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38 results for “pocket gophers”
Figure 11 in Coleoptera (Histeridae, Leiodidae and Scarabaeidae) inhabiting the burrows of Baird's pocket gopher (Rodentia: Geomyidae: Geomys breviceps) in Arkansas
Figure 11. Collection locations for Cryptoscatomaseter haldemani. Note: Gray shading represents Geomys spp. distribution. Circles represent published pocket gopher records. Stars represent new Arkansas records.
Data from: De novo reference genome of a Geomyid rodent, Botta’s pocket gopher (Thomomys bottae)
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Pocket gopher mound litter decomposition data for Saddle and East of Tvan, 1993 - 1995.
This research was designed to examine the interaction of effects of gopher disturbance and aspect on litter decomposition on alpine tundra. Kobresia myosuroides foliage collected from Niwot Ridge was dried and placed into 10x20 cm litter bags. About 2 g of plant material were placed in the litter bags. One-hundred and sixty (160) litter bags were constructed of polyester mesh with a mesh size of 2mm^2. Forty (40) litter bags were placed inside of gopher mounds, at the interface between the mounded (gopher excavated) soil and the original soil surface (top of the O horizon), located on a slope with a southern aspect. An additional 40 litter bags were placed on the soil surface near these gopher mounds. The remaining 80 bags were similarly paired on gopher mounds and undisturbed soils on a slope with a northern aspect. All litter bags were placed in the field on 1 July 1993, and an initial harvest was done on the same date in order to assess the effect of handling and transport to the field. The second harvest was undertaken on 11 September 1993, at which time 31 bags were harvested. Retrieved litter bags were dried at 80 degrees Celsius for approximately 24 hr. The litter was removed from the litter bags and weighed. Litter weight loss was calculated to estimate decomposition rates. The remaining harvests are were in autumn 1993, spring 1994, and autumn 1994.
Shrub data: Effects of Deer and Pocket Gophers on Vegetation and Soils
The goal of this experiment is to determine the effects of pocket gophers and deer on succesesional changes and the development of heterogeneity in soils and vegetation in an old-field. This is a long-term experiment and will be sampled through the year 2000. Major herbivores are excluded from fifteen 12m x 12m plots in a newly abandoned old field. Main treatments include gopher removals, all large vertebrate removals, and controls. Smaller (3m x 12m) grasshopper removals are nested within main treatments. Gopher disturbance will be quantified throughout the summer season. Soils ( including N mineralization) and vegetation will be sampled regularly on 100-point grids within each plot. For a list of treatments, see the treatment layouts in file Link==>e064/treatment trmte64.
Plant tissue nitrogen: Effects of Deer and Pocket Gophers on Vegetation and Soils
The goal of this experiment is to determine the effects of pocket gophers and deer on succesesional changes and the development of heterogeneity in soils and vegetation in an old-field. This is a long-term experiment and will be sampled through the year 2000. Major herbivores are excluded from fifteen 12m x 12m plots in a newly abandoned old field. Main treatments include gopher removals, all large vertebrate removals, and controls. Smaller (3m x 12m) grasshopper removals are nested within main treatments. Gopher disturbance will be quantified throughout the summer season. Soils ( including N mineralization) and vegetation will be sampled regularly on 100-point grids within each plot. For a list of treatments, see the treatment layouts in file Link==>e064/treatment trmte64.
Soil nitrate and ammonium: Effects of Deer and Pocket Gophers on Vegetation and Soils
The goal of this experiment is to determine the effects of pocket gophers and deer on succesesional changes and the development of heterogeneity in soils and vegetation in an old-field. This is a long-term experiment and will be sampled through the year 2000. Major herbivores are excluded from fifteen 12m x 12m plots in a newly abandoned old field. Main treatments include gopher removals, all large vertebrate removals, and controls. Smaller (3m x 12m) grasshopper removals are nested within main treatments. Gopher disturbance will be quantified throughout the summer season. Soils ( including N mineralization) and vegetation will be sampled regularly on 100-point grids within each plot. For a list of treatments, see the treatment layouts in file Link==>e064/treatment trmte64.
