Abstract

We present a detailed analysis of the seasonal distribution, size, morphological variability, and geochemistry of co‐occurring pink and white chromotypes of Globigerinoides ruber from a high‐resolution (1–2 weeks) and long‐running sediment trap time series in the northern Gulf of Mexico. We find no difference in the seasonal flux of the two chromotypes. Although flux of G. ruber is consistently lowest in winter, the flux‐weighted signal exported to marine sediments represents mean annual conditions in the surface mixed layer. We observe the same morphological diversity among pink specimens of G. ruber as white. Comparison of the oxygen and carbon isotopic composition (δ18O and δ13C) of two morphotypes (sensu stricto and sensu lato) of pink G. ruber reveals the isotopes to be indistinguishable. The test size distribution within the population varies seasonally, with the abundance of large individuals …

Metadata

publication

Paleoceanography and Paleoclimatology 34 (3), 353-373, 2019

year

2019

publication date

2019/3

authors

Julie N Richey, Kaustubh Thirumalai, Deborah Khider, Caitlin E Reynolds, Judson W Partin, Terrence M Quinn

link

https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018PA003417

resource_link

https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2018PA003417

journal

Paleoceanography and Paleoclimatology

volume

34

issue

3

pages

353-373