Immunological and physiological effects of chronic exposure of Peromyscus leucopus to Aroclor 1254 at a concentration similar to that found at contaminated sites
M. Segre, S.M. Arena, E.H. Greeley, M. J. Melancon, D.A. Graham, J.B. French
2002, Toxicology (174) 163-172
Polychlorinated biphenyls (PCBs) are environmental contaminants known to cause adverse health effects to biological systems. Limited data are available on their effects on the immune system of wildlife species. Previously, we found that 4 and 6-week-old white-footed mice (Peromyscus leucopus) born from dams injected with a single dose (300 mg/kg)...
Determining the trophic guilds of fishes and macroinvertebrates in a seagrass food web
J.J. Luczkovich, G.P. Ward, James C. Johnson, R.R. Christian, D. Baird, H. Neckles, W.M. Rizzo
2002, Estuaries (25) 1143-1163
We established trophic guilds of macroinvertebrate and fish taxa using correspondence analysis and a hierarchical clustering strategy for a seagrass food web in winter in the northeastern Gulf of Mexico. To create the diet matrix, we characterized the trophic linkages of macroinvertebrate and fish taxa. present in Hatodule wrightii seagrass...
Narrowing historical uncertainty: probabilistic classification of ambiguously identified tree species in historical forest survey data
D.J. Mladenoff, S.E. Dahir, E.V. Nordheim, L.A. Schulte, G.R. Guntenspergen
2002, Ecosystems (5) 539-553
Historical data have increasingly become appreciated for insight into the past conditions of ecosystems. Uses of such data include assessing the extent of ecosystem change; deriving ecological baselines for management, restoration, and modeling; and assessing the importance of past conditions on the composition and function of current systems....
Estimating state-transition probabilities for unobservable states using capture-recapture/resighting data
W. L. Kendall, J.D. Nichols
2002, Ecology (83) 3276-3284
Temporary emigration was identified some time ago as causing potential problems in capture-recapture studies, and in the last five years approaches have been developed for dealing with special cases of this general problem. Temporary emigration can be viewed more generally as involving transitions to and from an unobservable state,...
FrogwatchUSA
Sam Droege
2002, People, Land, and Water (9) 35-35
full text: Frogs and toads are perhaps the most approachable and available of all our wildlife. In many, if not most places, they are abundant. In wetter parts of the East, almost anyone outside on a warm rainy night in spring will hear their dream-like calls, bellows,...
Using Christmas Bird Count data in analysis of population change
J.R. Sauer, W.A. Link
2002, American Birds 10-14
The scientific credibility of Christmas Bird Count (CBC) results depend on the development and implementation of appropriate methods of statistical analysis. The key to any successful analysis of CBC data is to begin with a careful review of how the limitations of the data are likely to influence...
Louisiana Ground-Water Map No.13: Hydrogeology and Potentiometric Surface of the Sparta Aquifer in Northern Louisiana, October 1996
Jeffrey A. Brantly, Ronald C. Seanor, Kaycee L. McCoy
2002, Water-Resources Investigations Report 02-4053
This report describes the thickness and areal extent of the Sparta aquifer, identifies sands within the fresh-water extent of the aquifer, and presents data and a map that illustrate the generalized potentiometric surface (water levels) during October 1996. The report includes a detailed geophysical log, structure contour maps, hydrogeologic sections,...
Identification and synthetic modeling of factors affecting American black duck populations
Michael J. Conroy, Mark W. Miller, James E. Hines
2002, Book, Wildlife Monographs
We reviewed the literature on factors potentially affecting the population status of American black ducks (Anas rupribes). Our review suggests that there is some support for the influence of 4 major, continental-scope factors in limiting or regulating black duck populations: 1) loss in the quantity or quality of breeding habitats;...
Approaches for the direct estimation of lambda, and demographic contributions to lambda, using capture-recapture data
J.D. Nichols, J.E. Hines
2002, Book chapter, Statistical analysis of data from marked bird populations
We first consider the estimation of the finite rate of population increase or population growth rate, lambda sub i, using capture-recapture data from open populations. We review estimation and modelling of lambda sub i under three main approaches to modelling open-population data: the classic approach of Jolly (1965) and...
