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184 results for “Arkansas”
Data from: Terrestrial arthropods of Steel Creek, Buffalo National River, Arkansas. I. Select beetles (Coleoptera: Buprestidae, Carabidae, Cerambycidae, Curculionoidea excluding Scolytinae)
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Data from: Terrestrial arthropods of Steel Creek, Buffalo National River, Arkansas. II. Sawflies (Insecta: Hymenoptera: "Symphyta")
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Conservation genetic assessment of the paleback darter (Etheostoma pallididorsum), a narrowly distributed endemic in the Ouachita Highlands, Arkansas, USA
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Still time for action: genetic conservation of imperiled South Canadian River fishes, Arkansas River Shiner (Notropis girardi), Peppered Chub (Macrhybopsis tetranema) and Plains Minnow (Hybognathus placitus)
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Data from: Arthropods of Steel Creek, Buffalo National River, Arkansas. III. Heteroptera (Insecta: Hemiptera)
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Data from: Terrestrial arthropods of Steel Creek, Buffalo National River, Arkansas. IV. Asilidae and other Diptera
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Armadillo detections in Northwest Arkansas
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Data from: Local topography shapes fine-scale spatial genetic structure in the Arkansas Valley evening primrose, Oenothera harringtonii (Onagraceae)
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Community science butterfly data Northwest Arkansas
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Seismic Ground Motion Data Analyses for North-East Arkansas
<p>Estimation of liquefaction resistance and shear velocities are key elements in the assessment of potential earthquake damage of existing and new construction sites. The Arkansas Department of Transportation (ARDOT) and other agencies in the region need ground motion response analysis (GMRA) data of specific construction sites. As part of a recent ARDOT’s Transportation Research Committee (TRC) project, researchers have conducted geophysical investigations several construction sites in northeast Arkansas over the past twelve years. The current study gathered the previously reported test data and estimated seismic hazard properties such as shear wave velocity profiles and seismic hazard coefficients for nearby locations. Finally, seismic hazard profiles and liquefaction maps have been generated for selected sites in northeast Arkansas.</p>
FIGURE 5 in On some mites (Acari: Prostigmata) from the Interior Highlands: descriptions of the male, immature stages, and female reproductive system of Pseudocheylus americanus (Ewing, 1909) and some new state records for Arkansas
FIGURE 5. Pseudocheylus americanus (Ewing, 1909), protonymph, dorsum.
FIGURE 6 in On some mites (Acari: Prostigmata) from the Interior Highlands: descriptions of the male, immature stages, and female reproductive system of Pseudocheylus americanus (Ewing, 1909) and some new state records for Arkansas
FIGURE 6. Pseudocheylus americanus (Ewing, 1909), larva, dorsum.
FIGURE 1 in On some mites (Acari: Prostigmata) from the Interior Highlands: descriptions of the male, immature stages, and female reproductive system of Pseudocheylus americanus (Ewing, 1909) and some new state records for Arkansas
FIGURE 1. Pseudocheylus americanus (Ewing, 1909). Stereomicrographs of specimens in ethanol.
Arkansas Synthetic Ecosystem
Arkansas synthetic population dataset consisting of tables for persons, households, schools, and workplaces. This dataset was created by the SPEW program from 2010 ACS SF 5-Year counts; 2010 US TIGER Roads; ACS PUMS 1-Year micro data; 2013 and 2011 NCES schools; and 2009 ESRI workplaces.
FIG. 4. — Cosmoselachus mehlingi n. gen., n in A new operculate symmoriiform chondrichthyan from the Late Mississippian Fayetteville Shale (Arkansas, United States)
FIG. 4. — Cosmoselachus mehlingi n. gen., n. sp., specimen AMNH FF 20509, pharyngeal denticles (arrowhead) revealed by CT scanning. Anterior to top, ventral view in frontal section. Scale bar: 2 cm.
Figure 4 in Caddisflies (Trichoptera) of the Buffalo National River, Arkansas
Figure 4. Seriation plot for caddisfly (Trichoptera) species collected from the Buffalo National River, Arkansas. Monte Carlo mean −0.49, Z = −2.93, P = 0.003. The longitudinal gradient of the Buffalo River runs from left to right for collection sites.
Evidence of nest material kleptoparasitism in Worm-eating Warblers (Helmitheros vermivorum) in east-central Arkansas, USA
<p>Nest material kleptoparasitism likely evolved in birds to reduce the cost of searching for and collecting material themselves. Although nest material kleptoparasitism has been reported commonly in colonially nesting species, reports for solitary breeding species are infrequent, especially for neotropical migratory species. Here we report potential and actual nest material kleptoparasitism in the Worm-eating Warbler (<i>Helmitheros vermivorum</i>). We deployed video camera systems at passerine nests (n = 81) in east-central Arkansas during summers 2011–2012. In one video, we observed a Worm-eating Warbler stealing nesting material from a Hooded Warbler (<i>Setophaga citrina</i>) nest. One day later, we later observed a Worm-eating Warbler landing within 0.5 m of the same warbler nest when the female was incubating, which possibly deterred a second theft of nesting material. In a third video recording, we observed another Worm-eating Warbler landing within 1 m of an Indigo Bunting (<i>Passerina cyanea</i>) nest. As far as we could determine, neither of these latter two nest visits resulted in nest material kleptoparasitism. Potential benefits of nest material kleptoparasitism include reduced competition for limited nest materials, easy access to suitable material, reduced travel distance, and reduction of nest predation risk; however, costs include risk of attack by host or introducing parasites to one's nest. Importantly, this behavior could ultimately affect the behavioral and life history evolution of a species. We suggest further work should be conducted to determine the prevalence of nest material kleptoparasitism in Worm-eating Warblers and other solitary breeding passerines, including efforts to quantify the benefits and costs of this behavior.</p>
Figures 1–6 in Internet-based data platforms re-define the distributions of some large crabronid wasps in Arkansas (Hymenoptera: Crabronidae)
Figures 1–6. Photographs of three species of crabronid wasps occurring in Arkansas. 1–2) Sphecius speciosus. 1) Lateral (Andy Reago and Chrissy McClarren_Flickr 50202938888_CC BY 2.0 DEED). 2) Dorsal. 3–4) Stictia carolina. 3) Lateral (Gordon C. Snelling_iNaturalist_43558725_CC by 4.0 DEED). 4) Dorsal. 5–6. Stizus brevipennis. 5) Lateral (Cara Flinn_ used with permission). 6) Dorsal.
Fig. 3. Gompertz 3 in Seasonal phenology of Sirex nigricornis (Hymenoptera: Siricidae) in Arkansas with implications for management of Sirex noctilio
Fig. 3. Gompertz 3-parameter model fit to cumulative proportion of wood wasps captured in Arkansas, USA, from 24 Sep to 6 Dec 2010.
Fig. 7. Gompertz 3 in Seasonal phenology of Sirex nigricornis (Hymenoptera: Siricidae) in Arkansas with implications for management of Sirex noctilio
Fig. 7. Gompertz 3-parameter model fit to all 5 Sirex nigricornis trapping seasons; a = 1.0628, b = 0.0575, c = 309.5517; R2 = 0.8582. The inflection point for the overall model, encompassing 5 trapping seasons, was 310 d, or 6 Nov. Legend indicates which data points correspond to which year.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.