Carbon accumulation in Mediterranean rhodolith beds during the Holocene
Sílvia de Juan, Ryan Smazal, Claudio Lo Iacono, María del Mar Gil, Andrea Cabrito, Andrés Ospina‐Álvarez, Jorge Guillén, Grace M. Cott, Laia Illa-López, Hilmar Hinz, Francesc Maynou
🤖 gxceed AI 要約
日本語
この研究は、地中海のロドリス床における完新世の炭素蓄積を調査した。堆積物の厚さは最大3.7m、有機炭素含有量は平均0.57%、炭素ストックは32.04 Mg C ha⁻¹と推定された。ロドリス床が長期の有機炭素貯蔵庫として機能することを示した。
English
This study investigates carbon accumulation in Mediterranean rhodolith beds during the Holocene. Sediment thickness up to 3.7 m, organic carbon content average 0.57%, estimated carbon stock 32.04 Mg C ha⁻¹. Results show that rhodolith beds act as long-term organic carbon stores.
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
日本のブルーカーボン政策において、海草藻場に加えてロドリス床も炭素貯蔵庫として考慮すべき可能性を示唆する。地中海の事例だが、日本でも類似生態系が存在するため比較研究の基礎となる。
In the global GX context
This paper provides empirical evidence of long-term carbon storage in rhodolith beds, contributing to blue carbon accounting. It underscores the need to include such habitats in national greenhouse gas inventories and climate mitigation strategies.
👥 読者別の含意
🔬研究者:ブルーカーボン研究におけるロドリス床の炭素隔離ポテンシャルの定量的証拠を提供。
🏛政策担当者:海洋保護区設計やブルーカーボン政策へのロドリス床の組み込みを検討する材料。
📄 Abstract（原文）
Abstract. Rhodolith and maërl beds are globally relevant biogenic ecosystems whose long-term carbon storage capacity remains poorly quantified, particularly in the Mediterranean. To fill this gap, we investigated the formation, structure, and carbon content of a sediment deposit underlying a rhodolith bed in the Menorca Channel (Western Mediterranean). High-resolution seismo-acoustic profiling revealed a highly heterogeneous biogenic sedimentary deposit at ∼ 60 m depth, with thickness ranging from a few centimeters to 3.7 m (mean = 0.95 m). Seven cores extracted from the thickest sediment deposits were analyzed for grain size, carbonate content, bioclast composition, organic carbon, and radiocarbon age. Radiocarbon dating indicates that sediment accumulation began during the early Holocene (11 700–9000 yr BP), when post-glacial sea-level rise transitioned the area from subaerial exposure to shallow-marine conditions. Despite the spatial limitation of collected data, several conclusions could be drawn. Early deposits produced during the last sea-level rise were dominated by bivalves and dispersed coralline fragments. The following establishment of modern sea level around 7000–6500 yr BP marks a change to the development of more stable dense rhodolith–maërl facies that persist today. Sediment accretion rates are low (median = 8.54 cm kyr−1), reflecting very low external sediment supply, and slow growth of coralline algae. Organic carbon content in the upper 50 cm, representing the most dynamic and recently deposited carbon pool, averaged 0.57 % (±0.22), with an estimated organic carbon stock of 32.04 (±4.18) Mg C ha−1. These results show that rhodolith beds can act as long-term organic carbon stores, forming spatially complex Holocene deposits that have been largely overlooked.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.5194/bg-23-4779-2026first seen 2026-07-13 06:12:56
🔔 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。