Presentation Information
[OECfne_2-04]A Seagrass EOV and –Enabled Coastal Biodiversity Digital Twin
*Takehisa Yamakita1 (1. JAMSTEC/APMBON (Japan))
Under GOOS/MBON, “Seagrass cover and composition” has recently been finalized as a BioEco Essential Ocean Variable (EOV), with percentage cover, species composition, and areal extent defined as core subvariables. In Japan, long-term monitoring is conducted across six regions under the Monitoring Sites 1000 program; however, its spatial coverage remains insufficient. Satellite remote sensing can help address this gap by enabling broad-scale mapping of ecosystem extent. Nevertheless, detecting and interpreting rapid, localized changes—such as the regional loss of seagrass meadows within a single year reported by Yamakita et al. (2016)—still require in situ verification.
We propose a high-throughput DT-BIO FLOW that integrates satellite and aerial imagery, field-based vegetation and community surveys, eDNA, fixed cameras, and citizen-science observations, including BIOME. Beyond mapping ecosystem extent, frameworks such as TNFD require assessments of ecosystem condition, species extinction risk, population dynamics, and ecosystem function. Meeting these requirements calls for high-resolution predictions of habitat suitability and responses to climate change and alternative nature futures. Because condition-, function-, and species-level assessments are often constrained by the availability of in situ observations, we emphasize the importance of distributed observation networks involving fishers, coastal managers, and citizen scientists, supported by robust quality-assurance procedures and tangible benefits for participants.
Data will be harmonized into Darwin Core–compliant Event, Occurrence, and Extended Measurement or Fact (EMoF) tables and published through OBIS to support standardization, quality control, provenance tracking, and reuse. We identify key infrastructure challenges, including the integration of heterogeneous data streams, iterative model updating, and uncertainty assessment. We also examine progress and challenges associated with Japan’s pioneering blue-carbon credit schemes, including JBlueCredit®, and ocean-health index that capture co-benefits—such as biodiversity, fisheries, and water purification—beyond carbon sequestration alone. Finally, we discuss the framework’s potential to support evaluation of marine protected areas, Nature Positive outcomes at OECM sites, TNFD-related reporting, and adaptive fisheries and coastal management, while identifying bottlenecks to operational implementation.
We propose a high-throughput DT-BIO FLOW that integrates satellite and aerial imagery, field-based vegetation and community surveys, eDNA, fixed cameras, and citizen-science observations, including BIOME. Beyond mapping ecosystem extent, frameworks such as TNFD require assessments of ecosystem condition, species extinction risk, population dynamics, and ecosystem function. Meeting these requirements calls for high-resolution predictions of habitat suitability and responses to climate change and alternative nature futures. Because condition-, function-, and species-level assessments are often constrained by the availability of in situ observations, we emphasize the importance of distributed observation networks involving fishers, coastal managers, and citizen scientists, supported by robust quality-assurance procedures and tangible benefits for participants.
Data will be harmonized into Darwin Core–compliant Event, Occurrence, and Extended Measurement or Fact (EMoF) tables and published through OBIS to support standardization, quality control, provenance tracking, and reuse. We identify key infrastructure challenges, including the integration of heterogeneous data streams, iterative model updating, and uncertainty assessment. We also examine progress and challenges associated with Japan’s pioneering blue-carbon credit schemes, including JBlueCredit®, and ocean-health index that capture co-benefits—such as biodiversity, fisheries, and water purification—beyond carbon sequestration alone. Finally, we discuss the framework’s potential to support evaluation of marine protected areas, Nature Positive outcomes at OECM sites, TNFD-related reporting, and adaptive fisheries and coastal management, while identifying bottlenecks to operational implementation.
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