Biodiversity and Ecosystem Status of Mangroves in the Belawan Estuary, North Sumatra Province, Indonesia
DOI:
https://doi.org/10.32734/jsi.v9i01.19749Keywords:
Avicennia, Belawan Estuary, Diversity, Mangrove, Nypa, ZonationAbstract
Estuaries function as sediment deposition zones that provide essential substrates for mangrove development. Consequently, estuaries and mangroves constitute integral components of coastal ecosystems. The mangrove ecosystem in the Belawan Estuary, North Sumatra Province, is increasingly threatened by rapid urban expansion in Medan City. This study aimed to assess mangrove biodiversity, structural characteristics, and ecological status in the Belawan Estuary. Field surveys were conducted in November 2023 across 28 sampling stations representing seaward, middle, and landward sections of the estuary. Vegetation data were analyzed using density, diversity, evenness, dominance, and Importance Value Index (IVI). A total of 26 mangrove species were recorded, comprising 21 true mangrove species and 5 associated species. The most widely distributed species were Avicennia marina, Avicennia lanata, and Nypa fruticans. Mangrove density ranged from 533 to 2,733 ind ha⁻¹, with an average of 1,420 ind ha⁻¹. Shannon–Wiener diversity values ranged from 0.04 to 1.95, indicating relatively low diversity in several landward stations dominated by N. fruticans. Although the overall condition of mangroves in the Belawan Estuary is classified as good, the ecosystem remains highly vulnerable to land-use conversion under the revised spatial planning framework. Strengthening conservation-oriented spatial policy is therefore essential to ensure long-term ecosystem sustainability.
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References
E. P. Odum and G. W. Barrett, Fundamental of Ecology, 5th ed. Belmont, CA: Brooks/Cole Publishing Co, 2005.
[2] J. W. Nybakken and M. Bertness, Marine biology : an ecological approach, 6th ed. Francisco (US): San Pearson/Benjamin Cummings, 2005.
[3] A. M. Rangkuti, M. R. Cordova, A. Rahmawati, Yulma, and H. E. Adim, Ekosistem pesisir dan laut Indonesia, 1st ed. Jakarta: PT.Bumi Aksara, 2017.
[4] W. Giessen, S. Wulffraat, M. Zieren, and L. Schoelten, A Field Guide of Indonesian Mangrove, 3rd ed. Bogor: Wetlands International - Indonesia Programme, 2012.
[5] M. M. Igulu et al., “Mangrove habitat use by juvenile reef fish: Meta-analysis reveals that tidal regime matters more than biogeographic region,” PLoS One, vol. 9, no. 12, 2014, doi: 10.1371/journal.pone.0114715.
[6] L. Pelage et al., “Importance of estuary morphology for ecological connectivity with their adjacent coast: A case study in Brazilian tropical estuaries,” Estuar. Coast. Shelf Sci., vol. 251, p. 107184, Apr. 2021, doi: 10.1016/j.ecss.2021.107184.
[7] KLHK, Peta Mangrove Nasional tahun 2023. Indonesia: Kementerian Kehutanan dan Lingkungan Hidup, 2024, pp. 1–5.
[8] KLHK, “Peta Mangrove Nasional tahun 2021,” Jakarta, 2021.
[9] A. Muhtadi et al., “Distribution and ecological status of mangroves in the Nias Islands-North Sumatra Province,” AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences, vol. 2, no. 2, pp. 60–72, Nov. 2023, doi: 10.32734/jafs.v2i2.12757.
[10] A. Muhtadi et al., “Status dan sebaran mangrove di kawasan konservasi Taman Pulau Kecil, Kabupaten Tapanuli Tengah, Provinsi Sumatera Utara,” Depik, vol. 9, no. 2, pp. 200–209, Jun. 2020, doi: 10.13170/depik.9.2.15065.
[11] Rahmawaty et al., “Mangrove cover change (2005–2019) in the Northern of Medan City, North Sumatra, Indonesia,” Geocarto Int., vol. 38, no. 1, Dec. 2023, doi: 10.1080/10106049.2023.2228742.
[12] A. S. Thoha, O. A. Lubis O, D. L. N. Hulu, T. Y. Sari, and Z. Mardiyadi, “Utilization of UAV technology for mapping of mangrove ecosystem at Belawan, Medan City, North Sumatera, Indonesia,” in International Conference on Agriculture, Environment and Food Security (AEFS) 2021, Medan: IOP Conference Series: Earth and Environmental Science, Jun. 2022, p. 012102. doi: 10.1088/1755-1315/977/1/012102.
[13] D. G. Bengen, “Pedoman teknis: pengenalan dan pengelolaan ekosistem mangrove,” 2004, PKSPL, Bogor (ID).
