気候変動と海洋脊椎動物
William J Sydeman1, Elvira Poloczanska2, Thomas E Reed3
1Farallon Institute for Advanced Ecosystem Research, Petaluma, CA 94952, USA. Bodega Marine Laboratory/University of California Davis, Bodega Bay, CA 94923, USA. wsydeman@faralloninstitute.org.
Science (New York, N.Y.)
|November 14, 2015
まとめ
海洋の脊椎動物は様々なメカニズムで 気候変動に対応し 海洋生態系に影響を及ぼしています 集団の動態を予測するには,代謝,生産性,進化的適応を考慮した統合モデルが必要です.
科学分野:
- 海洋生物学
- 気候変動の生態学
- 保護科学
背景:
- 気候変動は海洋生態系とそのサービスに重大な脅威をもたらしています
- 魚,哺乳類,カメ,海鳥を含む脊椎動物の集団は,変化する海洋条件に多様な反応を示しています.
- これらの反応を理解することは 生態系の構造と機能を予測するのに不可欠です
研究 の 目的:
- 海洋の脊椎動物が気候変化にどう反応しているかを分析し,統合する.
- 生理学的変化や 捕食者と獲物の相互作用の変化を含む これらの反応を駆動する主要なメカニズムを特定する.
- 海洋脊椎動物の適応の可能性を議論し,人口動態を予測する課題を強調する.
主な方法:
- 気候変動に対する海洋魚,哺乳類,カメ,海鳥の反応に関するデータを合成した文献レビュー.
- 異なる分類群と海洋盆地における直接的・間接的な影響の分析
- 肉食動物と獲物のダイナミクスと代謝の影響を含む生理学的および生態学的メカニズムの検討.
主要な成果:
- 海の脊椎動物は,魚の範囲の変化や海鳥の現象学的変化など,気候変動に対して様々な反応を示します.
- 直接的な生理学的効果と,間接的な気候媒介の捕食者-獲物の相互作用の両方が有意である.
- 気候と人口関係における地域的変動は,人口動態の予測を複雑にする.
結論:
- 代謝,生態系の生産性,食物網の相互作用は,海洋脊椎動物への将来の影響を予測する上で極めて重要です.
- 生物種の反応を予測するには 気候,海洋学,生態系,人口モデルを統合する必要があります
- 進化過程をモデルに組み込むことは 気候変動下で海洋脊椎動物を保護する努力を優先させるのに不可欠です
関連する概念動画
01:50Global Climate Change
29.7K
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.
29.7K
01:27Microbes and Climate Change
49
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
49
01:30Marine Microbial Ecology
39
Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...
39
02:56The Fossil Record
28.4K
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
28.4K
01:50Threats to Biodiversity
27.8K
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
27.8K
02:35What is Evolutionary History?
44.7K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
44.7K