Renesting by dusky Canada geese on the Copper River Delta, Alaska
Thomas F. Fondell, J. Barry Grand, David A.W. Miller, R. Michael Anthony
2006, Journal of Wildlife Management (70) 955-964
The population of dusky Canada geese (Branta canadensis occidentalis; hereafter duskies) breeding on the Copper River Delta (CRD), Alaska, USA, has been in long-term decline, largely as a result of reduced productivity. Estimates of renesting rates by duskies may be useful for adjusting estimates of the size of the breeding...
Persistent organic pollutants in Alaskan ringed seal (Phoca hispida) and walrus (Odobenus rosmarus) blubber
John R. Kucklick, Margaret M. Krahn, Paul R. Becker, Barbara J. Porter, Michele M. Schantz, Geoffrey S. York, Todd M. O'Hara, Stephen A. Wise
2006, Journal of Environmental Monitoring (8) 848-854
Since 1987, the Alaska Marine Mammal Tissue Archival Project (AMMTAP) has collected tissues from 18 marine mammal species. Specimens are archived in the National Institute of Standards and Technology's National Biomonitoring Specimen Bank (NIST-NBSB). AMMTAP has collected blubber, liver and/or kidney specimens from a number of ringed seals (Phoca hispida)...
In situ growth of juvenile zebra mussels in a regulated stream
John R. P. French III, S. Jerrine Nichols, Jaquelyn M. Craig, Jeffery D. Allen, M. Glen Black
2006, Journal of Freshwater Ecology (21) 25-30
We investigated the in situ growth of juvenile zebra mussels (Dreissena polymorpha) in a reach of the Huron River (southeast Michigan) below a dam with a control gate that regulates water levels. Growth was significantly different among sample dates over a five-month-long monitoring season. Mean growth of mussels generally decreased...
Molecular phylogeny of Babesia poelea from brown boobies (Sula leucogaster) from Johnston Atoll, Central Pacific
Michael J. Yabsley, Thierry M. Work, Robert A. Rameyer
2006, Journal of Parasitology (92) 423-425
The phylogenetic relationship of avian Babesia with other piroplasms remains unclear, mainly because of a lack of objective criteria such as molecular phylogenetics. In this study, our objective was to sequence the entire 18S, ITS-1, 5.8S, and ITS-2 regions of the rRNA gene and partial ß-tubulin gene of B. poelea,...
Triazines
Timothy S. Gross, R. Heath Rauschenberger
D.O. Norris, J.A. Carr, editor(s)
2006, Book chapter, Endocrine Disruption: Biological Bases for Health Effects in Wildlife and Humans
Abstract not supplied at this time...
Modeling approaches in avian conservation and the role of field biologists
Steven R. Beissinger, J. R. Walters, D.G. Catanzaro, Kimberly G. Smith, J.B. Dunning, Susan M. Haig, Barry Noon, Bradley Stith
2006, Ornithological Monographs (59) iii-56
This review grew out of our realization that models play an increasingly important role in conservation but are rarely used in the research of most avian biologists. Modelers are creating models that are more complex and mechanistic and that can incorporate more of the knowledge acquired by field biologists. Such...
Ice sheets and sea level: response
Jonathan T. Overpeck, Bette L. Otto-Bliesner, Gifford H. Miller, Richard B. Alley, Daniel R. Muhs, Shawn J. Marshall
2006, Science (313) 1044-1045
Reply to the discussion by F. Lagroix and S.K. Banerjee of "Geochemical evidence for the origin of late Quaternary loess in central Alaska"
Daniel R. Muhs, James R. Budahn
2006, Canadian Journal of Earth Sciences (43) 1891-1895
Geochemical data for mercury, methylmercury, and other constituents in sediments from Englebright Lake, California, 2002
Charles N. Alpers, Michael P. Hunerlach, Mark C. Marvin-DePasquale, Ronald C. Antweiler, Brenda K. Lasorsa, John F. De Wild, Noah P. Snyder
2006, Data Series 151
This report presents geochemical data from two 2002 sampling campaigns conducted in Englebright Lake on the Yuba River in northern California. A deep coring campaign was done in May-June 2002 and a shallow sampling campaign was completed in October 2002. This work assessed the chemical composition of material deposited in...
Role of multidecadal climate variability in a range extension of pinyon pine
Stephen T. Gray, Julio L. Betancourt, Stephen T. Jackson, Robert G. Eddy
2006, Ecology (87) 1124-1130
Evidence from woodrat middens and tree rings at Dutch John Mountain (DJM) in northeastern Utah reveal spatiotemporal patterns of pinyon pine (Pinus edulis Engelm.) colonization and expansion in the past millennium. The DJM population, a northern outpost of pinyon, was established by long-distance dispersal (~40 km). Growth of this isolate...
Predicting woodrat (Neotoma) responses to anthropogenic warming from studies of the palaeomidden record
Felisa A. Smith, Julio L. Betancourt
2006, Journal of Biogeography (33) 2061-2076
Aim The influence of anthropogenic climate change on organisms is an area of great scientific concern. Increasingly there is recognition that abrupt climate transitions have occurred over the late Quaternary; studies of these shifts may yield insights into likely biotic responses to contemporary warming. Here, we review research undertaken...
Late Quaternary vegetation and climate history of a perennial river canyon in the Rīo Salado basin (22°S) of Northern Chile
Claudio Latorre, Julio L. Betancourt, Mary T.K. Arroyo
2006, Quaternary Research (65) 450-466
Plant macrofossils from 33 rodent middens sampled at three sites between 2910 and 3150 m elevation in the main canyon of the Rīo Salado, northern Chile, yield a unique record of vegetation and climate over the past 22,000 cal yr BP. Presence of low-elevation Prepuna taxa throughout the record suggests...
