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生態系とは何か
An ecosystem is the interaction between all abiotic and biotic factors in an environment and can be classified as terrestrial or aquatic.…
栄養段階
All organisms in an ecosystem occupy a trophic level in the food chain. The lowest level consists of primary producers, which synthesize their food…
一次生産
The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers…
生産効率
Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic…
栄養効率
Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss…
生物地球化学的循環とは何か
The most common elements in organic molecules, carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus, are only available in the ecosystem in…
水循環
The Earth’s hydrosphere includes all of the areas where the storage and movement of water occurs. Since water is the basis of all living…
炭素循環
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged…
窒素循環
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of…
リン循環
Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as…
硫黄循環
Sulfur, an important element in the chemical makeup of proteins, is recycled through the atmosphere and aquatic and terrestrial environments. Found…
バイオレメディエーション
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful…
古代生物群集抱いて内部を調査するための冷凍コアの外側部分からの外因性物質の除去
The cryosphere offers access to preserved organisms that persisted under past environmental conditions. In fact, these frozen materials could reflect…
水性環境で炭化水素の変換を有効にするツールキット
This work puts forward a toolkit that enables the conversion of alkanes by Escherichia coli and presents a proof of principle of its applicability.…

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