U.S. flag

An official website of the United States government

PubAg

Main content area

You searched for: Subject "Southwestern United States" Remove constraint Subject: "Southwestern United States"
Start Over

Search

689  Search Results

« Previous | 1 - 20 of 689 |
Number of results to display per page

Search Results

1. Alypiodes flavilinguis Grote, 1883 as a Valid Species (Noctuidae, Agaristinae)

Author:
Gruber, John W.; Matson, Tanner A.; Wagner, David L.
Source:
Journal of the Lepidopterists' Society 2021 v.75 no.2 pp. 81-87
ISSN:
0024-0966
Subject:
Southwestern United States,   etc   ; ; DNA barcoding; Noctuidae; adults; female genitalia; larvae; males; Mexico;     Show all 9 Subjects
Abstract:
... Alypiodes Grote currently includes four recognized species of day-flying agaristine noctuids from Mexico and the American Southwest. Here we add a fifth, elevating the name Alypiodes flavilinguisGrote 1883rev. status from synonymy. DNA barcodes, larval characters, and adult markings that reliably differentiate Alypiodes flavilinguis from Alypiodes bimaculata and other species in the genus are enum ...
DOI:
10.18473/lepi.75i2.a1

2. History of indigenous Trypanosoma cruzi infection in humans, animals and triatomines in California, USA

Author:
Dye‐Braumuller, Kyndall C.; Lynn, Mary K.; Nolan, Melissa S.
Source:
Zoonoses and public health 2021 v.68 no.4 pp. 299-308
ISSN:
1863-1959
Subject:
Southwestern United States,   etc   ; Chagas disease; Triatominae; Trypanosoma cruzi; public health; zoonoses; California;     Show all 7 Subjects
Abstract:
... This historical review highlights previously undescribed potential foci for sylvatic and domestic locally acquired Chagas disease in California. The review starts in the 1910s, when Trypanosoma cruzi was first discovered through scientific triatomine investigations. Next, the natural transition around the mid‐1900s into clinical investigations of the domestic and peridomestic environments and thei ...
DOI:
10.1111/zph.12797

3. Influence of teleconnections on night-time minimum temperature variability in the Southwestern U.S.

Author:
Erhardt, Robert J.; Wang, Yiwei
Source:
Stochastic environmental research and risk assessment 2021 v.35 no.4 pp. 909-922
ISSN:
1436-3240
Subject:
Southwestern United States,   etc   ; autocorrelation; climate; heteroskedasticity; probability; research; risk assessment; temperature; temporal variation; variance; vegetation; weather;     Show all 12 Subjects
Abstract:
... Night-time minimum temperatures are increasing, faster than day-time maximum temperatures. They are also strongly connected to key outcomes such as health, vegetation, and crop productivity, and therefore changes in the distributions of night-time minimum temperatures have strong impacts on living systems. Night-time minimum temperatures are also related to teleconnections, which are indices that ...
DOI:
10.1007/s00477-020-01894-x

4. Monthly fluctuation of colony size and composition of the free-tailed bat Tadarida brasiliensis in the southernmost roost of Mexico

Author:
Llaven-Macías, Viridiana; Ruíz-Montoya, Lorena; López-González, Celia; Rico, Yessica; Naranjo, Eduardo J.
Source:
Mammal research 2021 v.66 no.2 pp. 339-348
ISSN:
2199-2401
Subject:
Southwestern United States,   etc   ; Tadarida; autumn; flight; mammals; nets (equipment); research; spring; summer; winter; Mexico;     Show all 11 Subjects
Abstract:
... The free-tailed bat (Tadarida brasiliensis) likely migrates from the southwestern USA and northern Mexico to the south of Mexico to spend the winter in the Cueva San Francisco (CSF), which is the southernmost known roost of the species. In this study, we examined colony size and composition of the free-tailed bats at the CSF for two annual cycles to know if these parameters fluctuate throughout th ...
DOI:
10.1007/s13364-021-00559-6

