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opencc-zeroMar 2024View details →

Measurements of volatile organic compounds in the Northern Colorado Front Range in 2023

<p>This dataset was collected by Colorado State University (CSU) students during the spring 2023 and fall 2023 semesters as part of a course in the Department of Atmospheric Science (ATS-716: Air Quality Characterization). Measurements of volatile organic compounds (VOCs) were collected in Northern Colorado, using a low-cost sensor called SENSIT SPOD. The SENSIT SPOD sensor package combines wind field and air pollutant concentration measurements to detect emission plumes and locate the source of those emissions. The sensor measures non-speciated, uncalibrated concentrations of a subset of VOCs. The sensor also measures temperature, relative humidity, pressure, and wind direction and speed. The SPODs were used to trigger the collection of whole air samples during periods with higher concentrations of VOCs. Air samples from the triggered canisters were analyzed at CSU using Gas Chromatography (GC) to provide a measure of approximately 50 VOCs. An integrated canister was used to measure the average concentration of approximately 50 VOCs over a one-week period. After collection, sample air in the canisters was analyzed at CSU using Gas Chromatography (GC).</p>

opencc-zeroDec 2015View details →

Data from: Gene expression under thermal stress varies across a geographic range expansion front

Many ectothermic species are currently expanding their distributions polewards due to anthropogenic global warming. Molecular genetic mechanisms facilitating range expansion under these conditions are largely unknown, but understanding these could help mitigate expanding pests and disease vectors, or help explain why some species fail to track changing climates. Here, using RNA-seq data, we examine genome-wide changes in gene expression under heat and cold stress in the range-expanding damselfly Ischnura elegans in northern Europe. We find that both the number of genes involved and levels of gene expression under heat stress have become attenuated during the expansion, consistent with a previously-reported release from selection on heat tolerances as species move polewards. Genes upregulated under cold stress differed between core and edge populations, corroborating previously-reported rapid adaptation to cooler climates at the expansion front. Expression of sixty-nine genes exhibited a region x treatment effect; these were primarily upregulated in response to heat stress in core populations but in response to cold stress at the range edge, suggesting that some cellular responses originally adapted to heat stress may switch to cold stress functionality upon encountering novel thermal selection regimes during range expansion. Transcriptional responses to thermal stress involving heat shock and neural function genes were largely geographically conserved, while retrotransposon, regulatory, muscle function and defence gene expression patterns were more variable. Flexible mechanisms of cold stress response and the ability of some genes to shift their function between heat and cold stress might be key mechanisms facilitating rapid poleward expansion in insects.

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Supplementary material 1 from: Gariepy TD, Musolin DL, Konjević A, Karpun NN, Zakharchenko VY, Zhuravleva EN, Tavella L, Bruin A, Haye T (2021) Diversity and distribution of cytochrome oxidase I (COI) haplotypes of the brown marmorated stink bug, Halyomorpha halys Stål (Hemiptera, Pentatomidae), along the eastern front of its invasive range in Eurasia. NeoBiota 68: 53-77. https://doi.org/10.3897/neobiota.68.68915

Table S1. Collection information and GPS coordinates

opencc-zeroSep 2021View details →

publicJan 2016View details →

Data from: Gene expression under thermal stress varies across a geographic range expansion front

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publicMar 2024View details →

Measurements of volatile organic compounds in the Northern Colorado Front Range in 2023

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FIGURE 60. Orobanche javakhetica. A–C. General habit. D–F. Flower, side view. G. Flower, front view. H, J in Holoparasitic Orobanchaceae in Georgia (Caucasus): taxonomic revision, diversity, distribution, habitats and host range

FIGURE 60. Orobanche javakhetica. A–C. General habit. D–F. Flower, side view. G. Flower, front view. H, J. Representative habitat (Samegrelo-Zemo Svaneti prov., Ushguli to Mt. Shkhara, slopes of Enguri river valley). I–J. Host. Stachys macrantha. Photos by R. Piwowarczyk.

FIGURE 38. Orobanche grossheimii. A–D. General habit. E–G. Flower, side view. H–J. Flower, front view. K, M in Holoparasitic Orobanchaceae in Georgia (Caucasus): taxonomic revision, diversity, distribution, habitats and host range

FIGURE 38. Orobanche grossheimii. A–D. General habit. E–G. Flower, side view. H–J. Flower, front view. K, M. Representative habitat (Samtskhe-Javakheti prov., Bakuriani distr., below Tskhratskaro pass). K–M. Host, Cephalaria gigantea. Photos by R. Piwowarczyk.

FIGURE 34. Orobanche alba. A–D. General habit. E–G. Flower, side view. H–I. Flower, front view. J–L in Holoparasitic Orobanchaceae in Georgia (Caucasus): taxonomic revision, diversity, distribution, habitats and host range

FIGURE 34. Orobanche alba. A–D. General habit. E–G. Flower, side view. H–I. Flower, front view. J–L. Representative hosts (J. Origanum vulgare. K. Thymus collinus. L. Salvia verticillata).

FIGURE 30. Orobanche caryophyllacea. A–D. General habit. E–G. Flower, side view. H–J. Flower, front view. K in Holoparasitic Orobanchaceae in Georgia (Caucasus): taxonomic revision, diversity, distribution, habitats and host range

FIGURE 30. Orobanche caryophyllacea. A–D. General habit. E–G. Flower, side view. H–J. Flower, front view. K. Representative habitat (Tbilisi prov., Tbilisi, slopes near the Chronicle of Georgia). L. Representative host, Galium verum. Photos by R. Piwowarczyk.