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Articles 31 - 50 of 50
Full-Text Articles in Population Biology
Elephant Interest Group - Membership List, Elephant Editors
Elephant Interest Group - Membership List, Elephant Editors
Elephant
Mailing List for the Elephant Interest Group. This document contains sensitive personal information and is therefore not openly available on this site. Please contact the administrators for details.
Errata And Comments For Elephant Newsletter No. 2, Elephant Editors
Errata And Comments For Elephant Newsletter No. 2, Elephant Editors
Elephant
Errata and comments for Elephant Newsletter No. 2
Miscellaneous, Elephant Editors
Miscellaneous, Elephant Editors
Elephant
Including: a plea for publication of The African Elephant Bibliography; Errata and comments for Elephant 1.2; Information for readers; Proposal of an elephant hotline; and prompts for reader opinion
A New Dipsadine Snake Of The Genus Sibynomorphus From Peru, Douglas A. Rossman, Richard Thomas
A New Dipsadine Snake Of The Genus Sibynomorphus From Peru, Douglas A. Rossman, Richard Thomas
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
Type Specimens Of Birds In The Museo De Historia Natural "Javier Prado," Lima Peru, Manuel A. Plenge
Type Specimens Of Birds In The Museo De Historia Natural "Javier Prado," Lima Peru, Manuel A. Plenge
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
The Relationship Of The Groundsnakes Sonora Semiannulata And S. Episcopa (Serpentes: Colubridae), Darrel R. Frost, Thomas R. Van Devender
The Relationship Of The Groundsnakes Sonora Semiannulata And S. Episcopa (Serpentes: Colubridae), Darrel R. Frost, Thomas R. Van Devender
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
Status Of The Nominal Species Of The Fish Genus Xenoophorus (Goodeidae, Cyprinodontiformes) From Mexico, John M. Fitzsimons
Status Of The Nominal Species Of The Fish Genus Xenoophorus (Goodeidae, Cyprinodontiformes) From Mexico, John M. Fitzsimons
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.
Fisheries Report No 34 - The Status Of The Salt-Water Crocodile In The Glenelg, Prince Regent And Ord River Systems, Kimberley, Western Australia, A. A. Burbidge, H. Messel
Fisheries Report No 34 - The Status Of The Salt-Water Crocodile In The Glenelg, Prince Regent And Ord River Systems, Kimberley, Western Australia, A. A. Burbidge, H. Messel
Fisheries Research Reports
Counts were made of Salt-water Crocodiles (Crocodylus porosus) in the estuarine portions of the Glenelg, Prince Regent and Ord River systems of the Kimberley Division, Western Australia. During the survey 581 crocodiles were seen, including 143 hatchlings. The number of non-hatchling crocodiles in present the Glenelg system is estimated to be 200 to 259, in the Prince Regent 190 to 246 and in the Ord 235 to 306 (95% confidence limits).
The number of non-hatchling crocodiles present in the six Kimberley river systems now counted is estimated to be between 957 and 1243 (95% confidence limits) and we believe that …
The Place For Annual Brome Grass, G W. Anderson
The Place For Annual Brome Grass, G W. Anderson
Journal of the Department of Agriculture, Western Australia, Series 4
Grasses in the anual pastures of southern Australia are particularly important early in the growing season.
The main grass sown, has been annual rygrass, but concerns are emerging with 'annual ryegrass toxicity' and and 'in crop' competition.
This work looks at the role of annual brome grass in pastures.
Status Of The Red-Cockaded Woodpecker At The Felsenthal National Wildlife Refuge In Arkansas, Douglas A. James, Fred L. Burnside Jr.
Status Of The Red-Cockaded Woodpecker At The Felsenthal National Wildlife Refuge In Arkansas, Douglas A. James, Fred L. Burnside Jr.
