Book Chapters
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 6198
Modeling birds: an overview Modeling birds: an overview
No abstract available.
Authors
Jeff S. Hatfield
Modeling survival and movement of resident giant Canada goose populations in the Atlantic flyway Modeling survival and movement of resident giant Canada goose populations in the Atlantic flyway
Distribution of resident giant Canada geese (Branta canadensis maxima) has changed markedly in the Atlantic Flyway in recent decades. This change may be related to habitat variation or to changes in hunting regulations. We attempt to assess impacts of hunting regulations on survival, movement, and harvest rate of Canada goose populations from Maine to South Carolina. During 15 June-31...
Authors
M.W. Miller, W. L. Kendall, J.B. Hestbeck
Molecular methods for discriminating taxa, monitoring species, and assessing fungal diversity Molecular methods for discriminating taxa, monitoring species, and assessing fungal diversity
Exiting new molecular approaches that allow investigators to assess fungal biodiversity directly are being developed. These approaches are still in their infancies, but they are developing rapidly. The following papers provide an introduction to this burgeoning field of study: Bohannan and Hughes (2003), Cooksey (1997), Jumpponen (2003), Landeweert et al. (2003), Nikolchva et al. (2003)...
Authors
Russell J. Rodriguez, Daniel Cullen, Cletus P. Kurtzman, George G. Khachatourians, Dwayne D. Hegedus
Mute swans: Natural (?) environmental indicators Mute swans: Natural (?) environmental indicators
The rapid expansion of the Chesapeake Bay's population of feral mute swans (Cygnus olar), coupled with a dramatic Bay-wide decline in submerged aquatic vegetation (SAV), has fueled much of the current debate surrounding the need for a management plan to protect the aquatic food resources that are critical to many species native to the Bay. Crucial to this decision process is a sound...
Authors
Daniel D. Day
Natural selection after release from a hatchery leads to domestication in steelhead, Oncorhynchus mykiss Natural selection after release from a hatchery leads to domestication in steelhead, Oncorhynchus mykiss
Genetic theory and data suggest that sea ranching of anadromous salmonids (Oncorhynchus spp. and Salmo spp.) results in domestication (increased fitness in the hatchery program) accompanied by a loss of fitness for natural production. We tested for genetic differences in growth, survival, and downstream migration of hatchery and wild steelhead (O. mykiss) reared together in a hatchery...
Authors
K.M. Leber, S. Kitada, H.L. Blankenship, T. Svasand
Nitrogen emissions along the Colorado Front Range: Response to population growth, land and water use change, and agriculture Nitrogen emissions along the Colorado Front Range: Response to population growth, land and water use change, and agriculture
No abstract available.
Authors
Jill Baron, S. Del Grosso, D. S. Ojima, D.M. Theobald, W.J. Parton
Observing and monitoring land use and land cover change Observing and monitoring land use and land cover change
This chapter contains sections titled: Detecting Change at Multiple Spatial and Temporal Scales Defining Observation and Monitoring Tools for Change Observation and Monitoring Monitoring Change in Land Cover The Characteristics of Change Integrated Analysis of Change: Case Examples and Studies Challenges Advancing the State-of-the-Science in Change Observation and Monitoring
Authors
Thomas R. Loveland, R. DeFries
Occupancy estimation and modeling for rare and elusive populations Occupancy estimation and modeling for rare and elusive populations
No abstract available.
Authors
D.I. MacKenzie, J. Andrew Royle, J.A. Brown, J.D. Nichols
On the use of capture-recapture models in mist-net studies On the use of capture-recapture models in mist-net studies
Capture-recapture models provide a statistical framework for estimating population parameters from mist-net data. Although Cormack-Jolly-Seber and related models have recently been used to estimate survival rates of birds sampled with mist nets, we believe that the full potential for use of capture-recapture models has not been realized by many researchers involved in mist-net studies...
Authors
W. L. Kendall, J.R. Sauer, J.D. Nichols, R. Pradel, J.E. Hines
Overview: Cross-habitat flux of nutrients and detritus Overview: Cross-habitat flux of nutrients and detritus
Ecologists have long known that all ecosystems receive considerable quantities of materials from outside their boundaries (e.g., Elton 1927), and quantifying the magnitude of such fluxes has long been a central tenet of ecosystem ecology (e.g., Odum 1971). Thus, one might think that the consequences of such fluxes for food webs would be well understood. However, food webs have...
Authors
M.J. Vanni, D.L. DeAngelis, D.E. Schindler, G.R. Huxel
Perspective on eastern migration studies: Stopover ecology of migratory landbirds in the Gulf Coast region Perspective on eastern migration studies: Stopover ecology of migratory landbirds in the Gulf Coast region
Millions of Nearctic-Neotropical landbirds move through the coastal habitats of the Gulf of Mexico each spring and autumn as they migrate across and around the Gulf. Migration routes in the Gulf region are not static and they shift year to year and season to season according to prevailing wind patterns. Using data from field and radar studies, we mapped patterns of migration movement and...
Authors
W.C. Barrow, L.A. Johnson Randall
Photographic sampling of elusive mammals in tropical forests Photographic sampling of elusive mammals in tropical forests
No abstract available.
Authors
K. U. Karanth, J.D. Nichols, S. Kumar