Status of Amphibians in California and Arizona
G. M. Fellers, Robert N. Fisher, C.R. Schwalbe
2006, WERC Fact Sheet -
No abstract available at this time...
Classification tree and minimum-volume ellipsoid analyses of the distribution of ponderosa pine in the western USA
Jodi R. Norris, Stephen T. Jackson, Julio L. Betancourt
2006, Journal of Biogeography (33) 342-360
Aim? Ponderosa pine (Pinus ponderosa Douglas ex Lawson & C. Lawson) is an economically and ecologically important conifer that has a wide geographic range in the western USA, but is mostly absent from the geographic centre of its distribution - the Great Basin and adjoining mountain ranges. Much of its...
Bacterial community structure in the hyperarid core of the Atacama Desert, Chile
Kevin P. Drees, Julia W. Neilson, Julio L. Betancourt, Jay Quade, David A. Henderson, Barry M. Pryor, Raina M. Maier
2006, Applied and Environmental Microbiology (72) 7902-7908
Soils from the hyperarid Atacama Desert of northern Chile were sampled along an east-west elevational transect (23.75 to 24.70°S) through the driest sector to compare the relative structure of bacterial communities. Analysis of denaturing gradient gel electrophoresis (DGGE) profiles from each of the samples revealed that microbial communities from the...
A 36,000-yr vegetation history from the Peloncillo Mountains, southeastern Arizona, USA
Camille A. Holmgren, Julio L. Betancourt, Kate A. Rylander
2006, Palaeogeography, Palaeoclimatology, Palaeoecology (240) 405-422
Basaltic thermals and Subplinian plumes: Constraints from acoustic measurements at Shishaldin volcano, Alaska
Sylvie Vergniolle, Jacqueline Caplan-Auerbach
2006, Bulletin of Volcanology (68) 611-630
The 1999 basaltic eruption of Shishaldin volcano (Alaska, USA) included both Strombolian and Subplinian activity, as well as a “pre-Subplinian” phase interpreted as the local coalescence within a long foam in the conduit. Although few visual observations were made of the eruption, a great deal of information regarding gas velocity,...
Identifying suitable sites for Florida panther reintroduction
Cindy A. Thatcher, Frank T. van Manen, Joseph D. Clark
2006, Journal of Wildlife Management (70) 752-763
A major objective of the 1995 Florida Panther (Puma concolor cory) Recovery Plan is the establishment of 2 additional panther populations within the historic range. Our goal was to identify prospective sites for Florida panther reintroduction within the historic range based on quantitative landscape assessments. First, we delineated 86 panther...
Growth and sustainability of black bears at White River National Wildlife Refuge, Arkansas
Joseph D. Clark, R. Eastridge
2006, Journal of Wildlife Management (70) 1094-1101
The black bear (Ursus americanus) population at White River National Wildlife Refuge is isolated and genetically distinct, but hunting occurs adjacent to refuge boundaries and females with cubs are removed annually for a reintroduction project. We trapped and radiotracked bears to determine level of exploitation and compare methods for estimating...
Genetic analyses of captive Alala (Corvus hawaiiensis) using AFLP analyses
Susan I. Jarvi, Kiara R. Bianchi
2006, Open-File Report 2006-1349
Population level studies of genetic diversity can provide information about population structure, individual genetic distinctiveness and former population size. They are especially important for rare and threatened species like the Alala, where they can be used to assess extinction risks and evolutionary potential. In an ideal situation multiple methods should...
FGDC Digital Cartographic Standard for Geologic Map Symbolization (PostScript Implementation)
U.S. Geological Survey
2006, Techniques and Methods 11-A2
PLEASE NOTE: This now-approved 'FGDC Digital Cartographic Standard for Geologic Map Symbolization (PostScript Implementation)' officially supercedes its earlier (2000) Public Review Draft version (see 'Earlier Versions of the Standard' below). In August 2006, the Digital Cartographic Standard for Geologic Map Symbolization was officially endorsed by the Federal Geographic Data Committee...
[Book review] Donnelly M.A., Crothers B., Guyer C, Wake M.H., White M.E, (Eds.). Ecology and Evolution in the Tropics ? A Herpetological Perspective, University of Chicago Press, 2005, Pages 675, Price: $45.00, ISBN 0-226-15658-3
R.P. Reynolds
2006, Biological Conservation (127) 128
Site occupancy models with heterogeneous detection probabilities
J. Andrew Royle
2006, Biometrics (62) 97-102
Models for estimating the probability of occurrence of a species in the presence of imperfect detection are important in many ecological disciplines. In these ?site occupancy? models, the possibility of heterogeneity in detection probabilities among sites must be considered because variation in abundance (and other factors) among sampled sites...
Optimal regeneration planning for old-growth forest: addressing scientific uncertainty in endangered species recovery through adaptive management
C. T. Moore, M.J. Conroy
2006, Forest Science (52) 155-172
Stochastic and structural uncertainties about forest dynamics present challenges in the management of ephemeral habitat conditions for endangered forest species. Maintaining critical foraging and breeding habitat for the endangered red-cockaded woodpecker (Picoides borealis) requires an uninterrupted supply of old-growth forest. We constructed and optimized a dynamic forest growth...
Importance of riparian forests in urban catchments contingent on sediment and hydrologic regimes
A.H. Roy, Mary C. Freeman, B. J. Freeman, S.J. Wenger, J.L. Meyer, W.E. Ensign
2006, Environmental Management (47) 523-539
Forested riparian corridors are thought to minimize impacts of landscape disturbance on stream ecosystems; yet, the effectiveness of streamside forests in mitigating disturbance in urbanizing catchments is unknown. We expected that riparian forests would provide minimal benefits for fish assemblages in streams that are highly impaired by sediment or hydrologic...
