Betekenis van:
plankton

plankton
Zelfstandig naamwoord
  • in water zwevende organismen
  • the aggregate of small plant and animal organisms that float or drift in great numbers in fresh or salt water

Hyperoniemen


Voorbeeldzinnen

  1. Most whales feed on plankton.
  2. Whales feed on plankton and small fish.
  3. Plankton Extract is an extract obtained from marine plankton
  4. 1750 plankton/50 bottom trawls
  5. periodic sampling to detect changes in the composition of plankton containing toxins and their geographical distribution.
  6. Sampling plans to check for the presence of toxin-producing plankton in production and relaying waters and for biotoxins in live bivalve molluscs must take particular account of possible variations in the presence of plankton containing marine biotoxins.
  7. for the presence of toxin-producing plankton in production and relaying waters and biotoxins in live bivalve molluscs;
  8. The compensation may be granted where contamination of molluscs owing to the proliferation of toxin-producing plankton or the presence of plankton containing biotoxins entails, for public health protection reasons, suspension of the harvest:
  9. ‘Marine biotoxins’ means poisonous substances accumulated by bivalve molluscs, in particular as a result of feeding on plankton containing toxins.
  10. for the presence of toxin-producing plankton in production and relaying waters and biotoxins in live bivalve molluscs; and
  11. ‘clean seawater’ means natural, artificial or purified seawater or brackish water that does not contain micro-organisms, harmful substances or toxic marine plankton in quantities capable of directly or indirectly affecting the health quality of food;
  12. periodic sampling to detect changes in the composition of plankton containing toxins and their geographical distribution. Results suggesting an accumulation of toxins in mollusc flesh must be followed by intensive sampling;
  13. If the competent authority closes a production because of the presence of plankton or excessive levels of toxins in molluscs, at least two consecutive results below the regulatory limit separated at least 48 hours are necessary to re-open it.
  14. With regard to the monitoring of plankton, the samples are to be representative of the water column and to provide information on the presence of toxic species as well as on population trends.