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6,467 results for “process”
Data from: Deterministic processes vary during community assembly for ecologically dissimilar taxa
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Data from: Using a forest dynamics model to link community assembly processes and traits structure
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Data from: Rapid diversification of sperm precedence traits and processes among three sibling Drosophila species
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Data from: Effect of dalfampridine on information processing speed impairment in multiple sclerosis
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Data from: Resource composition mediates the effects of intraspecific variability in nutrient recycling on ecosystem processes
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Data from: Limited by the roof of the world: mountain radiations of Apollo swallowtails controlled by diversity-dependence processes
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Data from: Perceived duration of brief visual events is mediated by timing mechanisms at the global stages of visual processing
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Data from: Process-based species pools reveal the hidden signature of biotic interactions amid the influence of temperature filtering
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Data from: Evolutionary patterns and processes: lessons from ancient DNA
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Data from: Evolution of population genetic structure of the British roe deer by natural and anthropogenic processes (Capreolus capreolus)
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Data from: Asymmetric sensitivity of ecosystem carbon and water processes in response to precipitation change in a semi-arid steppe
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Data from: Improvement in nitrogen fixation capacity could be part of the domestication process in soybean
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Data from: Differential temperature sensitivity of synaptic and firing processes in a neural mass model of epileptic discharges explains heterogeneous response of experimental epilepsy to focal brain cooling
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Raw data for: Fannin, L. D., Plavcan, J. M., Daegling, D. J., & McGraw, W. S. (2021); Oral processing, sexual selection, and size variation in the circumorbital region of Colobus and Piliocolobus
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Gradients of genetic diversity and differentiation across the distribution range of a Mediterranean coral: patterns, processes and conservation implications.
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Environmental filtering and spatial processes shape the beta diversity of liana communities in a valley savanna in Southwest China
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Nitrate uptake estimates phytoplankton incorporation of dissolved NO3- at selected depths from CCE LTER process cruises in the California Current System, 2011 – 2016 (ongoing).
Nitrate uptake samples (1.1-L) of seawater are taken each day shortly before noon on the CTD rosette up-cast during the CCE Process cruises (since 2011, ongoing). Approximate nitrate concentrations are determined at sea and the samples are spiked with 15NO3- at a concentration equivalent to ~10% ambient nitrate. Samples (one sample per depth) are incubated for 24 hours in polycarbonate bottles held at natural light and temperature conditions on the in situ array. After recovery samples are filtered onto pre-combusted GF/F filters, which are analyzed for particulate nitrogen and δ15N by mass spectrometry in the Scripps Analytical Facility. Accurate nitrate concentrations are determined after the cruise from frozen and filtered samples analyzed by autoanalyzer (see separate Dissolved Inorganic Nutrients dataset by Ralf Goericke). Nitrate uptake is calculated using the equations in Dugdale & Wilkerson (1986). In surface waters where nitrate concentrations are often quite low, we spike with a minimum of 10 nmol L-1 15NO3-. Since this can lead to a bias (high) in calculated nitrate uptake, when post-cruise nitrate analyses showed that our spike concentration was greater than 10% of ambient nitrate, we multiplied by the uptake calculated from the equations of Dugdale & Wilkerson (1986) by (ambient NO3-)/(ambient NO3- + added 15NO3-). Primary production was simultaneously estimated from 14C uptake in triplicate 250-mL bottles (plus a dark bottle) incubated similarly on the in situ array (see separate Primary Production – Particulate dataset by Ralf Goericke). We calculated f-ratios by assuming that phytoplankton uptake occurred at Redfield carbon:nitrogen ratios of 106:16 (mol:mol). To eliminate the impact of phytoplankton that may be engaged in luxury nitrate uptake in the deep euphotic zone, we also report conservative nitrate uptake, which is the minimum of nitrate uptake or primary production divided by the Redfield C:N ratio. This value thus sets a maximum for nitrate
Sediment trap Rhizaria flux from sediment trap samples collected aboard CCE LTER process cruises in the California Current system, 2011 - present.
