Factors affecting settling, survival, and viability of black bears reintroduced to Felsenthal National Wildlife Refuge, Arkansas
B.J. Wear, R. Eastridge, J. D. Clark
2005, Wildlife Society Bulletin (33) 1363-1374
We used radiotelemetry and population modeling techniques to examine factors related to population establishment of black bears (Ursus americanus) reintroduced to Felsenthal National Wildlife Refuge (NWR), Arkansas. Our objectives were to determine whether settling (i.e., establishment of a home range at or near the release site), survival, recruitment, and population...
Patterns of plant species richness, rarity, endemism, and uniqueness in an arid landscape
T.J. Stohlgren, D.A. Guenther, P.H. Evangelista, N. Alley
2005, Ecological Applications (15) 715-725
Most current conservation literature focuses on the preservation of hotspots of species diversity and endemism, as if the two were geographically synonymous. At landscape scales this may not be the case. We collected data from 367 1000-m2 plots in the Grand Staircase–Escalante National Monument, Utah, USA, to show that: (1)...
Major and trace element composition of copiapite-group minerals and coexisting water from the Richmond mine, Iron Mountain, California
H.E. Jamieson, C. Robinson, Charles N. Alpers, R. Blaine McCleskey, D. Kirk Nordstrom, Ronald C. Peterson
2005, Chemical Geology (215) 387-405
Copiapite-group minerals of the general formula AR4(SO4)6(OH)2·nH2O, where A is predominantly Mg, Fe2+, or 0.67Al3+, R is predominantly Fe3+, and n is typically 20, are among several secondary hydrous Fe sulfates occurring in the inactive mine workings of the massive sulfide deposit at Iron Mountain, CA, a USEPA Superfund site...
Perchlorate isotope forensics
J.K. Böhlke, N.C. Sturchio, B. Gu, J. Horita, G.M. Brown, W.A. Jackson, J. Batista, P.B. Hatzinger
2005, Analytical Chemistry (77) 7838-7842
Perchlorate has been detected recently in a variety of soils, waters, plants, and food products at levels that may be detrimental to human health. These discoveries have generated considerable interest in perchlorate source identification. In this study, comprehensive stable isotope analyses (37Cl/35Cl and 18O/17O/16O) of perchlorate from known synthetic and natural...
Estimating population size from DNA-based closed capture-recapture data incorporating genotyping error
P.M. Lukacs, K.P. Burnham
2005, Journal of Wildlife Management (69) 396-403
[No abstract available]...
Evaluation of argon ages and integrity of fluid-inclusion compositions: Stepwise noble gas heating experiments on 1.87 Ga alunite from Tapajós Province, Brazil
G. P. Landis, L.W. Snee, Caetano Juliani
2005, Chemical Geology (215) 127-153
Quantitative analyses are reported for active (N2, CH4, CO, CO2, H2, O2, HF, HCl, H2S, SO2) and noble (He, Ar, Ne) gases released by crushing and step heating of magmatic-hydrothermal alunite from the Tapajós gold province in Brazil. This is the oldest known alunite (40Ar/39Ar age of 1.87 Ga),...
Challenges in evaluating the impact of the trade in amphibians and reptiles on wild populations
Martin A. Schlaepfer, Craig Hoover, C. Kenneth Dodd Jr.
2005, BioScience (55) 256-263
Amphibians and reptiles are taken from the wild and sold commercially as food, pets, and traditional medicines. The overcollecting of some species highlights the need to assess the trade and ensure that it is not contributing to declines in wild populations. Unlike most countries, the United States tracks the imports...
Thermal state and complex geology of a heterogeneous salty crust of Jupiter's satellite, Europa
O. Prieto-Ballesteros, J.S. Kargel
2005, Icarus (173) 212-221
The complex geology of Europa is evidenced by many tectonic and cryomagmatic resurfacing structures, some of which are "painted" into a more visible expression by exogenic alteration processes acting on the principal endogenic cryopetrology. The surface materials emplaced and affected by this activity are mainly composed of water ice in...
