The effects of timber harvesting on the structure and composition of adjacent old-growth coast redwood forest, California, USA
William H. Russell, C. Jones
2001, Landscape Ecology (16) 731-741
Data collected across timber harvest boundaries on nine sites within the Redwood National and State Park management area in California, USA, were used to estimate the effective size of old-growth coast redwood preserves. Fourteen variables related to stand structure and composition, wildlife habitat, and physical environment were significantly correlated to...
Creation of residual flows in a partially stratified estuary
M.T. Stacey, J.R. Burau, Stephen G. Monismith
2001, Journal of Geophysical Research C: Oceans (106) 17013-17037
The creation of residual flows in estuaries is examined using acoustic Doppler current profiler data sets from northern San Francisco Bay. The data sets are analyzed using principal component analysis to examine the temporal variability of the flows which create the residual circulation. It is seen that in this periodically...
Moose, caribou, and grizzly bear distribution in relation to road traffic in Denali National Park, Alaska
A. C. Yost, R.G. Wright
2001, Arctic (54) 41-48
Park managers are concerned that moose (Alces alces), caribou (Rangifer tarandus), and grizzly bears (Ursus arctos) may be avoiding areas along the 130 km road through Denali National Park as a result of high traffic volume, thus decreasing opportunities for visitors to view wildlife. A wildlife monitoring system was developed in...
Three-dimensional fish tracking to evaluate the operation of the Lower Granite surface bypass collector and behavioral guidance structure during 2000, Annual report 2000
K.M Cash, N.S. Adams, T.W Hatton, E.C. Jones, D.W. Rondorf
2001, Report
Abstract not available ...
Gas bubble disease in resident fish below Grand Coulee Dam. Annual report 1999
D.A. Venditti, T.C. Robinson, J.W. Beeman, B.J. Adams, A.G. Maule
2001, Report
Abstract not available ...
Estimating numbers of females with cubs-of-the-year in the Yellowstone grizzly bear population
K.A. Keating, C.C. Schwartz, M.A. Haroldson, D. Moody
2001, Ursus (13) 161-174
For grizzly bears (Ursus arctos horribilis) in the Greater Yellowstone Ecosystem (GYE), minimum population size and allowable numbers of human-caused mortalities have been calculated as a function of the number of unique females with cubs-of-the-year (FCUB) seen during a 3- year period. This approach underestimates the total number of FCUB,...
The behaviour of 39 pesticides in surface waters as a function of scale
P. D. Capel, S.J. Larson, T. A. Winterstein
2001, Hydrological Processes (15) 1251-1269
A portion of applied pesticides runs off agricultural fields and is transported through surface waters. In this study, the behaviour of 39 pesticides is examined as a function of scale across 14 orders of magnitude from the field to the ocean. Data on pesticide loads in streams from two US...
Effective population size and genetic structure of a Piute ground squirrel (Spermophilus mollis) population
Michael F. Antolin, Beatrice Van Horne, Michael D. Berger
2001, Canadian Journal of Zoology (79) 26-34
Piute ground squirrels (Spermophilus mollis) are distributed continuously in habitat dominated by native shrubs and perennial grasses in the Snake River Birds of Prey National Conservation Area in Idaho, U.S.A. This habitat is being fragmented and replaced by exotic annual plants, changing it to a wildfire-dominated system that provides poor...
Flow, temperature, and habitat conditions in the Wind River watershed
I.G. Jezorek, P.J. Connolly
2001, Report, Wind River watershed restoration. Volume IV
Abstract not available...
Coastal sage scrub case study
T. J. Case, Robert N. Fisher
C. Hunsaker, M. Goodchild, Mark A. Friedl, T. Case, editor(s)
2001, Book chapter, Spatial uncertainty in ecology
In ecological applications of large-scale spatial data to management decisions concerning land planning and conservation, errors and biases may creep into the analysis and decision making at several steps (see Chaps. 1, 2, and 3), including:•Uncertainty in positions of spatial locations of relevant ecological and physiographic features of...
Survival of female wood ducks during brood rearing in Mississippi and Alabama
J. B. Davis, R.M. Kaminski, B.D. Leopold, R. R. Cox Jr.
2001, Journal of Wildlife Management (65) 738-744
Knowledge of survival of female ducks is important for understanding population dynamics and managing hunted species. We estimated survival of female wood ducks (Aix sponsa) during brood rearing in different wetland environments in Mississippi (1996-1999) and Alabama (1998-1999). Survival was 0.90 ± 0.05 (Ŝ ± SE) in Mississippi and 0.92...
Diagnostic histological findings in Yosemite toads (Bufo canorus) from die-off in the 1970s
D. Earl Green, Cynthia Kagarise Sherman
2001, Journal of Herpetology (35) 92-103
Twelve adult and 25 larval Yosemite toad (Bufo canorus) specimens from the eastern Sierra Nevada of California were examined histologically for evidence of infectious, toxicological, and degenerative diseases. The preserved toads were selected from 21 that had been salvaged or collected during a die-off in 1976-1979 that immediately preceded a...
First finding of the amphipod Echinogammarus ischnus and the mussel Dreissena bugensis in Lake Michigan
Thomas F. Nalepa, Don W. Schloesser, Steve A. Pothoven, Darryl W. Hondorp, David L. Fanslow, Marc L. Tuchman, Guy W. Fleischer
2001, Journal of Great Lakes Research (27) 384-391
The first finding of the amphipod Echinogammarus ischnus and the mussel Dreissena bugensis in Lake Michigan is documented. These two species are widespread and abundant in the lower lakes, but had not yet been reported from Lake Michigan. E. ischnus is generally considered a warmwater form that is typically associated with hard substrates and Dreissena clusters in the...
