{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Caitlin E. Reynolds", "hasEmail": "mailto:creynolds@usgs.gov"}, "description": "Modern observations of planktic foraminifera from sediment trap studies help to constrain the regional ecology of paleoceanographically valuable species. Results from a weekly-resolved sediment trap time series (2008\u20132014) in the northern Gulf of Mexico demonstrate that 92% of Globorotalia truncatulinoides flux occurs in winter (January, February, and March), and that encrusted and non-encrusted individuals represent calcification in distinct depth habitats. Individual foraminiferal analysis (IFA) of G. truncatulinoides tests were used to investigate differences in the elemental Magnesium/Calcium (Mg/Ca) and isotopic composition (\u03b418O and \u03b413C) of the encrusted and non-encrusted ontogenetic forms of G. truncatulinoides, and to estimate their calcification depth in the northern Gulf of Mexico. Estimates show that non-encrusted and encrusted G. truncatulinoides have mean calcification depths of 66 \u00b1 9 meters and 393 \u00b1 83 meters, respectively. The Mg/Ca-calcification temperature relationship was validated for G. truncatulinoides and demonstrated that the \u03b418O and Mg/Ca of the non-encrusted form is a suitable proxy for winter surface mixed layer conditions in the Gulf of Mexico. Care should be taken not to combine encrusted and non-encrusted individuals of G. truncatulinoides for down core paleoceanographic studies. For further information regarding data collection and/or processing methods as well as the associated published manuscript refer to Reynolds and others (2018b).", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/F72806W4", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.bc4eb326-4538-4533-8712-ba3473356680.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_bc4eb326-4538-4533-8712-ba3473356680", "keyword": ["Gulf of Mexico", "Louisiana", "USGS:bc4eb326-4538-4533-8712-ba3473356680", "biota", "carbon isotope analysis", "ecology", "environment", "foraminifera", "geochemistry", "geoscientificInformation", "light stable isotope analysis", "marine geology", "micropaleontology", "oceans", "oxygen isotope analysis", "plankton", "protists"], "modified": "2023-09-11T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-90.3, 27.5, -90.3, 27.5", "theme": ["geospatial"], "title": "Globorotalia truncatulinoides Sediment Trap Data in the Gulf of Mexico"}