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Deep-ocean macrofaunal assemblages on ferromanganese and phosphorite-rich substrates in the Southern California Borderland Deep-ocean macrofaunal assemblages on ferromanganese and phosphorite-rich substrates in the Southern California Borderland
Mineral-rich hardgrounds, such as ferromanganese (FeMn) crusts and phosphorites, occur on seamounts and continental margins, gaining attention for their resource potential due to their enrichment in valuable metals in some regions. This study focuses on the Southern California Borderland (SCB), an area characterized by uneven and heterogeneous topography featuring FeMn crusts...
Authors
Michelle Guraieb, Guillermo F Mendoza, Kira Mizell, Gregory W. Rouse, R.A. McCarthy, Olivia S. Pereira, Lisa A. Levin
Detecting trajectories of regime shifts and loss of resilience in coastal wetlands using remote sensing Detecting trajectories of regime shifts and loss of resilience in coastal wetlands using remote sensing
Many freshwater forested wetlands along the southeastern United States coastline are rapidly transitioning from forest to marsh or open water, due to climate change-related disturbances. Recent studies have found early warning signals (EWS) of regime shifts in other ecosystems, but it is unclear if these can be detected for coastal wetlands. In this study, we examined the ability to...
Authors
Melinda Martinez, Marcelo L Ardon, Joshua Gray
Early detection of wildlife disease pathogens using CRISPR-Cas system methods Early detection of wildlife disease pathogens using CRISPR-Cas system methods
Wildlife diseases are a considerable threat to human health, conservation, and the economy. Surveillance is a critical component to mitigate the impact of animal diseases in these sectors. To monitor human diseases, CRISPR-Cas (clustered regularly interspaced short palindromic repeats-CRISPR-associated protein) biosensors have proven instrumental as diagnostic tools capable of detecting...
Authors
Adam Alberto Perez, Guelaguetza Vazquez-Meves, Margaret Hunter
Sand supply to San Francisco Bay from the Sacramento and San Joaquin Rivers of the Central Valley, California Sand supply to San Francisco Bay from the Sacramento and San Joaquin Rivers of the Central Valley, California
Sediment from the Central Valley via the Sacramento-San Joaquin Delta (Delta) and Suisun Bay is a primary source of sand to San Francisco Bay, California. Sand is mined from San Francisco Bay for commercial purposes, such as for use in concrete for construction. To better understand the supply of sand to Suisun Bay and San Francisco Bay, the U.S. Geological Survey (USGS), in cooperation...
Authors
Mathieu D. Marineau, David Hart, Christopher P. Ely, Lester McKee
Patterns and drivers of cottonwood mortality in the middle Rio Grande, New Mexico, USA Patterns and drivers of cottonwood mortality in the middle Rio Grande, New Mexico, USA
Riparian ecosystems are some of the most valuable and vulnerable on the planet. Riparian tree mortality is increasing in the western United States, where altered streamflows are combining with warming climate. Between 2011 and 2013, one third of an extensive stand of Populus deltoides var. wislizeni (Rio Grande cottonwood) died along the middle Rio Grande on the Pueblo of Santa Ana in...
Authors
Hannah Varani, Ellis Q. Margolis, Esteban H. Muldavin, William T. Pockman
Use of continuous water-quality time-series data to compute total phosphorus concentrations and loads for the Missouri River at St. Joseph and Hermann, Missouri, 2007–22 Use of continuous water-quality time-series data to compute total phosphorus concentrations and loads for the Missouri River at St. Joseph and Hermann, Missouri, 2007–22
In support of Missouri’s Nutrient Loss Reduction Strategy, which was created to reduce the nutrient contamination of Missouri’s waterways from point and nonpoint sources, total phosphorus concentrations and loads were computed for the Missouri River at St. Joseph, Missouri, streamgage (U.S. Geological Survey station 06818000) and the Missouri River at Hermann, Mo., streamgage (U.S...
Authors
Kendra M. Markland
Field geology under the sea with a remotely operated vehicle: Mona Rift, Puerto Rico Field geology under the sea with a remotely operated vehicle: Mona Rift, Puerto Rico
We implemented concepts of field geology at great ocean depths by constructing virtual outcrops from a string of overlapping video frames collected by remotely operated vehicles (ROVs). This lower-cost alternative to drilling boreholes allows stratigraphic extension into the offshore and regional interpretation of marine seismic profiles. The imagery was collected along a dive transect...