Data from: Systematic revision of the pocket gopher genus Orthogeomys
Pocket gophers of the genus Orthogeomys show unusually high morphological and ecological diversity compared to other genera in the family Geomyidae. Whereas this diverse group once was divided into 3 genera (Merriam 1895), a revision by Russell (1968) recognized only Orthogeomys, with Merriam's original genera relegated to subgeneric status as Heterogeomys, Macrogeomys, and Orthogeomys. Recent studies have called into question the monophyly of Orthogeomys, as well as the validity of 4 currently recognized Orthogeomys species. To date, the taxonomic validity of only 1 of these species has been verified (Hafner et al. 2014). In this analysis, the first to include all 11 recognized species of the genus, we examine 3 mitochondrial and 2 nuclear gene sequences (4,352 base pairs) and analyze cranial morphology to explore relationships within the genus. Our data support a taxonomic revision that restricts the genus Orthogeomys to a single species (O. grandis) and combines the subgenera Heterogeomys and Macrogeomys into the resurrected genus, Heterogeomys (7 species). In addition, 3 currently recognized species of Orthogeomys are synonymized as follows: O. cuniculus with O. grandis; H. thaeleri with H. dariensis; and H. matagalpae with H. cherriei. A synonymy and a key to the species of the genera Orthogeomys and Heterogeomys are provided.
On following pages: 28. Big Pocket Gopher (Heterogeomys lanius); 29. Chiriqui Pocket Gopher (Heterogeomys cavaton; 30. Darien Pocket Gopher (Heterogeomys dariensis); 31. Cherrie's Pocket Gopher (Heterogeomys cherriel); 32. Variable Pocket Gopher (Heterogeomys heterodus); 33. Underwood's Pocket Gopher (Heterogeomys underwood); 34. Buller's Pocket Gopher (Pappogeomys bulleri); 35. Yellow-faced Pocket Gopher (Cratogeomys castanops); 36. Goldman's Pocket Gopher (Cratogeomys goldmani); 37. Oriental Basin Pocket Gopher (Cratogeomys fulvescens); 38. Merriam's Pocket Gopher (Cratogeomys merriami); 39. Cofre de Perote Pocket Gopher (Cratogeomys perotensis); 40. Volcan de Toluca Pocket Gopher (Cratogeomys planiceps); 41. Smoky Pocket Gopher (Cratogeomys fumosus). in Geomyidae
On following pages: 28. Big Pocket Gopher (Heterogeomys lanius); 29. Chiriqui Pocket Gopher (Heterogeomys cavaton; 30. Darien Pocket Gopher (Heterogeomys dariensis); 31. Cherrie's Pocket Gopher (Heterogeomys cherriel); 32. Variable Pocket Gopher (Heterogeomys heterodus); 33. Underwood's Pocket Gopher (Heterogeomys underwood); 34. Buller's Pocket Gopher (Pappogeomys bulleri); 35. Yellow-faced Pocket Gopher (Cratogeomys castanops); 36. Goldman's Pocket Gopher (Cratogeomys goldmani); 37. Oriental Basin Pocket Gopher (Cratogeomys fulvescens); 38. Merriam's Pocket Gopher (Cratogeomys merriami); 39. Cofre de Perote Pocket Gopher (Cratogeomys perotensis); 40. Volcan de Toluca Pocket Gopher (Cratogeomys planiceps); 41. Smoky Pocket Gopher (Cratogeomys fumosus).