5. Earliest Record of the Bee-Mimic Robber Fly, Mallophora fautrix Osten Sacken 1887 (Diptera: Asilidae), in Louisiana

Author:
Pant, Anita; Mopper, Susan
Source:
Southeastern naturalist 2020 v.19 no.2 pp. N32
ISSN:
1528-7092
Subject:
Southwestern United States,   etc   ; Asilidae; bees; Louisiana; Mexico;     Show all 5 Subjects
Abstract:
... The charismatic bee-mimic robber fly Mallophora fautrix (Bee Killer) is distributed throughout the southwestern US and Mexico. Recent sightings of M. fautrix in Louisiana represent the easternmost reports of the species. We photographed and identified M. fautrix in north Lafayette Parish, LA, on 5 August 2015. This 2015 discovery and a second sighting in Bossier City, LA, on 28 July 2019, extend t ...
DOI:
10.1656/058.019.0219

6. What Could Explain δ13C Signatures in Biocrust Cyanobacteria of Drylands?

Author:
Stricker, Eva; Crain, Grace; Rudgers, Jenn; Sinsabaugh, Robert; Fernandes, Vanessa; Nelson, Corey; Giraldo-Silva, Ana; Garcia-Pichel, Ferran; Belnap, Jayne; Darrouzet-Nardi, Anthony
Source:
Microbial ecology 2021 v.81 no.1 pp. 134-145
ISSN:
0095-3628
Subject:
Southwestern United States,   etc   ; Bouteloua; Cyanobacteria; arid lands; biological soil crusts; carbon; community structure; grasses; leaves; microbial ecology; photosynthesis;     Show all 11 Subjects
Abstract:
... Dryland ecosystems are increasing in geographic extent and contribute greatly to interannual variability in global carbon dynamics. Disentangling interactions among dominant primary producers, including plants and autotrophic microbes, can help partition their contributions to dryland C dynamics. We measured the δ¹³C signatures of biological soil crust cyanobacteria and dominant plant species (C₃ ...
DOI:
10.1007/s00248-020-01536-3

7. Guayule (Parthenium argentatum) resin: A review of chemistry, extraction techniques, and applications

Author:
Dehghanizadeh, Mostafa; Mendoza Moreno, Paula; Sproul, Evan; Bayat, Hengameh; Quinn, Jason C.; Brewer, Catherine E.
Source:
Industrial crops and products 2021 v.165 pp. 113410
ISSN:
0926-6690
Subject:
Southwestern United States,   etc   ; Parthenium argentatum; bagasse; carbon dioxide; chemistry; commercialization; economic valuation; energy; guayule; markets; rubber; secondary metabolites; shrubs; solvents; wood preservatives; Mexico;     Show all 16 Subjects
Abstract:
... Guayule (Parthenium argentatum Gray) is a perennial shrub of the Asteraceae family native to the arid southwestern U.S. and northern Mexico that produces high-quality, hypoallergenic natural rubber. Guayule processing produces three output streams: high-molecular weight rubber as the primary product, a mixture of resin/low-molecular weight rubber, and a fine, dry woody bagasse. The goal of this re ...
DOI:
10.1016/j.indcrop.2021.113410

8. Tamm review: Sampling to estimate the frequency distribution of tree diameters or ages across large forest areas

Author:
West, P.W.
Source:
Forest ecology and management 2021 v.488 pp. 118939
ISSN:
0378-1127
Subject:
Southwestern United States,   etc   ; Populus tremuloides; administrative management; birds; forest ecology; forest inventory; forests; frequency distribution; landscapes; probability; tree age; tree and stand measurements; tree height; trees;     Show all 14 Subjects
Abstract:
... A simulation study examined what sampling methods might be appropriate in a forest inventory to estimate the frequency distribution of tree stem diameters or ages across a forest population that covers a large area. It reviews the efficacy of such inventories done in aspen (Populus tremuloides Michx.) forests in southwestern USA and uses them as a particular example. A range of frequency distribut ...
DOI:
10.1016/j.foreco.2021.118939

