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322 results for “Southeastern United States”
Figures 18-20 in The variegated mud-loving beetles (Coleoptera: Heteroceridae) of Mississippi and Alabama, with discussion and keys to the species occurring in the southeastern United States
Figures 18-20. Habiti of large Heterocerus species with post-mesocoxal lines. 18) H. insolens. 19) H. sinuosus. 20) H. mollinus. Specimens 20a and 20c are hypermandibulate. Scale line = 1mm.
Figures 30-31 in The variegated mud-loving beetles (Coleoptera: Heteroceridae) of Mississippi and Alabama, with discussion and keys to the species occurring in the southeastern United States
Figures 30-31. Habiti of two widespread species reported to occur in the southeastern USA. 30) Augyles auromicans. 31) Heterocerus fenestratus. Scale line = 1mm.
Figures 11-17 in The variegated mud-loving beetles (Coleoptera: Heteroceridae) of Mississippi and Alabama, with discussion and keys to the species occurring in the southeastern United States
Figures 11-17. Habiti of large Heterocerus species lacking post-mesocoxal lines. 11) H. pallidus (male is hypermandibulate). 12) H. intermuralis (male is hypermandibulate). 13) H. fatuus. 14) H. gnatho. 15) H. longilobulus. 16) H. sandersoni. 17) H. angustatus.Scale line = 1mm.
Figures 13–14 in A new species of Ataenius Harold (Coleoptera: Scarabaeidae: Aphodiinae) from the southeastern United States, with a lectotype designation
Figures 13–14. Distribution of Ataenius brevis and Ataenius thomasi in the southeastern United States. 13) Ataenius brevis Fall. 14) Ataenius thomasi, new species.
Figures 1–6. Ataenius brevis Fall. 1 in A new species of Ataenius Harold (Coleoptera: Scarabaeidae: Aphodiinae) from the southeastern United States, with a lectotype designation
Figures 1–6. Ataenius brevis Fall. 1) Dorsal view of lectotype. 2) Ventral view of lectotype. 3) Frontal view of lectotype. 4) Lectotype labels. 5) Ventral view of metatibia of lectotype, arrow indicates outlined accessory spine. 6) Male genitalia, specimen from Citico, Tennessee.
Figures 7–12. Ataenius thomasi Schnepp and Ashman. 7 in A new species of Ataenius Harold (Coleoptera: Scarabaeidae: Aphodiinae) from the southeastern United States, with a lectotype designation
Figures 7–12. Ataenius thomasi Schnepp and Ashman. 7) Dorsal view of holotype. 8) Ventral view of holotype. 9) Frontal view of holotype. 10) Holotype labels. 11) Ventral view of metatibia of holotype, arrow indicates reduced accessory spine. 12) Male genitalia of paratype.
Differential equity in access to public and private coastal infrastructure in the Southeastern United States
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Phenotypic characterization of southeastern United States open-pollinated maize landraces
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Data from: Genetic structure and diversity of the blueface darter Etheostoma cyanoprosopum, a microendemic freshwater fish in the southeastern United States
Darters represent one of the most diverse groups of freshwater fishes in North America, but approximately 33% of the 215 recognized species are considered imperiled on the IUCN Red List. Discovery and description of new darter species continues at a relatively rapid pace, with many exhibiting microendemic geographic distributions and little baseline data for conservation decisions. The Blueface Darter Etheostoma cyanoprosopum is a newly described species that occupies < 20 km of stream reaches in the Bear Creek system of the Tennessee River drainage and the Hubbard Creek system of the Black Warrior River drainage in the Mobile Basin (Alabama, USA). In addition to restricted distribution, the species is threatened by habitat degradation and several natural and man-made barriers that putatively fragment connectivity among populations. This study used microsatellite and mitochondrial (mt) DNA data with comparisons to the relatively broadly distributed sister species (Bandfin Darter E. zonistium) to evaluate multiple objectives about genetic connectivity and diversity among Blueface Darter populations. Analysis of mtDNA data indicated a lack of historical structuring across the Tennessee-Black Warrior river drainage divide and within the Bear Creek system. However, microsatellite-based Bayesian cluster analyses and F-statistics suggested contemporary isolation across the drainage divide and evidence for reservoir-induced fragmentation within the Bear Creek system. Compared to the sister Bandfin Darter, Blueface Darter populations exhibited reduced levels of genetic diversity, rendering them more susceptible to local extirpation and reduced fitness. Continued monitoring and quantitative ecological studies are recommended to understand population-specific measures of occurrence and abundance.
