KaydedilenlerDerginizi ekleyin

Dergiler / Mediterranean Fisheries and Aquaculture Research / 2026 / Cilt: 9 Sayı: 1

An Operational Conservation Prioritization Model for Seagrass Ecosystems in the Eastern Mediterranean: National Posidonia oceanica Priority Index (NPOI)

Ergün Taşkın(MANİSA CELÂL BAYAR ÜNİVERSİTESİ)0000-0003-0531-4546
Aysu Güreşen(MANİSA CELÂL BAYAR ÜNİVERSİTESİ)0000-0001-9919-1545
Furkan Bilgiç(MANİSA CELÂL BAYAR ÜNİVERSİTESİ)0009-0007-6922-0684
Sayfa
26–39
Yayın Tarihi
2026-06-30
🏛️Bu makalenin bibliyografik verileri ve tam metin bağlantısı DergiPark üzerinden sağlanmıştır.
DergiPark Kaydı ↗
✨

Yapay Zeka Hızlı Bakış & Çıkarımlar

AI Insight
⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Application to three Eastern Mediterranean meadows yielded NPOI values ranging from 2.05 to 2.46 (mean ± SD: 2.19 ± 0.23), consistently classifying all sites as restoration-priority systems.

📌 3 Maddede Bu Makale

🎯
Amaç & Hipotez:Posidonia oceanica meadows represent one of the most valuable coastal ecosystems in the Mediterranean Sea due to their biodiversity support, sediment stabilization, and long-term carbon sequestration capacity.
📊
Temel Bulgular & Veri:The index integrates four equally weighted components: (A) spatial continuity and area, (Y) temporal persistence derived from lepidochronological age structure, (C) carbon lock-in potential based on matte thickness, and (P) anthropogenic pressure.
💡
Sonuç & Katkı:Application to three Eastern Mediterranean meadows yielded NPOI values ranging from 2.05 to 2.46 (mean ± SD: 2.19 ± 0.23), consistently classifying all sites as restoration-priority systems.
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:National Posidonia oceanica Priority Index · conservation · seagrass ecosystems

Özet

Posidonia oceanica meadows represent one of the most valuable coastal ecosystems in the Mediterranean Sea due to their biodiversity support, sediment stabilization, and long-term carbon sequestration capacity. However, conservation planning often relies on present-day ecological status indicators without incorporating temporal persistence and carbon lock-in potential, which are fundamental to long-term ecosystem resilience. This study introduces the National Posidonia oceanica Priority Index (NPOI), a standardized and operational decision-support model developed for Eastern Mediterranean coastal management. The index integrates four equally weighted components: (A) spatial continuity and area, (Y) temporal persistence derived from lepidochronological age structure, (C) carbon lock-in potential based on matte thickness, and (P) anthropogenic pressure. Anthropogenic pressure is quantified through a six-component weighted model reflecting mechanistic impact pathways. Each component is scored on a 1–5 scale using transparent and repeatable criteria. The index does not assess legal protection eligibility, as all Posidonia oceanica meadows are protected habitats; rather, it quantifies conservation priority and restoration urgency. The methodological framework, scoring protocols, and management interpretation are presented in detail to ensure reproducibility and policy applicability. Application to three Eastern Mediterranean meadows yielded NPOI values ranging from 2.05 to 2.46 (mean ± SD: 2.19 ± 0.23), consistently classifying all sites as restoration-priority systems.

Abstract

Posidonia oceanica meadows represent one of the most valuable coastal ecosystems in the Mediterranean Sea due to their biodiversity support, sediment stabilization, and long-term carbon sequestration capacity. However, conservation planning often relies on present-day ecological status indicators without incorporating temporal persistence and carbon lock-in potential, which are fundamental to long-term ecosystem resilience. This study introduces the National Posidonia oceanica Priority Index (NPOI), a standardized and operational decision-support model developed for Eastern Mediterranean coastal management. The index integrates four equally weighted components: (A) spatial continuity and area, (Y) temporal persistence derived from lepidochronological age structure, (C) carbon lock-in potential based on matte thickness, and (P) anthropogenic pressure. Anthropogenic pressure is quantified through a six-component weighted model reflecting mechanistic impact pathways. Each component is scored on a 1–5 scale using transparent and repeatable criteria. The index does not assess legal protection eligibility, as all Posidonia oceanica meadows are protected habitats; rather, it quantifies conservation priority and restoration urgency. The methodological framework, scoring protocols, and management interpretation are presented in detail to ensure reproducibility and policy applicability. Application to three Eastern Mediterranean meadows yielded NPOI values ranging from 2.05 to 2.46 (mean ± SD: 2.19 ± 0.23), consistently classifying all sites as restoration-priority systems.

