Skip to main content
U.S. flag

An official website of the United States government

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: 175546

Microbial communities in standing dead trees in ghost forests are largely aerobic, saprophytic, and methanotrophic Microbial communities in standing dead trees in ghost forests are largely aerobic, saprophytic, and methanotrophic

Standing dead trees (snags) are recognized for their influence on methane (CH4) cycling in coastal wetlands, yet the biogeochemical processes that control the magnitude and direction of fluxes across the snag-atmosphere interface are not fully elucidated. Herein, we analyzed microbial communities and fluxes at one height from ten snags in a ghost forest wetland. Snag-atmosphere CH4...
Authors
Mary Jane Carmichael, Melinda Martinez, Suzanna L. Bräuer, Marcelo Ardón

Bioconcentration of per- and polyfluoroalkyl substances and precursors in fathead minnow tissues environmentally exposed to aqueous film-forming foam-contaminated waters Bioconcentration of per- and polyfluoroalkyl substances and precursors in fathead minnow tissues environmentally exposed to aqueous film-forming foam-contaminated waters

Exposure to per- and polyfluoroalkyl substances (PFAS) has been associated with toxicity in wildlife and negative health effects in humans. Decades of fire training activity at Joint Base Cape Cod (MA, USA) incorporated the use of aqueous film-forming foam (AFFF), which resulted in long-term PFAS contamination of sediments, groundwater, and hydrologically connected surface waters. To...
Authors
Nicholas I. Hill, Jitka Becanova, Simon Vojta, Larry B. Barber, Denis R. LeBlanc, Alan M. Vajda, Heidi M. Pickard, Rainer Lohmann

River channel response to the removal of the Pilchuck River Diversion Dam, Washington State River channel response to the removal of the Pilchuck River Diversion Dam, Washington State

In August 2020, the 3-m tall Pilchuck River Diversion Dam was removed from the Pilchuck River, allowing free fish passage to the upper third of the watershed for the first time in over a century. The narrow, 300-m long impoundment behind the dam was estimated to hold 4,000–7,500 m3 of sand and gravel, representing less than one year's typical bedload flux. Repeat cross section surveys...
Authors
Scott W. Anderson, Brett Shattuck, Neil Shea, Catherine M. Seguin, Joe J. Miles, Derek Marks, Natasha Coumou

Documenting historical anchorworm parasitism of introduced warmwater fishes in the Willamette River Basin, Oregon Documenting historical anchorworm parasitism of introduced warmwater fishes in the Willamette River Basin, Oregon

Anchorworms (Lernaea spp.) are freshwater parasitic copepods that use a wide range of hosts. Yet little is known about their prevalence, distribution, and which species are their primary fish hosts in the state of Oregon. Institutional fish collections serve as banks which allow investigators to look at historical fish specimens and ascertain their health status at the time of their...
Authors
Elena Eberhardt, Christina Amy Murphy, William J. Gerth, Peter Konstantinidis, Ivan Arismendi

Fish size structure analysis via ordination: A visualization aid Fish size structure analysis via ordination: A visualization aid

Objective Visual aids like length-frequency histograms are widely used to examine fish population status and trends; however, comparing multiple histograms simultaneously becomes cumbersome and inefficient. Complicating matters further, overlaying covariates on histograms to highlight connections with length frequencies can be challenging. An alternative, and the subject of this...
Authors
Leandro E. Miranda

Demographics of a previously undocumented diamondback terrapin (Malaclemys terrapin) population Demographics of a previously undocumented diamondback terrapin (Malaclemys terrapin) population

Coastal habitats are some of the most imperiled due to climate change and anthropogenic activities. As such, it is important to understand population dynamics of the species that may play a role in regulating coastal systems. Diamondback terrapins in Northwest Florida have been understudied, which has resulted in a gap in our knowledge for this region. To help fill this gap, we conducted...
Authors
Daniel J. Catizone, Travis M. Thomas, Christina Romagosa, Margaret Lamont
Was this page helpful?