The Anthropocene as an event, not an epoch
Philip Gibbard, Michael J.C. Walker, Andrew M Bauer, Matthew Edgeworth, Lucy E. Edwards, Erle C. Ellis, Stanley C. Finney, Jacqueline L Gill, Mark Maslin, Dorothy Merritts, William F Ruddiman
2022, Journal of Quaternary Science (37) 3995-399
Over the course of the last decade the concept of the Anthropocene has become widely established within and beyond the geoscientific literature but its boundaries remain undefined. Formal definition of the Anthropocene as a chronostratigraphical series and geochronological epoch following the Holocene, at a fixed horizon and with a precise...
Cooperative Fish and Wildlife Research Units program — 2021 year in review
Dawn E. Childs
2022, Circular 1491
Established in 1935, the Cooperative Fish and Wildlife Research Units program is a unique cooperative partnership among State fish and wildlife agencies, universities, the Wildlife Management Institute, the U.S. Fish and Wildlife Service, and the U.S. Geological Survey. Designed to meet the scientific needs of natural resource management agencies and...
Greater than the sum of its parts: Computationally flexible Bayesian hierarchical modeling
Devin S. Johnson, Brian M. Brost, Mevin Hooten
2022, Journal of Agricultural, Biological and Environmental Statistics (27) 400
We propose a multistage method for making inference at all levels of a Bayesian hierarchical model (BHM) using natural data partitions to increase efficiency by allowing computations to take place in parallel form using software that is most appropriate for each data partition. The full hierarchical model is then approximated...
Nocturnal light-specific temporal partitioning facilitates coexistence for a small mesopredator, the eastern spotted skunk
Courtney J. Marneweck, Cameron R. Forehand, Charles D. Waggy, Stephen N. Harris, Todd E. Katzner, David S. Jachowski
2022, Journal of Ethology 1-6
Eastern spotted skunks are of conservation concern where competition and predation are a possible cause of their decline. Using camera traps at a food subsidy, we investigated nocturnal temporal overlap of spotted skunks with co-occurring predators. Spotted skunks were more active during dark nights, when their activity overlapped with the...
Maximizing species distribution model performance when using historical occurrences and variables of varying persistency
Jason T. Bracken, Amelie Y. Davis, Katherine M. O’Donnell, William Barichivich, Susan C. Walls, Tereza Jezkova
2022, Ecosphere (13)
Occurrence data used to build species distribution models often include historical records from locations in which the species no longer exists. When these records are paired with contemporary environmental values that no longer represent the conditions the species experienced, the model creates false associations that hurt predictive performance. The extent...
Nitrogen enrichment during soil organic matter burning and molecular evidence of maillard reactions
William Bahureksa, Robert B. Young, Amy M. McKenna, Huan Chen, Kevin A. Thorn, Fernando L. Rosario-Ortiz, Thomas Borch
2022, Environmental Science and Technology (56) 4597-4609
Wildfires in forested watersheds dramatically alter stored and labile soil organic matter (SOM) pools and the export of dissolved organic matter (DOM). Ecosystem recovery after wildfires depends on soil microbial communities and revegetation and therefore is limited by the availability of nutrients,...
Linkages between land-use change and groundwater management foster long-term resilience of water supply in California
Nathan D. Van Schmidt, Tamara Wilson, Ruth Langridge
2022, Journal of Hydrology: Regional Studies (40)
Study RegionWe created a 270-m coupled model of land-use and groundwater conditions, LUCAS-W[ater], for California’s Central Coast. This groundwater-dependent region is undergoing a dramatic reorganization of groundwater management under California’s 2014 Sustainable Groundwater Management Act (SGMA).Study FocusUnderstanding land-use and...
Advanced distributed acoustic sensing vertical seismic profile imaging of an Alaska North Slope gas hydrate field
Cullen Young, Jeffrey Shragge, Whitney Shultz, Seth S. Haines, Can Oren, James Simmons, Timothy Collett
2022, Journal of Energy and Fuels (36) 3481-3495
Gas hydrates are found in significant quantities on the North Slope of Alaska in subpermafrost sand units and intermixed in lower portions of permafrost within the hydrate stability window. While conventional surface seismic data and established imaging methods can indicate the presence of gas hydrate reservoirs,...
