Book Chapters
Science Quality and Integrity
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: 6158
The role of recreation ecology in sustainable tourism and ecotourism The role of recreation ecology in sustainable tourism and ecotourism
No abstract available.
Authors
Y.-F. Leung, J. L. Marion, T. A. Farrell
Thoughts on motivational problems in networks Thoughts on motivational problems in networks
No abstract available.
Authors
N. Burkardt
Tracking sandhill crane migration from Saskatchewan to the Gulf Coast Tracking sandhill crane migration from Saskatchewan to the Gulf Coast
Four adult sandhill cranes (Grus canadensis rowani) were captured in east-central Saskatchewan, equipped with transmitters, and tracked by satellite to determine if their migration routes and wintering areas would allow their use as guide birds to establish a new migratory flock of whooping cranes (G. americana). Two birds captured near Yorkton died or their transmitters were lost before
Authors
D.G. Hjertaas, D. H. Ellis, B.W. Johns, S.L. Moon
Type characters of non-native plant species in Great Lakes national parks (USA) Type characters of non-native plant species in Great Lakes national parks (USA)
Non-native plant species are increasing in frequency and abundance in many natural areas in the United States. In Midwestern National Parks, as much as one third of the flora may be non-native. It was hypothesized that botanical characters of these species could be used to typify them and improve the methods of predicting invasions. Data on 19 characters of 341 non-native species from...
Authors
J. P. Bennett
Uncertainty and spatial linear models for ecological data Uncertainty and spatial linear models for ecological data
Models are not perfect; they do not fit the data exactly and they do not allow exact prediction. Given that models are imperfect, we need to assess the uncertainties in the fits of the models and their ability to predict new outcomes. The goals of building models for scientific problems include (1) understanding and developing appropriate relationships between variables, and (2)...
Authors
Jay M Ver Hoef, Noel Cressie, Robert N. Fisher, Ted J. Case
Using models to facilitate complex decisions Using models to facilitate complex decisions
No abstract available.
Authors
W. L. Kendall
Validating and evaluating models Validating and evaluating models
No abstract available.
Authors
Douglas H. Johnson
Water conditioning and whooping crane survival after release in Florida Water conditioning and whooping crane survival after release in Florida
About 50% of the whooping cranes (Grus americana) released in Florida die within the first year of release. Most of these deaths and those in subsequent years result from bobcat (Lynx rufus) predation. Choosing release sites in open marshes away from bobcat habitat has improved survival. We hypothesized that exposure to ponds (water conditioning) at the rearing site would encourage birds...
Authors
G.F. Gee, Jane M. Nicolich, S.A. Nesbitt, Jeff S. Hatfield, D. H. Ellis, Glenn H. Olsen
Whitebark pine decline: Infection, mortality and population trends Whitebark pine decline: Infection, mortality and population trends
No abstract available.
Authors
Katherine C. Kendall, Robert E. Keane
Whitebark pine, grizzly bears, and red squirrels Whitebark pine, grizzly bears, and red squirrels
Appropriately enough, much of this book is devoted to discussing management challenges and techniques. However, the impetus for action—the desire to save whitebark pine (Pinus albicaulis) - necessarily arises from the extent to which we cherish it for its beauty and its connections with other things that we value. Whitebark pine is at the hub of a fascinating web of relationships. It is...
Authors
David J. Mattson, Katherine C. Kendall, Daniel P. Reinhart
Whooping crane egg management: options and consequences Whooping crane egg management: options and consequences
Eggs to build captive whooping crane (Grus americana) flocks and most eggs for reintroduction experiments have come from second viable eggs in 2-egg clutches in Canada. Four years ago, egg removal ceased. Based on reproductive rates for years when second eggs were removed and for years when eggs were not removed, we project numbers of young fledging in the wild and in captivity for the 2...
Authors
D. H. Ellis, G.F. Gee