Yamaguchi, Tatsuhiko; Norris, Richard D (2012): (Appendix A) Abundance of ostracode species from DSDP Hole 48-401 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.811195, Supplement to: Yamaguchi, T; Norris, RD (2012): Deep-sea ostracode turnovers through the Paleocene-Eocene thermal maximum in DSDP Site 401, Bay of Biscay, North Atlantic. Marine Micropaleontology, 86-87, 32-44, https://doi.org/10.1016/j.marmicro.2012.02.003
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Abstract:
Previous low resolution studies suggest that ostracodes, in contrast with deep sea foraminifera, largely survived the massive environmental changes of the Paleocene–Eocene thermal maximum (PETM). In a new high-resolution study from the continental slope (~1800 m paleodepth) NE Atlantic, we also find extensive survivorship of ostracode faunas, but this is accompanied by a temporary drop in species diversity and ecological diversity during the PETM. There are 12 common ostracode species before the PETM that are reduced to only two species at the same time as the benthic foraminiferal extinction event. All but three species reappear in the later parts of the PETM and statistical analysis suggests that most of the apparent “Lazarus” species might be found with sufficient sampling of PETM faunas. We find no evidence for an excursion fauna of ostracodes as has been detected in calcareous nannofossils, planktic foraminifera, and benthic foraminifera. However, the ostracode assemblages changed from a relatively diverse ecological assemblage before and after the PETM to one dominated by infaunal species typical of low oxygen conditions during the PETM. The absence of major extinction and the temporary nature of species disappearances are comparable to turnovers in shallow marine ostracodes and stands in sharp contrast to the ~ 50% species-level extinction in benthic foraminifers.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 47.427500 * Longitude: -8.810300
Date/Time Start: 1976-06-06T00:00:00 * Date/Time End: 1976-06-06T00:00:00
Minimum DEPTH, sediment/rock: 198.54 m * Maximum DEPTH, sediment/rock: 204.45 m
Event(s):
48-401 * Latitude: 47.427500 * Longitude: -8.810300 * Date/Time: 1976-06-06T00:00:00 * Elevation: -2495.0 m * Penetration: 341 m * Recovery: 103.1 m * Location: North Atlantic/TERRACE * Campaign: Leg48 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 24 cores; 228 m cored; 38 m drilled; 45.2 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Yamaguchi, Tatsuhiko | DSDP/ODP/IODP sample designation | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode – mbsf | ||
| 3 | Depth, top/min | Depth top | m | Yamaguchi, Tatsuhiko | ||
| 4 | Depth, bottom/max | Depth bot | m | Yamaguchi, Tatsuhiko | ||
| 5 | Abyssobairdia sp. | Abyssobairdia sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | |
| 6 | Argilloecia sp. | Argilloecia sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | |
| 7 | Bythoceratina sp. | Bythoceratina sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | |
| 8 | Cardobairdia sp. | Cardobairdia sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | |
| 9 | Cytherella sp. | Cytherella sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | sp. 1 |
| 10 | Cytherella sp. | Cytherella sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | sp. 2 |
| 11 | Cytheropteron sp. | Cytheropteron sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | sp. 1 |
| 12 | Cytheropteron sp. | Cytheropteron sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | sp. 2 |
| 13 | Eucythere sp. | Eucythere sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | |
| 14 | Krithe crassicaudata | K. crassicaudata | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | |
| 15 | Krithe sp. | Krithe sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | sp. 1 |
| 16 | Krithe sp. | Krithe sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | sp. 2 |
| 17 | Neonesidea cymbula | N. cymbula | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | |
| 18 | Paleoabyssocythere sp. | Paleoabyssocythere sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | |
| 19 | Phacorhabdotus sp. | Phacorhabdotus sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | |
| 20 | Platyleberis sp. | Platyleberis sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | |
| 21 | Poseidonamicus sp. | Poseidonamicus sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | |
| 22 | Trachyleberidea sp. | Trachyleberidea sp. | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | |
| 23 | Ostracoda indeterminata | Ostrac indet | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | Gen. et sp. indet. 1 |
| 24 | Ostracoda indeterminata | Ostrac indet | # | Yamaguchi, Tatsuhiko | Counting >115 µm fraction | Gen. et sp. indet. 2 |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2068 data points
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