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Aquatic macroinvertebrate subsampling equipment

  • US 9,513,194 B2
  • Filed: 05/18/2011
  • Issued: 12/06/2016
  • Est. Priority Date: 05/19/2010
  • Status: Active Grant
First Claim
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1. An apparatus for subsampling water macroinvertebrate comprising:

  • a) an external tray comprising;

    i) a reinforcement edge adapted to assist in supporting a weight of the apparatus and keeping a shape of the apparatus;

    ii) a water outlet system;

    iii) an S-shaped leg support system arranged in parallel to a water flow line so as to jointly avoid a loss of tray shape and a backflow phenomenon; and

    iv) a system adapted for correctly positioning the apparatus, wherein the system is of a bobble or pendulum type;

    v) a net to filter biota and sediment, wherein the biota and sediment filter net is sized from 500 μ

    m to 1 mm;

    b) an internal tray comprising;

    i) a drainage system comprising a water drain outlet with holes equally distributed on a base of the apparatus;

    ii) a support system; and

    iii) a separator formed by quadrats comprising a set of plates that fit each other in a perpendicular manner, with 24 quadrants sized according to the internal tray in which they are to fit perfectly, and wherein the internal tray fits into the external tray.

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