Mapping South San Francisco Bay's seabed diversity for use in wetland restoration planning
Theresa A. Fregoso, B. Jaffe, G. Rathwell, W. Collins, K. Rhynas, V. Tomlin, S. Sullivan
2006, Conference Paper
In an effort to understand the role of sediment of South San Francisco Bay (South Bay) salt ponds, an acoustic seabed classification was performed with the condition of over two hundred sediment samples. The success of the large-scale tidal wetland restoration of up to 15,000 acres of South Bay partly...
Assessing vaccination as a control strategy in an ongoing epidemic: Bovine tuberculosis in African buffalo
Paul C. Cross, Wayne M. Getz
2006, Ecological Modelling (196) 494-504
Bovine tuberculosis (BTB) is an exotic disease invading the buffalo population (Syncerus caffer) of the Kruger National Park (KNP), South Africa. We used a sex and age-structured epidemiological model to assess the effectiveness of a vaccination program and define important research directions. The model allows for dispersal between a focal...
Natural glide slab avalanches, Glacier National Park, USA: A unique hazard and forecasting challenge
Blase Reardon, Daniel B. Fagre, Mark Dundas, Chris Lundy
2006, Conference Paper, Proceedings of 2006 International Snow Science Workshop
In a museum of avalanche phenomena, glide cracks and glide avalanches might be housed in the “strange but true” section. These oddities are uncommon in most snow climates and tend to be isolated to specific terrain features such as bedrock slabs. Many glide cracks never result in avalanches, and when...
Overview of selected surrogate technologies for continuous suspended-sediment monitoring
J. R. Gray, J. W. Gartner
2006, Conference Paper, Proceedings of the Eighth Federal Interagency Sedimentation Conference (8thFISC), April2-6, 2006, Reno, NV, USA
Surrogate technologies for inferring selected characteristics of suspended sediments in surface waters are being tested by the U.S. Geological Survey and several partners with the ultimate goal of augmenting or replacing traditional monitoring methods. Optical properties of water such as turbidity and optical backscatter are the most commonly used surrogates...
Exploration review
D.R. Wilburn
2006, Mining Engineering (58) 37-47
This summary of international mineral exploration activities for the year 2005 draws upon available information from literature, industry and U.S. Geological Survey (USGS) specialists. It provides data on exploration budgets by global region and mineral commodity and identifies significant mineral discoveries and exploration target areas. It also discusses government programs...
Highly Pathogenic Avian Influenza Early Detection Data System (HEDDS)
Robert Worrest, F. Joshua Dein
2006, Report
HEDDS offers a unique opportunity for multiagency cooperation for data sharing and visualization....
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...
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...
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...
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...
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...
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...
Combining multistate capture-recapture data with tag recoveries to estimate demographic parameters
W. L. Kendall, P.B. Conn, J.E. Hines
2006, Ecology (87) 169-177
Matrix population models that allow an animal to occupy more than one state over time are important tools for population and evolutionary ecologists. Definition of state can vary, including location for metapopulation models and breeding state for life history models. For populations whose members can be marked and...
Fish-assemblage variation between geologically defined regions and across a longitudinal gradient in the Monkey River Basin, Belize
P.C. Esselman, Mary C. Freeman, C. M. Pringle
2006, Journal of the North American Benthological Society (25) 142-156
Linkages between geology and fish assemblages have been inferred in many regions throughout the world, but no studies have yet investigated whether fish assemblages differ across geologies in Mesoamerica. The goals of our study were to: 1) compare physicochemical conditions and fish-assemblage structure across 2 geologic types in headwaters of...
Generalized site occupancy models allowing for false positive and false negative errors
J. Andrew Royle, W.A. Link
2006, Ecology (87) 835-841
Site occupancy models have been developed that allow for imperfect species detection or ?false negative? observations. Such models have become widely adopted in surveys of many taxa. The most fundamental assumption underlying these models is that ?false positive? errors are not possible. That is, one cannot detect a...
Surface elevation dynamics in vegetated Spartina marshes versus unvegetated tidal ponds along the mid-Atlantic coast, USA, with implications to waterbirds
R. Michael Erwin, Donald R. Cahoon, Diann J. Prosser, Geoffrey Sanders, Philippe Hensel
2006, Estuaries and Coasts (29) 96-106
Mid Atlantic coastal salt marshes contain a matrix of vegetation diversified by tidal pools, pannes, and creeks, providing habitats of varying importance to many species of breeding, migrating, and wintering waterbirds. We hypothesized that changes in marsh elevation were not sufficient to keep pace with those of sea level in...
Estimating species richness and accumulation by modeling species occurrence and detectability
R.M. Dorazio, J. Andrew Royle, B. Soderstrom, A. Glimskarc
2006, Ecology (87) 842-854
A statistical model is developed for estimating species richness and accumulation by formulating these community-level attributes as functions of model-based estimators of species occurrence while accounting for imperfect detection of individual species. The model requires a sampling protocol wherein repeated observations are made at a collection of sample locations...
Comparative dynamics of avian communities across edges and interiors of North American ecoregions
K.K. Karanth, J.D. Nichols, J.R. Sauer, J.E. Hines
2006, Journal of Biogeography (33) 674-682
Aim Based on a priori hypotheses, we developed predictions about how avian communities might differ at the edges vs. interiors of ecoregions. Specifically, we predicted lower species richness and greater local turnover and extinction probabilities for regional edges. We tested these predictions using North American Breeding Bird...
A hierarchical model for regional analysis of population change using Christmas Bird Count data, with application to the American Black Duck
W.A. Link, J.R. Sauer, D.K. Niven
2006, Condor (108) 13-24
Analysis of Christmas Bird Count (CBC) data is complicated by the need to account for variation in effort on counts and to provide summaries over large geographic regions. We describe a hierarchical model for analysis of population change using CBC data that addresses these needs. The effect of...
Population trajectory of burrowing owls (Athene cunicularia) in eastern Washington
C.J. Conway, K.L. Pardieck
2006, Northwest Science (80) 292-297
Anecdotal evidence suggests that burrowing owls have declined in Washington. The Washington Department of Fish and Wildlife is currently conducting a status review for burrowing owls which will help determine whether they should be listed as threatened or endangered in the state. To provide insights into the current...
Comparing protein and energy status of winter-fed white-tailed deer
B.D. Page, H.B. Underwood
2006, Wildlife Society Bulletin (34) 716-724
Although nutritional status in response to controlled feeding trials has been extensively studied in captive white-tailed deer (Odocoileus virginianus), there remains a considerable gap in understanding the influence of variable supplemental feeding protocols on free-ranging deer. Consequently, across the northern portion of the white-tailed deer range, numerous property managers...
Multistate survival models and their extensions in Program MARK
Gary C. White, W. L. Kendall, R. J. Barker
2006, Journal of Wildlife Management (70) 1521-1529
Program MARK provides .100 models for the estimation of population parameters from mark?encounter data. The multistate model of Brownie et al. (1993) and Hestbeck et al. (1991) allows animals to move between states with a probability of transition. The simplest multistate model is an extension of the Cormack?Jolly?Seber (CJS)...
