Ellwood, Michael J; Kelly, Michelle; Neil, Helen L; Nodder, Scott D (2005): (Table 2) Zn/Si ratios for sponge spicules from sediment core samples [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.836800, Supplement to: Ellwood, MJ et al. (2005): Reconstruction of paleo-particulate organic carbon fluxes for the Campbell Plateau region of southern New Zealand using the zinc content of sponge spicules. Paleoceanography, 20(3), PA3010, https://doi.org/10.1029/2004PA001095
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2005 (exact date unknown) • DOI registered: 2014-11-13
Abstract:
The zinc concentration of siliceous sponge spicules was determined from spicules recovered from four sediment cores spanning the last 160 kyr, from the Campbell Plateau region southeast of New Zealand. Zinc/Si results showed little difference between Holocene and glacial aged spicules. An increase in Zn/Si was observed for core Y14, where Zn/Si peaked at about 0.6 mmol/mol during marine isotope stages 5a-5b. To better understand the role carbon export has on sponge Zn/Si, we explored the strong relationship observed between surficial sediment particulate organic carbon (POC) and the Zn/Si of sponge silica and related this to sediment trap POC flux estimates. Conversion of the Zn/Si records to benthic POC fluxes suggests that there has been little change in the amount of POC reaching Campbell Plateau sediments over the past 30 kyr. These results suggest that surface productivity over the Campbell Plateau has remained relatively low over the past 160 kyr and suggests that glacial productivity was not significantly higher than the present day. Finally, this work reveals that living marine sponges appear to act as the biological equivalents of moored sediment traps, recording the flux of POC to the seafloor by archiving zinc associated with sinking POC in the growing silica skeleton.
Coverage:
Median Latitude: -49.641617 * Median Longitude: 176.253033 * South-bound Latitude: -51.335170 * West-bound Longitude: 169.755500 * North-bound Latitude: -46.970800 * East-bound Longitude: -177.990000
Date/Time Start: 1997-02-15T00:00:00 * Date/Time End: 1997-02-15T00:00:00
Minimum DEPTH, sediment/rock: 0.0150 m * Maximum DEPTH, sediment/rock: 2.9050 m
Event(s):
Q585 * Latitude: -49.670000 * Longitude: -177.990000 * Elevation: -4354.0 m * Recovery: 2.07 m * Method/Device: Gravity corer (GC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 6 | Depth, top/min | Depth top | m | Ellwood, Michael J | ||
| 7 | Depth, bottom/max | Depth bot | m | Ellwood, Michael J | ||
| 8 | Zinc/Silicon ratio | Zn/Si | µmol/mol | Ellwood, Michael J | ||
| 9 | Sample amount | N | # | Ellwood, Michael J | ||
| 10 | Sample amount, subset | N subset | # | Ellwood, Michael J | rejected | |
| 11 | Age model | Age model | ka | Ellwood, Michael J |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
509 data points