An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
... The Women, Infants, and Children (WIC) Program has changed its food benefit issuance method from paper vouchers to electronic benefit transfer (EBT). WIC participation among the eligible population base has been declining since 2010, and EBT has been viewed as a way to arrest the decline. We utilize county-level WIC data from Oklahoma to analyze the impact of EBT on participation and food cost. We ...
... Our examination of the documentary film Reencuentros: 2501 migrantes (translated as 2501 Migrants: A Journey) contributes to scholarship connecting film geographies to critical geopolitics, accounting for affect, and attending to documentary films. We augment this literature with the concepts of Indigenous geopolitics and decolonial affect. After an abridged introduction to Yolanda Cruz, the Chati ...
Oklahoma, etc ; deformation; earthquakes; geophysics; research; Show all 5 Subjects
Abstract:
... To better quantify how injection, prior seismicity, and fault properties control rupture growth and propagation of induced earthquakes, we perform a finite‐fault slip inversion on a Mw 4.0 earthquake that occurred in April 2015, the largest earthquake in an induced sequence near Guthrie, Oklahoma. The slip inversion reveals a rupture with slip patches that are anti‐correlated to the locations of p ...
... We tested the restricted movement paradigm (RMP) for heterogeneous movement within populations using plains killifish (Fundulus zebrinus) in the Red River on the border of Texas and Oklahoma. During June–August 2020, we marked 564 plains killifish within a 5-km stream segment and recaptured 23 individuals. Recaptured individuals spent on average 17.3 days at large, moved on average 178.2 m/day, an ...
Oklahoma, etc ; earthquakes; geodesy; geophysics; research; stress relaxation; Show all 6 Subjects
Abstract:
... The interaction of aseismic and seismic slip before and after an earthquake is fundamental for both earthquake nucleation and postseismic stress relaxation. However, it can be difficult to determine where and when aseismic slip occurs within the seismogenic zone because geodetic techniques are limited to detecting moderate to large slip amplitudes or long duration small slip amplitudes. Here, we u ...
Oklahoma, etc ; entomologists; goats; grazing; historical records; pastures; ticks; Show all 7 Subjects
Abstract:
... Historical records of five genera and 11 species of ticks were reported on domestic goats in the United States in literature published before 1951. In a field-based collection from random goats and pastures in eastern Oklahoma, we collected three species and three life stages of ticks. Ticks were collected throughout the year from domestic goats even when they were not collected in pastures. ...
Oklahoma, etc ; Melanoplus; Trimerotropis; entomologists; grasslands; inventories; museums; rangelands; Show all 8 Subjects
Abstract:
... Short-horned grasshoppers are important constituents of grassland ecosystems, with some species causing substantial damage to rangeland. A statewide, comprehensive inventory between 1959 and 1961 listed 117 species from Oklahoma with 2,101 county records documented. From June 2019 through October 2020, short-horned grasshoppers were surveyed in all 77 Oklahoma counties. The surveys, combined with ...
Oklahoma, etc ; agriculture; center pivot irrigation; soil; transpiration; water stress; Show all 6 Subjects
Abstract:
... Nonuniform application of water through center pivots can lead to under- or over-irrigation at parts of the field, which can lead to water stress and yield reductions or loss of limited water resources and leaching of applied chemicals, respectively. In this study, irrigation uniformity tests were performed to determine the application uniformity and conveyance efficiency of 24 center pivots in we ...
Oklahoma, etc ; altitude; evolution; meteorology; statistics; thermodynamics; unmanned aerial vehicles; Show all 7 Subjects
Abstract:
... This study applies uncrewed aircraft systems towards the investigation of surface-layer structure during the morning transition. Three uncrewed aircraft systems simultaneously measuring horizontal transects were partnered with a fourth measuring vertical profiles during two consecutive mornings as part of the 2017 Collaboration Leading Operational Unmanned Aerial System Development for Meteorology ...
Oklahoma, etc ; Ictiobus; demographic statistics; fertilizers; humans; males; motivation; summer; surveys; Show all 9 Subjects
Abstract:
... In response to lacking information on bowfishing, bowfishers, and management planning nationwide, a survey was sent to 15,000 licensed Oklahoma anglers (bowfishers and non‐bowfishers) in 2021. Respondents (n = 1,346) were mainly male (73%) and white (74%), had an annual/5‐year license (46%) or a lifetime license (39%), and had an average age of 48 (1,182 respondents provided demographics). Questio ...
Oklahoma, etc ; Scabiosa; herbaceous plants; invasive species; prescribed burning; roadsides; Texas; Show all 7 Subjects
Abstract:
... Scabiosa atropurpurea is an invasive herbaceous plant now found in 9 states, including 19 counties in north-central Texas and 2 counties in adjacent Oklahoma. Scabiosa atropurpurea forms dense colonies along roadsides and in old agricultural fields and poses a threat to native and improved grasslands. We evaluated the response of S. atropurpurea to mowing and prescribed fire. Mowing caused a marke ...