Authors
Uri S. ten Brink, Or M. Bialik, Jason Chaytor, Claudia Flores, Marcie Purkey Phillips
Penguin colony georegistration using camera pose estimation and phototourism Penguin colony georegistration using camera pose estimation and phototourism
Satellite-based remote sensing and uncrewed aerial imagery play increasingly important roles in the mapping of wildlife populations and wildlife habitat, but the availability of imagery has been limited in remote areas. At the same time, ecotourism is a rapidly growing industry and can yield a vast catalog of photographs that could be harnessed for monitoring purposes, but the inherently...
Authors
Haoyu Wu, Clare Flynn, Carole Hall, Christian Joseph Che-Castaldo, Dimitris Samaras, Mathew Schwaller, Heather J. Lynch
Assessment of undiscovered conventional oil and gas resources in the Norphlet Formation, U.S. Gulf Coast region, 2023 Assessment of undiscovered conventional oil and gas resources in the Norphlet Formation, U.S. Gulf Coast region, 2023
Using a geology-based assessment methodology, the U.S. Geological Survey (USGS) estimated undiscovered, technically recoverable mean resources of 16 million barrels of oil and 348 billion cubic feet of gas in conventional reservoirs of the Norphlet Formation in the U.S. Gulf Coast region.
Authors
John W. Counts, William H. Craddock, Jared T. Gooley, Marc L. Buursink, Tracey J. Mercier, Cheryl A. Woodall, Christopher J. Schenk
Density estimation using spatial capture-recapture analyses: Application to vaccination of prairie dogs against sylvatic plague Density estimation using spatial capture-recapture analyses: Application to vaccination of prairie dogs against sylvatic plague
Prairie dogs are notoriously difficult to enumerate, with previously methods including visual counts, mark-resight, burrow counts, and catch per unit effort. Unlike those methods, spatial capture-recapture (SCR) analyses allow for formal estimation of density along with associated estimates of uncertainty, detection probability, and the size of the average area over which an individual...
Authors
Robin E. Russell, Dan W. Tripp, Katherine Richgels, Tonie E. Rocke
Spatial distribution patterns of invasive silver carp can inform removal efforts in an oxbow lake of the Mississippi River Spatial distribution patterns of invasive silver carp can inform removal efforts in an oxbow lake of the Mississippi River
Oxbow lakes are highly productive waterbodies that host multiple life stages of many freshwater aquatic species. These lakes also provide foraging and rearing habitat to the invasive silver carp (Hypophthalmichthys molitrix) enabling populations to grow in biomass and abundance that can add propagule pressure to connected waterways and oxbows within the Mississippi River Basin...
Authors
Jordan C. Besson, Leandro E. Miranda, Michael E. Colvin, Corey Garland Dunn, Dennis K. Riecke
Identifying and filling critical knowledge gaps can optimize financial viability of blue carbon projects in tidal wetlands Identifying and filling critical knowledge gaps can optimize financial viability of blue carbon projects in tidal wetlands
One of the world’s largest “blue carbon” ecosystems, Louisiana’s tidal wetlands on the US Gulf of Mexico coast, is rapidly being lost. Louisiana’s strong legal, regulatory, and monitoring framework, developed for one of the world’s largest tidal wetland systems, provides an opportunity for a programmatic approach to blue carbon accreditation to support restoration of these ecologically...
Authors
Tim J.B. Carruthers, S. Beaux Jones, Megan K. Terrell, Jonathan F. Scheibly, Brendan J. Player, Valerie A. Black, Justin R. Ehrenwerth, Patrick D. Biber, Rod M. Connolly, Steve Crooks, Jason P. Curole, Kelly M. Darnell, Alyssa M. Dausman, Allison L. DeJong, Shawn M. Doyle, Christopher R. Esposito, Daniel A. Friess, James W. Fourqurean, Ioannis Y. Georgiou, Gabriel D. Grimsditch, Songjie He, Eva R. Hillmann, Guerry O. Holm, Jennifer Howard, Hoonshin Jung, Stacy D. Jupiter, Erin P. Kiskaddon, Ken Krauss, Paul S. Lavery, Bingqing Liu, Catherine E. Lovelock, Sarah K. Mack, Peter I. Macreadie, Karen J. McGlathery, J. Patrick Megonigal, Brian J. Roberts, Scott Settelmyer, Lorie W. Staver, Hilary J. Stevens, Ariana Eileen Sutton-Grier, Jorge A. Villa, John R. White, Michelle Waycott