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Maternal Care Of Neonates In The Prairie Skink, Eumeces Septentrionalis, Louis A. Somma
Maternal Care Of Neonates In The Prairie Skink, Eumeces Septentrionalis, Louis A. Somma
Great Basin Naturalist
Maternal care of neonates has been documented in relatively few species of lizards representing four families. This study documents the occurrence of maternal care of neonates in the prairie skink, Eumeces septentrionalis. Observations made herein indicate that individual variation in maternal behavior existis in this species.
Annotated Inventory Of Invertebrate Populations Of An Alpine Lake And Stream Chain In Colorado, John H. Bushnell, Susan Q. Foster, Bruce M. Wahle
Annotated Inventory Of Invertebrate Populations Of An Alpine Lake And Stream Chain In Colorado, John H. Bushnell, Susan Q. Foster, Bruce M. Wahle
Great Basin Naturalist
Benthic macroinvertebrates were collected during the ice-free season (1 July–20 October) over a five-year period from a chain of alpine lakes and intervening streams in the Green Lakes Valley (3,347–3,615 m) in Boulder County, Colorado. A list of taxa was developed for 1981 and 1982, with taxonomic additions for 1983–1985 and comments on community structure, seasonal and elevational changes in species abundance, and noteworthy occurrences. A total of 111 taxa was collected, of which 84% occurred in streams, 58% being exclusively lotic. Dipterans composed 73–81% of total abundance in streams. The littoral benthic zone of lakes was predominantly trichopterans and …
Ecological Comparison Of Sympatric Populations Of Sand Lizards (Cophosaurus Texanus And Callisaurus Draconoides), Donald D. Smith, Philip A. Medica, Sherburn R. Sanborn
Ecological Comparison Of Sympatric Populations Of Sand Lizards (Cophosaurus Texanus And Callisaurus Draconoides), Donald D. Smith, Philip A. Medica, Sherburn R. Sanborn
Great Basin Naturalist
Sympatric populations of Cophosaurus texanus and Callisaurus draconoides were periodically sampled from March 1973 through April 1974 at Burro Creek, Mohave County, Arizona. Callisaurus were also sampled at Rock Valley, Nye County, Nevada. Sex ratios were skewed in favor of males in the adult Cophosaurus but were equal in both adult populations of Callisaurus. Both species became sexually mature as yearlings. Mean clutch sizes were 3.55 (±0.83) for Cophosaurus, and 4.25 (±1.08) and 5.07 (±1.33) for Callisaurus at Burro Creek and Rock Valley respectively. Evidence of multiple clutches was exhibited by both species. Egg weight/body weight ratios for both species …
Burrows Of The Sagebrush Vole (Lemmiscus Curtatus) In Southeastern Idaho, Tim R. Mullican, Barry L. Keller
Burrows Of The Sagebrush Vole (Lemmiscus Curtatus) In Southeastern Idaho, Tim R. Mullican, Barry L. Keller
Great Basin Naturalist
Burrows of the sagebrush vole (Lemmiscus curtatus) were analyzed by injecting them with expanding polyurethane foam. Average mean depth ± 1 SE of four burrows was 12.5 ± 2.6 cm. Tunnels were wider than high and flat on the bottom. Three of four burrows were nearly linear, with an average of five entrances. Burrows usually contained one nest made of Artemisia tridentata bark. No middens or communal nests were found. The burrow structure in sagebrush habitat suggests that sagebrush voles occur singly or in pairs rather than in colonies.
Habitat And Community Relationships Of Cliffrose (Cowania Mexicana Var. Stansburiana) In Central Utah, K. P. Price, J. D. Brotherson
Habitat And Community Relationships Of Cliffrose (Cowania Mexicana Var. Stansburiana) In Central Utah, K. P. Price, J. D. Brotherson
Great Basin Naturalist
Cliffrose (Cowania mexicana var. stansburiana [Torr.] Jepson) community measurements were taken in central Utah. Data revealed a high between-site similarity of 78.5%. Soil analysis for sites showed most macronutrients, and some micronutrients, relatively low. Cover of cliffrose was found to increase with increases in soil magnesium (p ≤ 0.01). Plants growing on the sites have adapted life cycles to exploit moisture and nutrients during seasons of maximum availability. Prevalent species in the community were cheatgrass (Bromus tectorum), cliffrose, madwort (Alyssum alyssoides), and bluebunch wheatgrass (Agropyron spicatum). Annual grasses were the most important life …