Biology of the Eastern Chipmunk, Tamias striatus: Life Tables, Age Distributions, and Trends in Population Numbers

Tryon, Clarence Archer; Snyder, Dana P.

doi:10.2307/1378877

Cited by 47 publications

(25 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Data from ground squirrels first marked as juveniles and yearlings obviously yield more accurate estimates of age-specific survival and population structure than does information from adults of unknown age when first captured (Tryon and Snyder 1973). Numbers in each cohort and each cohort's subsequent disappearance could then be traced down the descending diagonals of the matrix.…”

Section: Life Tablesmentioning

confidence: 99%

“…Complete female life tables are currently available for four species: eastern gray squirrels (Sciurus carolinensis; Barkalow et al 1970, Thompson 1978, yellow-bellied marmots (Marmota flaviventris; Armitage and Downhower 1974), Uinta ground squirrels (Spermophilus armatus; Slade and Balph 1974), and golden-mantled ground squirrels (S. latera/is; Bronson 1979). Furthermore, data on age-specific survivorship have been gathered for a wide array of sciurids, including red squirrels (Tamiasciurus hudsonicus; Rusch and Reeder 1978), eastern chipmunks (Tamias striatus; Tryon and Snyder 1973), Olympic marmots (Marmota olympus; Barash 1973), Columbian ground squirrels (S. columbianus; Boag and Murie 1981), Richardson's ground squirrels (S. richardsonii; Michener andMichener 1977, Schmutz et al 1979), thirteen-lined ground squirrels (S. tridecem-/ineatus;McCarley 1966), and Franklin's ground squirrels (S. franklinii; Murie 1973). Unfortunately, agespecific fecundity apparently has not been determined for these species.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Demography of Belding's Ground Squirrels

Sherman¹,

Morton²

1984

Ecology

216

107

View full text Add to dashboard Cite

For 11 consecutive field seasons (1969)(1970)(1971)(1972)(1973)(1974)(1975)(1976)(1977)(1978)(1979) we studied the demography of a freeliving population of Belding's ground squirrels (Spermophi/us belding!) at Tioga Pass, in the central S~el!a Nevada of California. Our _researc~ i~volved repeatedly capturing and directly observing individually marked, known-age ammals w1thm and between years. Here we present information on age-specific survival and dispersal rates for both sexes and age-specific fecundity and reproductive value for fe~ales. Our data _indic~te that: (I) The 7-8 mo hibernation period (October-May) is a hazardous t~me; 66-70% of JUvemles and 36-39% of adults disappear during the winter. (2) Males apparently hve about half as long as females; males that survive their first winter typically remain in t~e population an additional_ 1.1 yr vs. 1.6 yr for females; while few males live >6 yr, some females hve > 11 yr. (3) The sex ratio of the adult population is female-biased, especially in the older age-cl_asses. (4) Thr?ughout the active season (summer), males disappear more rapidly than females; this disappearance IS due both to dispersal and to mortality. (5) During intrasexual combat for mates males injure each other severely; such injuries lead directly and indirectly to male mortality. (6) Litte; size and reproductive value change with female age; they are lowest for young (0-1 yr) and old (5-9 yr) females and highest for 2-4 yr olds. (7) The net reproductive rate (R0) for 1969-1975 was 1.36 daughters per dam, while the mean generation length ('!) was 2.26 yr. Sexual asymmetries in the demographic characteristics of S. beldingi appear to result from the animals' polygynous breeding system.

show abstract

Section: Life Tablesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Demography of Belding's Ground Squirrels

Sherman¹,

Morton²

1984

Ecology

216

107

View full text Add to dashboard Cite

show abstract

“…In SEARCH, predation risk was modeled using a habitat-specific, empirically derived index of predation pressure where motion sensor cameras observed relative predation intensity of taxidermied chipmunks at different times in varying habitats (Zollner unpublished data). This was combined with published annual mortality values of chipmunks [88] to estimate simulation predation rates. Data used to calculate predation probabilities were combined, segregated spatially or segregated spatially and temporally to create predation maps that were aspatial, spatially heterogeneous or spatially and temporally heterogeneous, respectively.…”

Section: Methodsmentioning

confidence: 99%

SEARCH: Spatially Explicit Animal Response to Composition of Habitat

et al. 2013

View full text Add to dashboard Cite

Complex decisions dramatically affect animal dispersal and space use. Dispersing individuals respond to a combination of fine-scale environmental stimuli and internal attributes. Individual-based modeling offers a valuable approach for the investigation of such interactions because it combines the heterogeneity of animal behaviors with spatial detail. Most individual-based models (IBMs), however, vastly oversimplify animal behavior and such behavioral minimalism diminishes the value of these models. We present program SEARCH (Spatially Explicit Animal Response to Composition of Habitat), a spatially explicit, individual-based, population model of animal dispersal through realistic landscapes. SEARCH uses values in Geographic Information System (GIS) maps to apply rules that animals follow during dispersal, thus allowing virtual animals to respond to fine-scale features of the landscape and maintain a detailed memory of areas sensed during movement. SEARCH also incorporates temporally dynamic landscapes so that the environment to which virtual animals respond can change during the course of a simulation. Animals in SEARCH are behaviorally dynamic and able to respond to stimuli based upon their individual experiences. Therefore, SEARCH is able to model behavioral traits of dispersing animals at fine scales and with many dynamic aspects. Such added complexity allows investigation of unique ecological questions. To illustrate SEARCH's capabilities, we simulated case studies using three mammals. We examined the impact of seasonally variable food resources on the weight distribution of dispersing raccoons (Procyon lotor), the effect of temporally dynamic mortality pressure in combination with various levels of behavioral responsiveness in eastern chipmunks (Tamias striatus), and the impact of behavioral plasticity and home range selection on disperser mortality and weight change in virtual American martens (Martes americana). These simulations highlight the relevance of SEARCH for a variety of applications and illustrate benefits it can provide for conservation planning.

show abstract

“…Male reproductive condition was determined by scrotal size and position. We classified all chipmunks as juvenile, subadult, or adult based on weight, external measurements, and sexual characteristics (Forbes 1966, Tryon andSnyder 1973).…”

Section: Capture and Radiotelemetrymentioning

confidence: 99%

Response of eastern chipmunks to single application spring prescribed fires on the Fernow Experimental Forest

Rowan¹,

Ford²,

Castleberry³

et al. 2005

View full text Add to dashboard Cite

We used radiotelemetry to examine the effects of spring prescribed fire for preharvest oak (Quercus spp.) shelterwood management on eastern chipmunk (Tamias striatus) home-range attributes and burrow use on the Fernow Experimental Forest in the central Appalachian Mountains of West Virginia. Results for 21 chipmunks showed that prescribed fire had little discernable effect on home-range or core-area size, extent of conspecific overlap, or burrow use. Fire tolerance of this common forest rodent provides additional evidence supporting the use of prescribed burning to achieve vegetation management objectives in the central Appalachians where appropriate.

show abstract

Biology of the Eastern Chipmunk, Tamias striatus: Life Tables, Age Distributions, and Trends in Population Numbers

Cited by 47 publications

References 19 publications

Demography of Belding's Ground Squirrels

Demography of Belding's Ground Squirrels

SEARCH: Spatially Explicit Animal Response to Composition of Habitat

Response of eastern chipmunks to single application spring prescribed fires on the Fernow Experimental Forest

Contact Info

Product

Resources

About