Estimating survival probabilities of unmarked dependent young when detection is imperfect
P.M. Lukacs, V.J. Dreitz, F.L. Knopf, K.P. Burnham
2004, The Condor (106) 926-931
We present a capture–recapture modeling approach to the estimation of survival probability of dependent chicks when only the attending adult bird is marked. The model requires that the bird's nest is found prior to hatching and that the number of eggs that hatch are counted. Subsequent data are sightings of...
Ecological impacts of wheat seeding after a Sierra Nevada wildfire
Jon E. Keeley
2004, International Journal of Wildland Fire (13) 73-78
The Highway Fire burned 1680 ha of mixed ponderosa pine–oak–chaparral in the newly created Giant Sequoia National Monument and the adjacent Sequoia National Forest of Fresno County, California in August 2001. The USDA Forest Service Burned Area Emergency Rehabilitation (BAER) program recommended that portions of the burned forest be seeded...
Monitoring giant garter snakes in the Natomas Basin: 2003 results
G.D. Wylie, Michael L. Casazza, L.L. Martin
2004, Report
No abstract available at this time...
Spatiotemporal predictability of schooling and nonschooling prey of Pigeon Guillemots
Michael A. Litzow, John F. Piatt, Alisa A. Abookire, Suzann G. Speckman, Mayumi L. Arimitsu, Jared D. Figurski
2004, The Condor (106) 410-415
Low spatiotemporal variability in the abundance of nonschooling prey might allow Pigeon Guillemots (Cepphus columba) to maintain the high chick provisioning rates that are characteristic of the species. We tested predictions of this hypothesis with data collected with beach seines and scuba and hydroacoustic surveys in Kachemak Bay, Alaska, during...
Persistent organic pollutants in Alaskan murre (Uria spp.) eggs: Geographical, species, and temporal comparisons
Stacy S. Vander Pol, Paul R. Becker, John R. Kucklick, Rebecca S. Pugh, David G. Roseneau, Kristin S. Simac
2004, Environmental Science & Technology (38) 1305-1312
Concentrations of persistent organic pollutants (POPs) in eggs of common and thick-billed murres (Uria aalge and U. lomvia) from five Alaskan nesting colonies were dominated by 4,4‘-DDE, total polychlorinated biphenyls (ΣPCBs; 46 congeners comprised mainly of PCB congeners 153, 118, 138, 99, and 151), hexachlorobenzene (HCB), β-hexachlorocyclohexane...
Growth and collapse of Waianae volcano, Hawaii, as revealed by exploration of its submarine flanks
Michelle L. Coombs, David A. Clague, Gregory F. Moore, Brian L. Cousens
2004, Geochemistry, Geophysics, Geosystems (5)
Wai‘anae Volcano comprises the western half of O‘ahu Island, but until recently little was known about the submarine portion of this volcano. Seven new submersible dives, conducted in 2001 and 2002, and multibeam bathymetry offshore of Wai‘anae provide evidence pertaining to the overall growth of the volcano's edifice as well...
Use of the instream flow incremental methodology: Introduction to the special issue
Berton Lee Lamb, C. Sabaton, Y. Souchon
2004, Hydroécologie Appliquée (14) 1-7
No abstract available....
A video surveillence system for monitoring raptor nests in a temperate rainforest environment
S.B. Lewis, P. DeSimone, K. Titus, Mark R. Fuller
2004, Northwest Science (78) 70-74
No abstract available....
An animal location-based habitat suitability model for bighorn sheep and wild horses in Bighorn Canyon National Recreation Area and the Pryor Mountain Wild Horse Range, Montana, and Wyoming
Gary Wockner, Francis J. Singer, Kathryn A. Schoenecker
2004, Report, Bighorn sheep habitat studies, population dynamics, and population modeling in Bighorn Canyon National Recreation Area, Wyoming and Montana, 2000-2003 (Open-File Report 2004-1337)
The purpose of this habitat suitability model is to provide a tool that will help managers and researchers better manage bighorn sheep and wild horses in the Bighorn Canyon National Recreation Area (BICA) and Pryor Mountain Wild Horse Range (PMWHR). A concern in the management of the Pryor Mountain wild...
