Publications
Browse publications authored by our scientists. Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Filter Total Items: 5083
Let’s agree to disagree: Comparing auto-acoustic identification programs for northeastern bats Let’s agree to disagree: Comparing auto-acoustic identification programs for northeastern bats
With the declines in abundance and changing distribution of white-nose syndrome–affected bat species, increased reliance on acoustic monitoring is now the new “normal.” As such, the ability to accurately identify individual bat species with acoustic identification programs has become increasingly important. We assessed rates of disagreement between the three U.S. Fish and Wildlife...
Authors
W. Mark Ford, Tomás Nocera, Alexander Silvis, Christopher A. Dobony
Perspectives and future directions Perspectives and future directions
No abstract available.
Authors
Stephen DeStefano, Clint W. Boal
Experimental evidence of long-term reproductive costs in a colonial nesting seabird Experimental evidence of long-term reproductive costs in a colonial nesting seabird
Trade-offs between current and future reproduction are central to the evolution of life histories. Experiments that manipulate brood size provide an effective approach to investigating future costs of current reproduction. Most manipulative studies to date, however, have addressed only the short-term effects of brood size manipulation. Our goal was to determine whether survival or...
Authors
Aly McKnight, Erik J. Blomberg, Gregory H. Golet, David B. Irons, Cyndy Loftin, Shawn T. McKinney
Efficiently optimizing for dendritic connectivity on tree-structured networks in a multi-objective framework Efficiently optimizing for dendritic connectivity on tree-structured networks in a multi-objective framework
We provide an exact and approximation algorithm based on Dynamic Programming and an approximation algorithm based on Mixed Integer Programming for optimizing for the so-called dendritic connectivity on tree-structured networks in a multi-objective setting. Dendritic connectivity describes the degree of connectedness of a network. We consider different variants of dendritic connectivity...
Authors
Quinru Shi, Jonathan M. Gomes-Selman, Roosevelt García-Villacorta, Suresh Sethi, Alexander S. Flecker, Carla P. Gomes
Age and performance at fledging are a cause and consequence of juvenile mortality between life stages Age and performance at fledging are a cause and consequence of juvenile mortality between life stages
Should they stay or should they leave? The age at which young transition between life stages, such as living in a nest versus leaving it, differs among species and the reasons why are unclear. We show that offspring of songbird species that leave the nest at a younger age have less developed wings that cause poorer flight performance and greater mortality after fledging. Experimentally...
Authors
Thomas E. Martin, Bret Tobalske, Margaret M. Riordan, Samuel B. Case, Kenneth P. Dial
Landscape composition mediates movement and habitat selection in bobcats (Lynx rufus): Implications for conservation planning Landscape composition mediates movement and habitat selection in bobcats (Lynx rufus): Implications for conservation planning
Context The analysis of individual movement choices can be used to better understand population-level resource selection and inform management.Objectives We investigated movements and habitat selection of 13 bobcats in Vermont, USA, under the assumption individuals makes choices based upon their current location. Results were used to identify “movement-defined” corridors.Methods We used...
Authors
Hanem G. Abouelezz, Therese M. Donovan, Ruth M. Mickey, James D. Murdoch, Mark Freeman, Kimberly Royar
Growth, condition, and trophic relations of stocked trout in southern Appalachian mountain streams Growth, condition, and trophic relations of stocked trout in southern Appalachian mountain streams
Stream trout fisheries are among the most popular and valuable in the United States, but many are dependent on hatcheries to sustain fishing and harvest. Thus, understanding the ecology of hatchery‐reared trout stocked in natural environments is fundamental to management. We evaluated the growth, condition, and trophic relations of Brook Trout Salvelinus fontinalis, Brown Trout Salmo...
Authors
J. R. Fischer, Thomas J. Kwak, H. J. Flowers, W. G. Cope, J. M. Rash, D. A. Besler
Combined effects of temperature and salinity on the physiology of two geographically-distant eastern oyster populations Combined effects of temperature and salinity on the physiology of two geographically-distant eastern oyster populations
Understanding why a species occupies a certain geographic range and predicting how they will be affected by climate change require characterizing physiological traits in geographically-distant populations. The objective of this study was to perform a direct comparison of two eastern oyster (Crassostrea virginica) populations that occupy contrasting temperature and salinity habitats, New...
Authors
S. M. Casas, R. Filgueira, R. Lavaud, L. A. Comeau, Megan La Peyre, J. F. La Peyre
Historical sediment mercury deposition for select South Dakota, USA, lakes: implications for watershed transport and flooding Historical sediment mercury deposition for select South Dakota, USA, lakes: implications for watershed transport and flooding
Purpose Select South Dakota, USA water bodies, including both natural lakes and man-made impoundments, were sampled and analyzed to assess mercury (Hg) dynamics and historical patterns of total Hg deposition. Materials and methods Sediment cores were collected from seven South Dakota lakes. Mercury concentrations and flux profiles were determined using lead (210Pb) dating and...
Authors
Maria K. Squillace, Heidi L. Sieverding, Hailemelekot H. Betemariam, Noel R. Urban, Michael R. Penn, Thomas M. DeSutter, Steven R. Chipps, James J. Stone
Nonbreeding duck use at Central Flyway National Wildlife Refuges Nonbreeding duck use at Central Flyway National Wildlife Refuges
Within the U.S. portion of the Central Flyway, the U.S. Fish and Wildlife Service manages waterfowl on numerous individual units (i.e., Refuges) within the National Wildlife Refuge System. Presently, the extent of waterfowl use that Refuges receive and the contribution of Refuges to waterfowl populations (i.e., the proportion of the Central Flyway population registered at each Refuge)...
Authors
Kent Andersson, Craig A. Davis, Grant Harris, David A. Haukos
Large-scale variation in density of an aquatic ecosystem indicator species Large-scale variation in density of an aquatic ecosystem indicator species
Monitoring indicator species is a pragmatic approach to natural resource assessments, especially when the link between the indicator species and ecosystem state is well justified. However, conducting ecosystem assessments over representative spatial scales that are insensitive to local heterogeneity is challenging. We examine the link between polychlorinated biphenyl (PCB) contamination...
Authors
Chris Sutherland, Angela K. Fuller, Andy Royle, Matthew P. Hare, Sean Madden
Evaluating outcomes of management targeting the recovery of a migratory songbird of conservation concern Evaluating outcomes of management targeting the recovery of a migratory songbird of conservation concern
Assessing outcomes of habitat management is critical for informing and adapting conservation plans. From 2013 – 2019, a multi-stage management initiative aims to create >25,000 ha of shrubland and early-successional vegetation to benefit Golden-winged Warblers (Vermivora chrysoptera) in managed forested landscapes of the western Great Lakes region. We studied a dense breeding population...
Authors
Henry M. Streby, Gunnar R. Kramer, Sean M. Peterson, David E. Andersen