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: 175538

Same view through a different lens: Comparing population trends for North American birds using eBird and the Breeding Bird Survey Same view through a different lens: Comparing population trends for North American birds using eBird and the Breeding Bird Survey

Confidently estimating population trends is of vital importance for a wide range of ecological, conservation, and management applications. North America has 2 major data sources for estimating population trends of breeding birds—the North American Breeding Bird Survey (BBS) and the global participatory science project eBird. Because the surveys differ in protocols, coverage, and data...
Authors
Orin J. Robinson, Alison J. Johnston, Wesley M. Hochachka, J. A. Hostetler, John R. Sauer, Tom Auer, Matthew E. Strimas-Mackey, Shawn Ligocki, Nicholas A. Faraco-Hadlock, Viviana Ruiz-Gutierrez, Amanda D. Rodewald, Daniel Fink

Reconciliation of geochronology and paleozoogeography for Quaternary marine terraces, San Luis Obispo Bay area, California, USA Reconciliation of geochronology and paleozoogeography for Quaternary marine terraces, San Luis Obispo Bay area, California, USA

In the San Luis Obispo Bay area of central California, interpretations of marine terrace ages have been hampered by inconsistent results from geochronological indicators (U-series ages of corals and correlations using amino acid racemization of mollusks) and seemingly contradictory paleozoogeographic aspects of fossil faunal assemblages. New U-series ages of corals, amino acid data from...
Authors
Daniel R. Muhs, Lindsey T. Groves, R. Randall Schumann, Jordon Bright

Exploring the use of non-invasive drone-based Ground Penetrating Radar (GPR) to characterize biogenic gas dynamics in subtropical peat soils Exploring the use of non-invasive drone-based Ground Penetrating Radar (GPR) to characterize biogenic gas dynamics in subtropical peat soils

Peat soils are a critical component of the global carbon cycle as natural producers of biogenic greenhouse gases (e.g., methane and carbon dioxide) that accumulate within the soil matrix and are episodically released to the atmosphere. Previous studies have showed the unique ability of ground-based minimally-invasive geophysical methods like ground-penetrating radar (GPR) to characterize...
Authors
Xavier Comas, Neil C. Terry, Md Rejeun Islam, David Brodylo, Caiyun Zhang

Quantifying depuration of methylmercury from fish consumption by travelers Quantifying depuration of methylmercury from fish consumption by travelers

During a two-week field sampling expedition in Gabon, two American scientists consumed fish daily from the Ogooué River watershed. We sampled their scalp and facial hair periodically to evaluate hair as a biomarker to track shifts in methylmercury (MeHg) exposure from diet. Each individual differed in the onset and extent of MeHg accumulation but showed similar depuration rates. Pretrip...
Authors
Ryan F. Lepak, Jean H. Mve Beh, Clotaire Moukegni-Sika, Jean N.B. Binguema, Sarah E. Janssen, Jacob M. Ogorek, Michael Tate, Peter B. McIntyre

Gas bubble trauma progression and mortality in sculpin, threespine stickleback, and Northern pikeminnow Gas bubble trauma progression and mortality in sculpin, threespine stickleback, and Northern pikeminnow

We examined the progression of gas bubble trauma (GBT) and associated mortality in sculpin (Cottus spp.), threespine stickleback (Gasterosteus aculeatus), and Northern pikeminnow (Ptychocheilus oregonensis) exposed to three levels of total dissolved gas (TDG; 120, 125, and 130% saturation) in laboratory experiments. Sculpin were most sensitive to elevated TDG followed by stickleback and...
Authors
Kenneth F. Tiffan, Brad D. Liedtke

High-precision earthquake catalog for Minto Flats fault zone, central Alaska, reveals complex and conjugate faulting High-precision earthquake catalog for Minto Flats fault zone, central Alaska, reveals complex and conjugate faulting

The Minto Flats fault zone (MFFZ) in central Alaska is a left‐lateral strike‐slip fault system situated between the continental‐scale right‐lateral Denali and Kaltag‐Tintina faults. The MFFZ has the potential to generate magnitude 7 earthquakes, and it hosted a magnitude 6 earthquake in 1995. It has also produced exotic events, such as very‐low‐frequency earthquakes and nucleation...
Authors
Nealey E. Sims, Carl Tape, Natalia A. Ruppert, Michael E. West
Was this page helpful?