by meadow voles and voles of similar body size (e.g., prairie voles and montane voles) may result from a combination of differences in habitat preference or tolerance and interspecific competition.…”