On following pages: 3. Idaho Pocket Gopher (Thomomys idahoensis); 4. Wyoming Pocket Gopher (Thomomys clusius); 5. Northern Pocket Gopher (Thomomys talpoides); 6. Camas Pocket Gopher (Thomomys bulbivorus), 7. Townsend's Pocket Gopher (Thomomys townsend); 8. Southern Pocket Gopher (Thomomys umbrinus); 9. Sierra Madre Occidental Pocket Gopher (Thomomys sheldoni); 10. Black-and-Brown Pocket Gopher (Thomomys atrovarius), 11. Nayar Pocket Gopher (Thomomys nayarensis); 12. Botta's Pocket Gopher (Thomomys bottae); 13. Plains Pocket Gopher (Geomys bursarius); 14. Hall's Pocket Gopher (Geomys jugossicularis); 15. Sand Hills Pocket Gopher (Geomys lutescens); 16. Desert Pocket Gopher (Geomys arenarius); 17. Jones's Pocket Gopher (Geomys knoxjonesi); 18. Attwater''s Pocket Gopher (Geomys attwateri); 19. Texas Pocket Gopher (Geomys personatus); 20. Strecker's Pocket Gopher (Geomys streckeri); 21. Tropical Pocket Gopher (Geomys tropicalis); 22. Llano Pocket Gopher (Geomys texensis); 23. Baird's Pocket Gopher (Geomys breviceps); 24. South-eastern Pocket Gopher (Geomys pinetis). in Geomyidae
On following pages: 3. Idaho Pocket Gopher (Thomomys idahoensis); 4. Wyoming Pocket Gopher (Thomomys clusius); 5. Northern Pocket Gopher (Thomomys talpoides); 6. Camas Pocket Gopher (Thomomys bulbivorus), 7. Townsend's Pocket Gopher (Thomomys townsend); 8. Southern Pocket Gopher (Thomomys umbrinus); 9. Sierra Madre Occidental Pocket Gopher (Thomomys sheldoni); 10. Black-and-Brown Pocket Gopher (Thomomys atrovarius), 11. Nayar Pocket Gopher (Thomomys nayarensis); 12. Botta's Pocket Gopher (Thomomys bottae); 13. Plains Pocket Gopher (Geomys bursarius); 14. Hall's Pocket Gopher (Geomys jugossicularis); 15. Sand Hills Pocket Gopher (Geomys lutescens); 16. Desert Pocket Gopher (Geomys arenarius); 17. Jones's Pocket Gopher (Geomys knoxjonesi); 18. Attwater''s Pocket Gopher (Geomys attwateri); 19. Texas Pocket Gopher (Geomys personatus); 20. Strecker's Pocket Gopher (Geomys streckeri); 21. Tropical Pocket Gopher (Geomys tropicalis); 22. Llano Pocket Gopher (Geomys texensis); 23. Baird's Pocket Gopher (Geomys breviceps); 24. South-eastern Pocket Gopher (Geomys pinetis).
Figure 4 in Phylogenetic structure among pocket gopher populations, genus Thomomys (Rodentia: Geomyidae), on the Baja California Peninsula
Figure 4. Unrooted tree based on Bayesian and maximum-likelihood (ML) analyses of Baja California Peninsula (BCP) pocket gophers using the nuclear gene IRBP (396 bp). Letters indicate the locality of the sequence according to Table 1. Support values are Bayesian (posterior probability)/ML bootstrap values (percentage).
Figure 2. The 49 in Phylogenetic structure among pocket gopher populations, genus Thomomys (Rodentia: Geomyidae), on the Baja California Peninsula
Figure 2. The 49 geographic locations where the samples were sequenced (letter). See Table 1 for the name of the localities. The lines indicate the hypothesized vicariance events that affected the Baja California Peninsula (BCP) fauna.
Figure 6 in Phylogenetic structure among pocket gopher populations, genus Thomomys (Rodentia: Geomyidae), on the Baja California Peninsula
Figure 6. Proposed subspecies distribution of Thomomys nigricans based on phylogenetic relationships, demographic history, and divergence times.
