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Full-Text Articles in Biodiversity
Karyotypic Relationships Within The Short-Tailed Shrews, Genus Blarina, Sarah B. George, Hugh H. Genoways, Jerry R. Choate, Robert J. Baker
Karyotypic Relationships Within The Short-Tailed Shrews, Genus Blarina, Sarah B. George, Hugh H. Genoways, Jerry R. Choate, Robert J. Baker
University of Nebraska State Museum: Mammalogy Papers
Short-tailed shrews of the genus Blarina exhibit considerable geographic variation in both diploid number and fundamental number. Four chromosomal groups are recognized within the genus: Blarina brevicauda, FN = 48; 2N = 50, 49, or 48; B. carolinensis, FN = 45 or 44; 2N = 46, 39, 38, or 37; B. c. peninsulae, FN = 52; 2N = 52, 51, or 50; B. hylophaga, FN = 62, 61, or 60; 2N = 52. B. c. peninsulae also may be a distinct species, but exact determination must await location and analysis of a zone of contact with …
An Analysis Of Howling Response Parameters Useful For Wolf Pack Censusing, Fred H. Harrington, L. David Mech
An Analysis Of Howling Response Parameters Useful For Wolf Pack Censusing, Fred H. Harrington, L. David Mech
USGS Northern Prairie Wildlife Research Center
Gray wolves (Canis lupus) were studied from April 1972 through April 1974 in National Forest in northeastern Minnesota by radio-tracking and simulated howling. Based during 217 of 456 howling sessions, the following recommendations were derived for using howling as a census technique: (1) the best times of day are dusk and night; (2) July, August, and are the best months; (3) precipitation and winds greater than 12 km/hour should be avoided; (of 5 single howls should be used, alternating "flat" and "breaking" howls; (5) trials should 3 times at about 2-minute intervals with the first trial at lower …
Distributions, Densities, And Relative Abundances Of Grasshoppers (Orthoptera: Acrididae) In A Nebraska Sandhills Prairie, Anthony Joern
Distributions, Densities, And Relative Abundances Of Grasshoppers (Orthoptera: Acrididae) In A Nebraska Sandhills Prairie, Anthony Joern
Entomology Papers from Other Sources
Grasshoppers (Orthoptera: Acrididae) represent a conspicuous and often important component of grassland systems (Odum et al. 1962, Smalley 1960, Sinclair 1975, Van Hook 1971, Wiegert 1965). Often, assemblages of grasshoppers are quite diverse and may, on occasion, consume a large fraction of the available vegetation (Hewitt 1977, Hewitt et al. 1976, Mitchell and pfadt 1974). As such, grasshoppers have the potential of being very important in the nutrient and energy flow in grassland ecosystems. However, to understand the impact of grasshoppers at the ecosystem level requires that the densities and fluctuations of populations as well as the species composition of …
Preliminary Report Of Colony Survivorship In The Western Harvetser Ant (Pogonomyrmex Occidentalis) In Western Nebraska, Kathleen H. Keeler
Preliminary Report Of Colony Survivorship In The Western Harvetser Ant (Pogonomyrmex Occidentalis) In Western Nebraska, Kathleen H. Keeler
School of Biological Sciences: Faculty Publications
Colonies of Pogonomyrmex occidentalis Cresson (Hymenoptera: Formicidae) may live an average of 22 to 43 years. The population dynamics of individual colonies of P. occidentalis adjacent to the Univ. Nebraska's Cedar Point Biol. Sta., Keith Co., Nebraska, is the subject of an ongoing investigation. The habitat is a moderately grazed shortgrass prairie dominated by Bouteloua hirsuta, B. gracilis, and Buchloe dactyloides, with Stipa comata, Aristida spp., and various forbs. The colonies studied are in a triangular area about 400 m long and 100 m across at the widest point. The area appears to be at carrying …
Morphometric And Geographic Relationships Of Short-Tailed Shrews (Genus Blarina) In Kansas, Iowa, And Missouri, Nancy D. Moncrief, Jerry R. Choate, Hugh H. Genoways
Morphometric And Geographic Relationships Of Short-Tailed Shrews (Genus Blarina) In Kansas, Iowa, And Missouri, Nancy D. Moncrief, Jerry R. Choate, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Shrews of the genus Blarina from Iowa, Kansas, and Missouri were studied morphometrically and karyologically. The ranges of two species, B. brevicauda and B. hylophaga, overlap in a broad zone across southern Iowa and northern Missouri. Morphometric analyses revealed an unexpectedly large amount of cranial variation in B. brevicauda, and confirmed the presence of that species in the Kansas River Valley of northeastern Kansas. Considerable mensural overlap was found in geographic areas in which B. hylophaga and B. brevicauda are sympatric, evincing the need for further karyotypic and morphometric studies in those areas. No formal taxonomic changes are …
The Suriname Small Mammal Survey: A Case Study Of The Cooperation Between Research And National Conservation Needs, Hugh H. Genoways, Henry A. Reichart, Stephen L. Williams
The Suriname Small Mammal Survey: A Case Study Of The Cooperation Between Research And National Conservation Needs, Hugh H. Genoways, Henry A. Reichart, Stephen L. Williams
University of Nebraska State Museum: Mammalogy Papers
A cooperative program between the Foundation for Nature Preservation in Suriname and the Carnegie Museum of Natural History to survey the small mammals of Suriname is reviewed. The program has proven to be mutually beneficial and it is presented as a model for development of similar programs in the future. The technical assistance requested by the Foundation for Nature Preservation in Suriname concerned the distribution and natural history of small mammals, especially those occurring in the Nature Parks and Reserves. The Government of Suriname has established an excellent system of Reserves and Parks throughout the country. They are trying to …