St. Petersburg Coastal and Marine Science Center
By Caitlin E. Reynolds,1, 2 Julie N. Richey,1 Jennifer S. Fehrenbacher,3 Brad E. Rosenheim,2 and Howard J. Spero4
1 U.S. Geological Survey, St. Petersburg, FL 33701, USA
2 College of Marine Science, University of South Florida, St. Petersburg, FL 33701, USA
3 College of Earth, Ocean and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA
4 Department of Earth and Planetary Sciences, University of California Davis, Davis, CA 95616, USA
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 (2008–2014) 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. We use individual foraminiferal analysis (IFA) of G. truncatulinoides tests to investigate differences in the elemental (Mg/Ca) and isotopic composition (δ18O and δ13C) of the encrusted and non-encrusted ontogenetic forms of G. truncatulinoides, and to estimate their calcification depth in the northern Gulf of Mexico.
For further information regarding data collection and/or processing methods as well as the associated published manuscript refer to Reynolds, C.E., Richey, J.N., Fehrenbacher, J.S., Rosenheim, B.E., and Spero, H.J., 2018 (in review), Environmental controls on the geochemistry of Globorotalia truncatulinoides in the Gulf of Mexico—Implications for paleoceanographic reconstructions: Marine Micropaleontology.
|File Name and Description||Metadata (XML format)||Metadata (text format)||Download File|
δ18O and δ13C (.csv).
Laser ablation (LA-ICP-MS) Mg and Ca values for every measurement on each individual foraminifera (.csv).
|Same as above||Same as above||Mg_Ca_Compiled_all.zip
Laser ablation (LA-ICP-MS) Mg and Ca values for every measurement averaged for each chamber on each individual foraminifera (.csv).
|Same as above||Same as above||Mg_Ca_Compiled_averages.zip
G. truncatulinoides raw counts and flux (.csv).
|Same as above||Same as above||Raw_Counts_and_Flux_Data.zip
Figure 1. Location of the sediment trap mooring in the Gulf of Mexico at approximately 27.5° N and 90.3° W (black triangle).
Reynolds, C.E., Richey, J.N., Fehrenbacher, J.S., Rosenheim, B.E., and Spero, H.J., 2018, Globorotalia truncatulinoides sediment trap data in the Gulf of Mexico: U.S. Geological Survey data release, https://doi.org/10.5066/F72806W4.