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3 results for “marine microorganisms”
Data presented in figure 2 of "Evidence of nitrate based nighttime atmospheric nucleation driven by marine microorganisms in the South Pacific"
<p>Data collected at the Maïdo observatory between April 24th and April 29th 2018 used in the calculation of statistics presented in Figure 2 of "Evidence of nitrate based nighttime atmospheric nucleation driven by marine microorganisms in the South Pacific". Data were obtained by an API-ToF-MS; molecular clusters are grouped by family as described in Chamba et al. 2023. Data were first filtered based on SO2 mixing ratios to exclude the periods when the station was under the influence of the volcanic plume of the Piton de la Fournaise. Hourly averages of the signals of interest were then calculated and only the data corresponding to the periods during which the station was in the free troposphere were considered.</p>
16S sequences from mesocosms experiment testing the effect of Siganus rivulatus on marine microorganisms
<p>Nutrient cycling is a key biogeochemical process underlying the functioning of marine ecosystems. Yet, the contribution of fishes is still poorly understood. This is problematic considering the current modifications of fish assemblages experienced in certain regions such as the Mediterranean Sea, and their potential consequences in terms of ecosystem functioning. In this study, we used a mesocosm experiment to test the effect of nutrient recycling by an invasive marine herbivorous fish (<em>Siganus rivulatus</em>) on planktonic and benthic microbial communities. The response of these communities was assessed using a variety of analytical approaches such as measures of nutrient concentration, flow cytometry, and metabarcoding of the 16S rRNA gene. Our results show that several microbial compartments of marine ecosystems respond to the nutrients released by fish through excretion and egestion. The nutrients contained in the macroalgae consumed by <em>S. rivulatus</em> were excreted in large amounts as dissolved nutrients, which resulted in higher concentrations of N-based nutrients in the water (NH<sub>4</sub>, NO<sub>2</sub>/NO<sub>3</sub>). This excess of N in the system was associated with higher abundances of planktonic microbes (phyto- and bacterioplankton), modifications of the structure of planktonic bacterial communities, and the tissue composition of the remaining macroalgae. Non-assimilated nutrients were released in the form of feces under the shelters where the fish spent most of their time and defecated during the night, leading to local increases in diversity and significant shifts in the structure of sediment bacterial communities. Overall, our results suggest that the impact of <em>S. rivulatus</em> on planktonic microbes was related to the indirect bottom-up effect induced by excreted nutrients while its effect on benthic microbes was due to a direct release of microbes from its gut microbiome. This study represents one of the first assessment of the effect of nutrient recycling by fishes on the microbial communities from several compartments of marine ecosystems and one of the first evidence of the invisible effect of invasive species on the microbial components of marine ecosystems.</p>
16S sequences from mesocosms experiment testing the effect of Siganus rivulatus on marine microorganisms
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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)
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.