[14] Kepmen LH, Kriteria baku dan pedoman penentuan kerusakan mangrove. Indonesia: Kementerian Kehutanan, 2004.
[15] C. J. Krebs, Ecological methodology, 3rd ed. New York: Harper Collins Publisher, 2014.
[16] O. S. Sitompul, Yunasfi, and A. M. Rangkuti, “Kondisi Ekologi Mangrove di Pantai Bali Desa Mesjid Lama Kecamatan Talawi Kabupaten Batu Bara Provinsi Sumatera Utara,” Jurnal Mitra Bahari, vol. 8, no. 2, pp. 15–27, 2014.
[17] M. S. Harefa, Z. Nasution, M. B. Mulya, and A. Makzum, “Mangrove species diversity and carbon stock in silvofishery ponds in Deli Serdang District, North Sumatra, Indonesia,” Biodiversitas, vol. 23, no. 2, pp. 655–662, Jan. 2022, doi: 10.13057/biodiv/d230206.
[18] A. Muhtadi, R. Leidonald, K. Triwibowo, and N. Azmi, “Flora Fauna Biodiversity and CSR Implementation in the Mangrove Ecosystem of Bagan Serdang Village, North Sumatra Province.,” Jurnal Ilmiah Perikanan dan Kelautan, vol. 12, no. 1, pp. 59–72, Mar. 2020, doi: 10.20473/jipk.v12i1.17120.
[19] P. Kasihiw et al., “Mangrove distribution to support biodiversity management in Teluk Bintuni District, West Papua, Indonesia,” Biodiversitas, vol. 25, no. 2, pp. 644–653, Feb. 2024, doi: 10.13057/biodiv/d250223.
[20] A. Muhtadi, R. H. Siregar, R. Leidonald, and Z. A. Harahap, “Status ekologis mangrove Pulau Sembilan, Kabupaten Langkat Provinsi Sumatera Utara (Ecological status of mangrove of Sembilan Island, Langkat Regency, North Sumatra Province),” DEPIK, vol. 5, no. 3, Dec. 2016, doi: 10.13170/depik.5.3.5656.
[21] P. W. Titisari, E. Elfis, I. Chahyana, N. Janna, H. Nurdila, and R. S. Widari, “Management Strategies of Mangrove Biodiversity and the Role of Sustainable Ecotourism in Achieving Development Goals,” J. Trop. Biodivers. Biotechnol., vol. 7, no. 3, p. 72243, Sep. 2022, doi: 10.22146/jtbb.72243.
[22] E. Hilmi, A. S. Siregar, and L. Febryanni, “Struktur Komunitas, Zonasi dan Keanekaragaman Hayati Vegetasi Mangrove di Segara Anakan Cilacap,” Omni-Akuatika, vol. 11, no. 2, pp. 20–32, Nov. 2015, doi: 10.20884/1.oa.2015.11.2.36.
[23] H. Surbakti, I. W. Nurjaya, D. G. Bengen, and T. Prartono, “Temporal variation of freshwater as control of mangrove in Banyuasin Estuary, South Sumatra, Indonesia,” Biodiversitas, vol. 24, no. 3, pp. 1502–1510, Mar. 2023, doi: 10.13057/biodiv/d240320.
[24] A. Muhtadi, F. Yulianda, M. Boer, and M. Krisanti, “Spatial distribution of mangroves in tidal lake ecosystem,” in International Conference on Agriculture, Environment and Food Security (AEFS) 2019, Medan: IOP Conf. Series: Earth and Environmental Science, Apr. 2020, pp. 1–7. doi: 10.1088/1755-1315/454/1/012131.
[25] A. Muhtadi, F. Yulianda, M. Boer, M. Krisanti, A. Rahmadya, and Santos, “Hydrodynamics of tropical tidal lake waters Lake Siombak, Medan, Indonesia,” AACL Bioflux, vol. 13, no. 4, pp. 2014–2031, Aug. 2020, [Online]. Available: http://www.bioflux.com.ro/aacl
[26] J. C. Ellison, “Biogeomorphology of Mangroves,” Coastal Wetlands, pp. 687–715, Jan. 2019, doi: 10.1016/B978-0-444-63893-9.00020-4.
[27] Perda Kota Medan, Rencana Tata Ruang Wilayah Kota Medan Tahun 2022-2042. Medan (ID), Republik Indonesia: Peraturan Daerah Kota Medan, 2022, pp. 1–102.
[28] KLH, “Status Lingkungan Hidup Indonesia Tahun 2012,” Jakarta, 2012.
[29] Perda, Rencana Detail Tata Ruang dan Peraturan Zonasi Kota Medan Tahun 2015-2035. Indonesia: Pemerintahan Kota Medan, 2015.
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