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Updated: Jul 12, 2025

Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading
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来自北极环保湖浅区域的高内部负荷:来自孔水地质化学的洞察力

Siqi Zhao1, Martijn Hermans2, Juha Niemistö3

  • 1Ecosystems and Environment Research Program, Faculty of Biological and Environmental Sciences, University of Helsinki, Viikinkaari 1, P.O. Box 65, FI-00014 Helsinki, Finland; Environmental Geochemistry Group, Department of Geosciences and Geography, Faculty of Science, University of Helsinki, Gustaf Hällströmin katu 2, P.O. Box 64, FI-00014 Helsinki, Finland.

The Science of the total environment
|October 21, 2023
PubMed
概括

内部加载燃料湖的环氧化. 在富含铁的湖泊中,有机物再矿化和铁结合溶解驱动P释放,即使在氧气条件下,也会影响湖泊的恢复.

关键词:
扩散性流量是一种扩散性流量.恢复湖泊的恢复工作的再生是一种的再生.减少性溶解是一种减少性溶解.重矿化是一种重矿化.浅的地区是浅的地区.

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The Phosphorus Cycle01:21

The Phosphorus Cycle

Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.
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Primary Production01:06

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The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
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Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
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