Surface disturbances: their role in accelerating desertification
Jayne Belnap
1995, Environmental Monitoring and Assessment (37) 39-57
Maintaining soil stability and normal water and nutrient cycles in desert systems is critical to avoiding desertification. These particular ecosystem processes are threatened by trampling of livestock and people, and by off-road vehicle use. Soil compaction and disruption of cryptobiotic soil surfaces (composed of cyanobacteria, lichens, and mosses) can result...
Survival estimation and the effects of dependency among animals
Joel A. Schmutz, David H. Ward, James S. Sedinger, Eric A. Rexstad
1995, Journal of Applied Statistics (22) 673-681
Survival models assume that fates of individuals are independent, yet the robustness of this assumption has been poorly quantified. We examine how empirically derived estimates of the variance of survival rates are affected by dependency in survival probability among individuals. We used Monte Carlo simulations to generate known amounts of...
Seasonal ingestion of toxic and nontoxic shot by Canada geese
S. DeStefano, C. J. Brand, M.D. Samuel
1995, Wildlife Society Bulletin (23) 502-506
We used rates of ingested shot and elevated blood-lead levels (≥0.18 ppm) to estimate the proportion of Canada geese (Branta canadensis) exposed to lead on 3 study areas in Manitoba, Minnesota, and Missouri. Lead exposure was prevalent on all areas and was common after the hunting season closed, when up...
Simple QBASIC program used to compare biological regressions
J.D. Teska
1995, NBS Information Bulletin (45)
No abstract available at this time...
Buried soils in a perched dunefield as indicators of late holecene lake-level change in the Lake Superior basin
John B. Anderton, Walter L. Loope
1995, Quaternary Research (44) 190-199
A stratigraphic analysis of buried soils within the Grand Sable Dunes, a dune field perched 90 m above the southern shore of Lake Superior, reveals a history of eolian activity apparently linked with lake-level fluctuations over the last 5500 yr. A relative rise in the water plane of the Nipissing...
An alternative bacteriological medium for the isolation of Aeromonas spp.
J.A. Jenkins, P.W. Taylor
1995, Journal of Wildlife Diseases (31) 272-275
Two solid bacteriologic media were compared for cultivating Aeromonas spp. from piscine sources: the Rimler-Shotts (RS) medium and a starch-glutamate-ampicillin-penicillin-based medium (SGAP-10C) used for the recovery of Aeromonas spp. from water samples. The selective and differential capacities of the media were assessed March through October 1992 by recovery rate and...
Decline of catfish liver neoplasms after coking plant closes demonstrates natural remediation
J.C. Harshbarger, P. C. Baumann
1995, Proceedings of the American Association for Cancer Research (36) 279-279
No abstract available at this time....
Ichthyoplankton abundance and variance in a large river system concerns for long-term monitoring
Leslie E. Holland-Bartels, Michael R. Dewey, Steven J. Zigler
1995, Regulated Rivers: Research & Management (10) 1-13
System-wide spatial patterns of ichthyoplankton abundance and variability were assessed in the upper Mississippi and lower Illinois rivers to address the experimental design and statistical confidence in density estimates. Ichthyoplankton was sampled from June to August 1989 in primary milieus (vegetated and non-vegated backwaters and impounded areas, main channels and...
The effects of vertebrate herbivory on plant community structure in the coastal marshes of the Pearl River, Louisiana, USA
K.L. Taylor, J.B. Grace
1995, Wetlands (15) 68-73
In this study, we investigated the impacts of herbivory by the introduced aquatic herbivore, nutria (Myocastor coypus), on three marsh communities of the Pearl River using fenced exclosures and control plots. Although total community above-ground biomass was reduced by 30% in the plots exposed to herbivory as compared...
Evaluation of freshwater mussel relocation as a conservation and management strategy
W. Gregory Cope, Diane L. Waller
1995, Regulated Rivers: Research & Management (11) 147-155
The relocation of unionacean mussels is commonly used as a conservation and management tool in large rivers and streams. Relocation has been used to recolonize areas where mussel populations have been eliminated by prior pollution events, to remove mussels from construction zones and to re-establish populations of endangered species. More...
Declines in aquatic vegetation in navigation pool no. 8, upper Mississippi River between 1975 and 1991
John R. Fischer, Thomas O. Claflin
1995, Regulated Rivers: Research & Management (11) 157-165
The biomass and frequency of occurrence of aquatic macrophytes observed during 1975 and 1991 in Navigation Pool No. 8 of the upper Mississippi River were compared. Samples were collected from contiguous backwater, isolated backwater and impounded habitat types. Overall declines were observed in both frequency and biomass between the two...
Geographic names of the Antarctic
U.S. Board on Geographic Names, Water Resources Division, U.S. Geological Survey, Defense Mapping Agency, National Science Foundation
Fred G. Alberts, editor(s)
1995, Report 95-157
This gazetteer contains 12,710 names approved by the United States Board on Geographic Names and the Secretary of the Interior for features in Antarctica and the area extending northward to the Antarctic Convergence. Included in this geographic area, the Antarctic region, are the off-lying South Shetland Islands, the South Orkney...
Wisconsin: A summary of cooperative water-resources investigations 1995
Water Resources Division, U.S. Geological Survey, Wisconsin Department of Natural Resources
1995, Report
The objectives of this study are to provide continuous discharge records for selected rivers at specific sites to supply the needs for regulation, analytical studies, definition of statistical properties, trends analysis, determination of the occurrence, and distribution of water in streams for planning. The project is also designed to determine...