9. Recent land cover changes in the Southwestern US lead to an increase in surface temperature

Author:
Duman, Tomer; Huang, Cheng-Wei; Litvak, Marcy E.
Source:
Agricultural and forest meteorology 2021 v.297 pp. 108246
ISSN:
0168-1923
Subject:
Southwestern United States,   etc   ; aerodynamics; canopy; carbon; climate; deforestation; energy balance; forests; heat; land cover; meteorology; observational studies; plant available water; shrubs; surface roughness; surface temperature; tree mortality;     Show all 17 Subjects
Abstract:
... The increase in large-scale land cover change (LCC) in recent decades, particularly in response to climate-driven disturbances, has potential to impact local and regional changes in climate due to modification of carbon sources and sinks, albedo, surface roughness and energy fluxes. Using observational data, we predict the impact of two of the most extensive LCCs occurring in the Southwestern US: ...
DOI:
10.1016/j.agrformet.2020.108246

10. Comprehensive phylogeny of Myrmecocystus honey ants highlights cryptic diversity and infers evolution during aridification of the American Southwest

Author:
van Elst, Tobias; Eriksson, Ti H.; Gadau, Jürgen; Johnson, Robert A.; Rabeling, Christian; Taylor, Jesse E.; Borowiec, Marek L.
Source:
Molecular phylogenetics and evolution 2021 v.155 pp. 107036
ISSN:
1055-7903
Subject:
Southwestern United States,   etc   ; Bayesian theory; Lasius; Miocene epoch; data collection; honey; interspecific variation; life history; liquified foods; molecular systematics; natural history; phylogeny; probability; statistical analysis; Mexico;     Show all 15 Subjects
Abstract:
... The New World ant genus Myrmecocystus Wesmael, 1838 (Formicidae: Formicinae: Lasiini) is endemic to arid and semi-arid habitats of the western United States and Mexico. Several intriguing life history traits have been described for the genus, the best-known of which are replete workers, that store liquified food in their largely expanded crops and are colloquially referred to as “honeypots”. Despi ...
DOI:
10.1016/j.ympev.2020.107036

11. Controlling environmental crisis appraisal through knowledge, vividness, and timing

Author:
Kwan, Virginia S.Y.; Naidu, Esha S.; Bixter, Michael T.
Source:
Journal of environmental psychology 2019 v.61 pp. 93-100
ISSN:
0272-4944
Subject:
Southwestern United States,   etc   ; disasters; drought; infrastructure; psychology;     Show all 5 Subjects
Abstract:
... Effective communication during disasters ensures that the public realizes the urgency of the crisis. The present research aims to identify factors that influence the perceived urgency and severity of a chronic water crisis in the Southwest United States that may lead to a future megadrought. Findings show knowledge about the interdependence of water and power infrastructures, vividness of the drea ...
DOI:
10.1016/j.jenvp.2019.01.003

12. Cottonwood Seed Dispersal Phenology across North America and Worldwide: Tracking ‘Summer Snow’ through an Internet Search

Author:
Rood, Stewart B.; Kaluthota, Sobadini
Source:
Wetlands 2020 v.40 no.6 pp. 1935-1947
ISSN:
0277-5212
Subject:
Southwestern United States,   etc   ; Internet; Populus; latitude; phenology; regression analysis; rivers; seed dispersal; seedlings; Alaska;     Show all 10 Subjects
Abstract:
... Cottonwoods, Populus trees, provide the foundation for riparian woodlands around the Northern Hemisphere but have declined partly due to river damming and water withdrawal. Cottonwood conservation requires periodic seedling replenishment, which depends upon coordinating river flows with the limited seed dispersal interval. Tracking seed dispersal phenology is laborious and we recognized a compleme ...
DOI:
10.1007/s13157-020-01369-3

