将来の海面上昇を追跡するサンゴ礁の成長能力の喪失
Chris T Perry1, Lorenzo Alvarez-Filip2, Nicholas A J Graham3
1Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, UK. c.perry@exeter.ac.uk.
Nature
|June 16, 2018
まとめ
珊瑚礁は海面上昇 (SLR) による沈没に直面しています. ほとんどのサンゴ礁は,特に高排出シナリオでは,予測されたSLRに追いつくための成長の可能性が不足しており,緊急の気候と生態学的対策が必要である.
科学分野:
- 海洋生物学
- 気候科学
- 地質学
背景:
- 海面上昇 (SLR) は,水深と波の露出を増加させ,サンゴ礁を脅かしています.
- SLRに対抗するために必要な 垂直のサンゴ礁の成長を制限します
- 現時点の予測では 地元のサンゴ礁増殖率とSLRの相互作用に関するデータが欠けている.
研究 の 目的:
- 熱帯西大西洋とインド洋の 200以上のサンゴ礁の垂直成長可能性を評価する.
- サンゴ礁の増殖率を,様々な代表的な濃縮経路 (RCP) のシナリオの下での最近の予測SLRと比較する.
- サンゴ礁がSLRを追跡し,沈没を防ぐために必要なサンゴの覆いの値を決定します.
主な方法:
- 200以上のサンゴ礁の 垂直増殖の可能性を計算しました
- 異なるRCPシナリオの観測および予測SLRデータと比較したサンゴ礁の成長率
- SLRに追いつくために 珊瑚の覆面とサンゴ礁の容量との関係を分析しました
主要な成果:
- 現在,多くのサンゴ礁は近年のSLR傾向に近い増殖率を示しています.
- RCP4.5で予測されたSLRを追跡できるサンゴ礁はほとんどありません.
- RCP8.5では,ほとんどのサンゴ礁は2100年までに平均水深が0.5mを超えると予測されています.
- SLRを追跡するには 高いサンゴ層が不可欠ですが ほとんどのサンゴ礁の現在のレベルは不十分です
結論:
- 気候変動,SLR,生態系の悪化を 緊急に緩和することが不可欠です.
- 介入がなければ 2100年までに 大規模なサンゴ礁の沈没が予測されています
- 持続的な生態的回復と 排出量の削減は サンゴ礁の生存に不可欠です
さらに関連する動画
05:58Author Spotlight: Advancing Coral Culture - Creating a Semi-Quantitatively Controlled Microenvironment System to Counter Current Limitations
Published on: July 21, 2023
2.6K
10:39Multimodal Optical Microscopy Methods Reveal Polyp Tissue Morphology and Structure in Caribbean Reef Building Corals
Published on: September 5, 2014
12.9K
関連する概念動画
Lung Capacity
56.4K
The air in the lungs is measured in volumes and capacities. Lung volume measures reflect the amount of air taken in, released, or left over after a lung function, like a single inhalation. Lung capacity measures are sums of two or more lung volume measures.
56.4K
Population Growth
28.7K
Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
28.7K
What is Biodiversity?
33.8K
Biodiversity describes the variety of living things at multiple organizational levels: genetic, species and ecosystem diversity. Species diversity includes all branches of the evolutionary tree from single-celled prokaryotic organisms, bacteria, and archaea, to the eukaryotic kingdoms: plants; animals; fungi; and protists. To date, there have been about 1.75 million species identified, and new species are discovered every week.
33.8K
Line Loss
545
The different configurations of source-load connections include wye (star) and delta connections. The relationship between line and phase voltages and currents varies depending on the configuration. When the source is supplying power, it is transmitted through the wires to the load, and during this transmission, some power is absorbed by the wires, leading to line loss.
Line loss impacts power delivery efficiency in a balanced three-phase circuit. The symmetry in such a circuit simplifies the...
Line loss impacts power delivery efficiency in a balanced three-phase circuit. The symmetry in such a circuit simplifies the...
545
Increasing Function
400
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...
400
Reducing Line Loss
390
In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss in...
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss in...
390
