Gap-Crossing Decisions by the Red Squirrel, a Forest-Dependent Small Mammal

2004 ◽  
Vol 18 (3) ◽  
pp. 689-697 ◽  
Author(s):  
VICTORIA J. BAKKER ◽  
DIRK H. VAN VUREN
Keyword(s):  
Small Mammal ◽  
Red Squirrel ◽  
Gap Crossing

Test of the prey-base hypothesis to explain use of red squirrel midden sites by American martens

2001 ◽  
Vol 79 (8) ◽  
pp. 1372-1379 ◽  
Author(s):  
Dean E Pearson ◽  
Leonard F Ruggiero
Keyword(s):  
Species Richness ◽  
Small Mammals ◽  
Small Mammal ◽  
Regression Models ◽  
Red Squirrel ◽  
Linear Regression Models ◽  
Mammal Species ◽  
Landscape Variables ◽  
Selection Of ◽  
American Martens

We tested the prey-base hypothesis to determine whether selection of red squirrel (Tamiasciurus hudsonicus) midden sites (cone caches) by American martens (Martes americana) for resting and denning could be attributed to greater abundance of small-mammal prey. Five years of livetrapping at 180 sampling stations in 2 drainages showed that small mammals, particularly red-backed voles (Clethrionomys gapperi) and shrews (Sorex spp.), were more abundant at midden sites than at non-midden sites. However, logistic regression indicated that middens occurred in spruce–fir (Picea engelmannii – Abies lasiocarpa) stands, being correlated with decreasing lodgepole pine (Pinus contorta) basal area, decreasing distance to water, and increasing canopy cover. Since middens were not randomly distributed, we constructed multiple linear regression models to determine the variability in small-mammal abundance and species richness attributable to structural and landscape variables. Regression models indicated that abundance of small mammals, red-backed voles, and uncommon small mammals could be predicted from structural and landscape variables, but midden presence did not significantly improve these models. Midden presence was a significant but weak predictor of small-mammal species richness. Our data do not support the prey-base hypothesis for explaining martens' selection of resting and denning sites near red squirrel middens at the scales we tested.

Small mammal and habitat response to shoreline cottage development in central Ontario

1982 ◽  
Vol 60 (5) ◽  
pp. 865-880 ◽  
Author(s):  
G. D. Racey ◽  
D. L. Euler
Keyword(s):  
Small Mammal ◽  
Deer Mouse ◽  
Tamiasciurus Hudsonicus ◽  
Red Squirrel ◽  
Blarina Brevicauda ◽  
Tamias Striatus ◽  
Composition And Structure ◽  
Sorex Cinereus ◽  
Cottage Development ◽  
Mammal Diversity

Changes in small mammal abundance and habitat caused by shoreline cottage development in central Ontario were studied in the summers of 1978 and 1979. This development significantly altered the vegetation composition and structure in the vicinity of cottages. These alterations, in turn, had an impact on small mammal abundance. These animals were classified in three response categories: tolerant (existing, at some level, regardless of degree of development), intolerant (extirpated at high levels of development), and indifferent to development. Tolerant species were the eastern chipmunk (Tamias striatus), short-tailed shrew (Blarina brevicauda), and deer mouse (Peromyscus maniculatus); intolerant species were the masked shrew (Sorex cinereus), red-backed vole (Clethrionomys gapperi), and woodland jumping mouse (Napeozapus insignis). The red squirrel (Tamiasciurus hudsonicus) was indifferent to development. Small mammal diversity was highest on mixed shorelines at moderate levels of development. Species diversity appeared to respond positively to vegetative composition, edge effect, and irregularity of habitat. These characteristics were all dependent on the level of cottage development.

The contribution of raptorial birds to patterning in small mammal assemblages

Paleobiology ◽  
1988 ◽  
Vol 14 (1) ◽  
pp. 81-90 ◽  
Author(s):  
Rob Hoffman
Keyword(s):  
Small Mammal ◽  
Mus Musculus ◽  
House Mice ◽  
Potential Contribution ◽  
Quantitative Analyses ◽  
Interspecies Variability ◽  
Fossil Assemblages ◽  
Mammal Assemblages

Seven taxa of raptorial birds were experimentally fed a controlled sample of 50 house mice (Mus musculus). Bones recovered from the pellets were examined for interspecies variability in preservation to assess the potential contribution of specific raptors to patterning in fossil assemblages. Quantitative analyses demonstrate that patterns in bone fragmentation may assist in the identification of particular raptor species as depositional agents in small mammal assemblages.

Understory use by terrestrial small mammals in an unflooded forest patch in the Pantanal floodplain

Mammalia ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Nayara Yoshie Sano ◽  
Heitor Miraglia Herrera ◽  
Grasiela Edith de Oliveira Porfirio ◽  
Filipe Martins Santos
Keyword(s):  
Small Mammals ◽  
Small Mammal ◽  
Understory Vegetation ◽  
Monodelphis Domestica ◽  
Forest Patch ◽  
Habitat Features ◽  
Species Characteristics ◽  
Local Habitat

AbstractTo date, there have been no studies that have evaluated small mammal utilization of the understory of forests. In this study, we described the use of vertical strata by small mammals in patches of unflooded forests, known as “cordilheiras”, in the Nhecolândia sub-region of the Pantanal, Brazil. We collected all species using the ground and understory, including the terrestrial didelphid Monodelphis domestica. We suppose that local habitat features (e.g., Acuri palms), rather than intrinsic species characteristics, may be more conducive to the use of understory vegetation by small mammals in the Nhecolândia region.

scholarly journals Functional traits shape small mammal-helminth network: patterns and processes in species interactions

Parasitology ◽  
2021 ◽  
pp. 1-36
Author(s):  
Thiago dos Santos Cardoso ◽  
Cecilia Siliansky de Andreazzi ◽  
Arnaldo Maldonado Junior ◽  
Rosana Gentile
Keyword(s):  
Functional Traits ◽  
Small Mammal ◽  
Species Interactions ◽  
Patterns And Processes ◽  
Network Patterns
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