Population Dynamics of Microtus and Sigmodon in Central Kansas

Terman, Max R.

doi:10.2307/3627385

Cited by 10 publications

(4 citation statements)

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“…Alternatively, cotton rats (a behaviorally dominant competitor; Martin 1956, Frydenhall 1969, Terman 1978, Glass and Slade 1980, Prochaska and Slade 1981 may have limited vole distribution across block size. Earlier studies provide strong evidence of such competitive interactions within the system (Foster and Gaines 1991, Diffendorfer et al 1995a, b, 1996.…”

Section: Patterns Across Block Size and Successional Phasementioning

confidence: 99%

“…2. Deer mice.-Deer mice are one of the most common and widespread mammal species in North America, occurring in a wide variety of habitats (Baker 1968, Meserve 1976, Hansen and Warnock 1978, Terman 1978, Johnson and Gaines 1988. In eastern Kansas, deer mice prefer habitat with relatively high grass cover (Whitaker 1967).…”

Section: Patterns Across Block Size and Successional Phasementioning

confidence: 99%

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The Interaction of Habitat Fragmentation, Plant, and Small Mammal Succession in an Old Field

Schweiger

Diffendorfer

Holt

et al. 2000

Ecological Monographs

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We compared the density and spatial distribution of four small mammal species (Microtus ochrogaster, Peromyscus maniculatus, Sigmodon hispidus, and P. leu-copus) along with general measures of an old field plant community across two successional phases (1984-1986 and 1994-1996) of an experimental study of fragmentation in eastern Kansas. During the early phase the plant community was characterized by little spatial or temporal variance across patch size, consistent with spatially neutral models of succession. In contrast, there was a strong, species-specific effect of patch size on small mammal species distribution and abundance. The lack of variance in vegetation structure across patch size during the early seres suggests that small mammal distributions were responding in large part to features of the system other than variance in vegetation structure and composition across patch size. As succession proceeded, the colonization of the system by woody plant species precipitated a series of patch size effects on plant community composition. Differential habitat selection by small mammals at the patch scale tracked these changes in plant distribution. For example, M. ochrogaster and S. hispidus shifted their distributions away from less fragmented patches toward smaller patches, where retarded plant succession had maintained an earlier sere. P. leucopus successfully colonized and maintained high densities only on large patches, where plant succession had progressed most rapidly toward a woody-species-dominated community. Our results highlight the role of landscape structure in long-term community dynamics and indicate that some of the complexity observed in successional systems may result from the structure and composition of the landscape mosaic. In general, our results suggest that to fully understand long-term change within communities, the influence of landscape structure on patterns of heterogeneity in both vegetation and consumer dynamics must be understood. Moreover, the long-term and landscape-scale perspectives afforded by our study provide insight into community dynamics that might otherwise be missed.

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Section: Patterns Across Block Size and Successional Phasementioning

confidence: 99%

Section: Patterns Across Block Size and Successional Phasementioning

confidence: 99%

The Interaction of Habitat Fragmentation, Plant, and Small Mammal Succession in an Old Field

Schweiger

Diffendorfer

Holt

et al. 2000

Ecological Monographs

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“…This behavior, combined with persistence rates that were often higher on larger patches, suggests that voles were probably successful at keeping intruders away from traps in their territories. Cotton rats are also aggressive and territorial (Terman 1978), but until the last season of the project there were so few of them that they were probably not effective at defending territories.…”

Section: Small Mammals and Habitat Mosaicsmentioning

confidence: 99%

The Effects of a Successional Habitat Mosaic On a Small Mammal Community

Foster¹,

Gaines²

1991

Ecology

109

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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.. Ecological Society of America is collaborating with JSTOR to digitize, preserve and extend access to Ecology.Abstract. Small herbivorous mammals living in successional patchy environments may be affected by both patch size variations and successional changes. If patch size affects densities of residents then larger patches should have higher densities compared to smaller patches because larger patches often have greater habitat diversity and lesser chances of stochastic events destroying the population. If patch size affects length of time animals spend on patches (persistence rates) then smaller patches should have lower persistence rates compared to larger patches because smaller patches contain fewer resources. Larger animals may be constrained by body size, as well as population size, to reside only on the larger patches because smaller patches do not contain enough resources. If successional changes affect resident animals that are host specific on colonizing plant species, then the effects may be noticeable immediately following field abandonment because plant species replacement rates are most rapid then.Four small mammal species were included: Sigmodon hispidus, Reithrodontomys megalotis, Microtus ochrogaster, and Peromyscus maniculatus. The field was divided into patches that varied in area by two orders of magnitude with patches of each size treatment placed in each section of the field. Patch size effects on densities and persistence rates of the four mammal species were tested with analyses of variance. Plant species were grouped according to seven life history traits so as to include relative percent cover of most plant species. Multiple linear regression analyses were used to identify which variables (patch size, field sections, and percent relative cover) significantly explained variations in small mammal densities.Effects of patch size on animal densities and persistence rates varied among animal species. The largest species, Sigmodon hispidus, was never found on the smallest patches, but densities of Reithrodontomys megalotis, Microtus ochrogaster, and Peromyscus maniculatus were often highest on the smallest patches. Animal density variations were often significantly explained by patch size using multiple regression analyses (P ? .001). However, lack of consistent trends with respect to the other independent variables included in the equations and variable R2 values suggested that other, unmeasured, variables may have influenced the results. Persistence rates of the three species were often highest on the largest patches. Results suggested that animals visited small patches more often than large patches without staying, and used large patches to create territori...

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“…The compression hypothesis has not been tested explicitly with mammals. Nevertheless, in several examples where one species has invaded or been introduced to the range of another, one or both have contracted the range of habitats they use (Crowell & Pimm 1976;Mehlhop & Lynch 1978;Taylor 1978;Terman 1978).…”

Section: Discussionmentioning

confidence: 99%

Niche compression: Two tests of an hypothesis using narrowly sympatric predator species

Dickman

1986

Australian Journal of Ecology

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The compression hypothesis predicts that when two species occur together in narrow sympatry, individuals in the overlap zone will use a smaller range of habitats and a larger or unchanged rangeof prey than individuals in allopdtry. This report attempts to validate the assumptions underlying this hypothesis, and describes two tests of the predicted resource shifts using narrowly sympatric species of predatory marsupials (Antechinus spp.). In the first test, using A. stuartii and A. flavipes, there was little correspondence between observed and predicted changes in diet and habitat use (as measured by indices of niche breadth) for populations of either species. One index of niche breadth (Levins' BJ revealed no trends in resource use, but a proportional similarity index relating resource use to resource abundance consistently indicated that the niche breadths of each species were greater in allopatry than in narrow sympatry. In the second test, using A. stuartii where it occurred alone and in narrow sympatry with A. swainsonii, there was again little correspondence between observed and predicted changes in resource use for seasonal or overall data. Differences in magnitudes of niche breadths between allopatric and narrowly sympatric A. stuartii were smaller in this test than in the first.While these findings provided no support for the compression hypothesis, they suggested three situations in which the predictions ofthe hypothesis may generally not apply. These are:

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Population Dynamics of Microtus and Sigmodon in Central Kansas

Cited by 10 publications

References 0 publications

The Interaction of Habitat Fragmentation, Plant, and Small Mammal Succession in an Old Field

The Interaction of Habitat Fragmentation, Plant, and Small Mammal Succession in an Old Field

The Effects of a Successional Habitat Mosaic On a Small Mammal Community

Niche compression: Two tests of an hypothesis using narrowly sympatric predator species

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