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Distribution of Chlorinated Hydrocarbon Pesticides and PCBs in the ...

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ICE ISLAND PLANKTON SAMPLES<br />

28 May 1986<br />

Species Composition Tow<br />

Jar '86- 120<br />

Dom<strong>in</strong>ant Species;<br />

253 pm Mesh, 1 m diam. Net<br />

Vertical Tow Depth: 303 - 0 m<br />

Flowmeter: 3687 Revs: 1693<br />

Time: 1042- 1052<br />

Calanus hv~erboreu~<br />

Adult Females, Copepodite Stages V, IV, I11<br />

Calanus glacialis<br />

Adult Females,Copepodite Stages V, IV, I11<br />

Metridia Ion@<br />

Adult Females & Males, Copepodite Stages V, IV<br />

The above three species contribute most <strong>of</strong> <strong>the</strong> biomass <strong>and</strong> are also<br />

numerically dom<strong>in</strong>ant. There is a much greater presence <strong>of</strong> juvenile<br />

stages than <strong>in</strong> any <strong>of</strong> <strong>the</strong> 460 pm samples.<br />

Large Species:<br />

tta -a (Ch-) (1 specimen -45 mm)<br />

Eukrohnia hamata (Chaetognath) (Several -30 mm)<br />

S~ecies Noted; (Present, but not abundant)<br />

Euchaeta ~lacialis Copepoda<br />

Gaidius tenuispi-&us<br />

FalopUlus acutifrons<br />

Microcrnus SPr<br />

Oithona similis<br />

Pseudocalanus sp,<br />

$colecithricella m<strong>in</strong>or<br />

hoecia bordki Ostracoda

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