昆布養殖由来の小型懸濁粒子状有機炭素：微生物学的に持続する炭素保持の見落とされた経路
Small Suspended Particulate Organic Carbon from Kelp Farming: A Neglected Pathway for Microbially Persistent Carbon Retention (原題)
Hongmei Li, Xiuting Feng, Shengkang Liang, Jianfu Man, Wei Shao, Shengrong Huang, Zhenwei Yan, Ding He, Yongyu Zhang
🤖 gxceed AI 要約
日本語
海藻養殖は二酸化炭素除去の潜在的手段として注目されるが、成長過程で放出される小型懸濁粒子状有機炭素（sPOC）の運命は未解明だった。中国の昆布養殖海域での観測と培養実験により、sPOCが微生物学的に難分解性の炭素プールに変換され、長期的なブルーカーボン隔離に寄与する可能性を定量的に示した。
English
Seaweed farming is gaining attention for ocean CO2 removal, but the fate of small suspended particulate organic carbon (sPOC) released during growth is poorly understood. Field observations and incubation experiments in a Chinese kelp farming area show that sPOC can be transformed into microbially persistent carbon pools, contributing to long-term blue carbon sequestration.
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
日本は世界有数の昆布養殖国であり、本研究成果は日本のブルーカーボン戦略やJブルークレジット制度の科学的根拠強化に寄与する。また、海藻養殖の炭素隔離効果を算定する際の方法論開発に示唆を与える。
In the global GX context
This study provides empirical evidence for a previously overlooked carbon retention pathway in seaweed farming, which is relevant for global blue carbon accounting frameworks and climate mitigation strategies. It supports the inclusion of macroalgal cultivation in carbon crediting mechanisms and informs policy on ocean-based CO2 removal.
👥 読者別の含意
🔬研究者:Provides a mechanistic understanding of sPOC transformation and persistence, useful for refining blue carbon models and carbon accounting methodologies.
🏢実務担当者:Offers evidence that kelp farming can contribute to long-term carbon sequestration, supporting claims for blue carbon credits and sustainability reporting.
🏛政策担当者:Highlights the need to recognize sPOC pathway in blue carbon policies and carbon credit methodologies, potentially expanding the scope of eligible activities.
📄 Abstract（原文）
Abstract Seaweed farming is increasingly recognized for its potential role in ocean carbon dioxide removal, yet the fate of small suspended particulate organic carbon (sPOC, 0.7–20 μm) released during macroalgal growth remains poorly constrained. Here, we investigated sPOC production, transformation, and microbial persistence in Sanggou Bay, China, one of the world’s most intensive Saccharina japonica cultivation systems. During the farming season, sPOC concentrations increased by 103.4% and 117.0% in surface and bottom waters, respectively, relative to the nonfarming period, accompanied by shifts in sPOC molecular composition toward kelp-derived signatures. In situ mesocosm experiments showed increasing sPOC release with kelp development, reaching 13.4–63.5 μmol L–1 over 64 h across growth stages. The 180-day microbial incubations revealed that 18.1–55.6% of kelp-derived sPOC was retained in three microbially persistent carbon pools: recalcitrant sPOC (R-sPOC; 7.6–27.3%), recalcitrant dissolved organic carbon (4.6–9.7%), and bicarbonate-associated inorganic carbon (5.9–18.6%). Residual R-sPOC exhibited molecular characteristics associated with enhanced microbial resistance, with formula-level evidence of direct kelp release and microbial transformation (48.2% and 51.8%, respectively). These findings identify sPOC as a neglected, mechanistically distinct carbon-retention pathway in seaweed farming and provide a basis for assessing its potential contribution to longer-term blue carbon sequestration.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1021/acs.est.6c07832first seen 2026-09-03 05:15:18
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。