Data from: Testing the applicability of a benthic foraminiferal-based transfer function for the reconstruction of paleowater depth changes in Rhodes (Greece) during the early Pleistocene
Milker, Yvonne, University of Hamburg
Weinkauf, Manuel F.G.
Titschack, Jürgen, Senckenberg am Meer
Freiwald, Andre, Senckenberg am Meer
Krüger, Stefan, Leipzig University
Jorissen, Frans J., University of Angers
Schmiedl, Gerhard, University of Hamburg
Weinkauf, Manuel F. G., University of Geneva
Published Nov 10, 2018 on Dryad.
Cite this dataset
Milker, Yvonne et al. (2018). Data from: Testing the applicability of a benthic foraminiferal-based transfer function for the reconstruction of paleowater depth changes in Rhodes (Greece) during the early Pleistocene [Dataset]. Dryad. https://doi.org/10.5061/dryad.349h0
We present paleo-water depth reconstructions for the Pefka E section deposited on the island of Rhodes (Greece) during the early Pleistocene. For these reconstructions, a transfer function (TF) using modern benthic foraminifera surface samples from the Adriatic and Western Mediterranean Seas has been developed. The TF model gives an overall predictive accuracy of ~50 m over a water depth range of ~1200 m. Two separate TF models for shallower and deeper water depth ranges indicate a good predictive accuracy of 9 m for shallower water depths (0-200 m) but far less accuracy of 130 m for deeper water depths (200-1200 m) due to uneven sampling along the water depth gradient. To test the robustness of the TF, we randomly selected modern samples to develop random TFs, showing that the model is robust for water depths between 20 and 850 m while greater water depths are underestimated. We applied the TF to the Pefka E fossil data set. The goodness-of-fit statistics showed that most fossil samples have a poor to extremely poor fit to water depth. We interpret this as a consequence of a lack of modern analogues for the fossil samples and removed all samples with extremely poor fit. To test the robustness and significance of the reconstructions, we compared them to reconstructions from an alternative TF model based on the modern analogue technique and applied the randomization TF test. We found our estimates to be robust and significant at the 95% confidence level, but we also observed that our estimates are strongly overprinted by orbital, precession-driven changes in paleo-productivity and corrected our estimates by filtering out the precession-related component. We compared our corrected record to reconstructions based on a modified plankton/benthos (P/B) ratio, excluding infaunal species, and to stable oxygen isotope data from the same section, as well as to paleo-water depth estimates for the Lindos Bay Formation of other sediment sections of Rhodes. These comparisons indicate that our orbital-corrected reconstructions are reasonable and reflect major tectonic movements of Rhodes during the early Pleistocene.
This file contains complete fossil benthic foraminiferal census counts (fraction >150 µm), total foraminiferal numbers, sample split, and (modified) plankton to benthos ratios (of the >125µm fraction) from the Pefka E section. In the first column the adjusted section depth (in cm) is given.
This file contains the complete modern dead benthic foraminiferal census counts (fraction >150 µm), total foraminiferal numbers, sample split, and sample volume from three study areas in the Western Mediterranean Sea (Alboran Platform, Oran Bight and Mallorca Shelf). In the first two columns the station IDs and the water depth (in m) is given.
This file contains the relative abundance of modern benthic foraminifera in the combined modern data set used for the development of the transfer function in this study. In the first two columns the station IDs and water depth (in m) is given.
This file contains the station IDs used in the Reduced_modern_data.txt, their original station IDs, water depth (in m) and station location (Adriatic Sea or Western Mediterranean Sea (Alboran Platform, Oran Bight and Mallorca Shelf)). The data from the Adriatic Sea are from Jorissen (1987, 1988):
-Jorissen FJ. The distribution of benthic foraminifera in the Adriatic Sea. Mar Micropaleontol. 1987;12:21-48.
-Jorissen FJ. Benthic foraminifera from the Adriatic Sea: principles of phenotypic variation. Utrecht Micropaleontological Bulletins. 1988;37:1-174.
This file contains the relative abundance of fossil benthic foraminifera from the Pefka E section used for the application of the transfer function in this study. In the first column the adjusted section depth (in cm) is given.