2023-06-22 ミュンヘン大学（LMU）
◆この研究は、Marburg大学とLMUを中心とする研究コンソーシアムによって行われ、衛星データの観測結果に基づいています。アマゾンの谷には頻繁に霧が発生し、気候変動に弱い種の生存を支える重要な役割を果たしています。
＜関連情報＞
- https://www.lmu.de/en/newsroom/news-overview/news/foggy-amazon-valleys-offer-refuge-from-climate-change.html
- https://www.nature.com/articles/s43247-023-00867-6
干ばつリスクの高まりに直面するアマゾン低地林にとって、谷は潜在的な避難場所である Valleys are a potential refuge for the Amazon lowland forest in the face of increased risk of drought
Marius J. Pohl,Lukas W. Lehnert,Boris Thies,Konstantin Seeger,Mónica B. Berdugo,S. Robbert Gradstein,Maaike Y. Bader & Jörg Bendix
Communications Earth & Environment Published:03 June 2023
DOI:https://doi.org/10.1038/s43247-023-00867-6
Abstract
The Amazon rainforest is home to an incredible variety of plant and animal species and plays a crucial role in regulating the Earth’s climate. Climate change and human activities are putting this important ecosystem at risk. In particular, increasing droughts are making it harder for certain organisms to survive. Here we analyse a satellite-based data set of fog/low-stratus (FLS) frequency and a spatio-temporal drought index. We show that vulnerable organisms may find refuge in river valleys where FLS provides a source of moisture. We find that these favourable microclimates exist throughout the Amazon basin, with the highest occurrence and stability in steep river valleys. We suggest that protecting these hygric climate change refugia could help preserve the biodiversity and functioning of the Amazon ecosystem in the face of future droughts. This would also help stabilise atmospheric moisture recycling, making the region more resilient to climate change.