Evidence and implications of recent climate change in Northern Alaska and other Arctic regions
L. D. Hinzman, N.D. Bettez, W.R. Bolton, F.S. Chapin, M.B. Dyurgerov, C.L. Fastie, B. Griffith, R.D. Hollister, Allen Hope, H.P. Huntington, A.M. Jensen, G.J. Jia, T. Jorgenson, D.L. Kane, D.R. Klein, G. Kofinas, A.H. Lynch, A.H. Lloyd, A. D. McGuire, Frederick E. Nelson, W.C. Oechel, T.E. Osterkamp, C.H. Racine, V.E. Romanovsky, R. S. Stone, D.A. Stow, M. Sturm, C.E. Tweedie, G.L. Vourlitis, M.D. Walker, D.A. Walker, P.J. Webber, J.M. Welker, K.S. Winker, K. Yoshikawa
2005, Climatic Change (72) 251-298
The Arctic climate is changing. Permafrost is warming, hydrological processes are changing and biological and social systems are also evolving in response to these changing conditions. Knowing how the structure and function of arctic terrestrial ecosystems are responding to recent and persistent climate change is paramount to understanding the future...
Scientific results from the Mallik 2002 gas hydrate production research well program, Mackenzie Delta, northwest territories, Canada: Preface
S.R. Dallimore, T. S. Collett, A.E. Taylor, T. Uchida, M. Weber, A. Chandra, T.H. Mroz, E.M. Caddel, T. Inoue
2005, Bulletin of the Geological Survey of Canada
[No abstract available]...
Geostatistical analysis of allele presence patterns among American black bears in eastern North Carolina
L.M. Thompson, F.T. Van Manen, T.L. King
2005, Ursus (16) 59-69
Highways are one of the leading causes of wildlife habitat fragmentation and may particularly affect wide-ranging species, such as American black bears (Ursus americanus). We initiated a research project in 2000 to determine potential effects of a 4-lane highway on black bear ecology in Washington County, North Carolina. The research...
Viscoelasticity, postseismic slip, fault interactions, and the recurrence of large earthquakes
A.J. Michael
2005, Bulletin of the Seismological Society of America (95) 1594-1603
The Brownian Passage Time (BPT) model for earthquake recurrence is modified to include transient deformation due to either viscoelasticity or deep post seismic slip. Both of these processes act to increase the rate of loading on the seismogenic fault for some time after a large event. To approximate these effects,...
The accuracy of matrix population model projections for coniferous trees in the Sierra Nevada, California
Phillip J. van Mantgem, Nathan L. Stephenson
2005, Journal of Ecology (93) 737-747
1 We assess the use of simple, size-based matrix population models for projecting population trends for six coniferous tree species in the Sierra Nevada, California. We used demographic data from 16 673 trees in 15 permanent plots to create 17 separate time-invariant, density-independent population...
Unraveling the effects of sex and dispersal: Ozark big-eared bat (Corynorhinus townsendii ingens) conservation genetics
S.E. Weyandt, Ronald A. Van Den Bussche, M.J. Hamilton, David M. Leslie Jr.
2005, Journal of Mammalogy (86) 1136-1143
The Ozark big-eared bat (Corynorhinus townsendii ingens) is federally listed as endangered and is found in only a small number of caves in eastern Oklahoma and northwestern Arkansas. Previous studies suggested site fidelity of females to maternity caves; however, males are solitary most of the year, and thus specific information...
Molecular identification of a papilloma virus from cutaneous lesions of captive and free-ranging Florida manatees
R.A. Woodruff, R. K. Bonde, J.A. Bonilla, C.H. Romero
2005, Journal of Wildlife Diseases (41) 437-441
Cutaneous papillomatous lesions were biopsied from three captive Florida manatees (Trichechus manatus latirostris) at Homosassa Springs State Wildlife Park (HSSWP), Homosassa, Florida, USA, and from six free-ranging Florida manatees from Crystal and Homosassa rivers, Florida. Total DNA extracted from these lesions was assayed for the presence of papilloma virus genomes...
Breeding ecology of the Puaiohi (Myadestes palmeri)
Thomas J. Snetsinger, Christina M. Hermann, Dawn E. Holmes, C. D. Hayward, Steven G. Fancy
2005, The Wilson Bulletin (117) 72-84
We studied the breeding ecology of the critically endangered Puaiohi (Myadestes palmeri), a poorly known Hawaiian thrush endemic to the island of Kauai. From 1996 through 1998, we monitored 96 active nests over the course of three breeding seasons. Mean clutch size was 2.0, and pairs produced an average...