Bighorn sheep (Ovis canadensis) survivorship and habitat studies in Bighorn Canyon National Recreation Area and surrounding lands, Wyoming and Montana, 2000–2003
Kathryn A. Schoenecker, Francis J. Singer, Kayla A. Grams, James E. Roelle
2004, Report, Bighorn sheep habitat studies, population dynamics, and population modeling in Bighorn Canyon National Recreation Area, Wyoming and Montana, 2000-2003 (Open-File Report 2004-1337)
In the 1850s, bighorn sheep (Ovis canadensis) were numerous and distributed throughout the Bighorn and Pryor Mountains of Montana and Wyoming. After European settlement, bighorn sheep populations declined, and local extinctions occurred in much of their historic range in the western United States. The current bighorn sheep population of Bighorn...
Site fidelity, territory fidelity, and natal philopatry in Willow Flycatchers (Empidonax traillii)
James A. Sedgwick
2004, The Auk (121) 1103-1121
I investigated the causes and consequences of adult breeding-site fidelity, territory fidelity, and natal philopatry in Willow Flycatchers (Empidonax traillii) in southeastern Oregon over a 10-year period, testing the general hypothesis that fidelity and dispersal distances are influenced by previous breeding performance. Willow Flycatchers adhered to the generally observed tendencies...
Bryophytes from Simeonof Island in the Shumagin Islands, southwestern Alaska
Wilfred B. Schofield, Stephen S. Talbot, Sandra L. Talbot
2004, Journal of the Hattori Botanical Laboratory (95) 155-198
Simeonof Island is located south of the Alaska Peninsula in the hyperoceanic sector of the middle boreal subzone. We examined the bryoflora of Simeonof Island to determine species composition in an area where no previous collections had been reported. This field study was conducted in sites selected to represent the...
Spatial distribution of the largest rainfall‐runoff floods from basins between 2.6 and 26,000 km2 in the United States and Puerto Rico
Jim E. O'Connor, John E. Costa
2004, Water Resources Research (40)
We assess the spatial distribution of the largest rainfall‐generated streamflows from a database of 35,663 flow records composed of the largest 10% of annual peak flows from each of 14,815 U.S. Geological Survey stream gaging stations in the United States and Puerto Rico. High unit discharges (peak discharge per unit...
A biogeochemical comparison of two well-buffered catchments with contrasting histories of acid deposition
J. B. Shanley, P. Kram, J. Hruska, T.D. Bullen
2004, Water, Air, and Soil Pollution: Focus (4) 325-342
Much of the biogeochemical cycling research in catchments in the past 25 years has been driven by acid deposition research funding. This research has focused on vulnerable base-poor systems; catchments on alkaline lithologies have received little attention. In regions of high acid loadings, however, even well-buffered catchments are susceptible...
Use of simulated evaporation to assess the potential for scale formation during reverse osmosis desalination
G. F. Huff
2004, Desalination (160) 285-292
The tendency of solutes in input water to precipitate efficiency lowering scale deposits on the membranes of reverse osmosis (RO) desalination systems is an important factor in determining the suitability of input water for desalination. Simulated input water evaporation can be used as a technique to quantitatively assess the potential...
Hydrated states of MgSO4 at equatorial latiudes on Mars
W. C. Feldman, M. T. Mellon, S. Maurice, T.H. Prettyman, J.W. Carey, D. T. Vaniman, D.L. Bish, C.I. Fialips, S.J. Chipera, J.S. Kargel, R.C. Elphic, H.O. Funsten, D. J. Lawrence, R.L. Tokar
2004, Geophysical Research Letters (31)
The stability of water ice, epsomite, and hexahydrite to loss of H 2O molecules to the atmosphere at equatorial latitudes of Mars was studied to determine their potential contributions to the measured abundance of water-equivalent hydrogen (WEH). Calculation of the relative humidity based on estimates of yearly averages of water-vapor...
Hydrologic aspects of marsh ponds during winter on the Gulf Coast Chenier Plain, USA: Effects of structural marsh management
F. Bolduc, A. D. Afton
2004, Marine Ecology Progress Series (266) 35-42
The hydrology of marsh ponds influences aquatic invertebrate and waterbird communities. Hydrologic variables in marsh ponds of the Gulf Coast Chenier Plain are potentially affected by structural marsh management (SMM: levees, water control structures and impoundments) that has been implemented since the 1950s. Assuming that SMM restricts tidal flows and...
