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9 Critical Factors in Plankton Abundance

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Nutrients<br />

Nitrogen - what for?<br />

Nitrates NO 3 - MOST ABUNDANT SOURCE<br />

USUALLY<br />

Nitrites NO 2 -<br />

Ammonium ion, NH 4 - excretion product<br />

recycl<strong>in</strong>g from animal excretion <strong>in</strong> the<br />

water column - TAKEN UP THE FASTEST

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