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Krummholz island soil bulk density data for East of Tvan, 1994 and 1996.
Previous work has shown that bulk density is lower in the A horizon of soils directly under tree islands (Engelmann spruce (Picea engelmannii) and subalpine fir (Abies lasiocarpa)) than in adjacent tundra soil. We compiled a dataset of bulk densities from soils that had been previously collected at several dates in 1994 and 1996. The results from this large dataset confirmed those of Pauker and Seastedt (1996): soils within tree islands had lower bulk densities than those of other sites.
Responses of dry meadow Kobresia myosuroides and Carex rupestris to Nitrogen fertilization for East of Tvan, 2013 - 2015
A common response of plant communities to increased nitrogen (N) deposition is a shift in species’ abundances. Multiple factors have been proposed to explain the changes in abundance, notably competition and soil acidification. We hypothesized that a plant species that decreased in abundance with elevated N would have lower ectomycorrhizal fungi, altered root-associated bacteria communities, and/or greater susceptibility to Al toxicity than a species that increased in abundance with increasing N deposition. We examined changes in plant–microbe associations and Al toxicity in two dominant species from an alpine dry meadow community subjected to long-term low-level N addition. Carex rupestris has increased in cover over time with N addition and Kobresia myosuroides has decreased. We conducted field sampling of soil microbes from treatment plots and tested whether field levels of Al have toxic effects on sedge species in a greenhouse study. Declines in ectomycorrhizal infection of Cenococcum geophilum occurred on Kobresia with increasing N treatment. In contrast, neither Al level nor changes in bacteria community composition corresponded with the change in cover of sedge species. Decreased ectomycorrhizal infection may have contributed to the decrease in abundance of Kobresia. This study contributes to an understanding of the types of plant–soil interactions that may influence how plant species respond to N deposition and rejects Al toxicity and changes in bacteria composition as factors that likely play a role in changes in sedge abundance. Citations: Potter, T. S., Owens, W. M., Bowman, W. D. (2019). Do plant–microbe interactions and aluminum tolerance influence alpine sedge species’ responses to nitrogen deposition?. Ecosphere, 10(7), e02775.
Con-mod soil moisture data in the Black Sand experiment plots for East Knoll, Audubon, Lefty, Soddie and Trough, 2019 - ongoing.
In the alpine tundra, shrubs modify wind distribution of snow, increasing snowpack on the leeward side of shrubs, and they provide shading, which modifies temperatures. In order to mimic these abiotic effect of shrubs, structures called connectivity modifiers, hereafter referred to as con-mods, were deployed in Black Band experiment plots in September 2018. Briefly, the Black Sand experiment was initiated in May 2018 to measure the effects of an extended growing season, by initiating earlier snow melt through the application of black sand, on plants and biogeochemistry. Together, this experimental framework allows us to ask how biotic effects influence climate exposure and ecological responsiveness.
Con-mod species composition in the Black Sand experiment for East Knoll, Audubon, Lefty, Soddie and Trough, 2019 - ongoing.
In the alpine tundra, shrubs modify wind distribution of snow, increasing snowpack on the leeward side of shrubs, and they provide shading, which modifies temperatures. In order to mimic these abiotic effect of shrubs, structures called connectivity modifiers, hereafter referred to as con-mods, were deployed in Black Band experiment plots in September 2018. Briefly, the Black Sand experiment was initiated in May 2018 to measure the effects of an extended growing season, by initiating earlier snow melt through the application of black sand, on plants and biogeochemistry. Together, this experimental framework allows us to ask how biotic effects influence climate exposure and ecological responsiveness.
Con-mod soil temperature data in the Black Sand experiment control plots for East Knoll, Audubon, Lefty, Soddie and Trough, 2019 - ongoing.
In the alpine tundra, shrubs modify wind distribution of snow, increasing snowpack on the leeward side of shrubs, and they provide shading, which modifies temperatures. In order to mimic these abiotic effect of shrubs, structures called connectivity modifiers, hereafter referred to as con-mods, were deployed in Black Band experiment plots in September 2018. Briefly, the Black Sand experiment was initiated in May 2018 to measure the effects of an extended growing season, by initiating earlier snow melt through the application of black sand, on plants and biogeochemistry. Together, this experimental framework allows us to ask how biotic effects influence climate exposure and ecological responsiveness.
PIE LTER, parasites of the fiddler crab, Minuca pugnax, on east coast salt marshes of the USA.
