Spatial structure in the diet of imperial eagles Aquila heliaca in Kazakhstan
T.E. Katzner, E. A. Bragin, S.T. Knick, A.T. Smith
2006, Journal of Avian Biology (37) 594-600
We evaluated the relationship between spatial variability in prey and food habits of eastern imperial eagles Aquila heliaca at a 90,000 ha national nature reserve in north-central Kazakhstan. Eagle diet varied greatly within the population and the spatial structure of eagle diet within the population varied according to the scale...
Stakeholder opinions regarding management of Conservation Reserve Program lands to address environmental and wildlife issues
M.W. Vandever, D.L. Hoag
2006, Human Dimensions of Wildlife (11) 147-149
No abstract available....
Trends of chlorinated organic contaminants in Great Lakes trout and walleye from 1970-1998
J.P. Hickey, S.A. Batterman, S.M. Chernyak
2006, Archives of Environmental Contamination and Toxicology (50) 97-110
Levels of chlorinated organic contaminants in predator fish have been monitored annually in each of the Great Lakes since the 1970s. This article updates earlier reports with data from 1991 to 1998 for lake trout (Salvelinus namaycush) and (Lake Erie only) walleye (Sander vitreus) to provide a record that now...
Long-term surface fuel accumulation in burned and unburned mixed-conifer forests of the central and southern Sierra Nevada, CA (USA)
M.B. Keifer, J. W. van Wagtendonk, M. Buhler
2006, Fire Ecology (2) 53-72
Summary of Conclusions and Recommendations: The levels of mercury contamination found in freshwater fish in Sweden and Finland are similar to those found in such fish in the United States. On the other hand, fish consumption in this country is regarded as generally somewhat less...
Response of fishes to floodplain connectivity during and following a 500-year flood event in the unimpounded upper Mississippi River
V.A. Barko, D.P. Herzog, M. T. O’Connell
2006, Wetlands (26) 244-257
We examined data collected on fish assemblage structure among three differing floodplain types (broad, moderate, and narrow) during the 1993 flood in the unimpounded reach of the upper Mississippi River. This 500 year flood event provided a unique opportunity to investigate fish-floodplain function because the main river channel is otherwise...
Use of the oligochaete, Lumbriculus variegatus, as a prey organism for toxicant exposure of fish through the diet
D.R. Mount, T.L. Highland, V.R. Mattson, T.D. Dawson, K.G. Lott, C.G. Ingersoll
2006, Environmental Toxicology and Chemistry (25) 2760-2767
The oligochaete, Lumbriculus variegatus, has several characteristics that make it desirable as a prey organism for conducting dietary exposure studies with fish. We conducted 21- and 30-d experiments with young fathead minnows (Pimephales promelas) and rainbow trout (Oncorhynchus mykiss), respectively, to determine whether a diet consisting solely of L. variegatus...
Insect visitation and pollen deposition in an invaded prairie plant community
D.L. Larson, R.A. Royer, M.R. Royer
2006, Biological Conservation (130) 148-159
Relationship between quartz trace elements and SEM-Cathodoluminescence textures revealed using WDS mapping techniques
H.A. Lowers, B.G. Rusk
2006, Conference Paper, Microscopy and Microanalysis
[No abstract available]...
Evaluating red-cockaded woodpeckers for exposure to West Nile Virus and blood parasites
Robert J. Dusek, D. Richardson, Kristina F. Egstad, Dennis M. Heisey
2006, Southeastern Naturalist (5) 561-565
A marked decline in the Picoides borealis (Red-cockaded Woodpecker [RCW]) population at Noxubee National Wildlife Refuge, MS, was observed in 2002. Demographic changes - including absence of hatch-year birds, decreases in size of known groups, and loss of known groups-were identified during annual fall surveys and are uncharacteristic of RCW...
Populations and habitat relationships of Piute ground squirrels in southwest Idaho
Karen Steenhof, Eric Yensen, Michael N. Kochert, K. Gage
2006, Western North American Naturalist (66) 482-491
Piute ground squirrels (Spermophilus mollis idahoensis) are normally above ground from late January until late June or early July in the Snake River Birds of Prey National Conservation Area in southwestern Idaho. In 2002 they were rarely seen above ground after early May. Because of the ecological importance of ground...
Temporal organization of an anuran acoustic community in a Taiwanese subtropical forest
M.-Y. Hsu, Y.-C. Kam, G. M. Fellers
2006, Journal of Zoology (269) 331-339
We recorded anuran vocalizations in each of four habitats at Lien Hua Chih Field Station, Taiwan, between July 2000 and July 2001. For each 27 biweekly sample, eight recorders taped calls for 1 min out of every 11 between the hours of 17:00 and 07:00. We obtained 11 481 recordings...
Environmental contaminants in fish and their associated risk to piscivorous wildlife in the Yukon River Basin, Alaska
J.E. Hinck, C. J. Schmitt, K. R. Echols, T.W. May, C.E. Orazio, D. E. Tillitt
2006, Archives of Environmental Contamination and Toxicology (51) 661-672
Organochlorine chemical residues and elemental contaminants were measured in northern pike (Esox lucius), longnose sucker (Catostomus catostomus), and burbot (Lota lota) from 10 sites in the Yukon River Basin (YRB) during 2002. Contaminant concentrations were compared to historical YRB data and to toxicity thresholds for fish and piscivorous wildlife from...