The use of resighting data to estimate the rate of population growth of the snail kite in Florida
V.J. Dreitz, J.D. Nichols, J.E. Hines, R.E. Bennetts, W.M. Kitchens, D.L. DeAngelis
2002, Journal of Applied Statistics (29) 609-623
The rate of population growth (lambda) is an important demographic parameter used to assess the viability of a population and to develop management and conservation agendas. We examined the use of resighting data to estimate lambda for the snail kite population in Florida from 1997-2000. The analyses consisted of (1)...
The exotic mute swan (Cygnus olor) in Chesapeake Bay, USA
Matthew C. Perry
Matthew C. Perry, editor(s)
2002, Book chapter, Black ducks and their Chesapeake Bay habitats : proceedings of a symposium
The exotic mute swan (Cygnus olor) has increased its population size in Chesapeake Bay (Maryland and Virginia) to approximately 4,500 since 1962 when five swans were released in the Bay. The Bay population of mute swans now represents 30% of the total Atlantic Flyway population (12,600) and has had...
Investigations of potential bias in the estimation of lambda using Pradel's (1996) model for capture-recapture data
J.E. Hines, J.D. Nichols
2002, Book chapter, Statistical analysis of data from marked bird populations
Pradel's (1996) temporal symmetry model permitting direct estimation and modelling of population growth rate, lambda sub i provides a potentially useful tool for the study of population dynamics using marked animals. Because of its recent publication date, the approach has not seen much use, and there have been virtually...
Random effects and shrinkage estimation in capture-recapture models
J. Andrew Royle, W.A. Link
2002, Book chapter, Statistical analysis of data from marked bird populations
We discuss the analysis of random effects in capture-recapture models, and outline Bayesian and frequentists approaches to their analysis. Under a normal model, random effects estimators derived from Bayesian or frequentist considerations have a common form as shrinkage estimators. We discuss some of the difficulties of analysing random...
Test for age-specificity in survival of the common tern
I.C.T. Nisbet, E. Cam
2002, Book chapter, Statistical analysis of data from marked bird populations
Much effort in life-history theory has been addressed to the dependence of life-history traits on age, especially the phenomenon of senescence and its evolution. Although senescent declines in survival are well documented in humans and in domestic and laboratory animals, evidence for their occurrence and importance in wild animal...
Toxicological assessment of aquatic ecosystems: application to watercraft contaminants in shallow water environments
P. V. Winger
Michael J. Kemmish, editor(s)
2002, Book chapter, Impacts of Motorized Watercraft on Shallow Estuarine and Coastal Marine Environments.
Recreational boating and personal watercraft use have the potential to adversely impact shallow water systems through contaminant release and physical disturbance of bottom sediments. These nearshore areas are often already degraded by surface runoff, municipal and industrial effluents, and other anthropogenic activities. For proper management, information is needed...
Field surveys: Estimating absolute densities of tigers using capture-recapture sampling
K. U. Karanth, S. Kumar, J.D. Nichols
K.Ullas Karanth, James D. Nichols, editor(s)
2002, Book chapter, Monitoring tigers and their prey: A manual for wildlife researchers, managers and conservationists in tropical Asia
Contents: -- Introduction -- Choice of camera trap equipment -- Conducting camera trap surveys -- Analysis of capture-recapture data -- References...
Integrated management of waterbirds: Beyond the conventional
R.M. Erwin
Katharine C. Parsons, Stephen C. Brown, R. Michael Erwin, Helen A. Czech, John C. Coulson, editor(s)
2002, Book chapter, Managing wetlands for waterbirds: Integrated approaches
Integrated waterbird management over the past few decades has implicitly referred to methods for managing wetlands that usually attempt to enhance habitat for taxonomic groups such as shorebirds and wading birds, in addition to waterfowl, the traditional focus group. Here I describe five elements of integration in management: taxonomic,...
