Ecological Study of Aquatic Vegetation in the Pananualeng Beach Area, Sangihe Islands Regency

Yeni Indriani; Magdalin Ulaan; Numisye I Mose; Yessi A.P Manganang; Jetti T Saselah

doi:10.55927/ijaea.v5i2.16797

Authors

Yeni Indriani Politeknik Negeri Nusa Utara
Magdalin Ulaan Politeknik Negeri Nusa Utara
Numisye I Mose Politeknik Negeri Nusa Utara
Yessi A.P Manganang Politeknik Negeri Nusa Utara
Jetti T Saselah Politeknik Negeri Nusa Utara

DOI:

https://doi.org/10.55927/ijaea.v5i2.16797

Keywords:

Aquatic Vegetation, Seagrass, Water Quality, Pananualeng Beach, Sangihe Islands

Abstract

This study examined the ecological condition of aquatic vegetation in Pananualeng Beach, Sangihe Islands Regency, North Sulawesi, focusing on seagrass species composition, community dominance, and supporting water quality as key ecological indicators. Field observations were conducted in October 2025 at three purposively selected sampling stations using line-transect quadrats for seagrass assessment and in-situ measurement of temperature, salinity, dissolved oxygen, pH, and nutrients. The results showed that Thalassia hemprichii dominated the seagrass community, followed by Enhalus acoroides, indicating suitable habitat conditions and relatively stable aquatic vegetation. Water quality values were within acceptable seawater quality ranges, with no detected nitrate, nitrite, or ammonia. These findings indicate low anthropogenic pressure and support sustainable tourism management and seagrass conservation.

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References

Alongi, D. M., Murdiyarso, D., Fourqurean, J. W., Kauffman, J. B., Hutahaean, A., Crooks, S., Lovelock, C. E., Howard, J., Herr, D., Fortes, M., Pidgeon, E., & Wagey, T. (2016). Indonesia’s blue carbon: a globally significant and vulnerable sink for seagrass and mangrove carbon. Wetlands Ecology and Management, 24(1), 3–13. https://doi.org/10.1007/s11273-015-9446-y

Fazio, F., Piccione, G., Tribulato, K., Ferrantelli, V., Giangrosso, G., Arfuso, F., & Faggio, C. (2014). Bioaccumulation of heavy metals in blood and tissue of striped mullet in two Italian lakes. Journal of Aquatic Animal Health, 26(4), 278–284. https://doi.org/10.1080/08997659.2014.938872

Feld, C., Saeedghalati, M., & Hering, D. (2020). A framework to diagnose the causes of river ecosystem deterioration using biological symptoms. Journal of Applied Ecology, 57, 2271–2284. https://doi.org/10.1111/1365-2664.13733

Hu, Z., Lei, J., Liu, C., & Nepf, H. (2018). Wake structure and sediment deposition behind models of submerged vegetation with and without flexible leaves. In Advances in Water Resources (Vol. 118). https://doi.org/10.1016/j.advwatres.2018.06.001

Indriani, Y., Saselah, J. T., Ulaan, M., Manganang, Y. A. P., & Mose, N. I. (2025). Ecological study of Chanos chanos (milkfish) habitat and environmental parameters in coastal waters of Sangihe Islands Regency. Journal of Marine and Fisheries Science, 12(1), 45–58. https://doi.org/10.55241/spibio.v6i1.416

Kamarrudin, Z., Rondonuwu, S., & Maabuat, P. (2015). Keragaman Lamun (Seagrass) di Pesisir Desa Lihunu Pulau Bangka Kecamatan Likupang Kabupaten Minahasa Utara, Sulawesi Utara. Jurnal MIPA, 4, 20. https://doi.org/10.35799/jm.5.1.2016.11194

Makawowode, M., Kimbal, M., & Sampe, S. (2017). Implementation of the Pananualeng Beach tourism object program in the Sangihe Islands Regency. Jurnal Eksekutif, 1(1). https://ejournal.unsrat.ac.id/v3/index.php/jurnaleksekutif/article/view/16335

Nugraha, A. H., Tasabaramo, I. A., Hernawan, U. E., Rahmawati, S., Putra, R. D., & Darus, R. F. (2021). Diversity, coverage, distribution and ecosystem services of seagrass in three small islands of northern Papua, Indonesia: Liki island, Meossu island and Befondi island. Biodiversitas, 22(12), 5544–5549. https://doi.org/10.13057/biodiv/d221238

Omollo, D. J., Wang’ondu, V. W., Githaiga, M. N., Gorman, D., & Kairo, J. G. (2022). The contribution of subtidal seagrass meadows to the total carbon stocks of Gazi Bay, Kenya. Diversity, 14(7), 573. https://doi.org/10.3390/d14080646

Patnaik, R., Singh, N. K., Bagchi, S. K., Rao, P. S., & Mallick, N. (2019). Utilization of Scenedesmus obliquus Protein as a Replacement of the Commercially Available Fish Meal Under an Algal Refinery Approach. Frontiers in Microbiology, 10(September), 1–15. https://doi.org/10.3389/fmicb.2019.02114

Putra, D., Rahman, A., & Dharmaji, D. (2023). Analysis of water quality in the Riam Kanan sub-watershed, Banjar Regency, South Kalimantan Province. Aquatic, 6(2), 1–221. https://doi.org/10.20527/aquatic.v6i2.2815

Sondak, C. F. A., & Kaligis, E. Y. (2022). Assessing the seagrasses meadows status and condition: A case study of Wori Seagrass Meadows, North Sulawesi, Indonesia. Biodiversitas, 23(4), 2156–2166. https://doi.org/10.13057/biodiv/d230451

Xue, X., Yun, L., Sun, Z., Zan, J., Xu, X., Liu, X., Gao, S., Wang, G., Liu, M., & Si, F. (2025). Community Structure and Influencing Factors of Macro-Benthos in Bottom-Seeded Marine Pastures: A Case Study of Caofeidian, China. Biology, 14(7). https://doi.org/10.3390/biology14070901