Density and Biomass of Seagrass Beds and Its Threats on Lamongan Regency

Citra Satrya Utama Dewi, Defri Yona, Pratama Diffi Samuel, Rizqi Aimmatul Maulidiyah, Ahdiya Syahrir, Yandini Eka Putri, Hilal Rakhmawan, Maulana Fikri

Abstract


This study aims to determine the density of seagrass species, seagrass biomass, and threats faced by seagrass communities in the Coastal District of Lamongan. The study was conducted in August to November 2019 in three coastal villages of Lamongan Regency, namely Tunggul Village (Station 1), Kranji (Station 2), and Banjarwati (Station 3). The stages of the study consisted of: preparation, data collection on density, threat data and seagrass stand samples, sample processing, and data analysis. The results showed that the total density of seagrass species at Stations 1, 2 and 3 was 160 stands / m2; 172 stands / m2; and 185 stands / m2. Furthermore, the total biomass of seagrass at Stations 1, 2 and 3 was 4633 gbk / m2, 2136 gbk / m2, and 9234 gbk / m2. In addition to seagrass species, seagrass density values also affect seagrass biomass. As development progresses in Lamongan Regency, it is known that the biggest threat of seagrass communities in the study site is human activity (anthropogenic), among others: anchor ships when anchored and the use of coastal areas as tourist areas, which often cleans up seagrass communities because they are deemed unfit to be enjoyed tourism sector.

Keywords


Seagrass, Threat, Biomass, Density

Full Text:

PDF

References


Angrelina, I., Sartimbul, A., & Wahyudi, A. J. (2019). The potential of seagrass beds on the coast of Putri Menjangan as a carbon sequestration ecosystem on Bali Island. IOP Conference Series: Earth and Environmental Science, 241, 012010. https://doi.org/10.1088/1755-1315/241/1/012010

Azkab, M. H. (1999). Pedoman Inventarisasi Lamun. Oseana, XXIV, 1–16.

Charpy-Roubaud, C., & Sournia, A. (1990). The comparative estimation of phytoplanktonic, microphytobenthic and macrophytobenthic primary production in the oceans’. 27.

Den Hartog, C., Kuo, J., Larkum, A. W., Duarte, C. M., & Orth, R. J. (2006). Seagrasses: Biology, Ecology and Conservation. Springer.

Dewi, C. S. U., Anggraeni, F., Yusuf, M., Shidqi, M., Subhan, B., & Arafat, D. (2012). Seagrass Diversity in Banten Bay, The Province of Banten. Jurnal Teknologi Perikanan Dan Kelautan, 3(1), 29–34.

Dewi, C. S. U., Subhan, B., & Arafat, D. (2017). Keragaman, Kerapatan, dan Penutupan Lamun di Pulau Biak, Papua. DEPIK Jurnal Ilmu-Ilmu Perairan, Pesisir, Dan Perikanan, 6(2), 122–127.

Dewi, C. S. U., Sukandar, Mr., Subhan, B., & Arafat, D. (2018). Distribusi Habitat Pakan Dugong dan Ancamannya di Pulau-Pulau Kecil Indonesia. JFMR-Journal of Fisheries and Marine Research, 2(2), 128–136.

Duarte, C. M. (1990). Seagrass Nutrient Content (Vol. 67).

Duarte, Carlos M, & Chiscano, C. L. (1999). Seagrass biomass and production: A reassessment. Aquatic Botany, 65(1–4), 159–174. https://doi.org/10.1016/S0304-3770(99)00038-8

Howard, J., Hoyt, S., Isensee, K., Emily, P., & Maciej, T. (2014). Coastal Blue Carbon: Methods for assessing carbon stocks and emissions factors in mangroves, tidal salt marshes, and seagrass meadows. Conservation International, Intergovernmental Oceanographic Commission of UNESCO, International Union for Conservation of Nature.

Laffoley, D. D., & Grimsditch, G. D. (2009). The management of natural coastal carbon sinks. IUCN.

Lawrence, A. (2012). Blue Carbon: A New Concept for Reducing The Impacts of Climate Change by Conserving Coastal Ecosystem in The Coral Triangle. Queensland.

Uyigue, E., Ediang, O. A., & Ediang, A. A. (2010). Combating Climate Change: The Role of Renewable Energy and Energy Efficiency. 2010.

Wahyudi, A. J. (2018). Menyerap Karbon (Layanan Ekosistem Pesisir untuk Mitigasi Perubahan Iklim). UGM Press.

Wahyudi, J. (2019). Emisi Gas Rumah Kaca (GRK) Dari Pembakaran Terbuka Sampah Rumah Tangga Menggunakan Model IPCC. Jurnal Litbang, 15(1), 65–76.

Waycott, M., Mcmahoon, K., Mellors, J., Calladine, A., & Kleine, D. (2004). A Guide Tropical Seagrasses Of The Indo-West Pacific. James Cook University.




DOI: https://doi.org/10.21776/ub.rjls.2020.007.03.9

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.