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: 6063
Five years (2000-2004) of post-reconstruction monitoring of freshwater tidal wetlands in the urban Anacostia River, Washington, D.C. USA
The Anacostia River in Washington, D.C. USA consisted of over 809 hectares (2000 acres) of freshwater tidal wetlands before mandatory dredging removed most of them in the first half of the 20th century. Much of this13 kilometer (8 mile) reach was transferred to the National Park Service (NPS). Planning processes in the 1980's envisioned a restoration (rejuvenation) of some wetlands for habitat,
Authors
D. Hammerschlag, C. Krafft
Five-year post-reconstruction Kingman Marsh monitoring project: vegetation
No abstract available.
Authors
R.S. Hammerschlag, C.C. Krafft
Food webs and parasites in a salt marsh ecosystem
No abstract available at this time
Authors
K. D. Lafferty, R. F. Hechinger, J.C. Shaw, K.L. Whitney, A. M. Kuris
Foraging ecology
Longitudinal foraging data collected from 60 sea otters implanted with VHF radio transmitters at two study sites in Central California over a three-year period demonstrated even greater individual dietary specialization than in previous studies, with only 54% dietary overlap between individuals and the population.Multivariate statistical analyses indicated that individual diets could be grouped in
Authors
M. Tim Tinker, James A. Estes, Michelle Staedler, James L. Bodkin
Geochemistry of the Amazon Estuary
The Amazon River supplies more freshwater to the ocean than any other river in the world. This enormous volume of freshwater forces the estuarine mixing out of the river channel and onto the continental shelf. On the continental shelf, the estuarine mixing occurs in a very dynamic environment unlike that of a typical estuary. The tides, the wind, and the boundary current that sweeps the continenta
Authors
Joseph M. Smoak, James M. Krest, Peter W Swarzenski
Head-bobbing behavior in foraging Whooping Cranes
Many species of cursorial birds 'head-bob', that is, they alternately thrust the head forward, then hold it stiII as they walk. Such a motion stabilizes visual fields intermittently and could be critical for visual search; yet the time available for stabilization vs. forward thrust varies with walking speed. Whooping Cranes (Grus americana) are extremely tall birds that visually search the groun
Authors
T. Cronin, M. Kinloch, Glenn H. Olsen
High tides and rising seas: potential effects on estuarine waterbirds
Coastal waterbirds are vulnerable to water-level changes especially under predictions of accelerating sea-level rise and increased storm frequency in the next century. Tidal and wind-driven fluctuations in water levels affecting marshes, their invertebrate communities, and their dependent waterbirds are manifested in daily, monthly, seasonal, annual, and supra-annual (e.g., decadal or 18.6-yr) pe
Authors
R.M. Erwin, G.M. Sanders, D.J. Prosser, Donald R. Cahoon
Impacts of marsh management on coastal-marsh bird habitats
The effects of habitat-management practices in coastal marshes have been poorly evaluated. We summarize the extant literature concerning whether these manipulations achieve their goals and the effects of these manipulations on target (i.e., waterfowl and waterfowl food plants) and non-target organisms (particularly coastal-marsh endemics). Although we focus on the effects of marsh management on
Authors
L.R. Mitchell, S. Gabrey, P.P. Marra, R.M. Erwin
Interferometric Synthetic Aperture Radar (InSAR)
Geodesists are, for the most part, a patient and hardworking lot. A day spent hiking to a distant peak, hours spent waiting for clouds to clear a line-of-sight between observation points, weeks spent moving methodically along a level line — such is the normal pulse of the geodetic profession. The fruits of such labors are all the more precious because they are so scarce. A good day spent with an e
Authors
D. Dzurisin, Z. Lu
Migratory connectivity of a widely distributed songbird, the American redstart (Setophaga ruticilla)
Determining the degree of connectivity between breeding and wintering populations is critical for understanding the ecology and evolution of migratory systems. We analyzed stable hydrogen isotopic compositions in tail feathers ($Dw) collected from 26 sites in 11 countries throughout the wintering range of the American Redstart (Setophaga ruticilla), a Nearctic- Neotropical migratory passerine bir
Authors
D.R. Norris, P.P. Marra, G.J. Bowen, L.M. Ratcliffe, J. Andrew Royle, T.K. Kyser