Relationship of otolith strontium-to-calcium ratios and salinity: Experimental validation for juvenile salmonids
Christian E. Zimmerman
2005, Canadian Journal of Fisheries and Aquatic Sciences (62) 88-97
Analysis of otolith strontium (Sr) or strontium-to-calcium (Sr:Ca) ratios provides a powerful tool to reconstruct the chronology of migration among salinity environments for diadromous salmonids. Although use of this method has been validated by examination of known individuals and translocation experiments, it has never been validated under controlled experimental conditions....
Groundwater depletion: A global problem
Leonard F. Konikow, E. Kendy
2005, Hydrogeology Journal (13) 317-320
No abstract available....
Testing for evidence of maternal effects among individuals and populations of white crappie
D.B. Bunnell, M.A. Scantland, R.A. Stein
2005, Transactions of the American Fisheries Society (134) 607-619
For an increasing number of species, maternal characteristics have been correlated with the characteristics of their eggs or larvae at the individual level. Documenting these maternal effects at the population level, however, is uncommon. For white crappies Pomoxis annularis, we evaluated whether individual maternal effects on eggs existed and then...
Geology and tsunamigenic potential of submarine landslides in Santa Barbara Channel, Southern California
M. A. Fisher, W. R. Normark, H. Gary Greene, H.J. Lee, R. W. Sliter
2005, Marine Geology (224) 1-22
A large submarine landslide complex and four small landslides developed under the Santa Barbara Channel, suggesting a potential hazard from landslide-generated tsunamis. We integrate offshore stratigraphy and geologic structure, multibeam bathymetric information, and several kinds of seismic-reflection data to understand how and when the submarine landslides formed. Seismic-reflection data show...
Evaluation of current population indices for band-tailed pigeons
Michael L. Casazza, Julie L. Yee, Michael R. Miller, Dennis L. Orthmeyer, Daniel R. Yparraguirre, Robert L. Jarvis, Cory T. Overton
2005, Wildlife Society Bulletin (33) 606-615
There is no formal population survey specifically designed to index population abundance of band-tailed pigeons (Patagioenas fasciata) throughout their range. Data from the Breeding Bird Survey (BBS), Washington and Oregon Mineral-Site (WAORMS) surveys, and Washington Call Count (WACC) survey offer evidence of long-term population decline. We investigated the potential to...
Cambro-ordovician sea-level fluctuations and sequence boundaries: The missing record and the evolution of new taxa
O. Lehnert, J.F. Miller, Stephen A. Leslie, J.E. Repetski, Raymond L. Ethington
2005, Special Papers in Palaeontology 117-134
The evolution of early Palaeozoic conodont faunas shows a clear connection to sea-level changes. One way that this connection manifests itself is that thick successions of carbonates are missing beneath major sequence boundaries due to karstification and erosion. From this observation arises the question of how many taxa have been...
Fuel reduction and coarse woody debris dynamics with early season and late season prescribed fire in a Sierra Nevada mixed conifer forest
E. E. Knapp, Jon E. Keeley, E. A. Ballenger, T. J. Brennan
2005, Forest Ecology and Management (208) 383-397
Fire exclusion has led to an unnatural accumulation and greater spatial continuity of organic material on the ground in many forests. This material serves both as potential fuel for forest fires and habitat for a large array of forest species. Managers must balance fuel reduction to reduce wildfire hazard with...
Laser ablation ICP-MS profiling and semiquantitative determination of trace element concentrations in desert torotise shells: Documenting the uptake of elemental toxicants
M. D. Seltzer, Kristin H. Berry
2005, Science of the Total Environment (339) 253-265
The outer keratin layer (scute) of desert tortoise shells consists of incrementally grown laminae in which various bioaccumulated trace elements are sequestered during scute deposition. Laser ablation ICP-MS examination of laminae in scutes of dead tortoises revealed patterns of trace elemental distribution from which the chronology of elemental uptake can be inferred. These patterns...
Climatic and topographic controls on the style and timing of Late Quaternary glaciation throughout Tibet and the Himalaya defined by 10Be cosmogenic radionuclide surface exposure dating
L.A. Owen, R.C. Finkel, P.L. Barnard, Ma Haizhou, K. Asahi, M.W. Caffee, E. Derbyshire
2005, Quaternary Science Reviews (24) 1391-1411
Temporal and spatial changes in glacier cover throughout the Late Quaternary in Tibet and the bordering mountains are poorly defined because of the inaccessibility and vastness of the region, and the lack of numerical dating. To help reconstruct the timing and extent of glaciation throughout Tibet and the bordering mountains,...
