Performance of barbed and barbless hooks in a marine recreational fishery
Jeffrey S. Schaeffer, Elizabeth M. Hoffman
2002, North American Journal of Fisheries Management (22) 229-235
We used an angling study to examine catch per unit effort (CPUE), bait loss, and total landings by anglers fishing with natural bait on barbed and barbless hooks in a nearshore marine sport fishery located in the Gulf of Mexico near St. Petersburg, Florida. Anglers fished half the day with...
Using groundwater levels to estimate recharge
R. W. Healy, P.G. Cook
2002, Hydrogeology Journal (10) 91-109
Accurate estimation of groundwater recharge is extremely important for proper management of groundwater systems. Many different approaches exist for estimating recharge. This paper presents a review of methods that are based on groundwater-level data. The water-table fluctuation method may be the most widely used technique for estimating recharge; it requires...
Mercury adsorption properties of sulfur-impregnated adsorbents
N.-C. Hsi, M.J. Rood, M. Rostam-Abadi, S. Chen, R. Chang
2002, Journal of Environmental Engineering (128) 1080-1089
Carbonaceous and noncarbonaceous adsorbents were impregnated with elemental sulfur to evaluate the chemical and physical properties of the adsorbents and their equilibrium mercury adsorption capacities. Simulated coal combustion flue gas conditions were used to determine the equilibrium adsorption capacities for Hg0 and HgCl2 gases to better understand how to remove...
Seismic anisotropy and mantle creep in young orogens
R. Meissner, Thomas C. Mooney, I. Artemieva
2002, Geophysical Journal International (149) 1-14
Seismic anisotropy provides evidence for the physical state and tectonic evolution of the lithosphere. We discuss the origin of anisotropy at various depths, and relate it to tectonic stress, geotherms and rheology. The anisotropy of the uppermost mantle is controlled by the orthorhombic mineral olivine, and may result from ductile...
Wetland macroinvertebrates of Prentiss Bay, Lake Huron, Michigan: diversity and functional group composition
R.W. Merritt, M.E. Benbow, P.L. Hudson
2002, Great Lakes Entomologist (35) 149-160
The Great Lakes support many fish and waterbirds that depend directly or indirectly on coastal wetlands during some portion of their life cycle. It is known that macroinvertebrates make up an important part of wetland food webs and ecosystem function; however, our understanding of species distribution within and among...
Characterization of the spatial variability of channel morphology
J. A. Moody, B.M. Troutman
2002, Earth Surface Processes and Landforms (27) 1251-1266
The spatial variability of two fundamental morphological variables is investigated for rivers having a wide range of discharge (five orders of magnitude). The variables, water-surface width and average depth, were measured at 58 to 888 equally spaced cross-sections in channel links (river reaches between major tributaries). These measurements provide data...
Validation study, ERP sites 25, 37, 133, and corresponding reference sites. Biological impact of TCE and PCE on wild rodent and reptile populations, Edwards Air Force Base, California. Final report. Edwards Air Force Base, California
S. Spring, A.K. Miles
2002, Report
No abstract available at this time...
[Book review] Epiphytic Lichen Diversity and its Dependence on Chemical Site Factors in Differently Elevated Dieback-affected Spruce Stands of the Harz Mountains, by Volker Hesse
J. P. Bennett
2002, Bryologist (105) 730-731
Review of: Epiphytic lichen diversity and its dependence on chemical site factors in differently elevated dieback-affected spruce stands of the Harz Mountains. (Dissertationes Botanicae, Band 354). Volker Hesse. 2002. 191 pages, 66 figures, 49 tables, 23x14cm, 390 g. ISBN 978-3-443-64266-2....
First record of the Arizona cotton rat (Sigmodon arizonae) in New Mexico
J.K. Frey, R.D. Fisher, M.A. Bogan, C. Jones
2002, Southwestern Naturalist (47) 491-493
No abstract available....
Role analysis to initiate citizen involvement: A case study of the Wyoming grizzly bear management planning process
P.D. Ponds, N. Burkardt
2002, Human Dimensions of Wildlife (7) 301-302
No abstract available....
Comparison of 5 benthic samplers to collect burrowing mayfly nymphs (Hexagenia spp.:Ephemeroptera:Ephemeridae) in sediments of the Laurentian Great Lakes
Don W. Schloesser, Thomas F. Nalepa
2002, Journal of the North American Benthological Society (21) 487-501
The recent return of burrowing mayfly nymphs (Hexagenia spp.) to western Lake Erie of the Laurentian Great Lakes has prompted a need to find a sampler to obtain the most accurate (i.e., highest mean density) and precise (i.e., lowest mean variance) abundance estimates of nymphs. The abundance of burrowing nymphs is...
Golden eagles in the U.S. and Canada: Status, trends, and conservation challenges
Michael N. Kochert, Karen Steenhof
2002, Journal of Raptor Research (36) 32-40
We reviewed the literature to assess status and population trends and to identify mortality factors affecting Golden Eagle populations in the U.S. and Canada. Nesting populations in Alaska and Canada are stable, but some nesting populations in the western U.S. have declined. Small but steady declines in the intermountain West have...
Bryophytes and lichens: Small but indispensable forest dwellers
Martin Hutten, Andrea Woodward
2002, Fact Sheet 154-02
* What is a Bryophyte? * Bryophytes are the small green plants commonly known as mosses, liverworts and hornworts. Compared to plants, they have primitive tissues for conducting food and water, and they lack a protective outer surface to maintain water balance. Most bryophytes, because they lack tissues such as roots,...