Journal of the Arkansas Academy of Science
The Red-cockaded Woodpecker is an endangered species that is endemic to mature pine forests of the southeastern United States. In Arkansas it presently occurs only in pinelands of the Ouachita Province and Gulf Coastal Plain. Cavity trees for nesting and roosting must be mature pines diseased with red-heart fungus. Due to recent forestry practices mature pine stands are disappearing thus reducing numbers of needed cavity trees. The Felsenthal National Wildlife Refuge in southeastern Arkansas contains high densities of Red-cockaded Woodpeckers and because of favorable management priorities there the survival of the woodpecker seems assured. Populations of the species in other …
Effects Of Channelization On Fish Populations Of The Cache River And Bayou Deview, Morris Mauney, George L. Harp
Effects Of Channelization On Fish Populations Of The Cache River And Bayou Deview, Morris Mauney, George L. Harp
Journal of the Arkansas Academy of Science
This study was designed to better understand the possible effects of channelization by comparing natural and previously channelized sections of the Cache River and Bayou DeView. Forty-five fish species were collected in natural reaches, but only 24 species were collected in channelized reaches. Cyprinus carpio and Dorosoma cepedianum constituted 40 and 20 percent of the total fish biomass in channelized reaches, respectively, but only 22 and 2 percent of the total biomass in natural reaches. The mean weight of total fishes and game fishes only per surface ha in natural sections were 276 and 46 kg, respectively, but these values …
The Comparative Ecology Of Two Populations Of The Troglobitic Isopod Crustacean Lirceus Usdagalun (Asellidae), James Alexander Estes
The Comparative Ecology Of Two Populations Of The Troglobitic Isopod Crustacean Lirceus Usdagalun (Asellidae), James Alexander Estes
Biological Sciences Theses & Dissertations
Aquatic communities of two caves in Lee Co., Virginia, were compared, and an examination was made of the life history phenomena of the troglobitic isopod Lirceus usdagalun. Measurements of physical and biological parameters were made in Thompson Cedar Cave and Gallohan Cave No. l. A contagious distribution was exhibited by populations of L. usdagalun in both caves and also by the population of another troglobitic isopod, Caecidotea recurvata, in Gallohan Cave No. 1. This distribution was attributed to aggregations of individuals which were considered to occur in areas of preference or optimal habitat patches. Lirceus usdagalun exhibited a …
Animal-Sediment Relationship Study Of The Western Branch Of The Lynnhaven River, Charles Perry Seymour
Animal-Sediment Relationship Study Of The Western Branch Of The Lynnhaven River, Charles Perry Seymour
Biological Sciences Theses & Dissertations
The animal-sediment relationships of the marine benthic infauna of an estuarine river system, Lynnhaven River, Virginia Beach, Virginia, were studied at six sites, sampled bimonthly for one year. Six species were found to dominate all of the sampling periods and sites for the year. The greatest number of individuals, biomass, and species were found at the sand sites. Deposit feeders were recorded in greater number than suspension feeders at both the sand and the mud sites.
Cluster and nodal analyses were successful in demonstrating animal-sediment relationships for the intertidal regions of the river system.
A Population Study Of The Cave Beetle Neaphaenops Tellkampfi (Coleoptera, Carabidae) In Mushroom Cave, Hart County, Kentucky, Robert E. Bon Durant Sr.
A Population Study Of The Cave Beetle Neaphaenops Tellkampfi (Coleoptera, Carabidae) In Mushroom Cave, Hart County, Kentucky, Robert E. Bon Durant Sr.
Masters Theses
A two year census of the cave beetle Neaphaenops tellkampfi (Coleoptera, Carabidae) was conducted in Mushroom Cave, Hart County, Kentucky. Three methods were used to estimate populations of this beetle. A rise in population in certain areas of the cave was shown to occur in Mid-winter. The population as reported is felt to represent a portion of a much larger population which migrates toward the cave entrance beacuse of food shortages in winter with a summer movement back into deep cave habitat when the eggs of Hadenoecus subterraneus are plentiful.
