Abstract
Organic particles greater than 5 μ from 38 North Atlantic stations were examined using phase microscopy. Four morphological categories were evident: aggregates, flakes, fragments and unclassifiable particles. Judging from their reactions to histochemical stains, aggregates appear to be chiefly carbohydrate, flakes chiefly protein, and fragments completely carbohydrate. Total particle concentrations ranged from 32–253/ml in surface water and 12–27/ml in deep water. The abundance of aggregates was greatest in surface waters while that of flakes and fragments was generally constant with depth. Size-frequency measurements were made, and the suitability of particles as a food source and the factors affecting their distribution are discussed.
Published Version
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