Davis, Catherine V; Badger, Marcus P S; Bown, Paul R; Schmidt, Daniela N (2013): Size normalized planktic foraminifera weight and coccolith diameter from DSDP Site 607 and ODP Site 999 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.837539, Supplement to: Davis, CV et al. (2013): The response of calcifying plankton to climate change in the Pliocene. Biogeosciences, 10(9), 6131-6139, https://doi.org/10.5194/bg-10-6131-2013
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Abstract:
As a result of anthropogenic pCO2 increases, future oceans are growing warmer and lower in pH and oxygen, conditions that are likely to impact planktic communities. Past intervals of elevated and changing pCO2 and temperatures can offer a glimpse into the response of marine calcifying plankton to changes in surface oceans under conditions similar to those projected for the future. Here we present new records of planktic foraminiferal and coccolith calcification (weight and size) from Deep Sea Drilling Project Site 607 (mid-North Atlantic) and Ocean Drilling Program Site 999 (Caribbean Sea) from the Pliocene, the last time that pCO2 was similar to today, and extending through a global cooling event into the intensification of Northern Hemisphere glaciation (3.3 to 2.6 million years ago). Test weights of both surface-dwelling Foraminifera Globigerina bulloides and thermocline-dwelling Foraminifera Globorotalia puncticulata vary with a potential link to regional temperature variation in the North Atlantic, whereas in the tropics Globigerinoides ruber test weight remains stable. In contrast, reticulofenestrid coccoliths show a narrowing size range and a decline in the largest lith diameters over this interval. Our results suggest no major changes in plankton calcite production during the high pCO2 Pliocene or during the transition into an icehouse world.
Further details:
Lisiecki, Lorraine E; Raymo, Maureen E (2005): A Pliocene-Pleistocene stack of 57 globally distributed benthic d18O records. Paleoceanography, 20, PA1003, https://doi.org/10.1029/2004PA001071
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 26.872600 * Median Longitude: -55.848300 * South-bound Latitude: 12.744000 * West-bound Longitude: -78.739300 * North-bound Latitude: 41.001200 * East-bound Longitude: -32.957300
Date/Time Start: 1983-07-06T00:00:00 * Date/Time End: 1996-01-14T23:15:00
Minimum DEPTH, sediment/rock: 84.61 m * Maximum DEPTH, sediment/rock: 139.37 m
Event(s):
94-607_Site * Latitude: 41.001200 * Longitude: -32.957300 * Date/Time: 1983-07-06T00:00:00 * Elevation: -3427.0 m * Penetration: 5.957 m * Recovery: 4.537 m * Location: North Atlantic/FLANK * Campaign: Leg94 * Basis: Glomar Challenger * Method/Device: Composite Core (COMPCORE) * Comment: 56 cores; 511 m cored; 0 m drilled; 88.8% recovery
165-999A * Latitude: 12.744000 * Longitude: -78.739300 * Date/Time Start: 1996-01-10T19:30:00 * Date/Time End: 1996-01-14T23:15:00 * Elevation: -2828.0 m * Penetration: 566.1 m * Recovery: 534.83 m * Location: Caribbean Sea * Campaign: Leg165 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 61 core; 566.1 m cored; 0 m drilled; 94.5 % recovery
Comment:
Sediment depth is given in mcd, age after Lisiecki and Raymo (2005).
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Davis, Catherine V | DSDP/ODP/IODP sample designation | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 4 | AGE | Age | ka BP | Geocode | ||
| 5 | Accumulation rate, calcium carbonate | Acc rate CaCO3 | g/cm2/ka | Davis, Catherine V | Calculated | |
| 6 | Sedimentation rate | SR | cm/ka | Davis, Catherine V | Calculated | |
| 7 | Fragmentation index | F index | # | Davis, Catherine V | Calculated after Berger (1968) | whole to fragments index |
| 8 | Sand | Sand | % | Davis, Catherine V | ||
| 9 | Globorotalia puncticulata, shell, weight | G. puncticulata shell W | µg | Davis, Catherine V | mean test weight | |
| 10 | Globigerina bulloides, shell, weight | G. bulloides shell W | µg | Davis, Catherine V | Size normalized | |
| 11 | Globigerinoides ruber, shell, weight | G. ruber shell W | µg | Davis, Catherine V | Size normalized | |
| 12 | Coccoliths, diameter | Coccol diam | µm | Davis, Catherine V | ||
| 13 | Coccoliths | Cocco | % | Davis, Catherine V | Counting >5 µm fraction |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1059 data points