Niobrara-Missouri River Fishery Investigations, Larry W. Hesse, Gene Zeurlein, Roger Vancil, Leonard Koziol, Brad Newcomb, Leigh Ann Retelsdorf
Niobrara-Missouri River Fishery Investigations, Larry W. Hesse, Gene Zeurlein, Roger Vancil, Leonard Koziol, Brad Newcomb, Leigh Ann Retelsdorf
Nebraska Game and Parks Commission: Publications
The Niobrara River heads in the table lands of eastern Wyoming and flows 786 kilometers (km) eastward across Nebraska joining the Missouri River near the town of Niobrara, Nebraska. The Niobrara is the largest Missouri River tributary between the last two mainstem impoundments (Lake Francis Case and Lewis and Clark Lake). Fish movement up the Niobrara is prevented by Nebraska Public Power District's (NPPD's) Spencer Hydroelectric Dam, 63.3 km upstream from the river mouth. The lower reach of the river is turbid and carries a considerable load of sand, silt, and organic debris into the Missouri River. The mean annual …
Nebraska Rainbow Trout, Nebraska Game And Parks, G. Zeurlein, L. Hesse, J. Seeb, L. Wishard
Nebraska Rainbow Trout, Nebraska Game And Parks, G. Zeurlein, L. Hesse, J. Seeb, L. Wishard
Nebraska Game and Parks Commission: Publications
Chapter 1 Lethal and Preferred Temperatures of Lake McConaughy Rainbow Trout Versus Domestic Strain Rainbow Trout By R. Vancil, G. Zuerlein and L. Hesse
Chapter 2 A Nitrifying Filter-Cooling Condenser System for Total Water Re-use in Cold-Water Fish Holding or Rearing Applications By L. Hesse, G. Zuerlein and R. Vancil
Chapter 3 Biochemical Genetic Analysis of Two Strains of Nebraska Rainbow Trout By J. Seeb and L. Wishard
The self-sustaining rainbow trout population living in Lake Mcconaughy and the North Platte River tributaries is unique to the Great Plains region. The population spends most of its adult life in the …
Mollusca Of The Illinois River, Arkansas, M. E. Gordon, Arthur V. Brown, L. Russert Kraemer
Mollusca Of The Illinois River, Arkansas, M. E. Gordon, Arthur V. Brown, L. Russert Kraemer
Journal of the Arkansas Academy of Science
The Illinois River is in the Ozark region of northwestern Arkansas and eastern Oklahoma. A survey of the Illinois River in Arkansas produced nine species and one morphological subspecies of gastropods, three species of sphaeriid clams, and 23 species of unionid mussels. Museum records resulted in another two species and an ecophenotype of the Unionidae. This represents the first published survey of molluscan species from the Illinois River in Arkansas.
Seasonal Abundance And Habitat Distribution Of Birds In Northeastern Arkansas, Earl L. Hanebrink, Alan F. Posey
Seasonal Abundance And Habitat Distribution Of Birds In Northeastern Arkansas, Earl L. Hanebrink, Alan F. Posey
Journal of the Arkansas Academy of Science
Bird sighting records from 1964 through 1978 for 17 northeastern Arkansas counties were compiled according to the seasonal status, relative abundance and habitat distribution of each species. The five seasonal occurrence categories and their relative species composition were: transient visitant (46.6%), summer resident (20.3%), winter resident (14.8%), permanent resident (17.2%) and winter visitant (1.0%). The seven seasonal abundance categories and their relative species composition were: very rare (13.9%), rare 15.9%), uncommon (30.7%), fairly common (10.5%), common (25.6%), very common (1.7%) and abundant (1.7%). Eleven habitat categories were included: campestrian, abandoned fields, forest edge, lowland woods, upland woods, riparian woods, marshes, …
Learning To Live With Spotted Alfalfa Aphid, M Grimm
Learning To Live With Spotted Alfalfa Aphid, M Grimm
Journal of the Department of Agriculture, Western Australia, Series 4
The spotted alfalfa aphid which can devastate lucerne crops and perhaps also medic pastures, has been established in Western Australia since early 1978. However several methods of control are being developed, which could allow continued production of lucerne.
Some Physical And Biological Factors Affecting Red-Tailed Hawk Productivity, Stewart Wayne Janes
Some Physical And Biological Factors Affecting Red-Tailed Hawk Productivity, Stewart Wayne Janes
Dissertations and Theses
Various physical and biological factors affecting annual productivity in a Red-tailed Hawk population in north-central Oregon were investigated. The percentage of the population successfully fledging one or more young was the most important factor in determining the number of young fledged per pair in a given year. Neither clutch size nor the number of young fledged per successful nest varied significantly. Percent pair success was correlated with several January weather variables. A cold and dry January is positively correlated with Red-tailed Hawk productivity. This is apparently related to the onset of rapid vegetative growth and this in turn is positively …