Foraminifera in a New Zealand salt marsh and their suitability as sea-level indicators |
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| Institution: | 1. Biodiversity (Palaeobiology) Group, Agharkar Research Institute, Pune, Maharashtra 411004, India;2. Bioenergy Group, Agharkar Research Institute, Pune, Maharashtra 411004, India;1. Institute of Geosciences, University of Kiel, Otto-Hahn-Platz 1, D-24118, Kiel-Germany;2. NIOZ-Royal Netherlands Institute for Sea Research, Landsdiep 4, NL-1797 SZ Texel, The Netherlands;3. Institute of Geology and Geoinformation, Geological Survey of Japan, AIST. Central 7, Higashi 1-1-1, Tsukuba, Ibaraki, 305-8567, Japan;4. Institute of Marine Geology and Geophysics, VAST, 18 Hoang Quoc, Hanoi, Vietnam;5. Geological and Paleontological Institute, University of Basel, Bernoullistrasse 32, CH-4056 Basel, Switzerland |
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| Abstract: | Vertical distributions of live and dead foraminiferal abundances are investigated in a salt marsh at Pounawea in southeastern New Zealand for potential use in Holocene sea-level reconstructions. Statistical analyses are conducted to determine whether dead foraminiferal abundances can be utilised as a proxy for elevation in southeastern New Zealand. It is concluded that dead salt-marsh foraminifera, which can predict elevations to within ± 5 cm or better, are precise sea-level proxies. Holocene sea-level reconstructions along the tectonically stable Catlins Coast based on fossil salt-marsh foraminifera can therefore serve as a potential baseline tool to estimate relative vertical tectonic displacement along tectonically active coasts in New Zealand. |
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