🔖

Bu Makaleye Atıf Yap

Taşkın, E., Güreşen, A., Bilgiç, F. (2026). An Operational Conservation Prioritization Model for Seagrass Ecosystems in the Eastern Mediterranean: National Posidonia oceanica Priority Index (NPOI). Mediterranean Fisheries and Aquaculture Research, Cilt: 9 Sayı: 1, 26–39. https://doi.org/10.63039/medfar.1922630

📄 Tam Metin PDF Okuyucu

📄

PDF görüntüleyici hazırlanıyor...

Kaynakça (27)

  1. Blanco-Murillo, F., Fernández-Torquemada, Y., Garrote-Moreno, A., A. Sáez. C., Sánchez-Lizaso, J.L. (2022) Posidonia oceanica L. (Delile) meadows regression: Long-term affection may be induced by multiple impacts. Marine Environmental Research,174: 1-8.
  2. Boudouresque, C.F., Bernard, G., Bonhomme, P., Charbonnel, E., Diviacco, G. et al. (2012) Protection and conservation of Posidonia oceanica meadows. RAMOGE and RAC/SPA Publisher, Tunis, 1-202.
  3. Boudouresque, C.F., Bernard, G., Pergent, G., Shili, A., Verlaque, M. (2009) Regression of Mediterranean seagrasses caused by natural processes and anthropogenic disturbances and stress: a critical review. Botanica Marina, 52: 395-418. https://doi.org/10.1515/ BOT.2009.057
  4. Boudouresque, C.F., Bernard, G., Bonhomme, P., Charbonnel, E., Diviacco, G. et al. (2006) Preservation et Conservation des Herbiers a Posidonia oceanica. RaMoGe publication, Monaco, pp. 200.
  5. Bonacorsi, M., Pergent-Martini, C., Breand, N., Pergent, G. (2013) Is Posidonia oceanica regression a general feature in the Mediterranean Sea? Mediterranean Marine Science, 14: 193– 203. https://doi.org/10.12681/mms.334
  6. Coll, M., Piroddi, C., Albouy Ben Rais Lasram, F., Cheung, W.W.L. et al. (2012) The Mediterranean Sea under siege: spatial overlap between marine biodiversity, cumulative threats and marine reserves. Global Ecology and Biogeography, 21(4): 465-480. https://doi.org/10.1111/j.1466-8238.2011.00697.x
  7. Fahrig, L., (2003) Effects of habitat fragmentation on biodiversity. Annual Review of Ecology Evolution and Systematics 34: 487–515.
  8. Giakoumi, S., Sini, M., Gerovasileiou, V., Mazor, T., Beher, J. et al. (2013) Ecoregion-based conservation planning in the Mediterranean: Dealing with Large-scale heterogeneity. PloS One, 8 (10): e76449. https://doi.org/10.1371/journal.pone.0076449
  9. Duarte, C.M. (2005) Substantial role of marine vegetation on the oceanic carbon cycle. Biogeosciences, 2:1–8. https://doi.org/10.5194/bg-2-1-2005
  10. Duarte, C.M., Losada, I.J., Hendriks, I.E., Mazarrasa, I., Marbà, N. (2013) The role of coastal plant communities for climate change mitigation and adaptation. Nature Climate Change, 3: 961–968.
  11. Fourqurean, J.W., Duarte, C.M., Kennedy, H., Marba, N., Holmer, M., et al. (2012) Seagrass ecosystems as a globally significant carbon stock. Nature Geoscience, 5: 505–509.
  12. Halpern, B.S., Frazier, M., Potapenko, J., Casey, K.S., Koenig, K. et al. (2015) Spatial and temporal changes in cumulative human impacts on the world’s ocean. Nature Communications, 6 (1): 7615. https:// doi.org/10.1038/ncomms8615
  13. Hendriks, I.E., Marbà, N., Duarte, C.M., Krause-Jensen, D. (2022) Mediterranean seagrasses as carbon sinks: methodological and regional differences. Biogeosciences, 19: 4619–4636. https://doi.org/10.5194/bg-19-4619-2022
  14. Mateo, M.A., Romero, J., Pérez, M., Littler, M.M., Littler, D.S. (1997) Dynamics of millenary organic deposits resulting from the growth of the Mediterranean seagrass Posidonia oceanica. Estuarine, Coastal and Shelf Science, 44: 103–110.