13. Dialects in the alarm calls of black- tailed prairie dogs (Cynomys ludovicianus): A case of cultural diffusion?

Author:
Dennis, Patricia; Shuster, Stephen M.; Slobodchikoff, C.N.
Source:
Behavioural processes 2020 v.181 pp. 104243
ISSN:
0376-6357
Subject:
Southwestern United States,   etc   ; Cynomys gunnisoni; Cynomys ludovicianus; acoustics; antipredatory behavior; color; conservation areas; habitats; humans;     Show all 9 Subjects
Abstract:
... Prairie dogs (Cynomys spp.) produce an alarm call when a predator appears. Gunnison’s prairie dogs (Cynomys gunnisoni) produce calls that vary in spectral structure according to predator type and specific characteristics unique to the individual predator, such as color and shape. These calls vary depending on geographic location and have been characterized as dialects. Black-tailed prairie dogs (C ...
DOI:
10.1016/j.beproc.2020.104243

14. Using science management partnerships to develop landscape level indicators and assessments to measure vulnerability of Piñon-Juniper woodlands

Author:
Friggens, Megan; Mueller, Stephanie; Williams, Mary
Source:
Ecological indicators 2020 v.119 pp. 106830
ISSN:
1470-160X
Subject:
Southwestern United States,   etc   ; climate change; drought; insects; landscapes; pinyon-juniper; population dynamics; risk assessment; stakeholders;     Show all 9 Subjects
Abstract:
... The process of identifying tangible actions to conserve important resources in the face of climate change is challenged because of uncertainties regarding future conditions. There is also a lack of existing methods for evaluating the effectiveness of proposed management actions for mitigating negative impacts. For piñon-juniper (PJ) ecosystems within the Southwest U.S., efforts are further hampere ...
DOI:
10.1016/j.ecolind.2020.106830

15. Laboratory Rearing of Bagrada hilaris (Hemiptera: Pentatomidae) under Quarantine Conditions in Florida, USA

Author:
Pinkerton, Morgan G.; Thompson, Sage M.; Hodges, Amanda C.; Leppla, Norman C.; Palumbo, John C.
Source:
TheFlorida entomologist 2020 v.103 no.3 pp. 401-403
ISSN:
1938-5102
Subject:
Southwestern United States,   etc   ; Bagrada hilaris; Brassica; cotton; entomologists; oviposition; pests; quarantine; risk; Florida;     Show all 10 Subjects
Abstract:
... There is a risk that Bagrada hilaris will be transported from the southwestern USA and establish in Florida where it could infest Brassica crops. Therefore, new rearing methods were developed to maintain a colony of B. hilaris under quarantine conditions to conduct research on the potential for this pest to become established in Florida. Dental wicks, cotton balls, and Kimwipes™ were evaluated as ...
DOI:
10.1653/024.103.0314

16. Should I Stay Or Should I Go? The importance of electricity rate design for household defection from the power grid

Author:
Gorman, Will; Jarvis, Stephen; Callaway, Duncan
Source:
Applied energy 2020 v.262 pp. 114494
ISSN:
0306-2619
Subject:
Southwestern United States,   etc   ; consumers (people); electricity; households; models; solar energy; storage technology; tariffs; California; Hawaii;     Show all 10 Subjects
Abstract:
... The cost declines of solar and storage technologies have led to concerns about customers disconnecting from utility service and self-supplying electricity. Prior research addressing this issue focused on average electricity tariffs, solar profiles, and demand without considering detailed customer heterogeneity. This paper fills the gap by analyzing how electricity tariffs that shift cost recovery ...
DOI:
10.1016/j.apenergy.2020.114494

17. From basins to rivers: Understanding the revitalization and significance of top-down drainage integration mechanisms in drainage basin evolution