Field testing of immunocontraception on white-tailed deer (Odocoileus virginianus) on Fire Island National Seashore, New York, USA
R.E. Naugle, A.T. Rutberg, H.B. Underwood, J.W. Turner Jr., I.K. Liu
J.F. Kirkpatrick, B.L. Lasley, W.R. Allen, C. Doberska, editor(s)
2002, Book chapter, Fertility Control in Wildlife: Fifth International Symposium on Fertility Control in Wildlife, Skukuza, The Kruger National Park, South Africa, August 2001
Application of contraception for the control of suburban populations of white-tailed deer (Odocoileus virginianus) has been much debated, but few data are available on field applications and even fewer on population effects. Between 1993 and 1997, 74-164 individually known female deer living on Fire Island, New York, USA, were...
Contrasting determinants of abundance in ancestral and colonized ranges of an invasive brood parasite
D.C. Hahn, R.J. O’Connor
J. Michael Scott, Patricia J. Heglund, Michael L. Morrison, Jonathan B. Haufler, William A. Wall, editor(s)
2002, Book chapter, Predicting Species Occurrences : Issues of Accuracy and Scale
Avian species distributions are typically regarded as constrained by spatially extensive variables such as climate, habitat, spatial patchiness, and microhabitat attributes. We hypothesized that the distribution of a brood parasite depends as strongly on host distribution patterns as on biophysical factors and examined this hypothesis with respect to the...
Statistical mapping of count survey data
J. Andrew Royle, W.A. Link, J.R. Sauer
J. Michael Scott, Patricia J. Heglund, Michael L. Morrison, Jonathan B. Haufler, William A. Wall, editor(s)
2002, Book chapter, Predicting species occurrences : issues of accuracy and scale
We apply a Poisson mixed model to the problem of mapping (or predicting) bird relative abundance from counts collected from the North American Breeding Bird Survey (BBS). The model expresses the logarithm of the Poisson mean as a sum of a fixed term (which may depend on habitat variables)...
Modelling postfledging survival and age-specific breeding probabilities in species with delayed maturity: A case study of Roseate Terns at Falkner Island, Connecticut
Jeffrey A. Spendelow, James D. Nichols, J.E. Hines, Jean-Dominique Lebreton, Roger Pradel
2002, Journal of Applied Statistics (29) 385-405
We modeled postfledging survival and age-specific breeding probabilities in endangered Roseate Terns (Sterna dougallii) at Falkner Island, Connecticut, USA using capture-recapture data from 1988-1998 of birds ringed as chicks and as adults. While no individuals bred as 2-yr-olds during this period, about three-quarters of the young that survived and...
Seismic velocity structure of the continental lithosphere from controlled source data
Walter D. Mooney, Claus Prodehl, Nina Pavlenkova
2002, International Geophysics (81) 887-910
The purpose of this chapter is to provide a summary of the seismic velocity structure of the continental lithosphere, i.e., the crust and uppermost mantle. We define the crust as the outer layer of the Earth that is separated from the underlying mantle by the Mohorovičić discontinuity (Moho). We adopted the usual convention of...
Challenges in observational seismology
W.H.K. Lee
2002, International Geophysics (81) 269-281
Earthquake seismology became a quantitative scientific discipline after instruments were developed to record seismic waves in the late 19th century (Dewey and Byerly, 1969; <a class="intra-ref" title="Persistent...
Water resources data, Idaho, water year 2001, Volume 2. Upper Columbia River Basin and Snake River Basin below King Hill
I. O. O’Dell, A.K. Lehmann, A.M. Campbell, S.E. Beattie, T.S. Brennan
2002, Water Data Report ID-01-2
No abstract available....
Chemical data for bottom sediment in Mountain Creek Lake, Dallas, Texas, 1999-2000
Jennifer T. Wilson
2002, Open-File Report 2002-53
Mountain Creek Lake is a reservoir adjacent to the Naval Weapons Industrial Reserve Plant and the former Naval Air Station in Dallas, Texas. The U.S. Geological Survey began studies of water, sediment, and biota in the reservoir in 1994 after a Resource Conservation and Recovery Act Facility Investigation detected concentrations...