Oklahoma, etc ; Amblyomma americanum; Rickettsia; dogs; endosymbionts; rickettsial diseases; ticks; Canada; Show all 8 Subjects
Abstract:
... In the south-central United States, several tick-borne diseases (TbDs) occur at or near their highest levels of incidence of anywhere in the U.S. The diversity of Rickettsia species found in Amblyomma americanum continues to be under-characterized in this region and throughout the U.S. and Canada where this tick species is expanding. One reason for this lack of knowledge about Rickettsia diversity ...
Oklahoma, etc ; Landsat; algae; chlorophyll; freshwater; human health; regression analysis; remote sensing; Show all 8 Subjects
Abstract:
... Algal blooms in freshwater ecosystems can negatively impact aquatic and human health. Satellite remote sensing of chlorophyll a (Chl-a) is often used to help determine the severity of algal blooms. However, satellite revisit flyover schedules may not match the erratic nature of algal blooms. Studies have paired satellite and ground-based data that were not collected on the same day, assuming Chl-a ...
Oklahoma, etc ; Blattodea; Rhinotermitidae; The Nature Conservancy; entomologists; plant litter; steel; tallgrass prairies; Show all 8 Subjects
Abstract:
... The role of microbial decay and subterranean termites (Blattodea: Isoptera: Rhinotermitidae) in loss of litter mass was evaluated on the Joseph H. Williams Tallgrass Prairie Preserve (TGPP) of The Nature Conservancy in northeastern Oklahoma. Four field sites, each consisting of four blocks of land with each block sub-divided into two plots were established. Using in-ground baiting systems, termite ...
Oklahoma, etc ; Polyodon spathula; administrative management; fish; fisheries; habitats; lakes; rivers; sonar; surveys; Show all 10 Subjects
Abstract:
... Microchemistry of sectioned dentary (lower jaw) bones was used to determine natal river (Neosho, Spring or Elk River) of paddlefish Polyodon spathula (Walbaum) in the economically important snag fishery in Grand Lake, northeastern Oklahoma, and to assess the relative importance of the tributary rivers as sources of recruits to the fishery. Geological differences between the Neosho River and Spring ...
Oklahoma, etc ; Isospora; Setophaga; new species; parasitology; research; sporozoites; Brazil; Costa Rica; Mexico; Show all 10 Subjects
Abstract:
... Isospora fitzpatricki n. sp. is described from a yellow warbler, Setophaga petechia (L.), from McCurtain County, Oklahoma, USA. Oöcysts of the new species are subspheroidal to ovoidal with a smooth bi-layered wall, measure (L × W) 24.2 × 20.4 μm, and have a length/width (L/W) ratio of 1.2; a micropyle and oöcyst residuum are both absent, but polar granule(s) are present. Sporocysts are ovoidal to ...
Oklahoma, etc ; habitats; migratory behavior; overwintering; wildlife management; Great Plains region; Lapland; Texas; Show all 8 Subjects
Abstract:
... Overwintering is a key demographic stage for migratory birds but remains poorly understood, especially among multiple declining grassland bird species. The non‐breeding ranges all 4 species of longspur (i.e., chestnut‐collared [Calcarius ornatus], Smith's [C. pictus], Lapland [C. lapponicus], thick‐billed [Rhynchophanes mccownii]) overlap in Oklahoma and the Texas Panhandle, USA, making this regio ...
Oklahoma, etc ; burn severity; data collection; remote sensing; risk; vegetation; wildland; wildland-urban interface; Show all 8 Subjects
Abstract:
... The impacts of wildfires are often intensified within the wildland-urban interface (WUI) where built structures intermingle with wildland vegetation. Because fire impacts in the WUI are high, detailed fire occurrence information is especially valuable to fire scientists and risk managers. While it is known that burned area datasets with coarse spatial resolution frequently underestimate burned are ...
Oklahoma, etc ; algorithms; computer software; confidence interval; groundwater recharge; kriging; probability analysis; rain; soil; Show all 9 Subjects
Abstract:
... Groundwater recharge estimation (GRE), particularly at a regional scale, is an important challenge in hydrogeology. Unsaturated zone flow (UZF) modeling is now being used increasingly for GRE, though its validity relies on the accurate estimation of the soil hydraulic parameters (SHPs). In this study, a regional spatial-nonstationarity-based inverse-UZF-modeling framework is developed for GRE. The ...
Oklahoma, etc ; Melanoplus; citizen science; fecundity; grasshoppers; habitat preferences; parasitoids; surveys; Arkansas; Kansas; Missouri; Show all 11 Subjects
Abstract:
... Melanoplus macclungi Rehn, 1946 is a little-known grasshopper originally recorded from Sun City, Kansas. As part of a survey of Oklahoma grasshoppers, we also collected this species throughout western Oklahoma, and northeast Arkansas. Analysis of citizen science data resulted in additional records for M. macclungi in central Arkansas and southwest Missouri. We have also recorded information on hab ...