04.03.2014 Views

Zooplankton of the open Baltic: Extended Atlas - IOW

Zooplankton of the open Baltic: Extended Atlas - IOW

Zooplankton of the open Baltic: Extended Atlas - IOW

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Finally, <strong>the</strong> net must be rinsed with seawater from outside. The sample<br />

concentrated in <strong>the</strong> cod end will be transferred to a sample jar and preserved<br />

by buffered formalin with a final concentration <strong>of</strong> 4%. Labeling <strong>of</strong> <strong>the</strong> sample<br />

jar inside and outside by station number, date, time, and sampling depth<br />

interval is important.<br />

3.3. Sampling and study <strong>of</strong> microzooplankton<br />

In order to study planktonic ciliates, most hydrobiologists collect water<br />

in routine, oceanographic sampling bottles (e.g. Niskin bottles). Firstly, it<br />

minimizes <strong>the</strong> cell disruption due to <strong>the</strong> turbulence and pressure, caused by<br />

pumps and plankton nets (Gifford & Caron, 2000). Moreover, plankton nets<br />

collect only a large fraction <strong>of</strong> ciliates (such as Tintinnids, in pioneering<br />

studies), but let nano-ciliates (

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!