Factors influencing perceived community structure in nearctic forest small mammals

• Autorzy: Kirkland G. L. , Sheppard P.K. , Shaughnessy M.J. , Woleslagle B.A.
• Języki publikacji: EN

Abstrakty

EN

Arrays of pitfalls and drift fences were deployed in five deciduous forest habitats in southcentral Pennsylvania to assess the characteristics, and temporal and spatial dynamics of forest small-mammal communities, and to determine the impact of precipi­tation, sampling method, and length of sampling period on perceived small-mammal abundance and community structure. Results revealed that soricid assemblages were more diverse and generally more abundant than rodent assemblages, which were dominated by the white-footed mouse Peromyscus leucopus. Precipitation dramatically increased the capture rates of shrews; the response was less pronounced in rodents. Individual species responded independently to precipitation. The response was more pronounced in three species of arvicoline rodents (Clethrionomys gapperi, Microtus pinetorum, and M. pennsylvanicus) than in P. leucopus, a sigmodontine. Comparisons of sampling with pitfalls and Museum Special snap-traps, with and without drift fencing, revealed that arrays of pitfalls with drift fences produced significantly higher capture rates for all small mammals, shrews, rodents, and P. leucopus, greater num­bers of species, and higher Shannon indices than other sampling methods, Comparison of the results of sampling for 3, 5, 7, and 10 days revealed that extending sampling to 7 or more days yielded significantly more species, higher Shannon indices, and greater numbers of individuals than sampling for less than 7 days.

Słowa kluczowe

EN

Blarina; mice; spatial dynamics; Pennsylvania; Peromyscus leucopus; precipitation; nearctic forest; rodent; small mammal; Microtus; temporal dynamics; sampling method; Sorex; mouse; Peromyscus; community ecology; white-footed mouse; forest

• Wydawca: -
• Czasopismo: Acta Theriologica
• Rocznik: 1998
• Tom: 43
• Numer: 2
• Opis fizyczny: p.121-135

Twórcy

autor

Kirkland G. L.

• Shippensburg University, Shippensburg, Pennsylvania 17257, USA

autor

Sheppard P.K.

autor

Shaughnessy M.J.

autor

Woleslagle B.A.

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