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Publications

Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS.  Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.

Filter Total Items: 176717

Interplay between tectonics and submarine mass transport deposits in Cortes Basin: New high-resolution geophysics in the Outer California Borderland Interplay between tectonics and submarine mass transport deposits in Cortes Basin: New high-resolution geophysics in the Outer California Borderland

The Outer California Borderland (OCB) is an active transform plate boundary offshore Southern California, where the relationship between faulting and submarine mass transport deposits (MTDs) remains poorly understood. Onshore paleoseismic data provide high-resolution earthquake records, whereas marine geophysical data capture longer-term histories. Offshore fault systems pose hazards to
Authors
Andrea Fabbrizzi, Jillian M. Maloney, Boe Jay Derosier, Bradley Keith

Interspecific brood parasitism of a greater sage-grouse brood by chukar in Nevada Interspecific brood parasitism of a greater sage-grouse brood by chukar in Nevada

Greater sage-grouse (Centrocercus urophasianus; hereafter, sage-grouse) populations have declined across their range, resulting in high conservation concerns among state and federal wildlife managers. While interspecific nest parasitism by chukar (Alectoris chukar) on sage-grouse nests has been observed previously, the parasitic effects benefiting or harming the reproduction of either...
Authors
Belle Joy-Lynn Malley, McCoy R. Meshach, Steven R. Mathews, Peter S. Coates

Intertidal community responses to perturbations along Alaska park coastlines Intertidal community responses to perturbations along Alaska park coastlines

Nearshore ecosystems are highly productive zones with strong connections to both terrestrial and open ocean ecosystems. The rocky intertidal is a highly dynamic ecosystem and changes over a variety of spatial and temporal scales depending on the factors contributing to the change. Here we summarize how nearshore communities and species responded to several perturbations to intertidal...
Authors
Sarah Beth Traiger, Brenda Ballachey, Heather Coletti, Daniel Esler

Intertidal ecosystem indicators in the northern Gulf of Alaska Intertidal ecosystem indicators in the northern Gulf of Alaska

No abstract available.
Authors
Heather Coletti, Sarah Beth Traiger, Katrin Iken, James L. Bodkin, Brenda Ballachey, George G. Esslinger, Kimberly A. Kloecker, Brenda H. Konar, Robert M. Suryan

Intraspecific contact among white-tailed deer: A literature review and chronic wasting disease case study Intraspecific contact among white-tailed deer: A literature review and chronic wasting disease case study

White-tailed deer (Odocoileus virginianus) are a valuable game mammal in the eastern United States necessitating detailed understanding of disease transmission. We conducted a literature review on intraspecific contact (i.e., interactions wherein disease transmission may occur) among deer. From 69 studies, we identified five themes underlying research on intraspecific deer contact...
Authors
Nathaniel H. Wehr, Kristin J. Bondo, Christopher S. Rosenberry, David Stainbrook, Bret D. Wallingford, W. David Walter

Invasion potential of nonnative fishes through a large western dam into an iconic and vulnerable ecosystem Invasion potential of nonnative fishes through a large western dam into an iconic and vulnerable ecosystem

Native fishes face imperilment due to habitat loss and fragmentation, megadrought, invasive species, and synergies amongst threats. These threats coalesce at Glen Canyon Dam (GCD), which impounds the Colorado River to create Lake Powell, a reservoir inhabited by a suite of nonnative fishes. Water level in Lake Powell has declined precipitously due to water overallocation and megadrought
Authors
Barrett Friesen, Casey A. Pennock, Phaedra E. Budy

Invasion resistance varies by fuel break type in sagebrush ecosystems Invasion resistance varies by fuel break type in sagebrush ecosystems

Background Wildfire is an increasingly important driver of changes within sagebrush (Artemisia spp. L.) ecosystems of the western USA, often resulting in increased spread of exotic annual grasses, such as cheatgrass (Bromus tectorum L.), and subsequent losses of native vegetation and wildlife habitat. Fuel breaks— areas of land treated to reduce or redistribute fuel loads — are widely...
Authors
Austin L. Nash, Brianne E. Brussee, Cali L. Weise, Douglas J. Shinneman, Susan K. McIlroy, Sarah C. Webster, Steven R. Mathews, Seth J. Dettenmaier, Lea A. Condon, Michele R. Crist, Cameron L. Aldridge, Julie A. Heinrichs, Mark A. Ricca, Shawn T. O’Neil, Peter S. Coates

Invasive carps versus native fish: A first-pass trait-based index for assessing competition threats. Invasive carps versus native fish: A first-pass trait-based index for assessing competition threats.

Introduction: Bigheaded carp (Hypophthalmichthys spp.) are invasive fish in the Mississippi River basin. Their rapid proliferation has raised concerns about exploitative competition with native fishes, with consequences that remain incompletely understood. We aimed to identify native species most susceptible to competition based on overlap with bigheaded carp in dietary and habitat...
Authors
Leandro E. Miranda, Mirtha A. Angulo-Valencia

Invasive grass influences on the fire cycle and treatment effectiveness to control their abundance in the Intermountain West, USA Invasive grass influences on the fire cycle and treatment effectiveness to control their abundance in the Intermountain West, USA

Many non-native invasive grass species increase wildfire activity and regenerate more quickly than native species. This invasive grass–fire cycle has severe negative consequences for ecosystems, creating a need to understand how different invasive grass species alter fuel characteristics and fire behavior, as well as effective treatments to control their abundance. To address these needs...
Authors
Sarah A. Costanzo, Seth M. Munson

Invasive hybridization has unpredicted and variable effects on trout survival in contrasting environments Invasive hybridization has unpredicted and variable effects on trout survival in contrasting environments

Invasive hybridization between native and introduced species is widespread, especially in fishes, yet its effects on fitness-related traits across environments remain poorly understood. We combined individual genetic admixture estimates with capture–recapture data to quantify how hybridization between native Westslope Cutthroat Trout (Oncorhynchus lewisi) and invasive Rainbow Trout...
Authors
Jeffrey T. Strait, Ryan P. Kovach, Lisa A Eby, Clint C. Muhlfeld, Matthew C. Boyer, Stephen J. Amish, Paul M. Luckas, Winsor H. Lowe, Gordon Luikart

Inventory of bat activity at Pearl Harbor National Memorial to inform historic preservation and compliance Inventory of bat activity at Pearl Harbor National Memorial to inform historic preservation and compliance

We examined ‘ōpe‘ape‘a, or Hawaiian hoary bat (Lasiurus semotus; Chiroptera: Vespertilionidae), acoustic activity and surveyed potential roost trees at the Ford Island Chief Petty Officer’s (CPO) Bungalows Neighborhood of Pearl Harbor National Memorial (PERL) on the island of O‘ahu. We established four acoustic monitoring stations (PERL1–PERL4) that operated nightly to survey for ‘ōpe...
Authors
Kristina Montoya-Aiona, Karen Courtot

Investigating hydrologic alteration under historical and future scenarios in the Mobile River and Perdido River basins using the cubist algorithm Investigating hydrologic alteration under historical and future scenarios in the Mobile River and Perdido River basins using the cubist algorithm

This study investigates the impacts of human activities and climate variability on hydrologic alterations in the Mobile River and Perdido River Basins of Alabama. The research uses a machine learning approach, specifically cubist models, to quantify and predict changes in flow duration curves (FDCs) under both historical (1980–2009) and future climate scenarios. Future climate...
Authors
Sabahattin Isik, Rachel Lianna Dubose, Victor L. Roland
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