The relationship between gorgonian coral (Cnidaria: Gorgonacea) diseases and African dust storms
J. R. Weir-Brush, V.H. Garrison, G.W. Smith, E.A. Shinn
2004, Aerobiologia (20) 119-126
The number of reports of coral diseases has increased throughout the world in the last 20 years. Aspergillosis, which primarily affects Gorgonia ventalina and G. flabellum, is one of the few diseases to be characterized. This disease is caused by Aspergillus sydowii, a terrestrial fungus with a worldwide distribution. Upon...
Reproductive status of western mosquitofish inhabiting selenium- contaminated waters in the Grassland Water District, Merced County, California
M. K. Saiki, B.A. Martin, T.W. May
2004, Archives of Environmental Contamination and Toxicology (47) 363-369
This study was implemented to determine if western mosquitofish (Gambusia affinis) populations in the Grassland Water District suffer from impaired reproduction because of seleniferous inflows of agricultural drainwater from the Grassland Bypass Project. During June to July 2001, laboratory trials with pregnant female fish collected from two seleniferous...
Geochemical cycles in sediments deposited on the slopes of the Guaymas and Carmen Basins of the Gulf of California over the last 180 years
W. Dean, C. Pride, R. Thunell
2004, Quaternary Science Reviews (23) 1817-1833
Sediments deposited on the slopes of the Guaymas and Carmen Basins in the central Gulf of California were recovered in two box cores. Q-mode factor analyses identified detrital-clastic, carbonate, and redox associations in the elemental composition of these sediments. The detrital-clastic fraction appears to contain two source components, a more...
A comparison of three fecal steroid metabolites for pregnancy detection used with single sampling in bighorn sheep (Ovis canadensis)
K.A. Schoenecker, R.O. Lyda, J. Kirkpatrick
2004, Journal of Wildlife Diseases (40) 273-281
We compared three fecal steroid metabolite assays for their usefulness in detecting pregnancy among free-ranging Rocky Mountain bighorn sheep (Ovis canadensis canadensis) from Bighorn Canyon National Recreation Area, Wyoming and Montana (USA) and captive bighorn ewes at ZooMontana in Billings, Montana. Fecal samples were collected from 11 free-ranging, radio-collared bighorn...
A review of models and micrometeorological methods used to estimate wetland evapotranspiration
J.Z. Drexler, R.L. Snyder, D. Spano, U.K.T. Paw
2004, Hydrological Processes (18) 2071-2101
Within the past decade or so, the accuracy of evapotranspiration (ET) estimates has improved due to new and increasingly sophisticated methods. Yet despite a plethora of choices concerning methods, estimation of wetland ET remains insufficiently characterized due to the complexity of surface characteristics and the diversity of wetland types. In...
Factors influencing occupancy of nest cavities in recently burned forests
V.A. Saab, J. Dudley, W.L. Thompson
2004, Conference Paper, Condor
Recently burned forests in western North America provide nesting habitat for many species of cavity-nesting birds. However, little is understood about the time frame and the variables affecting occupancy of postfire habitats by these birds. We studied factors influencing the occupancy and reuse of nest cavities from 1-7 years after...
Recombinant F1-V fusion protein protects black-footed ferrets (Mustela nigripes) against virulent Yersinia pestis infection
Tonie E. Rocke, J. Mencher, Susan Smith, A. M. Friedlander, G.P. Andrews, L. A. Baeten
2004, Journal of Zoo and Wildlife Medicine (35) 142-146
Black-footed ferrets (Mustela nigripes) are highly susceptible to sylvatic plague, caused by the bacterium Yersinia pestis, and this disease has severely hampered efforts to restore ferrets to their historic range. A study was conducted to assess the efficacy of vaccination of black-footed ferrets against plague using a recombinant protein vaccine,...
A study of possible ground-motion amplification at the Coyote Lake Dam, California
D.M. Boore, V.M. Graizer, J. C. Tinsley, A.F. Shakal
2004, Bulletin of the Seismological Society of America (94) 1327-1342
The abutment site at the Coyote Lake Dam recorded an unusually large peak acceleration of 1.29g during the 1984 Morgan Hill earthquake. Following this earthquake another strong-motion station was installed about 700 m downstream from the abutment station. We study all events (seven) recorded on these stations, using ratios of...
