Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

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.
Production Efficiency01:01

Production Efficiency

Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).
Trophic Efficiency00:46

Trophic Efficiency

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 as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.
Calculation of Electric Flux01:25

Calculation of Electric Flux

Consider the electric field of an oppositely charged, parallel-plate system and an imaginary box between those plates. Let the bottom face of the box be ABCD, and the top face be FGHK. The electric field between the plates is uniform and points from the positive plate toward the negative plate. The calculation of this field's flux through the box's various faces shows that the net flux through the box is zero. Why does the flux cancel out here?
Origin of Photosynthesis01:26

Origin of Photosynthesis

Photosynthesis represents a fundamental biological process that transformed Earth's atmosphere and paved the way for complex life. Emerging roughly 3.4–3.8 billion years ago, the earliest photosynthetic organisms harnessed light energy to produce organic compounds. These anoxygenic phototrophs used electron donors like hydrogen sulfide (H₂S) or ferrous iron (Fe²⁺), rather than water, and did not release molecular oxygen (O₂) as a byproduct. Various groups, including green sulfur and purple...
Calculation of First Law Quantities I01:25

Calculation of First Law Quantities I

Thermodynamic systems undergoing phase transitions or temperature changes experience energy transfer in the form of heat (q) and work (w). For a reversible phase change at constant temperature (T) and pressure (p), the process involves no chemical reaction but results in energy exchange between distinct phases.The heat transferred during this process corresponds to the latent heat of transition, which is the amount of heat energy absorbed or released by a substance when it changes from one...

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Environmental impacts of nitrogen emissions in China and the role of policies in emission reduction.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2020
Same author

Structure and function of the antennae of Euphydryas editha (Lepidoptera: Nymphalidae).

Journal of morphology·2018
Same author

THE POPULATION BIOLOGY OF THE BUTTERFLY, EUPHYDRYAS EDITH A VII. HAS E. EDITH A EVOLVED A SERPENTINE RACE?

Evolution; international journal of organic evolution·2017
Same author

ADULT MOVEMENTS AND POPULATION STRUCTURE IN EUPHYDRYAS EDITHA.

Evolution; international journal of organic evolution·2017
Same author

Coevolution: Patterns of legume predation by a lycaenid butterfly.

Oecologia·2017
Same author

Nutrient dynamics on a precipitation gradient in Hawai'i.

Oecologia·2017

関連する実験動画

Updated: Jul 12, 2026

Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites
09:05

Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites

Published on: June 24, 2019

純一次生産:元の計算について

P M Vitousek, P R Ehrlich, A H Ehrlich

    Science (New York, N.Y.)
    |February 13, 1987
    PubMed
    まとめ

    No abstract available in PubMed .

    さらに関連する動画

    A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters
    06:02

    A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters

    Published on: December 16, 2022

    Visualization of Productivity Zones Based on Nitrogen Mass Balance Model in Narragansett Bay, Rhode Island
    05:04

    Visualization of Productivity Zones Based on Nitrogen Mass Balance Model in Narragansett Bay, Rhode Island

    Published on: July 14, 2023

    関連する実験動画

    Last Updated: Jul 12, 2026

    Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites
    09:05

    Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites

    Published on: June 24, 2019

    A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters
    06:02

    A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters

    Published on: December 16, 2022

    Visualization of Productivity Zones Based on Nitrogen Mass Balance Model in Narragansett Bay, Rhode Island
    05:04

    Visualization of Productivity Zones Based on Nitrogen Mass Balance Model in Narragansett Bay, Rhode Island

    Published on: July 14, 2023