Geochemical and palaeomagnetic characteristics of the Vestfold Hills mafic dykes in the Prydz Bay region: implications of a Paleoproterozoic connection between East Antarctica and Proto-India
Manoj K. Pandit, Anthony Francis Pivarunas, Joseph G Meert
2022, Geological Society, London, Special Publications (518) 149-171
The Archean age granite gneiss basement along the Prydz Bay coastline in East Antarctica hosts north–south-, east–west-, NE–SW- and NW–SE-trending mafic dyke swarms in the Vestfold Hills region that intruded between 2420 and 1250 Ma. The dyke trends do not show a direct correlation with the dyke geochemistry but can...
Idaho and Landsat
U.S. Geological Survey
2022, Fact Sheet 2022-3013
Idaho may be popular for potatoes, but the State’s richness also lies in its scenery and natural resources. Its terrain varies from mountains, rivers, and waterfalls to forests, volcanic rock, and hot springs. A growing population gives Idaho even more reason to use the best information available to serve the...
The effects of requested flows for native fish on sediment dynamics, geomorphology, and riparian vegetation for the Green River in Canyonlands National Park, Utah
Paul E. Grams, Jonathan M. Friedman, David J. Dean, David J. Topping
2022, Open-File Report 2022-1019
Releases of water from Flaming Gorge Dam together with climate-related variations in runoff determine the streamflow regime of the Green River, which affects the physical characteristics of the channel and riparian ecosystem of the Green River corridor in Canyonlands National Park. The dam has decreased peak streamflows and raised base...
Virtual training prepared for the former Afghanistan Ministry of Energy and Water—Streamgaging, fluvial sediment sampling, bathymetry, and streamflow and sediment modeling
Joel T. Groten, Joshua F. Valder, Brenda K. Densmore, Logan W. Neal, Justin Krahulik, Thomas J. Mack
2022, Fact Sheet 2022-3014
The U.S. Geological Survey (USGS) created a virtual training series for the Afghanistan Ministry of Energy and Water (MEW), now known as the National Water Affairs Regulation Authority (NWARA), to provide critical hydrological training as an alternative to an in-person training. The USGS was scheduled to provide in-person surface-water training...
Woody plant encroachment of grassland and the reversibility of shrub dominance: Erosion, fire, and feedback processes
Junran Li, Sujith Ravi, Guan Wang, R. Scott Van Pelt, Thomas E. Gill, Joel B. Sankey
2022, Ecosphere (13)
Many grass-dominated ecosystems in dryland regions have experienced increasing woody plant density and abundance during the past century. In many cases, this process has led to land degradation and declines in ecosystem functions. An example is the Chihuahuan Desert in the southwestern United States, which experienced different stages of shrub...
Porewater chemistry of Louisiana marshes with contrasting salinities and its implications for coastal acidification
Songjie He, Kanchan Maiti, Christopher Swarzenski, Tracy Elsey-Quirk, Gina Groseclose, Dubravko Justic
2022, Estuarine, Coastal and Shelf Science (268)
Dissolved inorganic carbon (DIC) and total alkalinity (TA) are fundamental components of carbonate systems that control pH and buffering capacity of the receiving water body. Three coastal marshes with contrasting salinities in Barataria Basin, Louisiana, USA, were sampled to understand seasonal changes in porewater carbonate chemistry and its impact on...
Patterns of parental care and movement in divided broods of golden-winged warblers
Sean M. Peterson, Henry M. Streby, Gunnar R. Kramer, Jared M. Feura, David E. Andersen
2022, Journal of Avian Biology (2022)
Post-fledging brood division is a poorly understood, yet widespread suite of avian behaviours that includes both division of parental care and spatial division of a brood. For most species, the differences in parental care between adult males and females and the behavioural mechanisms explaining spatial patterns...
Very low frequency earthquakes in between the seismogenic and tremor zones in Cascadia?
Wenyuan Fan, Andrew J. Barbour, Jeffrey J. McGuire, Yihe Huang, Guoqing Lin, Elizabeth S. Cochran, Ryo Okuwaki
2022, AGU Advances (3)
Megathrust earthquakes and their associated tsunamis cause some of the worst natural disasters. In addition to earthquakes, a wide range of slip behaviors are present at subduction zones, including slow earthquakes that span multiple orders of spatial and temporal scales. Understanding these events may shed light on...
Dual resistance to Flavobacterium psychrophilum and Myxobolus cerebralis in rainbow trout (Oncorhynchus mykiss, Walbaum)
Brian W. Avila, Dana L. Winkelman, Eric R. Fetherman
2022, Journal of Fish Diseases (45) 801-813
Aquatic pathogens are a major concern for fish hatchery production, fisheries management, and conservation, and disease control needs to be addressed. Two important salmonid pathogens are Myxobolus cerebralis and Flavobacterium psychrophilum that cause whirling disease and bacterial coldwater disease (BCWD), respectively. Innate disease resistance is a potential option for...