Toward better atlases: improving presence-absence information
Douglas H. Johnson, G.A. Sargeant
J. M. Scott, et al., editor(s)
2002, Book chapter, Predicting species occurrences: issues of accuracy and scale
Sea otter (Enhydra lutris) perspective: Part A. Sea otter population status and the process of recovery from the 1989 Exxon Valdez oil spill
James L. Bodkin, Brenda E. Ballachey, Thomas A. Dean, Allan K. Fukuyama, Stephen C. Jewett, Lyman L. McDonald, Daniel H. Monson, Charles E. O’Clair, Glenn R. VanBlaricom
Leslie E. Holland-Bartels, editor(s)
2002, Report, Mechanisms of impact and potential recovery of nearshore vertebrate predators following the 1989 <i>Exxon Valdez</i> oil spill
Sea otter (Enhydra lutris) populations were severely affected by the 1989 Exxon Valdez oil spill in western Prince William Sound, AK, and had not fully recovered by 2000. Here we present results of population surveys and incorporate findings from related studies to identify current population status and factors affecting recovery....
History and environmental setting of the Grand Calumet River
Meredith Becker Nevers, Richard L. Whitman, Paul J. Gerovac
2002, Proceedings of the Indiana Academy of Science (108/109) 3-10
The Grand Calumet River lies in an area of great ecological diversity, a result of the convergence of three biomes during glaciation. Over thousands of years the region and the river have changed ecologically due to ice retreat, lake level declines, settlement and industrialization. Settlement and industrialization have...
Pintails on the move
M. Miller, J. Fleskes, D. Orthmeyer, John Y. Takekawa, Michael L. Casazza, B. Perry
2002, California Waterfowl 8, 10-13
No abstract available at this time...
Distribution and movements of female northern pintails radiotagged in San Joaquin Valley, California
Joseph P. Fleskes, Robert L. Jarvis, David S. Gilmer
2002, Journal of Wildlife Management (66) 138-152
To improve understanding of northern pintail (Anas acuta) distribution in central California (CCA), we radiotagged 191 Hatch-Year (HY) and 228 After-Hatch-Year (AHY) female northern pintails during late August-early October, 1991-1993, in the San Joaquin Valley (SJV) and studied their movements through March each year. Nearly all (94.3%) wintered in CCA,...
Meeting ecological and societal needs for freshwater
Jill Baron, N.L. Poff, P. L. Angermeier, Clifford N. Dahm, P.H. Gleick, N.G. Hairston Jr., R.B. Jackson, C.A. Johnston, B. D. Richter, A.D. Steinman
2002, Ecological Applications (12) 1247-1260
Human society has used freshwater from rivers, lakes, groundwater, and wetlands for many different urban, agricultural, and industrial activities, but in doing so has overlooked its value in supporting ecosystems. Freshwater is vital to human life and societal well-being, and thus its utilization for consumption, irrigation, and transport has long...
Assessing vulnerability to invasion by nonnative plant species at multiple spatial scales
T.J. Stohlgren, G.W. Chong, L. D. Schell, K.A. Rimar, Yuka Otsuki, M. Lee, M. A. Kalkhan, C.A. Villa
2002, Environmental Management (29) 566-577
Basic information on where nonnative plant species have successfully invaded is lacking. We assessed the vulnerability of 22 vegetation types (25 sets of four plots in nine study areas) to nonnative plant invasions in the north–central United States. In general, habitats with high native species richness were more heavily invaded...
Tulare Basin Waterfowl and Central Valley Duck Hunters
Joseph P. Fleskes
2002, California Waterfowl 12-13
No abstract available at this time...
Observations of the larval stages of Diceroprocta apache Davis (Homoptera: Tibicinidae)
A.R. Ellingson, D.C. Andersen, B.C. Kondratieff
2002, Journal of the Kansas Entomological Society (75) 283-289
Diceroprocta apache Davis is a locally abundant cicada in the riparian woodlands of the southwestern United States. While its ecological importance has often been hypothesized, very little is known of its specific life history. This paper presents preliminary information on life history of D. apache from larvae collected in the...
Estimates of carrying capacity for sea otters in Washington state
K.L. Laidre, R.J. Jameson, S.J. Jeffries, R.C. Hobbs, C.E. Bowlby, G.R. VanBlaricom
2002, Wildlife Society Bulletin (30) 1172-1181
Analyses of eggs of three species of North American accipitrine hawks for organochlorines and heavy metals indicate that contamination with DDE may be the primary cause of recent population declines of two of the species, Cooper's hawk and sharp-shinned hawk....
Floristic quality assessment of one natural and three restored wetland complexes in North Dakota, USA
David M. Mushet, Ned H. Euliss Jr., Terry L. Shaffer
2002, Wetlands (22) 126-138
Floristic quality assessment is potentially an important tool for conservation efforts in the northern Great Plains of North America, but it has received little rigorous evaluation. Floristic quality assessments rely on coefficients assigned to each plant species of a region’s flora based on the conservatism of each species relative to...
Foraging locations of double-crested cormorants on western Lake Erie: Site characteristics and spatial associations with prey fish densities
Martin A. Stapanian, Michael T. Bur, Jeffrey T. Tyson, Thomas W. Seamans, Bradley F. Blackwell
2002, Journal of Great Lakes Research (28) 155-171
Radio-tagged double-crested cormorants (Phalacrocorax auritus) nesting on Middle Island, Ontario and unmarked cormorants in the western basin of Lake Erie were monitored in 1999. Radio-tagged cormorants were located by aircraft and by boat along regular survey routes. In addition, foraging flocks of radio-tagged and unmarked cormorants were located during the...