Figure 1 in Phylogenetic structure among pocket gopher populations, genus Thomomys (Rodentia: Geomyidae), on the Baja California Peninsula
Figure 1. Currently recognized subspecies of Thomomys anitae on the Baja California Peninsula (BCP). Type localities of each subspecies are: (1) 1.6 km east of El Rosario; (2) W side of the Colorado River, at old Hanlon Ranch, near Pilot Knob, Imperial Co., California; (3) Sierra Laguna, 2134 m a.s.l., Lower California; (4) Santa Anita, Lower California; (5) San[to] Tomás Baja California; (6) San Borjas Mission; (7) San Fernando Mission; (8) Punta Prieta; (9) Cataviña; (10) Los Palmitos, (western end Pattie Basin), on southeastern basin of Sierra Juarez (desert slope); (11) 1.6 km east of Rancho Lagunitas; (12) La Paz, Southern Lower California; (13) San Jorge, near Pacific coast west of Poza Grande and about 40.2 km south-west of Comondú, southern Lower California (altitude 15.2 m a.s.l.); (14) Sangre de Cristo; (15) Laguna Hanson, Sierra de Juárez; (16) Stearns Point, Magdalena Bay (west side), Lower California; (17) Las Palmas Canyon, 61 m a.s.l., western side of Laguna Salada; (18) Magdalena Island, Lower California; (19) San Pedro Martir mountains, Lower California, 213–2499.3 m a.s.l.; (20) Witch Creek, 11.2 km west of Julian, San Diego Co., 839.1 m a.s.l., California; (21) Boca La Playa, mesa bordering the sea, 25.7 km west of Santo Tomás; (22) Las Flores, 11.2 km south Bahía de Los Angeles; (23) 6.4 km north of Santa Catarina; (24) San Angel, 48.2 km west of San Ignacio, Lower California; (25) El Cajón, Canyon, 975.3 eastern base of Sierra San Pedro Martir, Baja California; (26) Balboa Park, San Diego California; (27) Near Diablito Spring, summit of San Matías Pass between Sierra Juarez and Sierra San Pedro Mártir, Baja California.
Figure 5 in Phylogenetic structure among pocket gopher populations, genus Thomomys (Rodentia: Geomyidae), on the Baja California Peninsula
Figure 5. Population expansion of Thomomys on the Baja California Peninsula (BCP). A, haplotype network of 119 haplotypes based on a fragment of cyt b (499 bp). The network shows three main clades that are also found by phylogenetic analyses. Each dot across the line between haplotypes represents a single base substitution. Dashed lines indicate the genetic break and the mutational steps between ancestral haplotypes. The numbers in the boxes indicate one of 119 unique haplotypes (Table 1); subscript numbers indicate the number of times the haplotype was sampled. B, mismatch distributions, based on the frequency of pairwise differences between all haplotypes. The grey line represents the expected Poisson distribution assuming a stepwise population expansion. The observed distribution is indicated by the black line.
Data from: Getting a head in hard soils: convergent skull evolution and divergent allometric patterns explain shape variation in a highly diverse genus of pocket gophers (Thomomys)
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Data from: Systematic revision of the pocket gopher genus Orthogeomys
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Fig. 3 in Systematics of the Smooth-Toothed Pocket Gopher, Thomomys umbrinus, in the Mexican Transvolcanic Belt
Fig. 3. Bidimensional distribution of subadult females in the principal components (PC) III and I. Thomomys umbrinus pullus (P) is separated from other examined populations along the Mexican Transvolcanic Belt by both its small size and cranial morphology. Letters indicate the centroids of each examined sample as mentioned on table 1. The analysis was made on the individuals.
Figure 12 in Coleoptera (Histeridae, Leiodidae and Scarabaeidae) inhabiting the burrows of Baird's pocket gopher (Rodentia: Geomyidae: Geomys breviceps) in Arkansas
Figure 12. Collection locations for Cryptoscatomaseter oklahomensis. Note: Gray shading represents Geomys spp. distribution. Circles represent published pocket gopher records. Stars represent new Arkansas records.
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