Significance of U-Pb detrital zircon geochronology for mudstone provenance
Paul Sylvester, Amanda Souders, Rui Liu
2022, Geology (50) 670-675
Detrital zircon U-Pb studies of mudstone provenance are rare but may preferentially fingerprint distal zircon sources. To examine this issue, Pierre Shale and Trinidad Sandstone deposited in a Late Cretaceous deltaic environment in the Raton Basin, Colorado (USA), were measured for detrital zircon U-Pb age by laser ablation–inductively coupled plasma–mass...
The cost of avoiding predators: A bioenergetic analysis of diel vertical migration by the opossum shrimp Mysis diluviana
Steven R. Chipps, David H. Bennett, David Deslauriers, Lars G. Rudstam
2022, Hydrobiologia (849) 1871-1884
The freshwater opossum shrimp Mysis diluviana can undergo extensive diel vertical migration (DVM) to feed in shallow, prey rich strata at night. Bright moonlight limits their night-time migration presumably due to predator avoidance. Using a linked, foraging-bioenergetics model, we evaluated the cost of avoiding predators by simulating the effects of prey density, water temperature, and...
Draft genome sequence of a novel calicivirus from a brown bullhead (Ameiurus nebulosus) from Lake Memphremagog, Vermont/Quebec
Luke R. Iwanowicz, Vicki S. Blazer, Tom Jones, Matthew Bodnar, Korin Ekholm, Julie Dragon, Peter Emmerson
2022, Microbiology Resource Announcements (11)
We report a draft genome sequence of a previously undescribed calicivirus from a single brown bullhead inhabiting Lake Memphremagog, Vermont/Quebec. The genome is 7,413 nucleotides long and is most similar to the Atlantic salmon calicivirus (nucleotide identity; 64.7%)....
Survival of white-tailed deer fawns on Marine Corps Base Quantico
Gisele R. Aubin, Christa C. Nye, John H. Rohm, R.T. Stamps, W. Mark Ford, Michael J. Cherry
2022, The Journal of Wildlife Management (86)
Some jurisdictions in the eastern United States have reduced harvest of white-tailed deer (Odocoileus virginianus) because of perceived declines in recruitment and population size over the last decade. Although the restoration of American black bears (Ursus americanus) and the colonization of coyotes (Canis latrans) have increased fawn predation in some...
Landslides in Minnesota
Stephen B. DeLong, Carrie E. Jennings, Karen B. Gran
2022, Fact Sheet 2022-3007
Landslides in Minnesota have caused loss of life, damaged infrastructure, and negatively affected Minnesota’s natural resources. Landslides increase the amount of sediment contributed to lakes and rivers, with negative consequences for water quality and aquatic habitats. Recent mapping reveals that landslide susceptible areas within Minnesota primarily occur on steep slopes...
Multi-scale patterns in occurrence of an ephemeral pool-breeding amphibian
Brian J. Halstead, Jonathan P. Rose, Denise Clark, Patrick M. Kleeman, Robert N. Fisher
2022, Ecosphere (13)
Species distributions are governed by processes occurring at multiple spatial scales. For species with complex life cycles, the needs of all life stages must be met within the dispersal limitations of the species. Multi-scale processes can be particularly important for these species, where small-scale patterns in specific habitat components can...
Comparison of electrofishing and PIT antennas for detection of hatchery-reared Roundtail Chub (Gila robusta) stocked into a desert stream
Laura A. Tennant, David Ward, Alice C. Gibb
2022, Journal of the Arizona-Nevada Academy of Science (49) 116-126
Stocking of rare native fishes for conservation purposes is a common practice in the southwestern United States. Monitoring typically occurs after hatchery-reared fish are released to assess post-stocking movement and survival. We conducted a two-year study, in which tow-barge electrofishing and portable, flat-bed passive integrated transponder (PIT) antennas...
Deep learning detection and recognition of spot elevations on historic topographic maps
Samantha Arundel, Trenton P. Morgan, Philip T. Thiem
Yao-Yi Chiang, editor(s)
2022, Frontiers in Environmental Science (10) 1-10
Some information contained in historical topographic maps has yet to be captured digitally, which limits the ability to automatically query such data. For example, U.S. Geological Survey’s historical topographic map collection (HTMC) displays millions of spot elevations at locations that were carefully chosen to best represent the terrain at the...
