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

Relative Frequency Histogram01:14

Relative Frequency Histogram

The relative frequency depicts the proportion of data points that have each value. The frequency tells the number of data points that have each value. Like the histogram, a relative frequency histogram also has the same shape with a horizontal scale (the x-axis), but the vertical scale (the y-axis) is marked with relative frequencies (percentages of the whole) instead of actual frequencies. A relative frequency histogram is a graphical representation of a frequency distribution where the...
Time-Series Graph00:54

Time-Series Graph

A time-series graph is a line graph with repeated measurements taken at successive intervals of time. It is also called a time series chart. To construct a time-series graph, one must look at both pieces of a paired data set. The horizontal axis is used to plot the time increments, and the vertical axis is used to plot the values of the variable that one is measuring. By using the axes in this way, each point on the graph will correspond to time and a measured quantity. The points on the graph...
Interpreting Run Charts01:25

Interpreting Run Charts

Run charts, essentially line graphs plotted over time, serve as fundamental yet effective tools for process analysis. They chronicle data sequentially, facilitating the identification of trends, shifts, or cyclical movements. This graphical representation is instrumental in determining whether a process is stable or exhibits signs of potential instability indicative of special cause variation. In the healthcare domain, run charts depict infection rates over time, enabling hospitals to monitor...
Red Algae01:23

Red Algae

Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
Deep Sea Microbial Ecology01:18

Deep Sea Microbial Ecology

The deep ocean and its underlying sediments represent vast, largely unexplored microbial habitats that extend far beyond the sunlit photic zone. The photic (euphotic) zone typically spans the upper ~100–200 meters of pelagic waters in the open ocean, but its depth varies geographically and seasonally, where sufficient light supports photosynthetic life. Below this lies the deep sea, spanning roughly 1000–6000 meters (bathypelagic to abyssal zones), with deeper hadal trenches extending beyond...
Increasing Function01:18

Increasing Function

An increasing function exhibits a rise in output values as input values increase. This behavior is depicted graphically as a curve or line that slopes upward from left to right. Such a function satisfies the condition that if x1 < x2, then f(x1) < f(x2), indicating that the function values grow with increasing inputs. This concept is fundamental in understanding growth trends across various domains, such as population dynamics, financial investments, or resource consumption.The average...

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

Increasing pressure on freshwater resources due to terrestrial feed ingredients for aquaculture production.

The Science of the total environment·2015
Same author

Experimental evolution gone wild.

Journal of the Royal Society, Interface·2015
Same author

Diurnal changes in seawater carbonate chemistry speciation at increasing atmospheric carbon dioxide.

Marine biology·2014
Same author

Cellular pH measurements in Emiliania huxleyi reveal pronounced membrane proton permeability.

The New phytologist·2011
Same author

The societal challenge of ocean acidification.

Marine pollution bulletin·2010
Same author

Enhanced biological carbon consumption in a high CO2 ocean.

Nature·2007

関連する実験動画

Updated: Jul 6, 2026

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

深海のタイムトレンド レッドフィールド比率

M Pahlow1, U Riebesell

  • 1Alfred Wegener Institute for Polar and Marine Research, Post Office Box 120161, D-27515 Bremerhaven, Germany. mpahlow@awi-bremerhaven.de

Science (New York, N.Y.)
|February 5, 2000
PubMed
まとめ

海洋の炭素循環は変化しています. 深海の粒子流量比 (炭素:窒素:リン) は時間的な傾向を示し,生物学的炭素ポンプが安定状態ではないことを示しています.

科学分野:

  • マリン・バイオジオケミストリー
  • 海洋学 海洋学 海洋学
  • 気候科学 気候科学

背景:

  • レッドフィールド比 (炭素:窒素:リン) は,海洋生物地球化学の循環と炭素の結合に不可欠です.
  • この比率は,現代の海洋では通常一定であると仮定されていますが,最近のデータはそうではないことを示唆しています.

研究 の 目的:

  • 北半球における深水レッドフィールド比の過去50年間の時間的傾向を調査する.
  • これらの傾向が海洋の炭素循環と吸収に及ぼす影響を理解する.

主な方法:

  • 北大西洋と北太平洋の深水粒子流量データの分析.
  • レッドフィールド比の変化と,大気堆積や海洋学的な条件などの潜在的な要因との相関関係.

主要な成果:

  • 北大西洋では窒素:リン比率が上昇しており,これは人類による酸化窒素排出量と関連している可能性がある.
  • 北太平洋は,炭素:窒素,炭素:リンの比率が増加しており,再鉱化率の上昇と輸出生産の強化に関連しています.
  • エオール鉄の生物利用性の向上は,北太平洋の炭素輸出の増加を促している可能性があります.

結論:

さらに関連する動画

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information
10:28

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information

Published on: June 13, 2020

Reefshape: A System for the Efficient Collection and Automated Processing of Time-Series Underwater Photogrammetry Data for Benthic Habitat Monitoring
13:35

Reefshape: A System for the Efficient Collection and Automated Processing of Time-Series Underwater Photogrammetry Data for Benthic Habitat Monitoring

Published on: June 13, 2025

関連する実験動画

Last Updated: Jul 6, 2026

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information
10:28

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information

Published on: June 13, 2020

Reefshape: A System for the Efficient Collection and Automated Processing of Time-Series Underwater Photogrammetry Data for Benthic Habitat Monitoring
13:35

Reefshape: A System for the Efficient Collection and Automated Processing of Time-Series Underwater Photogrammetry Data for Benthic Habitat Monitoring

Published on: June 13, 2025

  • 北半球における深水レッドフィールド比率は恒定ではなく,重要な時間的な傾向を示している.
  • これらの変化は,生物学的炭素ポンプが現在安定状態ではないことを示唆しています.
  • この発見は,海洋の炭素収縮と,人類による影響へのその反応を理解するための意味を持つ.