Distribution and elimination of [14C] sarafloxacin hydrochloride from tissues of juvenile channel catfish (Ictalurus punctatus)
W.H. Gingerich, J.R. Meinertz, V. K. Dawson, J.E. Gofus, L.J. Delaney, P.R. Bunnell
1995, Aquaculture (131) 23-36
The distribution and loss of radioactivity from tissues were determined in 60 juvenile channel catfish (Ictalurus punctatus) following oral dosing with the candidate fish therapeutant Sarafin® ([14C] sarafloxacin hydrochloride) at 10 mg/kg for 5 consecutive days. Twelve groups of 5 fish each were sampled at selected times ranging from 3...
Wildlife disease and conservation in Hawaii: pathogenicity of avian malaria (Plasmodium relictum) in experimentally infected Iiwi (Vestiaria coccinea)
C. T. Atkinson, K.L. Woods, Robert J. Dusek, L.S. Sileo, W.M. Iko
1995, Parasitology (111) S59-S69
Native Hawaiian forest birds are facing a major extinction crisis with more than 75% of species recorded in historical times either extinct or endangered. Reasons for this catastrophe include habitat destruction, competition with non-native species, and introduction of predators and avian diseases. We tested susceptibility of Iiwi (Vestiaria coccinea), a...
Geomorphic and geochemical evidence for the source of sand in the Algodones dunes, Colorado Desert, southeastern California
D.R. Muhs, C. A. Bush, S.D. Cowherd, S. Mahan
V.P. Tchakerian, editor(s)
1995, Book chapter, Desert aeolian processes
Hypopi (Acari: Hypoderatidae) of the wood stork (Aves: Ciconiiformes: Ciconiidae)
Danny B. Pence, N. J. Thomas
1995, Journal of Medical Entomology (32) 895-899
A new species is described and additional host records are presented for 2 other species of deutonymphs of the family Hypoderatidae from the subcutaneous adipose tissues of the wood stork, Mycteria americana L. Phalacrodectes (Phalacrodectes) mycteria n. sp. appears to share affinities with species from both pelicaniform and ciconiiform hosts, but it most closely...
Use of gene marking to assess stocking success of red drum in Texas bays
R. Ward, T.L. King, I.R. Blandon, L.W. McEachron
1995, Book, American Fisheries Society Symposium
No abstract available at this time....
Linear solvation energy relationship of the limiting partition coefficient of organic solutes between water and activated carbon
Dean C. Luehrs, James P. Hickey, Peter E. Nilsen, K.A. Godbole, Tony N. Rogers
1995, Environmental Science & Technology (30) 143-152
A linear solvation energy relationship has been found for 353 values of the limiting adsorption coefficients of diverse chemicals: log K = −0.37 + 0.0341Vi − 1.07β + D + 0.65P with R = 0.951, s = 0.51, n = 353, and F = 818.0, where Vi is the intrinsic...
Estimating number of species and relative abundances in stream-fish communities: effects of sampling effort and discontinuous spatial distributions
Paul L. Angermeier, Roy A. Smogor
1995, Canadian Journal of Fisheries and Aquatic Sciences (52) 936-949
We sampled fishes and measured microhabitat in series of contiguous habitat units (riffles, runs, pools) in three Virginia streams. We used Monte Carlo simulations to construct hypothetical series of habitat units, then examined how number of species, similarity in relative abundances, and number of microhabitats accumulated with increasing number of...
Year-round movements of a Wahlberg's Eagle Aquila wahlbergi tracked by satellite
B.-U. Meyburg, J.M. Mendelsohn, D. H. Ellis, D.G. Smith, C. Meyburg, A.C. Kemp
1995, Ostrich (66) 135-140
An adult female Wahlberg's Eagle from northern Namibia was tracked by satellite ovcr a total distance of 8816 km and located 104 times between 11 February and 4 November 1994. It migrated on an almost due north heading to northern Cameroon, north-eastern Nigeria and western Chad through the rain forest...
Mark-resighting analysis of a California gull population
Bruce H. Pugesek, Chris Nations, K.L. Diem, Roger Pradel
1995, Journal of Applied Statistics (22) 625-639
California gulls (Larus californicus) of known age and sex were censused on their breeding colony in 1979, 1980 and 1984 through 1993. Ages of 235 males and 196 females ranged from 4 to 27 years. Age classes used in the analysis were limited to 17, 4 through 19, and 20...
Habitat use at night by wintering American woodcock in coastal Georgia and Virginia
David G. Krementz, John T. Seginak, Grey W. Pendleton
1995, The Wilson Bulletin (107) 686-697
Nocturnal habitats used by American woodcock (Scolopux minor) were studied using radio telemetry at two coastal wintering sites in Georgia (1982-84) and Virginia (1991-92). In Georgia, use of forested habitats at night was extensive while use of fields at night varied between years but generally was low. We found no...
The ninety-fifth Christmas Bird Count. OC MD. Ocean City, MD
C.S. Robbins, J.M. Sheppard
1995, National Audubon Society Field Notes (49) 493
The case for saving species: Scientists explain why we should stop squandering nature's riches
M.S. Foster
1995, Defenders (70) 40
