Tracing species-specific kelp eDNA in marine sediments for blue carbon assessment along the Norwegian Coast
ノルウェー沿岸の海洋堆積物における種特異的海藻eDNA追跡によるブルーカーボン評価 (AI 翻訳)
Marc B. Anglès d’Auriac, Sarah B. Ørberg, Gunhild Borgersen, Hege Gundersen, Sanna Matsson, Marit F. Markussen Bjorbækmo, Philip Francis Thomsen, Dorte Krause‐Jensen, Nathalie Marquesin Risbakk, Kasper Hancke
🤖 gxceed AI 要約
日本語
本研究では、ノルウェー沿岸の海洋堆積物において、2種のケルプ（コンブ）の環境DNAを種特異的に検出するqPCRアッセイを開発し、79地点の表層堆積物サンプルに適用した。その結果、87%の地点でケルプDNAが検出され、堆積物中有機炭素との強い相関が確認された。また、ウニの食害がケルプの炭素貯蔵に影響を与えることも示唆された。本手法はブルーカーボン評価に貢献する。
English
This study developed species-specific qPCR assays for two kelp species (Saccharina latissima and Laminaria hyperborea) to trace their eDNA in marine sediments along the Norwegian coast. Applied to 79 sediment samples, kelp DNA was detected in 87% of locations, with strong correlation to total organic carbon. The method provides a novel framework for assessing blue carbon contributions from kelp forests.
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（例：ブルーカーボンクレジット制度）においても、海藻類の炭素隔離能力の評価手法が求められている。本手法は種特異的DNA解析により、堆積物中の炭素貯蔵量を推定する枠組みを提供し、日本沿岸への応用が期待される。
In the global GX context
This method advances blue carbon quantification by providing a species-specific eDNA approach, complementing traditional carbon accounting methods. It offers a tool to assess the carbon sequestration potential of kelp forests, relevant to global climate mitigation strategies and marine ecosystem management.
👥 読者別の含意
🔬研究者:Researchers in blue carbon and marine ecology can adopt this eDNA method for species-specific carbon stock assessment.
🏢実務担当者:Practitioners in marine conservation and coastal management can use this framework to evaluate kelp forest contributions to carbon budgets.
🏛政策担当者:Policymakers in climate and ocean governance can leverage this method to integrate blue carbon into national greenhouse gas inventories.
📄 Abstract（原文）
Terrestrial primary production is acknowledged as a major contributor to atmospheric carbon transformation and storage. In contrast, marine primary production, especially the contribution from kelp forests, remains less studied and accounted for. To facilitate studies on marine kelp and organic carbon, we here introduce an environmental DNA-based approach for tracing two common kelp species in Nordic marine sediments, establishing a basis for estimating the organic carbon buried from the targeted species. We developed and tested species-specific quantitative PCR (qPCR) assays for Saccharina latissima and Laminaria hyperborea . Next, we applied the assays on 79 marine surface (0–2 cm) sediment samples along the Norwegian coast (58° N to 72° N), ranging from shallow nearshore (8.1 m) to deep offshore locations (1334 m). Kelp DNA was detected in 87% of the locations, with DNA from S. latissima and L. hyperborea detected in 73% and 72% of the locations, respectively. DNA from both species were detected together in 58% of the locations. Spatial analysis revealed higher kelp DNA concentrations in shallow, coastal areas, particularly for S. latissima while kelp DNA was largely absent at the offshore locations. Both species exhibited a strong correlation with the sediment total organic carbon (TOC) concentration. Interestingly, kelp eDNA concentrations and TOC concentrations were lower in areas where kelp forests were impacted by sea urchin grazing compared to non-impacted areas. Our study presents a novel method for tracing key kelp species and provides a framework to estimate their potential contributions to sediment carbon pools and assessing kelp carbon sequestration. This framework has the potential to improve assessment of blue carbon contributions in sediments and should also be applicable to other organisms beyond kelp.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3389/fmars.2026.1784926first seen 2026-06-27 04:58:20
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