Elutriation: Theoretical Considerations and Methodological Improvements
نویسنده
چکیده
The conventional elutriation method used for separating meiofauna and sediment yields insufficiently correct quantitative results. A critical evaluation of the physical background of this method leads to the construction of a differently shaped separation funnel and to improvements allowing better controlled, gradual variations in waterflow velocity and sieve mesh sizes. Comparative tests of the conventional and the new method, using similarly composed coral sediments and organism mixtures demonstrated a significantly higher efficiency of the new method: only 5 "/r~ of the organisms contained in the test samples disappeared with the new method, compared with 16 "/c, using the conventional one. Moreover, the new method elutriates with a much higher degree of purity: an average of 23 mg sediment accumulated in the sieves, as opposed to 2380 mg with the old method.
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تاریخ انتشار 2006