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: 6195
Restoration of Lake Trout in Lake Superior through Interagency Cooperative Management Restoration of Lake Trout in Lake Superior through Interagency Cooperative Management
The lake trout is a keystone species in the Laurentian Great Lakes that supported valuable fisheries throughout the basin. However, lake trout populations declined to near extirpation in nearly all of the lakes because of the combined effects of over-fishing, sea lamprey predation, and habitat degradation. To restore self-sustaining lake trout populations in Lake Superior, state...
Authors
Michael J. Hansen, Charles R. Bronte
Lake Ontario deepwater sculpin recovery: An unexpected outcome of ecosystem change Lake Ontario deepwater sculpin recovery: An unexpected outcome of ecosystem change
Fish population recoveries can result from ecosystem change in the absence of targeted restoration actions. In Lake Ontario, native Deepwater Sculpin Myoxecephalus thompsonii, were common in the late-1800s, but by the mid-1900s the species was possibly extirpated. During this period mineral nutrient inputs increased and piscivore abundance declined, which increased the abundance of the...
Authors
Brian Weidel, Michael J. Connerton, Maureen Walsh, Jeremy Holden, Kristen Holleck, Brian F. Lantry
Preface: Proceedings of the First International Snakehead Symposium Preface: Proceedings of the First International Snakehead Symposium
No abstract available.
Authors
John Odenkirk, Duane Chapman
Trout as native and non-native species: A management paradox Trout as native and non-native species: A management paradox
Native trout are threatened worldwide by introductions of non-native trout that in many cases are themselves threatened within their native range and historical habitats. This chapter focuses on this paradox and addresses how information gained to protect and restore a species in its native range can be used to suppress the same species outside its native range, where it may be invasive...
Authors
Michael J. Hansen, Christopher S. Guy, Phaedra E. Budy, Thomas E. McMahon
Climatic variation drives growth potential of juvenile Chinook Salmon (Oncorhynchus tshawytscha) along a sub-Arctic boreal riverscape Climatic variation drives growth potential of juvenile Chinook Salmon (Oncorhynchus tshawytscha) along a sub-Arctic boreal riverscape
Climatic variation is a key driver of freshwater physical processes that in turn control stream fish growth and population dynamics at fine spatial scales and species distributions across broad landscapes. A recent downturn in Chinook Salmon returns across the Yukon River basin, Alaska, USA, and Yukon Territories, Canada, has led to hardship among user groups and increased interest in...
Authors
Jeffrey A. Falke, Brock M. Huntsman, Erik R. Schoen
Global status of trout and char: Conservation challenges in the twenty-first century Global status of trout and char: Conservation challenges in the twenty-first century
Freshwater ecosystems are among the most threatened ecosystems in the world (Richter et al. 1997; Strayer and Dudgeon 2010), and freshwater fishes may now be the most threatened group of vertebrates (Ricciardi and Rasmussen 1999; Vorosmarty et al. 2010; Darwall and Freyhof 2016). Of the 7,300 freshwater fish species globally assessed by the International Union for Conservation of Nature...
Authors
Clint C. Muhlfeld, Daniel C. Dauwalter, Vincent S. D’Angelo, Andrew Ferguson, J. Joseph Giersch, Dean Impson, Itsuro Koizumi, Ryan Kovach, Philip McGinnity, Johannes Schoeffmann, John Epifanio, Leif Asbjørn Vøllestad
Empirical estimation of natural geoelectric hazards Empirical estimation of natural geoelectric hazards
Geoelectric field time series can be estimated by convolving estimates of Earth‐surface impedance, such as those obtained from magnetotelluric survey measurements, with historical records of geomagnetic variation obtained at magnetic observatories. This straightforward procedure permits the mapping of geoelectric field variation during magnetic storms. Statistical analysis of the time...
Authors
Jeffrey J. Love, Paul A. Bedrosian, Anna Kelbert, Greg M. Lucas
The first 3D conductivity model of the contiguous US: Reflections on geologic structure and application to induction hazards The first 3D conductivity model of the contiguous US: Reflections on geologic structure and application to induction hazards
Estimation of ground level geoelectric fields has been identified by the National Space Weather Action Plan as a key component of assessment and mitigation of space weather impacts on critical infrastructure. Estimates of spatially and temporally variable electric fields are used to generate statistically based hazard maps and show promise toward monitoring and responding to geomagnetic
Authors
Anna Kelbert, Paul A. Bedrosian, Benjamin S. Murphy
Multivariate models and analyses Multivariate models and analyses
No abstract available.
Authors
Erica Stuber, Christopher Chizinski, Jeffrey Lusk, Joseph J. Fontaine
Comparing ecological models Comparing ecological models
No abstract available.
Authors
Mevin Hooten, Evan G. Cooch
Second-generation feedstocks from dedicated energy crops: Implications for wildlife and wildlife habitat Second-generation feedstocks from dedicated energy crops: Implications for wildlife and wildlife habitat
No abstract available.
Authors
Susan P. Rupp, Christine Ribic
Giant sequoias: Drama on a grand scale Giant sequoias: Drama on a grand scale
No abstract available.
Authors
Nathan L. Stephenson