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.
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Concepts: Integrating population survey data from different spatial scales, sampling methods, and species
Conservationists and managers are continually under pressure from the public, the media, and political policy makers to provide “tiger numbers,” not just for protected reserves, but also for large spatial scales, including landscapes, regions, states, nations, and even globally. Estimating the abundance of tigers within relatively small areas (e.g., protected reserves) is becoming increasingly tra
Authors
Robert Dorazio, Mohan Delampady, Soumen Dey, Arjun M. Gopalaswamy
Effects of climate change on ecological disturbance in the northern Rockies
Disturbances alter ecosystem, community, or population structure and change elements of the biological and/or physical environment. Climate changes can alter the timing, magnitude, frequency, and duration of disturbance events, as well as the interactions of disturbances on a landscape, and climate change may already be affecting disturbance events and regimes. Interactions among disturbance regim
Authors
Rachel A. Loehman, Barbara J. Bentz, Gregg A. DeNitto, Robert E. Keane, Mary E. Manning, Jacob P. Duncan, Joel M. Egan, Marcus B. Jackson, Sandra Kegley, I. Blakey Lockman, Dean E. Pearson, James A. Powell, Steve Shelly, Brytten E. Steed, Paul J. Zambino
Effects of climate change on forest vegetation in the northern Rockies
Increasing air temperature, through its influence on soil moisture, is expected to cause gradual changes in the abundance and distribution of tree, shrub, and grass species throughout the Northern Rockies, with drought tolerant species becoming more competitive. The earliest changes will be at ecotones between lifeforms (e.g., upper and lower treelines). Ecological disturbance, including wildfire
Authors
Robert E. Keane, Mary Frances Mahalovich, Barry L. Bollenbacher, Mary E. Manning, Rachel A. Loehman, Terrie B. Jain, Lisa M. Holsinger, Andrew J. Larson
Feral goats and sheep
No abstract available.
Authors
Steve C. Hess, Dirk H. Van Vuren, Gary W. Witmer
Scientific integrity - Recent Department of the Interior policies, codes, and their implementation
Established on January 28, 2011, the Department of Interior's (DOI’s) Scientific and Scholarly Integrity Policy was the first federal agency policy to respond to the Presidential Memorandum on Scientific Integrity (March 9, 2009) and guidance issued by the Office of Science and Technology Policy Memorandum on Scientific Integrity (December 17, 2010). The increasingly important role of science in
Authors
Alan D. Thornhill, Richard Coleman
Mangrove ecosystems under climate change
This chapter assesses the response of mangrove ecosystems to possible outcomes of climate change, with regard to the following categories: (i) distribution, diversity, and community composition, (ii) physiology of flora and fauna, (iii) water budget, (iv) productivity and remineralization, (v) carbon storage in biomass and sediments, and (vi) the filter function for elements beneficial or harmful
Authors
T.C. Jennerjahn, E. Gilman, Ken W. Krauss, L.D. Lacerda, I. Nordhaus, E. Wolanski
Alaska geologic road guides
No abstract available.
Authors
Warren J. Nokleberg, Thomas K. Bundtzen, David B. Stone, Charles G. Mull
Concepts: Assessing tiger population dynamics using capture–recapture sampling
Capture-recapture can be viewed as an animal survey method in which the count statistic is the total number of animals caught, and the associated detection probability is the probability of capture.
Authors
J. Andrew Royle, Arjun M. Gopalaswamy, Robert Dorazio, James D. Nichols, Devcharan Jathanna, Ravishankar Parameshwaran
Environment and science
Alaska is part of an international circumpolar North, which makes the United States an Arctic nation. Alaska is a place of Indigenous ingenuity and adaptation, a place where environmental extremes challenge the ways of living. In its more recent history, Alaska has been a place of resources and influx-a land known best for what it provides. This frontier persona, with its sourdoughs and prospector
Authors
John M. Pearce, Sandra L. Talbot
Geologic road guides for the Southern Canadian Cordillera--Viewing geology and tectonics along major highways
The Geologic Road Guides for the Southern Canadian Cordillera provide a layperson’s understanding of the major geologic units and their tectonic origins along portions of two sets of major highways corridors, herein termed the Southern Road Guide and the Northern Road Guide. The two routes are shown on the Southern Canadian Cordillera Geologic Map. The first page of each Road Guide is this map tha
Authors
Warren J. Nokleberg, Raymond A. Price
Identity, reproductive potential, distribution, ecology and management of invasive Pomacea maculata in the southern United States
Established populations of introduced Pomacea maculata, a highly fecund, large species of apple snail native to South America, now occur throughout southeast Asia, in Spain and extensively across the southern United States. Substantial research on nonnative apple snails takes place in Southeast Asia and has frequently identified apple snails as P. canaliculata. That these Asian populations represe
Authors
Romi L. Burks, Jennifer Bernatis, James E. Byers, Jacoby Carter, Charles M. Martin, William G. McDowell, Jess Van Dyke