Reconstruction of paleo–particulate organic carbon fluxes for the Campbell Plateau region of southern New Zealand using the zinc content of sponge spicules

Paleoceanography - Tập 20 Số 3 - 2005
Michael J. Ellwood1, Michelle Kelly2, Helen L Neil3, Scott D. Nodder3
1National Institute of Water and Atmospheric Research Ltd., Hamilton, New Zealand
2National Centre for Aquatic Biodiversity and Biosecurity, National Institute of Water and Atmospheric Research Ltd, Auckland, New Zealand
3National Institute of Water and Atmospheric Research Ltd., Wellington, New Zealand

Tóm tắt

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 μmol/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.

Từ khóa


Tài liệu tham khảo

10.1016/S0967-0645(01)00101-1

10.1016/S0967-0645(01)00005-4

10.3354/meps156051

10.1038/329408a0

10.1016/S0967-0645(01)00102-3

10.1029/1999JC900009

10.1038/35037500

10.1029/2002GB002020

10.1038/331055a0

10.1093/plankt/21.3.405

10.1016/S0022-0981(03)00045-5

10.1029/GB003i003p00215

10.1126/science.1086895

10.1080/00288330.1992.9516509

10.1029/2003PA000992

10.1080/00288330.1989.9516361

Carter L., 2001, Currents of change: The ocean flow in a changing world, Water Atmos., 9, 15

Carter L., 1997, The sedimentary regime beneath the deep western boundary current inflow to the southwest Pacific Ocean, J. Sediment. Res., 67, 1005

10.1016/S0025-3227(98)00205-9

L. Carter R. G. Garlick P. Sutton S. M. Chiswell N. A. Oien B. R. Stanton 1998 Natl. Inst. of Land and Atmos. Res. Auckland

10.1016/S0031-0182(00)00137-1

10.1016/S0025-3227(02)00509-1

10.1016/S0025-3227(04)00017-9

10.1029/2000GC000069

10.1016/S0967-0645(02)00595-7

10.1126/science.1089778

10.1016/S0012-821X(03)00283-8

10.1016/j.epsl.2004.06.019

10.1038/35012507

10.1016/S0304-4203(99)00037-7

10.1029/2004GL019648

10.1029/PA003i005p00621

10.1016/0198-0149(85)90014-7

10.1126/science.290.5490.291

10.1038/40073

10.1029/2001GB001722

10.1016/0304-4203(95)00057-7

10.1017/S0954102003001123

10.1007/978-94-011-2452-2_21

10.1038/35090552

10.1093/plankt/2.2.169

10.1126/science.218.4575.883

10.1016/S0967-0645(00)00077-1

10.1029/1999PA000425

10.1029/2001GB001765

10.1029/JD089iD03p04629

Koroleff I., 1976, Methods of Seawater Analysis, 134

10.1016/S0025-3227(97)00044-3

10.1038/378675a0

10.1016/0016-7037(96)00174-3

10.1016/0198-0149(85)90034-2

10.1016/S0012-821X(98)00191-5

10.1029/2000GB001383

10.1029/PA005i001p00001

10.1016/0198-0149(87)90086-0

10.1016/S0012-821X(02)00472-7

Martinson D. G., 1987, Age dating and the orbital theory of the ice‐ages: Development of a high‐resolution 0 to 300,000 year chronostratigraphy, Quat. Res., 27, 1, 10.1016/0033-5894(87)90046-9

10.1029/95PA01427

10.1080/00288330.2001.9517018

10.1080/00288330.2001.9517005

10.1029/2003PA000975

C. S. Nelson C. H. Hendy A. M. Cuthbertson 1993 Univ. of Waikato Hamilton New Zealand

10.1016/S0031-0182(99)00134-0

10.1080/00288330.1998.9516836

10.1016/S0967-0637(00)00062-5

10.1029/2001GL013008

10.1016/S0967-0637(03)00094-3

10.1126/science.1084451

10.1038/20859

10.1038/308621a0

10.1016/0304-4203(88)90113-2

10.1016/S0967-0637(97)00028-9

10.1038/308624a0

10.1038/35038000

10.1016/0967-0645(96)00015-X

10.1029/2002JC001339

10.1038/35004556

10.1016/S0016-7037(97)00358-X

10.1038/288260a0

10.1357/0022240943076768

10.4319/lo.1992.37.1.0025

10.4319/lo.2000.45.7.1501

10.1080/00288330.2003.9517195

Thiel H., 1988, Phytodetritus on the deep‐sea floor in a central oceanic region of the northeast Atlantic, Biol. Oceanogr., 6, 203

10.1029/2000JC000308

10.1029/97PA02982

Thông tin
Thông tin xuất bản

Paleoceanography

Tập 20 Số 3

Thông tin tác giả