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28 results for “stable isotope ratio”
Stable isotope ratios data of NEREA Augmented Observatory
<p>Samples were collected at 1m depth or along the whole water column using Niskin bottles and plankton nets, transferred into bins or jars and transported to the laboratory, where the individual size fractions were isolated. For each size fraction, samples were frozen and freeze-dried individually. Carbon and nitrogen stable isotope values (‰) were determined at the Stable Isotope Facility at the University of california in Davis (USA).</p>
Pulleniatina obliquiloculata stable oxygen isotope and Mg/Ca ratios record from IODP Core 363-U1483
<p><span>We carry out our work on a total of 202 sediment samples spanning the past ~400 kyr from IODP Core 363-U1483 (13.09°S, 121.80°E; water depth: 1733 m), which was recovered at the Timor Sea in the outflow area of the Indonesian Throughflow. In this study, we present Mg/Ca ratios and stable oxygen isotope from tests of planktonic foraminiferal Pulleniatina obliquiloculata, respectively.</span></p>
Globigerinoides ruber stable oxygen isotope and Mg/Ca ratios record from IODP Core 363-U1483
<p>We carry out our work on a total of 202 sediment samples spanning the past ~400 kyr from IODP Core 363-U1483 (13.09°S, 121.80°E; water depth: 1733 m), which is located close to the southern margin of the ITCZ's latitudinal displacement in the outflow area of the Indonesian Throughflow. In this study, we present Mg/Ca ratios and stable oxygen isotope from tests of planktonic foraminiferal Globigerinoides ruber, respectively.</p>
Ratio of 18O to 16O Stable Isotopes in Tree Stem Cores at HJA, HFR, NWT, CWT, LUQ, and Barro Colorado Island
Patterns of biodiversity, such as the increase toward the tropics and the peaked curve during ecological succession, are fundamental phenomena for ecology. Such patterns have multiple, interacting causes, but temperature emerges as a dominant factor across organisms from microbes to trees and mammals, and across terrestrial, marine, and freshwater environments. However, there is little consensus on the underlying mechanisms, even as global temperatures increase and the need to predict their effects becomes more pressing. The purpose of this project is to generate and test theory for how temperature impacts biodiversity through its effect on biochemical processes and metabolic rate. A combination of standardized surveys in the field and controlled experiments in the field and laboratory measure diversity of three taxa -- trees, invertebrates, and microbes -- and key biogeochemical processes of decomposition in seven forests distributed along a geographic gradient of increasing temperature from cold temperate to warm tropical. The most abundant tree species (by basal area) were sampled at each experimental site (HJA, HFR, NWT, CWT, LUQ, and Barro Colorado Island) for ratio of stable isotopes of 18 Oxygen to 16 Oxygen in parts per million from ground and homogenized tree stem cores as part of a macrosystems biodiversity and latitude project supported by the National Science Foundation under Cooperative Agreement DEB#1065836. .
Leaf, stem, and root stable carbon isotope ratios and gas exchange data for 452 plants
<p>This dataset contains a compilation of stable carbon isotope ratios in leaves, stems, and roots for tree saplings and associated gas exchange data. It was used in a book chapter to test whether the relationship between carbon isotope discrimination and the ratio of intercellular to ambient carbon dioxide concentrations differs between leaves and woody tissues. The book chapter is entitled 'Carbon isotope effects in relation to CO<sub>2</sub> assimilation by tree canopies' authored by Lucas A. Cernusak and Nerea Ubierna. It is part of the book entitled 'Stable Isotopes in Tree Rings' edited by Rolf T. Siegwolf, J. Renee Brooks, John Roden, and Matthias Saurer. The publisher of the book is Springer International Publishing, with publication in April 2022.</p>
Microplasma emission spectroscopy of stable isotope ratios in carbon dioxide
<p>Work material related to the published article.</p>
Data from: Important impacts of tissue selection and lipid extraction on ecological parameters derived from stable isotope ratios
Open the record for dataset details and reuse information.
Leaf, stem, and root stable carbon isotope ratios and gas exchange data for 452 plants
Open the record for dataset details and reuse information.
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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.