Atmospheric inputs of dissolved organic nitrogen to the oceans
Article Abstract:
Dissolved organic nitrogen in rain and snow was analyzed to reveal that dissolved organic nitrogen constitutes a substantial portion of the precipitation even in the remotest areas though most nitrogen estimates include only inorganic nitrogen. The results indicate nearly doubling of the present estimates of the atmospheric input of fixed nitrogen to the oceans and an approximately 1.5 times increase in estimates of the total fixed nitrogen is necessary to generate accurate figures representing human influence on the global nitrogen cycle.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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A major biopolymeric component to dissolved organic carbon in surface sea water
Article Abstract:
Marine research indicates that neutral sugars, acetate and lipid molecules bond to form a common macromolecule used in photosynthesis. As much as seven-tenths of ultrafiltered dissolved organic matter and one-fifth of total DOC in surface sea water contains acyl oligosaccarides which have been synthesized through photosynthesis. Roughly equal measurements of macromolecular dissolved organic carbon are contained within photosynthesis building block molecules at sites in the Atlantic and Pacific oceans.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Sea change in sediments
Article Abstract:
The early biosphere is explored by analyzing the chemical footprint left by microorganisms on an ocean floor some 1.6 billion years ago in the absence of complex body fossils laid by microorganisms and the way such a foot print would look in this modern world is compared. The analysis confirm geochemical evidence of changes in the composition of Earth's oceans and atmosphere that occurred over a long period around two billion years ago.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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