Bat community response to intensification of biomass production for bioenergy across the southeastern United States
Human demand for food, fiber, and space is accelerating the rate of change of land cover and land use. Much of the world now consists of a matrix of natural forests, managed forests, agricultural cropland, and urbanized plots. Expansion of domestic energy production efforts in the United States is one driver predicted to influence future land-use and land management practices across large spatial scales. Favorable growing conditions make the southeastern United States an ideal location for producing a large portion of the country's renewable bioenergy. We investigated patterns of bat occurrence in two bioenergy feedstocks commonly grown in this region (corn, Zea mays, and pine, Pinus taeda and P. elliottii). We also evaluated potential impacts of the three major pathways of woody biomass extraction (residue removal following clearcut harvest, short-rotation energy plantations, and mid-rotation forest thinning) to bat occurrence through a priori land-use contrasts. We acoustically sampled bat vocalizations at 84 sites in the Southeastern Plains and Southern Coastal Plains of the southeastern United States across three years. We found that mid-rotation thinning resulted in positive effects on bat occurrence, and potential conversion of unmanaged (reference) forest to managed forest for timber and/or bioenergy harvest resulted in negative effects on bat occurrence when effects were averaged across all species. The effects of short-rotation energy plantations, removal of logging residues from plantation clearcuts, and corn were equivocal for all bat species examined. Our results suggest that accelerated production of biomass for energy production through either corn or intensively managed pine forests is not likely to have an adverse effect on bat communities, so long as existing older unmanaged forests are not converted to managed bioenergy or timber plantations. Beyond bioenergy crop production, mid-rotation thinning of even-aged pine stands intended for timber production, increases to the duration of plantation rotations to promote older forest stands, arranging forest stands and crop fields to maximize edge habitat, and maintaining unmanaged forests could benefit bat communities by augmenting roosting and foraging opportunities.
Data from: Multispecies conservation of freshwater fish assemblages in response to climate change in the southeastern United States
Aim: Streamflow and water temperature are primary variables influencing the distribution of freshwater taxa. Climate-induced changes in these variables are already causing shifts in species distributions, with continued changes projected in the coming decades. The Mobile River Basin (MRB), located in the southeastern United States, contains some of the highest levels of temperate freshwater biodiversity in North America. We integrated species distribution data with contemporary and future streamflow and water temperature data as well as other physical habitat data to characterize occurrence probabilities of fish species in the MRB with the goal of identifying current and future areas of high conservation value. Location: Mobile River Basin, southeastern United States Methods: We used a maximum entropy approach to estimate baseline and future occurrence probability distributions for 88 fish species in the MRB based on model-generated streamflow and water temperature as well as geologic, topographic, and land cover data. Areas of conservation prioritization were identified based on regions that contain suitable habitat for high levels of biodiversity according to baseline and future conditions while accounting for uncertainty associated with multiple future climate projections. Results: On average, flow (28%), water temperature (28%), and geology (30%) contribute evenly to determining suitable habitat for fish species in the MRB. Based on baseline and future species distribution model estimates, high priority streams (best 10%) are largely concentrated in the eastern portion of the MRB, with a majority (51%) located within the Coosa and Tallapoosa River systems. Main Conclusion: We provide a framework that uses relevant hydrologic and environmental data in the context of future climatic uncertainty to estimate areas of freshwater conservation opportunity in the coming decades. While streamflow and water temperature represent important habitat for freshwater fishes in the MRB, distributions are also constrained by other aspects of the physical environment.
Forest associated habitat variables influence human-tick encounters in the southeastern United States
<p>Due to the increased frequency of human-tick encounters and expanding ranges of ticks in the United States, there is a critical need to identify environmental conditions associated with tick populations and their likelihood to contact human hosts. In a passive tick surveillance partnership with the United States Department of Agriculture Forest Inventory and Analysis (FIA) program, we identified environmental variables associated with tick encounters by forestry personnel. Ticks were identified to species and life stage and site-specific variables were associated with each tick using FIA forest inventory datasets and generalized linear and zero-inflated models. Of the 55 FIA variables available, we identified biotic and abiotic environmental variables associated with <em>Amblyomma</em> <em>americanum</em> (carbon in litter material and standing dead tree aboveground dry biomass), <em>Dermacentor</em> <em>variabilis</em> (live sapling belowground dry biomass, carbon in litter material, forest stand age, and elevation), and <em>Ixodes</em> <em>scapularis</em> (carbon in dead woody material and seedling species unevenness). We propose that land management decisions not only affect common flora and fauna but changes to these habitats can also alter the way ticks parasitize hosts and use vegetation to find those hosts. Testing of these results can be used with land management decisions to prevent future encounters and highlight risk areas. Foresters that inventory sites encounter ticks, which we can then use to better understand the environmental conditions conducive to increased tick abundance or habitat suitability.</p>
Southeastern United States Prescribed Burning Emission from 2013 to 2020
