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Filter Total Items: 171137

Eimeria albigulae (Apicomplexa: Eimeriidae): New host and distributional record from the Bryant's woodrat, Neotoma bryanti (Rodentia: Cricetidae), from California, U.S.A.

Fecal samples, collected in July 2020 and April–May 2021 from 17 Bryant's woodrats, Neotoma bryanti Merriam, from 3 sites in San Diego, Orange, and San Bernardino counties, California, were examined for coccidial parasites. Three of 8 (38%) woodrats from a single site in San Diego County were found to be passing oocysts of Eimeria albigulae Levine, Ivens, and Kruidenier, 1957. Subspheroidal oocyst
Authors
Chris T. McAllister, John A. Hnida, Robert N. Fisher

NABat ML: Utilizing deep learning to enable crowdsourced development of automated, scalable solutions for documenting North American bat populations

Bats play crucial ecological roles and provide valuable ecosystem services, yet many populations face serious threats from various ecological disturbances. The North American Bat Monitoring Program (NABat) aims to use its technology infrastructure to assess status and trends of bat populations, while developing innovative and community-driven conservation solutions.Here, we present NABat ML, an au
Authors
Ali Khalighifar, Benjamin S. Gotthold, Erin Adams, Jenny K. Barnett, Laura O. Beard, Eric R. Britzke, Paul A. Burger, Kimberly Chase, Zackary Cordes, Paul M. Cryan, Emily Ferrall, Christopher T. Fill, Scott E. Gibson, G. Scott Haulton, Kathryn Irvine, Lara S. Katz, William L. Kendall, Christen A. Long, Oisin Mac Aodha, Tessa McBurney, Sarah McCarthy-Neumann, Matthew W. McKown, Joy O’Keefe, Lucy D. Patterson, Kristopher A. Pitcher, Matthew Rustand, Jordi L. Segers, Kyle Seppanen, Jeremy L. Siemers, Christian Stratton, Bethany Straw, Theodore J. Weller, Brian Reichert

System characterization report on the Amazônia-1 multispectral sensor

Executive SummaryThis report addresses system characterization of the Instituto Nacional de Pesquisas Espaciais Amazônia-1 satellite and is part of a series of system characterization reports produced and delivered by the U.S. Geological Survey Earth Resources Observation and Science Cal/Val Center of Excellence. These reports present and detail the methodology and procedures for characterization;
Authors
James C. Vrabel, Gregory L. Stensaas, Cody Anderson, Jon Christopherson, Minsu Kim, Seonkyung Park

Water-quality data and trends in the Rapid Creek Basin, South Dakota, 1970–2020

Surface-water-quality data in the Rapid Creek Basin in South Dakota were compiled to assess basic trends in the water quality of Rapid Creek. Spatial and temporal patterns in water quality were described for major ions, sediment, total suspended solids, nutrients, field measurements, bacteria, and select metals for the period of 1970–2020, and a water-quality trend analysis was completed for sites
Authors
Wyatt S. Tatge, Galen K. Hoogestraat, Rochelle A. Nustad

Mismatches in scale between highly mobile marine megafauna and marine protected areas

Marine protected areas (MPAs), particularly large MPAs, are increasing in number and size around the globe in part to facilitate the conservation of marine megafauna under the assumption that large-scale MPAs better align with vagile life histories; however, this alignment is not well established. Using a global tracking dataset from 36 species across five taxa, chosen to reflect the span of home
Authors
Melinda G. Conners, Nicholas B. Sisson, Pierre D. Agamboue, Philip W. Atkinson, Alastair M. M. Baylis, Scott R. Benson, Barbara A. Block, Steven J. Bograd, Pablo Bordino, W. D. Bowen, Paul Brickle, Ignacio M. Bruno, Victoria González Carman, Cory D. Champagne, Daniel E. Crocker, Daniel P. Costa, Tiffany M. Dawson, Tomo Deguchi, Heidi Dewar, Philip D. Doherty, Tomoharu Eguchi, Angela Formia, Brendan J. Godley, Rachel T. Graham, Christian Gredzens, Kristen Hart, Lucy A. Hawkes, Suzanne Henderson, Robert William Henry, Luis A. Hückstädt, Ladd M. Irvine, Sarah S. Kienle, Carey E. Kuhn, Damian Lidgard, Stephanie A. Loredo, Bruce R. Mate, Kristian Metcalfe, Jacob Nzegoue, Carmen K. Kouerey Oliwina, Rachael A. Orben, Kiyoaki Ozaki, Richard Parnell, Elizabeth P. Pike, Patrick W. Robinson, Howard C. Rosenbaum, Fumio Sato, Scott A. Shaffer, Donna J. Shaver, Samantha E. Simmons, Brian J. Smith, Guy-Philippe Sounguet, Robert M. Suryan, David R. Thompson, Megan Tierney, Dominic Tilley, Hillary S. Young, Victoria Warwick-Evans, Michael J. Weise, Randall S. Wells, Bradley P. Wilkinson, Matthew J. Witt, Sara M. Maxwell

