Mapping vegetation communities in Ozark National Scenic Riverways: final technical report to the National Park Service
Robert A. Chastain, Matthew A. Struckhoff, Keith W. Grabner, Esther D. Stroh, Hong He, David R. Larsen, Timothy A. Nigh, Jim Drake
2006, Open-File Report 2006-1354
Vegetation communities were mapped at two levels in Ozark National Scenic Riverways (ONSR) usign a hybrid combination of statistical methods and photointerpretation. The primary map includes 49 cover classes, including 24 cleasses that relate to vegetation associations currenly described by the United States National Vegetation Classification Standard (USNVC: The...
Summary of preliminary 2D inundation modeling for three Hattian landslide dam breach scenarios
Roger P. Denlinger, Daniel R.H. O’Connell, Matt Jones
2006, Open-File Report 2006-1094
On October 8, 2005, a M 7.6 earthquake near Muzafarrabad, Pakistan, triggered a landslide that dammed the Karli River and one of its tributaries about 4 km upstream of the confluence of the Karli and Jhelum rivers near the town of Hattian Bala. The smaller dam on the tributary of...
Map showing geology, oil and gas fields, and geologic provinces of the Gulf of Mexico region
2006, Open-File Report 97-470-L
This map was created as part of a worldwide series of geologic maps for the U.S. Geological Survey’s World Energy Project, available on CD-ROM and through the Internet. The goal of the project is to assess the undiscovered, technically recoverable oil and gas resources of the world. Geologic provinces were...
Reply to comment by F. Molz et al. on “Investigating the Macrodispersion Experiment (MADE) site in Columbus, Mississippi, using a three‐dimensional inverse flow and transport model”
Mary C. Hill, Heidi Christiansen Barlebo, Dan Rosbjerg
2006, Water Resources Research (42)
We are pleased to have the opportunity to discuss further what we think are important methods and results presented <span...
Multi-scale responses of soil stability and invasive plants to removal of non-native grazers from an arid conservation reserve
Erik A. Beever, Manuela M. P. Huso, David A. Pyke
2006, Diversity and Distributions (12) 258-268
Disturbances and ecosystem recovery from disturbance both involve numerous processes that operate on multiple spatial and temporal scales. Few studies have investigated how gradients of disturbance intensity and ecosystem responses are distributed across multiple spatial resolutions and also how this relationship changes through time during recovery. We investigated how cover...
Linking the concept of scale to studies of biological diversity: evolving approaches and tools.
E.A. Beever, R.K. Swihart, B. T. Bestelmeyer
2006, Diversity and Distributions (12) 229-235
Although the concepts of scale and biological diversity independently have received rapidly increasing attention in the scientific literature since the 1980s, the rate at which the two concepts have been investigated jointly has grown much more slowly. We find that scale considerations have been incorporated explicitly into six broad areas...
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...
Modeling the invasion and spread of contagious disease in heterogeneous populations
W.M. Getz, James O. Lloyd-Smith, Paul C. Cross, S. Bar-David, P.L.F. Johnson, T.C. Porco, M.S. Sanchez
Zhilan Feng, Ulf Dieckmann, Simon A. Levin, editor(s)
2006, Book chapter, Disease evolution: Models, concepts, and data analyses
No abstract available....
Observer error structure in bull trout redd counts in Montana streams: Implications for inference on true redd numbers
Clint C. Muhlfeld, Mark L. Taper, David F. Staples, Bradley B. Shepard
2006, Transactions of the American Fisheries Society (135) 643-654
Despite the widespread use of redd counts to monitor trends in salmonid populations, few studies have evaluated the uncertainties in observed counts. We assessed the variability in redd counts for migratory bull trout Salvelinus confluentus among experienced observers in Lion and Goat creeks, which are tributaries to the Swan River,...
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...
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...
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...
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...
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...
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...
Multiscale patterns of movement in fragmented landscapes and consequences on demography of the snail kite in Florida
J. Martin, J.D. Nichols, W.M. Kitchens, J.E. Hines
2006, Journal of Animal Ecology (75) 527-539
1. Habitat loss and fragmentation are major factors affecting vertebrate populations. A major effect of these habitat alterations is that they reduce movement of organisms. Despite the accepted importance of movement in driving the dynamics of many natural populations, movement of vertebrates in fragmented landscapes have seldom...
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...
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...
