Ecological Distribution of Six Species of Shrews and Comparison of Sampling Methods in the Central Rocky Mountains

Brown, Larry N.

doi:10.2307/1377585

Cited by 38 publications

(22 citation statements)

References 16 publications

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“…The increased activity on days with daily minimum temperatures above 22 C at Karen's Pond is indicative of the many juveniles actively dispersing during the summer. (Gibbons, 1970;Hartweg, 1944;Tinkle, 1967) and mammals (Brown, 1967;Sealander and James, 1958). In the present study, the technique presumably provided an indication of relative abundance, species diversity and activity of frogs inhabiting the area surrounding two ponds, although biases undoubtedly resulted from use of the drift fence method.…”

Section: Discussionmentioning

confidence: 99%

Determination of Anuran Terrestrial Activity Patterns by a Drift Fence Method

Gibbons¹,

Bennett²

1974

Copeia

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Section: Discussionmentioning

confidence: 99%

Determination of Anuran Terrestrial Activity Patterns by a Drift Fence Method

Gibbons¹,

Bennett²

1974

Copeia

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“…This reaction can be occassionally modified as evidenced by the rapid rate of capture of B. brevicauda on the first standard minimum grid run in South Carolina (Gentry, Golley & Smith, 1968). However, it is likely that shrews in general show a marked avoidance of strange objects in a variety of habitats (Brown, 1967;Gentry, Smith & Chelton, 1971). If the trap response of a species were determined by the neophilic and neophobic reactions, then the initial trap response might be quite different than subsequent responses.…”

Section: Discussionmentioning

confidence: 99%

Distances moved by small mammals as an apparent function of grid size

Faust¹,

Smith²,

Wray³

1971

Acta Theriol.

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Live traps were used on a 26X26 grid (14.1 ha) to determine the movement patterns of three species of small mammals in a lowland mesic-hardwood forest. Blarina brevicauda moved an average of 94.7 m between succesive captures, Ochrotomys nuttalli 72.8 m and Peromyscus gossypinus 54.9 m. These data are not consistent with Calhoun's theory of social dominance. Linear relationships are given for predicting home range size as calculated by several different methods from average distance between captures. A new way of depicting the distribution of distances between captures is given. Movements on the middle 16X16 grid compared to those on the 26X26 grid were 19.4«/ 0 shorter for O. nuttalli and 25.1% shorter for P. gossypinus. Longer movements are extending the area of effect around a census grid or line farther than might be expected from data collected on smaller study plots. Thus, an upward bias is introduced into most density estimates.

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“…Throughout the distribution of the Soricidae, wet habitats are the most productive in terms of biomasses and densities of prey and they are inhabited by the highest densities and numbers of coexisting shrew species (Spencer and Pettus 1966, Brown 1967, Wrigley et al 1979, Schrôpfer 1990, Kirkland 1991, Shvarts and Demin 1994, Churchfield et al 1997). Therefore, it is possible that my study area included habitats which offered very rich resources and the shrews coexisted under weak competitive interactions.…”

Section: Interspecific Similaritiesmentioning

confidence: 99%

“…Shrews often display high levels of interspecific overlap of habitat niches (Spencer and Pettus 1966, Brown 1967, Wrigley et al 1979, Churchfield et al 1997, Castien and Gosalbez 1999. However, certain segregation of habitat niches is usually observed.…”

Section: Introductionmentioning

confidence: 99%

“…However, certain segregation of habitat niches is usually observed. It relied on selection of places differing with regard to the following microhabitat factors: density and type of plant cover, distance to water, soil wetness or water level, soil type or richness, litter layer, and quantity of woody debris (Spencer and Pettus 1966, Brown 1967, Hawes 1977, Wrigley et al 1979, Terry 1981, Neet and Hausser 1990, Sheftel 1994, Shvarts and Demin 1994, Dickman 1995, Lee 1995, Castien and Gosalbez 1999. In some cases separation of habitat optima or mutual habitat exclusion has been observed (Hawes 1977, Neet and Hausser 1990, Sheftel 1994.…”

Section: Introductionmentioning

confidence: 99%

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Habitat preferences of four sympatric species of shrews

Rychlik¹

2000

Acta Theriol.

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Habitat preferences were studied in a shrew community of two semiaquatic species, Neomys anomalus Cabrera, 1907 and N. fodiens (Pennant, 1771), and two terrestrial species, Sorex araneus Linnaeus, 1758 and S. minutus Linnaeus, 1766, in a study area (5600 m ) alongside a small stream in Białowieża Forest (E Poland). Preferences were estimated by relating frequency of captures with macro-and microhabitat characteristics of trapping points. Distance to the stream and ground wetness appeared to be more important than macrohabitat and plant cover in separation of habitat niches. N. fodiens was trapped at places significantly wetter and closer to the stream than the three other species, N. anomalus was captured at places wetter and closer to the stream than S. araneus and S. minutus was trapped closer to the stream than S. araneus. Habitat preferences of these species reflected vertical segregation in their foraging. The interspecific overlaps in habitat preferences were lowest between N. fodiens and the two Sorex species and highest between N. anomalus and S. araneus and between the two Sorex species. An inverse relationship between the breadths of the trophic and habitat niches of the shrews appeared: the greatest trophic specialist S. minutus had the broadest habitat niche, whereas the greatest trophic generalist N. fodiens had the narrowest habitat niche. High interspecific overlaps in habitat preferences and little overlaps in spatial distribution suggest that the separation of ecological niches of these four species in the study site reflects other mechanisms in addition to habitat preferences.

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Ecological Distribution of Six Species of Shrews and Comparison of Sampling Methods in the Central Rocky Mountains

Cited by 38 publications

References 16 publications

Determination of Anuran Terrestrial Activity Patterns by a Drift Fence Method

Determination of Anuran Terrestrial Activity Patterns by a Drift Fence Method

Distances moved by small mammals as an apparent function of grid size

Habitat preferences of four sympatric species of shrews

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