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.
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
Deposition of sedimentary organic matter in black shale facies indicated by the geochemistry and petrography of high-resolution samples, blake nose, western North Atlantic Deposition of sedimentary organic matter in black shale facies indicated by the geochemistry and petrography of high-resolution samples, blake nose, western North Atlantic
A transect of three holes drilled across the Blake Nose, western North Atlantic Ocean, retrieved cores of black shale facies related to the Albian Oceanic Anoxic Events (OAE) lb and ld. Sedimentary organic matter (SOM) recovered from Ocean Drilling Program Hole 1049A from the eastern end of the transect showed that before black shale facies deposition organic matter preservation was a...
Authors
C.E. Barker, M. Pawlewicz, E.A. Cobabe
Determining the ecological footprint of recreation activities to support management decision Determining the ecological footprint of recreation activities to support management decision
This paper reviews recreation impacts, impact monitoring methods, and impact management strategies and actions for managing visitation in mountain environments.
Authors
J. L. Marion
Development of a bird banding recapture database Development of a bird banding recapture database
Recaptures (and resightings) constitute the vast majority of post-release data from banded or otherwise marked nongame birds. A powerful suite of contemporary analytical models is available for using recapture data to estimate population size, survival rates and other parameters, and many banders collect recapture data for their project specific needs. However, despite widely recognized...
Authors
J. Tautin, P.F. Doherty, L. Metras
Development of the United States Leave No Trace programme: A historical perspective Development of the United States Leave No Trace programme: A historical perspective
This paper describes the historical development of the U.S. Leave No Trace (LNT) educational program. It begins with a review of the need for the program and traces it?s conception and early development in the 1970`s, revitalization in 1991, creation of Leave No Trace, Inc., and the current status. The paper concludes with a discussion of the program?s elements that have made it...
Authors
J. L. Marion, S. Reid
Ecological considerations for reservoir planning in north Georgia Ecological considerations for reservoir planning in north Georgia
No abstract available.
Authors
Mary C. Freeman, M.D. Merrill, B. J. Freeman
Ecological scale and its implications for freshwater fishes in the Florida Everglades Ecological scale and its implications for freshwater fishes in the Florida Everglades
No abstract available.
Authors
J.C. Trexler, W.F. Loftus, F. Jordan, J.H. Chick, K. L. Kandl, T. C. McElroy, O. L. Bass
Ecosystem structure and function modeling Ecosystem structure and function modeling
An important component of ecological assessments is the ability to predict and display changes in ecosystem structure and function over a variety of spatial and temporal scales. These changes can occur over short (less than 1 year) or long time frames (over 100 years). Models may emphasize structural responses (changes in species composition, growth forms, canopy height, amount of old...
Authors
H.C. Humphries, Jill Baron
Ecotoxicology Ecotoxicology
No abstract available.
Authors
D. J. Hoffman, Barnett A. Rattner, G.A. Burton, D.R. Lavoie
Editors' Preface Editors' Preface
Subheadings within the Preface include: What is meant by the ecotoxicology of wild mammals? Rationale for the book, aim of the book, and structure of the book. Aspirations and chanllenges.
Authors
R.F. Shore, Barnett A. Rattner
Effects of gulls on Piping Plover nest site selection at Monomoy National Wildlife Refuge, Massachusetts Effects of gulls on Piping Plover nest site selection at Monomoy National Wildlife Refuge, Massachusetts
We examined the effects of Herring and Great Black-backed Gulls on Piping Plover nest site selection on South Monomoy Island, MA, from 1998 to 2000. We compared Piping Plover behavior and nest site selection in a gull-free area to a gull area, and compared Piping Plover nesting area characteristics to areas not used by plovers. We found no difference in the frequency of disturbance by...
Authors
S. E. Keane, J.D. Fraser, P. A. Buckley
Effects of recent climate warming on caribou habitat and calf survival Effects of recent climate warming on caribou habitat and calf survival
Migratory Barren-Ground Caribou Rangifer tarandus granti are the most important subsistence resource for northern indigenous peoples. They are likely to respond to global climatic changes that affect the distribution of their forage resources and the availability of forage through the year. The Porcupine Caribou herd is a large, internationally migratory herd of about 128,000 individuals...
Authors
Brad Griffith, David C. Douglas, Donald E. Russell, Robert G. White, Thomas R. McCabe, Kenneth R. Whitten