Eimeria fitzgeraldi n. sp. FROM THE NORTHERN POCKET GOPHER, Thomomys talpoides

1970 ◽  
Vol 6 (2) ◽  
pp. 107-108 ◽  
Author(s):  
K. S. TODD ◽  
C. A. TRYON
Keyword(s):  
Pocket Gopher ◽  
Thomomys Talpoides

Scales of heterogeneity in prairie and forest

1999 ◽  
Vol 77 (3) ◽  
pp. 370-376 ◽  
Author(s):  
Heather R Kleb ◽  
Scott D Wilson
Keyword(s):  
Species Composition ◽  
Small Scale ◽  
Light Penetration ◽  
Pocket Gopher ◽  
Available N ◽  
Litter Mass ◽  
Thomomys Talpoides ◽  
Mixed Grass ◽  
Below Ground ◽  
Aspen Forest

Few studies have compared scales of heterogeneity among plant communities. We predicted that differences in the sizes of dominant species should allow us to detect small-scale (<256 cm) heterogeneity in mixed-grass prairie but not in adjacent aspen forest. We examined light penetration, soil moisture, available N, elevation, species composition, and plant mass at 10 locations in prairie and forest in both spring and summer. Variables were measured in 1-cm2 plots arranged in pairs separated by 0-256 cm. Several variables in prairie (elevation, litter mass, light penetration, and species composition) showed significant evidence for scale within the range examined. In contrast, only one variable in forest (light penetration in summer) showed evidence for scale in the same range. The scale of heterogeneity in prairie was consistent with the scale of two possible causes, species composition and elevation variability due to northern pocket gopher (Thomomys talpoides Richardson) activity, both of which varied significantly in prairie but not in forest. Whereas some aboveground factors (light and litter mass) varied within the range examined, belowground factors (water and N) did not, suggesting that the scale of heterogeneity differs between above- and below-ground factors. In total, the results suggest that differences in the scale of heterogeneity between prairie and forest reflect the relative sizes of the dominant plants.Key words: aspen, forest, heterogeneity, light, nitrogen, prairie, scale, soil, water.

scholarly journals Characteristics of Pocket Gopher Populations in Relation to Selected Environmental Factors in Pelican Valley, Yellowstone National Park

1979 ◽  
Vol 3 ◽  
pp. 133-137
Author(s):  
C. Youmans ◽  
R. Moore
Keyword(s):  
Environmental Factors ◽  
Yellowstone National Park ◽  
National Park ◽  
Ursus Arctos ◽  
Water Levels ◽  
Specific Information ◽  
Pocket Gopher ◽  
Pocket Gophers ◽  
Thomomys Talpoides ◽  
Ursus Arctos Horribilis

Several important environmental factors which affect the dynamics of pocket gopher populations have been identified: water content at peak snowpack and depth of snow in spring (Hansen and Ward, 1966; Reid, 1973); weather and Its influence on annual food supplies and cover (Howard and Childs, 1959); production of annual and perennial forbs (Keith et al., 1959; Tietjen et al., 1967); and ground water levels and snow depths (Ingles, 1949; Hansen, 1962). A need for specific information on pocket gophers in Pelican Valley, Yellowstone National Park arose from interest in interactions between grizzly bears (Ursus arctos horribilis) and northern pocket gophers (Thomomys talpoides). Mealey (1975) and Graham (1978) suggested that pocket gophers and their caches may serve as seasonally important food items for grizzlies in Yellowstone National Park.

On the Characters of the Pocket Gopher Thomomys talpoides couchi Goldman

The Murrelet ◽  
1939 ◽  
Vol 20 (2) ◽  
pp. 38
Author(s):  
E. Raymond Hall ◽  
Walter W. Dalquest
Keyword(s):  
Pocket Gopher ◽  
Thomomys Talpoides

Reinvasion dynamics of northern pocket gopher (Thomomys talpoides) populations in removal areas

2001 ◽  
Vol 20 (3) ◽  
pp. 189-198 ◽  
Author(s):  
Thomas P. Sullivan ◽  
Druscilla S. Sullivan ◽  
Eugene J. Hogue
Keyword(s):  
Pocket Gopher ◽  
Thomomys Talpoides

Nutritional ecology of a fossorial herbivore: protein N and energy value of winter caches made by the northern pocket gopher, Thomomys talpoides

1985 ◽  
Vol 63 (5) ◽  
pp. 1101-1105 ◽  
Author(s):  
Miki M. Stuebe ◽  
Douglas C. Andersen
Keyword(s):  
Stomach Contents ◽  
Nutritional Ecology ◽  
Negative Energy ◽  
Soil Conditions ◽  
Pocket Gopher ◽  
Pocket Gophers ◽  
Plant Parts ◽  
Thomomys Talpoides ◽  
Balance Analysis ◽  
Adverse Environmental Conditions

Northern pocket gophers (Thomomys talpoides) are fossorial herbivores that excavate belowground plant parts for food. In subalpine areas during autumn and winter, pocket gophers hoard plant parts in caches placed in or under snow. We examined the size and composition of 17 nival caches and tested the hypotheses that (i) cached food can provide complete energy and protein N sustenance during typical periods when burrowing is precluded by soil conditions, and (ii) cached food is a random sample of items encountered by burrowing gophers during tunnel excavation. Our data indicate that caches provide substantially more energy than protein in terms of a pocket gopher's daily maintenance requirements. Nevertheless, quantities stored are sufficient to allow individuals to endure commonly encountered adverse environmental conditions without entering negative energy or protein balance. Analysis of stomach contents and a comparison of cache composition to availability of plant species suggests that gophers consume high-protein items as they are encountered, and store low-protein items in caches.

The Bonneville Estates Rockshelter rodent fauna and changes in Late Pleistocene–Middle Holocene climates and biogeography in the Northern Bonneville Basin, USA

2012 ◽  
Vol 78 (1) ◽  
pp. 95-102 ◽  
Author(s):  
Dave N. Schmitt ◽  
Karen D. Lupo
Keyword(s):  
Late Pleistocene ◽  
Salt Lake ◽  
Taxonomic Diversity ◽  
Early Holocene ◽  
Pocket Gopher ◽  
Middle Holocene ◽  
Thomomys Talpoides ◽  
Neotoma Cinerea ◽  
Bonneville Basin ◽  
Desert Woodrats

AbstractExcavations at Bonneville Estates Rockshelter, Nevada recovered rodent remains from stratified deposits spanning the past ca. 12,500 14C yr BP (14,800 cal yr BP). Specimens from horizons dating to the late Pleistocene and early Holocene include species adapted to montane and moist and cool habitats, including yellow-bellied marmot (Marmota flaviventris) and bushy-tailed woodrat (Neotoma cinerea). Shortly after 9000 14C BP (10,200 cal yr BP) these mammals became locally extinct, or nearly so, taxonomic diversity declined, and the region became dominated by desert woodrats (Neotoma lepida) and other species well-adapted to xeric, low-elevation settings. The timing and nature of changes in the Bonneville Estates rodent fauna are similar to records reported from nearby Homestead and Camels Back caves and provide corroborative data on terminal Pleistocene–early Holocene environments and mammalian responses to middle Holocene desertification. Moreover, the presence of northern pocket gopher (Thomomys talpoides) at Bonneville Estates adds to a sparse regional record for that species and similar to Homestead Cave, it appears that the ca. 9500 14C yr BP (10,800 cal yr BP) replacement of the northern pocket gopher by Botta's pocket gopher in the Great Salt Lake Desert vicinity was also in response to climate change.

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