  15. Montefalcone, M., Parravicini, V., Vacchi, M., Albertelli, G., Ferrari, M., et al., (2010) Human influence on seagrass habitat fragmentation in NW Mediterranean Sea. Estuarine, Coastal and Shelf Science, 86: 292–298
  16. Orth, R.J., Carruthers, T.J.B., Dennison, W.C., Duarte, C.M., Fourqurean, J.W., Heck, K.L., Hughes, A.R., Kendrick, G.A., Kenworthy, W.J., Olyarnik, S., Short, F.T., Waycott, M., Williams, S.L. (2006) A global crisis for seagrass ecosystems. BioScience, 56 (12): 987–996.
  17. Pergent, G. (1990) Lepidochronological analyses of the seagrass Posidonia oceanica (L.) Delile: a standardized approach. Aquat. Bot., 37: 39–54.
  18. Pergent-Martini, C., Leoni, V., Pasqualini, V., Ardizzone, G.D., et al. (2005) Descriptors of Posidonia oceanica meadows: Use and application. Ecological Indicators, 5: 213–230.
  19. Pergent-Martini, C., Pergent, G., Monnier, B., Boudouresque, C.F., Mori, C., Valette-Sansevin, A. (2021) Contribution of Posidonia oceanica meadows in the context of climate change mitigation in the Mediterranean Sea. Marine Environmental Research, 165: 105236. https://doi.org/10.1016/j.marenvres.2020.105236
  20. Personnic, S., Boudouresque, C-F., Astruch, P., Ballesteros, E., Blouet, S., et al. (2014) An Ecosystem-Based Approach to Assess the Status of a Mediterranean Ecosystem, the Posidonia oceanica Seagrass Meadow. PLoS ONE 9(6): e98994.
  21. Serrano, O., Mateo, M.A., Renom, P., Julià, R. (2012) Characterization of soils beneath a Posidonia oceanica meadow. Geoderma, 185–186: 26–36.
  22. Taşkın, E., Tan, İ., Çakır, M., Sungur, Ö., Minareci, O., et al. (2023) Ecological quality status of the Turkish coastal waters by using a marine macrophytic biotic index (EEI-c). Turkish Journal of Botany 47 (1): 34-49. https://doi.org/10.55730/1300-008X.2742
  23. Taşkın, E., Bilgiç, F., Güreşen, A. (2024) Implementation of a new Non-destructive Phytobenthic Index (NPI) with the Posidonia Biotic Index (BiPo) to evaluate the ecological status of the Turkish Aegean coasts (Eastern Mediterranean). Turkish Journal of Botany, 48(6): 296-307. https://doi.org/10.55730/1300-008X.2818
  24. Taşkın, E., Bilgiç, F., Güreşen, A. (2025) Evaluation of the Ecological Dynamics of the Seagrass Posidonia oceanica in a Turkish Mediterranean Site Considering the Plant Growth. MedFAR., 8(1): 49-62. https://doi.org/10.63039/medfar.1708155
  25. Telesca, L., Belluscio, A., Criscoli, A., Ardizzone, G., Apostolaki, E.T., et al. (2015) Seagrass meadows (Posidonia oceanica) distribution and trajectories of change. Scientific Reports, 5 (12505): 1-14.
  26. Waycott, M., Duarte, C.M., Carruthers, T.J.B., Orth, R.J., Dennison, W.C., Olyarnik, S., Calladine, A., Fourqurean, J.W., Heck, K.L., Hughes, A.R., Kendrick, G.A., Kenworthy, W.J., Short, F.T., Williams, S.L. (2009) Accelerating loss of seagrasses across the globe threatens coastal ecosystems. Proceedings of the National Academy of Sciences of the United States of America, 106 (30): 12377–12381. https://doi.org/10.1073/pnas.0905620106
  27. Wesselmann, M., Anton, A., Duarte, C.M., Hendriks, I.E., Marbà, N., Krause-Jensen, D., Apostolaki, E.T. (2021) Seagrass (Halophila stipulacea) invasion enhances carbon sequestration in the Mediterranean Sea. Global Change Biology, 27 (12): 2592–2607. https://doi.org/10.1111/gcb.15521