The Mk II sampler: a device to collect sediment cores for analysis of uncontaminated DNA |
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| Authors: | D T Feek M Horrocks W T Baisden J Flenley |
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| Institution: | (1) Geography Programme, School of People, Environment and Planning, Massey University, Palmerston North, New Zealand;(2) Microfossil Research Ltd, 31 Mont Le Grand Rd., Mt Eden, Auckland, 1024, New Zealand;(3) School of Environment, University of Auckland, Auckland, New Zealand;(4) National Isotope Centre, GNS Science, PO Box 31312, Lower Hutt, 5040, New Zealand |
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| Abstract: | We describe an improved piston corer, the Mk II, for sampling soft sediments for ancient DNA analysis. The original Mk I model,
designed to minimize contamination and successfully used in New Zealand, was subsequently deployed on Easter Island where
three problems arose. Two of these problems related to sediment and water entering the core barrel and contaminating samples.
The other difficulty was that plant material accumulated ahead of the piston and blocked the corer aperture. Design improvements
were made to the prototype model and eliminated these problems. |
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