Organic compounds, which are present in every drop of ocean water, in every particle of suspended material, have either been first created in the ocean by photosynthesizing plants (autochthonous organic matter) or reached the ocean from land (allochthonous organic matter). Undoubtedly the allochthonous component had also once been initially created in the process of photosynthesis, but thereafter its progress was tortuous and often long, involving an incomplete utilization in trophic chains, deposition, consolidation and “maturing” until it arrived in the ocean. Genetically it is related to the land phytomass, the soil humus and organic matter in the old rocks. Living organic matter being supplied as part of some or other source into the ocean from dry land, for instance with river waters, constitutes an insignificant portion of total allochthonous organic matter. It can only serve as an indicator of fresh-water conditions (Rubenchik 1972).
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- Sources of Organic Matter in the Ocean
Dr. Evgenii A. Romankevich
- Springer Berlin Heidelberg