The collection and enumeration of sinking rhizarian cells on CCE LTER Process cruises has been led by Mike Stukel since 2007. Sinking particles are collected in VERTEX-style particle interceptor traps (PIT) with an 8:1 aspect ratio, 70-mm diameter, and a baffle on top comprised of 13 smaller beveled tubes with a similar 8:1 aspect ratio. Typically 8-12 tubes were deployed with a formalin-brine for a duration of 2-5 days. After recovery, samples were immediately gravity filtered through a 47-mm, 200-μm mesh nitex filter and analyzed under a stereomicroscope. The two dominant taxa of giant rhizaria (Aulosphaeridae and Castanellidae) were then enumerated in each sample. We note, however, that at least two distinct morphotypes of Aulosphaeridae were seen in the sample (but analyzed together because they had similar size and shape) and several smaller rhizarian taxa were also noticed, but not quantified because they are likely not quantitatively captured by our 200-μm filter. Mean and standard deviation of samples from different tubes are reported for each depth. For more details please see Stukel et al. (2013) or Biard et al. (submitted). Biard, T., J. W. Krause, M. R. Stukel and M. D. Ohman (submitted). "The significance of giant Phaeodarians (Rhizaria) to biogenic silica export in the California Current Ecosystem." Global Biogeochem. Cycles. Knauer, G. A., J. H. Martin and K. W. Bruland (1979). "Fluxes of particulate carbon, nitrogen, and phosphorus in the upper water column of the Northeast Pacific." Deep-Sea Research 26(1): 97-108. Stukel, M. R., M. D. Ohman, C. R. Benitez-Nelson and M. R. Landry (2013). "Contributions of mesozooplankton to vertical carbon export in a coastal upwelling system." Marine Ecology Progress Series 491: 47-65
Carbon:234Thorium ratios of sinking particles collected by sediment trap and large particles collected by in situ pump on CCE-LTER Process Cruises. 2006 - 2017 (ongoing).
The ratio of carbon to 234Thorium on particles can be used to convert water column 234Th measurements to sinking carbon flux estimates and to investigate particle scavenging in the ocean. Carbon:234Th ratios of two types of particles are measured: true sinking particles collected by sediment trap and large (>50-µm) particles collected using a McLane in situ Pump. Sinking particles are collected in VERTEX-style particle interceptor traps (PIT) with an 8:1 aspect ratio, 70-mm diameter, and a baffle on top comprised of 13 smaller beveled tubes with a similar 8:1 aspect ratio. Tubes are deployed with a formalin-brine for a duration of 2-5 days. After recovery, samples were gravity filtered through a 200-µm filter. The 200-µm filtered was then immediately examined under a stereomicroscope and mesozooplankton swimmers were removed from the sample. On P0704, P0810, and P1106 cruises the remaining (non-swimmer) portion of the material on the >200-µm filter was then re-combined with the <200-µm portion of the sample. Samples were then filtered through a pre-combusted quartz (QMA) filter. On P1208, P1604, and P1706 cruises the >200-µm and <200-µm fractions were filtered separately onto QMA filters to determine C:234Th ratios of different size classes of sinking particles. Typically, triplicate whole PIT tubes were filtered for C:234Th ratios. However, on some cycles with very high flux, samples were first split on a Folsom splitter. On some cycles, the mesozooplankton ‘swimmers’ were saved and filtered onto a separate QMA filter to quantify the C:234Th ratio of mesozooplankton. QMA filters were all dried and mounted in RISO sample holders. >50-µm particles were also collected using McLane in situ pumps (typically deployed for a period of ~1 hour at the same depth of the sediment traps). In situ pump samples were rinsed off of the 147-mm nitex mesh filters used with the pump onto a pre-combusted QMA filter, which was similarly dried and mounted in a RISO sample holder. Samples
Advanced Laser Fluorescence (ALF) measurements of chlorophyll-a (Chl), phycoerythrin (PE), chromophoric dissolved organic matter (CDOM), and variable fluorescence (Fv/Fm) from CCE process cruises in the California Current System, 2006 - 2012.
The Advanced Laser Fluorometry (ALF) provides spectral deconvolution (SDC) analysis of the laser-stimulated emission (LSE) excited at 405 or 532/510 nm for assessment of chlorophyll a, phycoerythrin, and chromophoric dissolved organic matter. Three spectral types of phycoerythrin are discriminated for characterization of cyanobacteria and cryptophytes in mixed phototrophic populations. The SDC analysis is integrated with measurements of variable fluorescence, Fv/Fm, corrected for the SDC-retrieved background fluorescence, BNC, for improved photophysiological assessments of phytoplankton photochemical efficiency. Fluorescence measurements are normalized to the water Raman scattering to improve the accuracy of measurements. The ALF measurements of discrete water samples from various depths were made using several ALF instrument modifications (ALF-1, ALF-T, Aquatic Laser Fluorescence Analyzer (ALFA) , or Custom Laser Analytical Spectroscopic System (CLASS)) during CCE process cruises.
ScienceDex guides
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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.