Author:
Hilgendorf, Zach; Wells, Greta; Larson, Phillip H.; Millett, Jason; Kohout, Melissa
Source:
Geomorphology 2020 v.352 pp. 107020
ISSN:
0169-555X
Subject:
Southwestern United States,   etc   ; basins; drainage; lakes; landscapes; rivers; streams; tectonics; watersheds;     Show all 9 Subjects
Abstract:
... The top-down drainage basin integration and drainage network evolutionary processes of lake overflow and aggradational spillover (or aggradational piracy), collectively referred to here as spillover, are undergoing a revitalization in the literature to explain aspects of drainage basin evolution and transverse drainage development across the globe. Spillover processes are commonly unidentified or ...
DOI:
10.1016/j.geomorph.2019.107020

18. Dynamic responses to Fusarium wilt (Fusarium oxysporum f. sp. vasinfectum) race 4 in two introgressed populations of Upland cotton (Gossypium hirsutum)

Author:
Zhang, Jinfa; Abdelraheem, Abdelraheem; Zhu, Yi; Wheeler, Terry A.; Dever, Jane K.; Yu, Jiwen; Shi, Yuzhen; Yuan, Youlu; Wedegaertner, Tom
Source:
Euphytica 2021 v.217 no.6 pp. 98
ISSN:
0014-2336
Subject:
Southwestern United States,   etc   ; Fusarium oxysporum f. sp. vasinfectum; Fusarium wilt; Gossypium hirsutum; backcrossing; cotton; disease incidence; disease severity; genomics; germplasm; highlands; introgression; mortality; quantitative traits; seedlings; soil fungi; Southeastern United States;     Show all 17 Subjects
Abstract:
... Fusarium wilt (FW) caused by race 4 (FOV4) of the soil-borne fungus Fusarium oxysporum f. sp. vasinfectum causes high cotton seedling mortality under field conditions in the west and southwest US Cotton Belt. The objectives of this study were to evaluate the dynamic responses to FOV4 infections in two introgressed Upland cotton (Gossypium hirsutum) populations using an artificial inoculation and s ...
DOI:
10.1007/s10681-021-02836-6

19. Economic and environmental analyses of incorporating guar into the American southwest

Author:
Summers, Hailey M.; Sproul, Evan; Seavert, Clark; Angadi, Sangu; Robbs, Joram; Khanal, Sita; Gutierrez, Paul; Teegerstrom, Trent; Zuniga Vazquez, Daniel A.; Fan, Neng; Quinn, Jason C.
Source:
Agricultural systems 2021 v.191 pp. 103146
ISSN:
0308-521X
Subject:
Southwestern United States,   etc   ; Cyamopsis tetragonoloba; agricultural machinery and equipment; animals; coproducts; cradle-to-gate; credit; drought; drought tolerance; economic performance; environmental impact; farms; guar gum; hydraulic fracturing; imports; income; irrigation; land management; livelihood; oils; shale; transportation;     Show all 22 Subjects
Abstract:
... Persistent drought is affecting the livelihood of American farmers in arid climates. Adopting drought-tolerant crops, such as guar (Cyamopsis tetragonoloba L.), is one potential solution for improving economic revenue and reducing the effect of drought on farms. Guar produces guar gum, which is a thickening and stabilizing agent in fluids used most recently in the hydraulic fracking of shale oil a ...
DOI:
10.1016/j.agsy.2021.103146

20. A New Zadiprion (Hymenoptera: Diprionidae) from Baja California, Mexico, on Pinus jeffreyi

Author:
Smith, David R.
Source:
Proceedings of the Entomological Society of Washington 2019 v.121 no.4 pp. 700-703
ISSN:
0013-8797
Subject:
Southwestern United States,   etc   ; Diprionidae; Pinus jeffreyi; genetic variation; Mexico;     Show all 5 Subjects
Abstract:
... Zadiprion jeffreyiSmith, n. sp., is described. The species was discovered defoliating Pinus jeffreyi in Baja California, Mexico. It is close to Z. rohweri (Middleton) from southwestern United States and Mexico, which is a pinyon pine feeding species. The description and illustrations show differences between the species and genetic differences are noted. ...
DOI:
10.4289/0013-8797.121.4.700