Urbanization and stream ecology: Moving the bar on multidisciplinary solutions to wicked urban stream problems

Decades of research on the effects of urbanization on stream ecology have shown that urban stream problems are inherently wicked. These problems are wicked in the sense that they are difficult to solve because information is incomplete, changing, or conflicting and because finding potential solutions often requires input from stakeholders who can have conflicting and competing values. The 5th Symp
Authors
Megan L. Fork, Kristina G. Hopkins, Jessica Chappell, Robert J. Hawley, Sujay S. Kaushal, Brian M. Murphy, Blanca Ríos-Touma, Allison H. Roy

Magnetotelluric investigations of the Kīlauea Volcano, Hawaii

In 2002 and 2003 a collaborative effort was undertaken between Lawrence Berkeley National Laboratory, Sandia National Laboratories, the U.S. Geological Survey (USGS) Menlo Park, the USGS Hawaiian Volcano Observatory, and Electromagnetic Instruments Inc. to study the Kīlauea volcano in Hawaii using the magnetotelluric (MT) technique. The work was motivated by a desire to improve understanding of th
Authors
G.M. Hoversten, Erika Gasperikova, Randall Mackie, David Myer, James P. Kauahikaua, Greg A. Newman, Nestor Cuevas

GSPy: A new toolbox and data standard for Geophysical Datasets

The diversity of geophysical methods and datatypes, as well as the isolated nature of various specialties (e.g., electromagnetic, seismic, potential fields) leads to a profusion of separate data file formats and documentation conventions. This can hinder cooperation and reduce the impact of datasets researchers have invested in heavily to collect and prepare. An open, portable, and well-supported
Authors
Stephanie R. James, Nathan Leon Foks, Burke J. Minsley

Relative sea-level change in South Florida during the past ~5000 years

A paucity of detailed relative sea-level (RSL) reconstructions from low latitudes hinders efforts to understand the global, regional, and local processes that cause RSL change. We reconstruct RSL change during the past ~5 ka using cores of mangrove peat at two sites (Snipe Key and Swan Key) in the Florida Keys. Remote sensing and field surveys established the relationship between peat-forming mang
Authors
Nicole S. Khan, Erica L. Ashe, Ryan P. Moyer, Andrew C. Kemp, Simon E. Engelhart, Matthew J. Brain, Lauren Toth, Amanda R. Chappel, Margaret Christie, Robert E. Kopp, Benjamin P. Horton

Subsampling large-scale digital elevation models to expedite geospatial analyses in coastal regions

Large-area, high-resolution digital elevation models (DEMs) created from light detection and ranging (LIDAR) and/or multibeam echosounder data sets are commonly used in many scientific disciplines. These DEMs can span thousands of square kilometers, typically with a spatial resolution of 1 m or finer, and can be difficult to process and analyze without specialized computers and software. Such DEMs

Authors
Kelly Ann Murphy, David G. Zawada, Kimberly K. Yates

Achieving sub-nanoTesla precision in multirotor UAV aeromagnetic surveys

An uncrewed aerial vehicle (UAV) multirotor aeromagnetic system using a 5-m sling load for a magnetic sensor system is described and characterized. Four magnetic surveys with identical flight lines were completed, at two nominal altitudes of 25 and 40 m. The surveys were used to assess the repeatability of data collected with the described UAV aeromagnetic system, and comparison with a ground surv
Authors
Geoffrey Phelps, Robert E. Bracken, John Spritzer, David S. White

Whole-ecosystem experiment illustrates short timescale hydrodynamic, light, and nutrient control of primary production in a terminal slough

Estuaries are among the most productive of aquatic ecosystems. Yet the collective understanding of patterns and drivers of primary production in estuaries is incomplete, in part due to complex hydrodynamics and multiple controlling factors that vary at a range of temporal and spatial scales. A whole-ecosystem experiment was conducted in a deep, pelagically dominated terminal channel of the Sacrame
Authors
Luke C. Loken, Steven Sadro, Leah Lenoch, Paul Stumpner, Randy A Dahlgren, Jon R. Burau, Erwin E Van Nieuwenhuyse