沿岸堆積物における大型藻類炭素埋没の全球分布
The global distribution of macroalgal carbon burial in coastal sediments (原題)
Dongyang Fan, Carlos M. Duarte, Faming Wang, Óscar Serrano, Dabo Guan, Junyu He, Xiaojing Hua, Yingjie Zhu, Zhangqi Zuo, Karen Filbee‐Dexter, Chuancheng Fu, Marianne Holmer, Thomas Wernberg, Ik Kyo Chung, Hatim Albasri, Lei Chen, Yang Liu, Tao Tang, Simai Wang, Xufeng Guo +1
🤖 gxceed AI 要約
日本語
大型藻類は海洋炭素循環に重要だが、沿岸での炭素埋没の空間分布は未解明だった。本研究は高解像度の全球評価を提供し、堆積環境が埋没を制御することを発見。好適な沈み込みは海岸線の1%未満で、朝鮮湾やオホーツク・サハリン地域に集中する。海洋保護区は低埋没域を優先しており、ホットスポットの保護が不足している。
English
Macroalgae are important for ocean carbon cycling, but the spatial distribution of their coastal carbon burial is poorly known. This study provides a high-resolution global assessment, finding that depositional environment controls burial, with favorable sinks rare (<1% of coastlines) and concentrated in regions like Korea Bay and Okhotsk-Sakhalin. Marine protected areas cover low-burial areas more than hotspots, indicating a conservation mismatch.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は周囲を海に囲まれ、藻場はブルーカーボン生態系として注目されている。本研究成果は、日本の沿岸域における炭素貯留ポテンシャルの評価や、ブルーカーボンクレジットの創出に向けた基礎データとして活用できる可能性がある。
In the global GX context
This study provides a global map of macroalgal carbon burial, which is relevant for blue carbon initiatives and national greenhouse gas inventories. It highlights the importance of depositional environments and identifies conservation gaps, offering a basis for integrating macroalgal carbon into climate mitigation strategies.
👥 読者別の含意
🔬研究者:Provides a high-resolution global dataset and identifies predictors of macroalgal carbon burial, useful for blue carbon research.
🏢実務担当者:May inform coastal management and blue carbon project siting, but direct business application is limited.
🏛政策担当者:Highlights the need to protect macroalgal carbon hotspots, which are underrepresented in marine protected areas.
📄 Abstract（原文）
Abstract Macroalgae play a pivotal role in the global ocean carbon cycle, yet the spatial distribution of their coastal carbon burial, a long-term sink relevant to national inventories, remains poorly resolved. Here, we present a high-resolution (5-arcminute, ~9.2 km at the equator) global assessment of the Macroalgal Carbon Burial Index (MCBI), a measure of how favorable coastal environments are for burying macroalgal carbon. Synthesizing the most comprehensive dataset of sediment accumulation rates ( n = 1617), we identify the depositional environment as a critical constraint on burial, acting independently of macroalgal productivity. High-favorability sinks are geographically rare (<1% of global coastlines), clustering in regions such as the Korea Bay and Okhotsk-Sakhalin region. We further identify coastline complexity as an informative predictor of MCBI (R² = 0.59), enabling low-cost identification of burial hotspots. Notably, we identify a mismatch in conservation: existing marine protected areas cover 23.9% of low-burial coastlines but only 17.1% of primary burial hotspots. Our findings map the global pattern of macroalgal carbon burial and provide a spatially explicit basis for its integration into conservation and management.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1038/s41467-026-77215-7first seen 2026-09-02 04:55:54
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