When a species colonizes a new range, it can escape enemies found in its original range. Examples of enemy escape abound for invasive species, but are rare for climate migrants, which are populations of a species that colonize a new range due to climate-driven range shifts or expansions. The fiddler crab Minuca (=Uca) pugnax is found in the intertidal salt marshes of the US east coast. It recently expanded its range north into the Gulf of Maine as a result of ocean warming. We tested the hypothesis that M. pugnax had escaped its parasite enemies. Parasite richness and trematode intensity were lower in populations in the expanded range than in populations in the historical range, but infection prevalence did not differ. Although M. pugnax escaped most of its historical parasites when it migrated northward, it was infected with black-gill lamellae (indicative of Synophrya hypertrophica), which was found in the historical range, and with the trematode Odhneria cf. odhneri, which was not found in the historical range. To our knowledge, this is the first time that O. cf. odhneri has been reported in fiddler crabs. These results demonstrate that although M. pugnax escaped some of its historical parasites when it expanded its range, it appears to have gained a new parasite (O. cf. odhneri) in the expanded range. Overall, our results demonstrate that climate migrants can escape their enemies despite colonizing habitats adjacent to their enemy-filled historical range. See Johnson et al. 2020. A climate migrant escapes its parasites. Marine Ecology Progress Series 641: 111-121 for more details.
East-West C3-C4 Grassland Biomass Fertilizer Plots in a Chihuahuan Desert Grassland at the Sevilleta National Wildlife Refuge, New Mexico (1989-1992)
This dataset contains weights of vegetation biomass collected in fertilizer plots from 1989 through 1992. The data were originally collected to analyze the effects of fertilization on vegetation productivity on the Sevilleta NWR.
Fig.17 in Descriptions and records of South-East Asiatic Odonata (II)
Fig.17. Oligoaeschnaplatyura, sp.n. ♂. Analappendages, dorsal view and right side.
Pl. 16. — Male anal appendages of Malaysian species of Amphicnemis, dorsal view and right side in Descriptions and records of South-East Asiatic Odonata (II)
Pl. 16. — Male anal appendages of Malaysian species of Amphicnemis, dorsal view and right side
Fig. 14 in Descriptions and records of South-East Asiatic Odonata (II)
Fig. 14. Ceriagrion hoogerwerfi, sp. n. ♂. Anal appen dages, dorsal view and left side.
Fig. 10 in Descriptions and records of South-East Asiatic Odonata (II)
Fig. 10. Coeliccia coomansi, sp. n. ♀. Prothorax, dorsal view and right side .
Fig. 9 in Descriptions and records of South-East Asiatic Odonata (II)
Fig. 9. Coeliccia coomansi, sp. n. ♂. Anal appendages, dorsal view and right side.
Fig. 8 8 in Descriptions and records of South-East Asiatic Odonata (II)
Fig. 8 8.. Coeliccia arcuata, sp. n. ♀ ♀.. Prothorax, dorsal view and right side .
Fig. 7 in Descriptions and records of South-East Asiatic Odonata (II)
Fig. 7. Coeliccia arcuata, sp. n. ♂. Anal ap pendages, dorsal view and right side .
Fig.18 in Descriptions and records of South-East Asiatic Odonata (II)
Fig.18. Oligoaeschna mutata,sp. n. d'. Analappendages, dorsalview and right side.
Fig. 11 in Descriptions and records of South-East Asiatic Odonata (II)
Fig. 11. Coeliccia octo- gesima (Selys), ♀ holo- type. Colouv-pattern of synthorax.
Fig. 6 in Descriptions and records of South-East Asiatic Odonata (II)
Fig. 6. Drepanosticta barbatula, sp. n. ♂. Anal appendages, dorsal view and right side.
Fig. 5 in Descriptions and records of South-East Asiatic Odonata (II)
Fig. 5. Podolestes coomansi, sp. n. ♂. Anal appendages, dorsal view and right side.
Biogeochemical model projections years 1982-2007 in North East Atlantic
<p>Marine enviromental data from Biogeochemical models in paper "Can we project changes in fish abundance and distribution in response to climate?" at Global Change Biology journal</p>
Text-figure 1. Mormotomyia hirsuta Austen, 3. Greatly enlarged. in A Remarkable Semi-Apterous Fly (Diptera) found in a Cave in East Africa, and representing a new Family, Genus, and Species.
Text-figure 1. Mormotomyia hirsuta Austen, 3. Greatly enlarged.
ScienceDex guides
Understand access before you commit
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.