Duck plague epizootics in the United States, 1967-1995
Kathryn A. Converse, Gregory A. Kidd
2001, Journal of Wildlife Diseases (37) 347-357
In 1967, the first confirmed diagnosis of duck plague (DP) in the USA was made from pekin ducks (Anas platyrhynchos domesticus) on commercial duck farms on Long Island, New York. Within 10 mo, DP was confirmed as the cause of death in migratory waterfowl on a Long Island bay. This...
Assessing an open-well aquifer test in fractured crystalline rock
C. R. Tiedeman, P. A. Hsieh
2001, Ground Water (39) 68-78
Use of open wells to conduct aquifer tests in fractured crystalline rock aquifers is potentially problematic, because open wells can hydraulically connect highly permeable fracture zones at different depths within the rock. Because of this effect, it is questionable whether estimates of the hydraulic properties of the rock obtained from...
Toward a national fuels mapping strategy: Lessons from selected mapping programs
Thomas R. Loveland
2001, International Journal of Wildland Fire (10) 289-299
The establishment of a robust national fuels mapping program must be based on pertinent lessons from relevant national mapping programs. Many large-area mapping programs are under way in numerous Federal agencies. Each of these programs follows unique strategies to achieve mapping goals and objectives. Implementation approaches range from highly centralized...
Identifying unprotected and potentially at risk plant communities in the western USA
R.G. Wright, J. M. Scott, S. Mann, M. Murray
2001, Biological Conservation (98) 97-106
We analyzed the conservation status of 73 vegetation cover types distributed across a 1.76 million km2 region in 10 states of the western USA. We found that 25 vegetation cover types had at least 10% of their area in nature reserves. These were generally plant communities located at higher elevations...
Identification of alkyl dimethylbenzylammonium surfactants in water samples by solid-phase extraction followed by ion trap LC/MS and LC/MS/MS
I. Ferrer, E. T. Furlong
2001, Environmental Science & Technology (35) 2583-2588
A novel methodology was developed for the determination of alkyl (C12, C14, and C16) dimethylbenzylammonium chloride (benzalkonium chloride or BAC, Chemical Abstract Service number: 8001-54-5) in water samples. This method is based on solid-phase extraction (SPE) using polymeric cartridges, followed by high-performance liquid chromatography/ion trap mass spectrometry (LC/MS) and tandem...
Foraging time and dietary intake by breeding ross's and lesser snow geese
M.L. Gloutney, R.T. Alisauskas, A. D. Afton, S. M. Slattery
2001, Oecologia (127) 78-86
We compared foraging times of female Ross's (Chen rossii) and Lesser Snow Geese (Chen caerulescens caerulescens) breeding at Karrak Lake, NT, Canada and examined variation due to time of day and reproductive stage. We subsequently collected female geese that had foraged for known duration and we estimated mass of foods...
Some suggested future directions of quantitative resource assessments
D.A. Singer
2001, Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences (26) 152-156
Future quantitative assessments will be expected to estimate quantities, values, and locations of undiscovered mineral resources in a form that conveys both economic viability and uncertainty associated with the resources. Historically, declining metal prices point to the need for larger deposits over time. Sensitivity analysis demonstrates that the greatest opportunity...
Demographic response of black bears at Cold Lake, Alberta, to the removal of adult males
Glen A. Sargeant, Robert L. Ruff
2001, Ursus (12) 59-68
Previous reports described an increase in population density following the removal of 23 adult male black bears (Ursus americanus) from a 218-km2 study area near Cold Lake, Alberta (the CLSA). This finding plays a central role in continuing debates over population regulation in bears, but has recently been criticized because...
Water Resources Data, Alaska, Water Year 2000
D. F. Meyer, D.L. Hess, M.F. Schellekens, C. W. Smith, E.F. Snyder, G. L. Solin
2001, Water Data Report AK-00-1
Water-resources data for the 2000 water year for Alaska consists of records of stage, discharge, and water quality of streams; stages of lakes; and water levels and water quality of ground-water wells. This volume contains records for water discharge at 106 gaging stations; stage or contents only at 4 gaging...
Statistics for wildlifers: how much and what kind?
Douglas H. Johnson, T.L. Shaffer, W.E. Newton
2001, Wildlife Society Bulletin (29) 1055-1060
Quantitative methods are playing increasingly important roles in wildlife ecology and, ultimately, management. This change poses a challenge for wildlife practitioners and students who are not well-educated in mathematics and statistics. Here we give our opinions on what wildlife biologists should know about statistics, while recognizing that not everyone is...
Habitat fragmentation effects on birds in grasslands: A critique of our knowledge
Douglas H. Johnson
2001, Great Plains Research (11) 211-231
Habitat fragmentation exacerbates problems due to habitat loss for grassland and wetland birds. Remaining patches of grassland and wetland may be too small, too isolated, and too influenced by edge effects to maintain viable populations of some breeding birds. Knowledge of the effects of fragmentation on bird populations is critically...
Cholinergic and behavioral neurotoxicity of carbaryl and cadmium to larval rainbow trout (Oncorhynchus mykiss)
S.L. Beauvais, S.B. Jones, J.T. Parris, S.K. Brewer, E. E. Little
2001, Ecotoxicology and Environmental Safety (49) 84-90
Pesticides and heavy metals are common environmental contaminants that can cause neurotoxicity to aquatic organisms, impairing reproduction and survival. Neurotoxic effects of cadmium and carbaryl exposures were estimated in larval rainbow trout (RBT; Oncorhynchus mykiss) using changes in physiological endpoints and correlations with behavioral responses. Following exposures, RBT were videotaped...
