関連する実験動画

Updated: Sep 9, 2025

Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading
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Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading

Published on: March 6, 2014

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塩素aとリン濃度の空間的パターンを結びつけること:河川の長さと上流の湖の制御 ドイツの河川で実現された優化

Alexander Hubig1, Andreas Musolff1, Tom Shatwell2

  • 1Department of Hydrogeology, Helmholtz-Centre for Environmental Research - UFZ, Permoserstr. 15, 04318 Leipzig, Germany.

Water research
|August 28, 2025
PubMed
まとめ

植物プランクトンの開花を予測できないため,フォスファースの減少は河川の優化管理に不可欠です. 河川の長さや上流の湖などの要因は,特に気候の変化により,花の強さに大きく影響します.

キーワード:
クロロフィルAエウトロフィケーション押収する大きな川水の停留時間

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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

Primary Production

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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