<p>The dataset includes data for the project: https://github.com/zli867/RxFireEmission. </p> <ul> <li>data: includes geographic data and CMAQ grid definition data for the project.</li> <li>FINN: Burn type differentiated FINN data from 2013 to 2020 in the southeastern U.S.</li> <li>permits: Burn type differentiated permit data from 2013 to 2020 in Georgia, South Carolina, and Florida.</li> <li>BlueSky Input: Input burning records for running BlueSky.</li> <li>BlueSky Output: Output of BlueSky. The data is in json format and it can convert to NetCDF by using scripts provided in our Github repository.</li> </ul>
Data from: Assessing springtime vertebrate prey of sympatric mesopredators in the southeastern United States using metabarcoding analysis
<p>Coyotes (<em>Canis latrans</em>) colonized the eastern United States over the last century and formed a 3-species predator guild with bobcats (<em>Lynx rufus</em>) and gray foxes (<em>Urocyon cinereoargenteus</em>) across much of the southeastern United States. Diets among the three species vary along with respective impacts on game species such as white-tailed deer (<em>Odocoileus virginianus</em>) and wild turkeys (<em>Meleagris gallopavo</em>). To determine predation impacts on vertebrate prey and dietary overlap in consumption of prey items, we assessed diets of coyote, bobcat, and gray fox during spring, coinciding with white-tailed deer fawning and wild turkey nesting and brood rearing. We sampled across three sites along the Savannah River in South Carolina from mid-May through mid-June of 2020-2021. We collected 180 scat samples along 295.9 kilometers (71.1 – 122.4 km/site) of unpaved secondary roads and used DNA metabarcoding to determine vertebrate diet items. We identified predator species of scat using DNA metabarcoding and species-specific mtDNA fragment analysis (153 were coyotes, 20 bobcats, and seven gray foxes). Overall, we found evidence that two species, coyote and bobcat, consumed deer while all three consumed turkeys. The frequency of deer in the diet varied across sites for coyotes from 62 – 86% and wild turkey was present with a frequency of occurrence of 9% for coyotes, 5% for bobcats, and 14% for gray fox. Vertebrate diet specialization was evident across predator species with a high frequency of deer in coyote diets, rabbits and small mammals in bobcat diets, and herpetofauna in gray fox diets. During deer fawning and wild turkey nesting and brood rearing, dietary overlap appears to be mediated by the disparate selection of prey items, which reduced competition among coyotes, bobcats, and gray foxes. The use of DNA metabarcoding may augment our understanding of dietary preferences within this predator guild by providing increased resolution of diet composition among important game species.</p>
Data from: Breeding heat tolerant orchardgrass germplasm for summer persistence in high temperature stress environments of the southeastern United States
<p>This is digital research data corresponding to a published manuscript, Breeding heat tolerant orchardgrass germplasm for summer persistence in high temperature stress environments of the southeastern United States, in Crop Science, Volume 61, p. 1915 - 1925. Orchardgrass (Dactylis glomerata L.) could serve as a cool-season perennial in southeastern production systems, but often does not behave as a true perennial under high temperature stress conditions of the region. This work sought to develop heat-tolerant orchardgrass germplasm through recurrent phenotypic selection (RPS) that would both reduce secondary seed dormancy caused by high soil temperatures and improve stand persistence over summer months. Selection was conducted in a growth chamber 40/30 °C (12/12 h, light/darkness), with germinated seedlings subjected to an additional 2–3 weeks of 40/30 °C conditions. The base germplasm (Cycle 0) and selected individuals (Cycles 1–3) were transplanted into the field, then harvested for seed. Forty-degree germination tests compared mean cumulative germination, velocity of germination within 8 days (VOG8), and realized heritability. Stand persistencewas assessed 1 year after transplanting.</p>
Figure 54 in Jumping spiders of the Phidippus princeps group in the southeastern United States (Araneae: Salticidae: Dendryphantina)
Figure 54. Courtship and mating by Phidippus pulcherrimus from Nassau County, Florida. 1, Composite image showing approach and mating, first on the right side (7), then on the left side (8). 2, Display by a male at a distance. 3, Display at an intermediate distance. 4-5, Sequence showing mating on right side (4) followed by mating on left side (5). 6, Another mating pair.
Figure 48 in Jumping spiders of the Phidippus princeps group in the southeastern United States (Araneae: Salticidae: Dendryphantina)
Figure 48. Courtship by Phidippus princeps from Laurens County, South Carolina. 1, Composite showing two sequential positions as a male stepped from side to side in front of a female at a distance. The female did not move. 2-
Figure 58 in Jumping spiders of the Phidippus princeps group in the southeastern United States (Araneae: Salticidae: Dendryphantina)
Figure 58 (continued from previous page). Orange to red forms of Phidippus species in the southeastern United States. 7-8, Two adult female P. otiosus from Highlands County, Florida. 9, Adult male P. otiosus (Hentz 1846) from Highlands County, Florida. 10, Adult male P. otiosus from Montgomery County, Alabama. 11-12, Two adult female P. regius C. L. Koch 1846 from Tosohatchee Wildlife Management Area in Orange County, Florida.
Figure 51 in Jumping spiders of the Phidippus princeps group in the southeastern United States (Araneae: Salticidae: Dendryphantina)
Figure 51. Courtship by Phidippus pulcherrimus-like spiders from Screven County, Georgia. 1, Male displaying to female with prey, at a distance. 2, Composite image showing three successive positions (1-3) during approach by a male. 3, Composite images showing six successive positions during approach by a male.
Figure 38 in Jumping spiders of the Phidippus princeps group in the southeastern United States (Araneae: Salticidae: Dendryphantina)
Figure 38. Illustrations published with earlier descriptions of Phidippus princeps and P. pulcherrimus. Composite photo by Jay Barnes (16) and drawings by G. B. Edwards (6-9, 13-15, 17-18) used with permission.
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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.