Abrupt transitions during sustained explosive eruptions: Examples from the 1912 eruption of Novarupta, Alaska
N.K. Adams, Bruce F. Houghton, W. Hildreth
2006, Bulletin of Volcanology (69) 189-206
Plinian/ignimbrite activity stopped briefly and abruptly 16 and 45 h after commencement of the 1912 Novarupta eruption defining three episodes of explosive volcanism before finally giving way after 60 h to effusion of lava domes. We focus here on the processes leading to the termination of the second and third...
High efficiency of meiotic gynogenesis in sea lamprey Petromyzon marinus
J. Rinchard, K. Dabrowski, M. #NAME? Garcia-Abiado
2006, Journal of Experimental Zoology Part B: Molecular and Developmental Evolution (306) 521-527
Induction of androgenesis and gynogenesis by applying a pressure (PS) or heat shock (HS) to double the haploid chromosomal set results in progenies possessing only chromosomes from a single parent. This has never been accomplished in representatives of Agnatha. The objective of this study was to induce gynogenesis and androgenesis...
Wetland environmental conditions associated with the risk of avian cholera outbreaks and the abundance of Pasteurella multocida
Julie A. Blanchong, Michael D. Samuel, Diana R. Goldberg, Daniel J. Shadduck, L. H. Creekmore
2006, Journal of Wildlife Management (70) 54-60
Avian cholera is a significant infectious disease affecting waterfowl across North America and occurs worldwide among various avian species. Despite the importance of this disease, little is known about the factors that cause avian cholera outbreaks and what management strategies might be used to reduce disease mortality. Previous studies indicated...
Level 1 Baseline Water Qaulity Report for the Klmath Network: Lava Beds National Monument, Lassen Volcanic National Park and Oregon Caves National Monument - 2005
C.R. Currens, Mary Ann Madej, H. Ambrose
2006, Report
No abstract available at this time...
North American prairie wetlands are important nonforested land-based carbon storage sites
N.H. Euliss Jr., R.A. Gleason, A. Olness, R.L. McDougal, H.R. Murkin, R.D. Robarts, R.A. Bourbonniere, B.G. Warner
2006, Science of the Total Environment (36) 179-188
We evaluated the potential of prairie wetlands in North America as carbon sinks. Agricultural conversion has resulted in the average loss of 10.1 Mg ha- 1 of soil organic carbon on over 16 million ha of wetlands in this region. Wetland restoration has potential to sequester 378 Tg of organic...
Regional Kendall test for trend
D.R. Helsel, L.M. Frans
2006, Environmental Science & Technology (40) 4066-4073
Trends in environmental variables are often investigated within a study region at more than one site. At each site, a trend analysis determines whether a trend has occurred. Yet often also of interest is whether a consistent trend is evident throughout the entire region. This paper adapts the Seasonal Kendall...
Filling in the gaps: Modelling native species richness and invasions using spatially incomplete data
C. S. Jarnevich, T.J. Stohlgren, D. Barnett, J. Kartesz
2006, Diversity and Distributions (12) 511-520
Detailed knowledge of patterns of native species richness, an important component of biodiversity, and non-native species invasions is often lacking even though this knowledge is essential to conservation efforts. However, we cannot afford to wait for complete information on the distribution and abundance of native and harmful invasive species. Using...
Sampling strategies for volatile organic compounds at three karst springs in Tennessee
S.D. Williams, W.J. Wolfe, J.J. Farmer
2006, Ground Water Monitoring and Remediation (26) 53-62
The influence of different sampling strategies on characterizing volatile organic compound (VOC) concentrations and estimating VOC loads was evaluated at three karst springs in Tennessee. During a 6-month period, water samples for VOC analyses were collected weekly at all three springs and as frequently as every 20 min during storms...
Modelling and understanding volcanic processes using high-quality seismological data
Bernard A. Chouet
2006, Géosciences (2006) 56-63
At an active volcano, Very-Long-Period (VLP) seismicity (with typical periods in the range 2-100 s) reflects pressure fluctuations resulting from unsteady mass transport in the sub-surface plumbing system, and hence provides a glimpse of the internal dynamics of the volcanic edifice. Understanding the fundamental fluid-flow mechanisms involved in the...
The Conservation Reserve Program: Planting for the future
Skip Hyberg, Arthur Allen
2006, Fact Sheet 2006-3078
Proceedings are now available from a scientific and technical forum held to review ongoing and planned research, identify lessons learned, and determine future research needs for the purpose of developing a rigorous scientific basis for future CRP policy discussions....
Tamarisk control, water salvage, and wildlife habitat restoration along rivers in the western United States
Patrick B. Shafroth
2006, Fact Sheet 2006-3071
In the latter part of the 19th century, species of the nonnative shrub tamarisk (also called saltcedar; for example, Tamarix ramosissima, T. chinensis) were introduced to the United States for use as ornamental plants for erosion control. By 1877, some naturalized populations had become established, and by the 1960s, tamarisk...
Interferometric synthetic aperture radar: Building tomorrow's tools today
Zhong Lu
2006, Alaska Satellite Facility News and Notes (15) 12-14
A synthetic aperture radar (SAR) system transmits electromagnetic (EM) waves at a wavelength that can range from a few millimeters to tens of centimeters. The radar wave propagates through the atmosphere and interacts with the Earth’s surface. Part of the energy is reflected back to the SAR system and recorded....
Landscape Assessment: Ground measure of severity, the Composite Burn Index; and Remote sensing of severity, the Normalized Burn Ratio
C.H. Key, N.C. Benson
2006, Report, FIREMON: Fire Effects Monitoring and Inventory System.
Abstract has not been submitted...
