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Updated: May 22, 2025

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations
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The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

Published on: August 3, 2016

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太阳光驱动淡水和海洋中氧化的非生物形成

Elizabeth Leon-Palmero1,2, Rafael Morales-Baquero1, Bo Thamdrup2

  • 1Departamento de Ecología, Universidad de Granada, Granada, Spain.

Science (New York, N.Y.)
|March 13, 2025
PubMed
概括

太阳光驱动了一种新的途径,光化化,在水中产生氧化 (N2O). 这种以前未知的N2O来源可能会对全球温室气体预算和臭氧消耗产生重大影响.

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Primary Production01:06

Primary Production

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Overview of Nitrogen Metabolism

Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of  ammonia, ammonium ions, nitrate, nitrite, or  nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
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The Sulfur Cycle

Sulfur, an important element in the chemical makeup of proteins, is recycled through the atmosphere and aquatic and terrestrial environments. Found in the atmosphere as sulfur dioxide (SO2), sulfur is released by decaying organisms, weathered rocks, geothermal vents, volcanos, and burning fossil fuels. It is deposited into the ecosystem, cycled through the biotic community, and either released back into the atmosphere as gas or deposited in marine sediment for long-term storage and eventual...
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The Equilibrium Constant

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