地球温暖化がサンゴの増殖を阻害する
Terry P Hughes1, James T Kerry2, Andrew H Baird2
1Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia. terry.hughes@jcu.edu.au.
Nature
|April 5, 2019
まとめ
気候変動によるサンゴの白化が グレートバリアリーフに深刻な影響を及ぼし 幼虫の数が89%減少しました この生態学的変化は サンゴ礁の回復を脅かしており 気候対策の緊急性を強調しています
科学分野:
- 海洋生物学
- エコロジー
- 気候変動科学
背景:
- 気候変動は 干渉体制を変化させ 生態系の回復力を脅かし 崩壊のリスクを高めています
- 幼虫の産生と採集は 海洋生物の回復と環境への抵抗力を維持するために 極めて重要です
- グレート・バリア・リーフのような サンゴ礁は 気候変動の影響に特に脆弱です
研究 の 目的:
- グレート・バリア・リーフにおける 珊瑚の採集関係における 地域規模の変化を記録する.
- 大量漂白がサンゴの幼虫増殖に与える影響を評価する.
- 重度の熱ストレスに伴うサンゴ群の組成の変化を特定する.
主な方法:
- 珊瑚の幼虫増殖に関する過去のデータと白化後のデータの分析
- 2016年と2017年の大量漂白事件の前の 採用レベルを比較する
- リクルートプールの支配的なサンゴ分類の特定
主要な成果:
- 2018年にはサンゴの幼生が 過去の水準と比較して 89%減少した.
- 熱ストレスによる成人のサンゴの大量死は2016年から2017年に観察された募集の崩壊につながりました.
- 繁殖するポチロポリドが支配的になり, 枯渇したリクルートプールの繁殖するアクロポリドが置き換えられた.
結論:
- 大サンゴ礁の回復能力が低下していることを示しています 大サンゴ礁の回復能力が低下しています
- 大人のサンゴの回復力や 繁殖能力が損なわれます
- グレートバリアリーフの将来の回復は,極端な気候現象の増加が予測されているため,不確実です.
さらに関連する動画
関連する概念動画
01:50Global Climate Change
28.8K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
28.8K
01:30Introduction to Global Positioning System
507
The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...
507
01:28Global Regulatory Systems
626
Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
626
01:26Errors in Global Positioning System
351
Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
351
01:17Factors Affecting Renal Clearance: Renal Impairment
438
Renal dysfunction significantly impairs the renal clearance of drugs, leading to potential complications in drug therapy. Renal failure, which can be caused by various factors, poses a significant challenge in the elimination of drugs from the body.
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
438
02:20Dynamic Equilibrium
62.1K
A reversible chemical reaction represents a chemical process that proceeds in both forward (left to right) and reverse (right to left) directions. When the rates of the forward and reverse reactions are equal, the concentrations of the reactant and product species remain constant over time and the system is at equilibrium. A special double arrow is used to emphasize the reversible nature of the reaction. The relative concentrations of reactants and products in equilibrium systems vary greatly;...
62.1K