Int. J. Fores. Env. | Volume 01, Issue 01, 21-27 | https://doi.org/10.18801/ijfee.010120.03
Article type: Research article | Received: 19.03.20; Revised: 30.03.20; First published online: 15 April 2020.
Article type: Research article | Received: 19.03.20; Revised: 30.03.20; First published online: 15 April 2020.
Floral distribution, abundance and diversity of mangroves in Sangupiddy, Kilinochchi, the northern coast of Sri Lanka
Ahalya Arulnayagam
Department of Marine Bioscience and Environment, Korea Maritime and Ocean University, Busan, South Korea.
✉ Corresponding author: [email protected] (Arulnayagam, A.).
Department of Marine Bioscience and Environment, Korea Maritime and Ocean University, Busan, South Korea.
✉ Corresponding author: [email protected] (Arulnayagam, A.).
Abstract
Sri Lanka, a precious little tropical island in the Indian Ocean harbors a remarkable amount of mangrove habitats scattered along the coastal zone of the country, yet confined to narrow strips since the country has low tidal amplitude. However, most of the researches has given importance to the mangroves of the wet zone of the country. Although neglected, Northern Province shares about 16% of the total mangrove extent of the country. The research aimed to identify the floral distribution of mangroves in Sangupiddy of the Northern Province, Sri Lanka. Mangrove vegetation was surveyed with 5m belt transects laid perpendicular to the shoreline and across the water – land gradient. True mangrove species in each transect were identified and counted. The quantitative data has been used to compute the Shannon diversity index (H), Simpson Index (D) and Shannon Evenness (E), which were used to compare the diversity of the sites, sampled. Two true mangrove species of two families were identified at the site. Highest Shannon diversity index (H = 0.27) and the lowest Simpson index value (D = 0.72) was observed in 2nd transect. Since the place is used for fishing and tourism, pollution and human interaction can degrade the environmental quality of the mangrove habitats. Actions should be taken for conservation of existing patch and replenishment of new mangroves.
Key Words: Mangroves, Diversity, Zonation, Pollution and Replenishment
Sri Lanka, a precious little tropical island in the Indian Ocean harbors a remarkable amount of mangrove habitats scattered along the coastal zone of the country, yet confined to narrow strips since the country has low tidal amplitude. However, most of the researches has given importance to the mangroves of the wet zone of the country. Although neglected, Northern Province shares about 16% of the total mangrove extent of the country. The research aimed to identify the floral distribution of mangroves in Sangupiddy of the Northern Province, Sri Lanka. Mangrove vegetation was surveyed with 5m belt transects laid perpendicular to the shoreline and across the water – land gradient. True mangrove species in each transect were identified and counted. The quantitative data has been used to compute the Shannon diversity index (H), Simpson Index (D) and Shannon Evenness (E), which were used to compare the diversity of the sites, sampled. Two true mangrove species of two families were identified at the site. Highest Shannon diversity index (H = 0.27) and the lowest Simpson index value (D = 0.72) was observed in 2nd transect. Since the place is used for fishing and tourism, pollution and human interaction can degrade the environmental quality of the mangrove habitats. Actions should be taken for conservation of existing patch and replenishment of new mangroves.
Key Words: Mangroves, Diversity, Zonation, Pollution and Replenishment
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Article Citations:
MLA
Arulnayagam, A. “Floral distribution, abundance and diversity of mangroves in Sangupiddy, Kilinochchi, the northern coast of Sri Lanka”. International Journal of Forestry, Ecology and Environment, 01(01) (2020): 21-27.
APA
Arulnayagam, A. (2020). Floral distribution, abundance and diversity of mangroves in Sangupiddy, Kilinochchi, the northern coast of Sri Lanka. International Journal of Forestry, Ecology and Environment, 01(01), 21-27.
Chicago
Arulnayagam, A. (2020). “Floral distribution, abundance and diversity of mangroves in Sangupiddy, Kilinochchi, the northern coast of Sri Lanka”. International Journal of Forestry, Ecology and Environment, 01(01): 21-27.
Harvard
Arulnayagam, A. 2020. Floral distribution, abundance and diversity of mangroves in Sangupiddy, Kilinochchi, the northern coast of Sri Lanka. International Journal of Forestry, Ecology and Environment, 01(01), pp. 21-27.
Vancouver
Arulnayagam, A. Floral distribution, abundance and diversity of mangroves in Sangupiddy, Kilinochchi, the northern coast of Sri Lanka. International Journal of Forestry, Ecology and Environment, 2020 April 01(01): 21-27.
Arulnayagam, A. “Floral distribution, abundance and diversity of mangroves in Sangupiddy, Kilinochchi, the northern coast of Sri Lanka”. International Journal of Forestry, Ecology and Environment, 01(01) (2020): 21-27.
APA
Arulnayagam, A. (2020). Floral distribution, abundance and diversity of mangroves in Sangupiddy, Kilinochchi, the northern coast of Sri Lanka. International Journal of Forestry, Ecology and Environment, 01(01), 21-27.
Chicago
Arulnayagam, A. (2020). “Floral distribution, abundance and diversity of mangroves in Sangupiddy, Kilinochchi, the northern coast of Sri Lanka”. International Journal of Forestry, Ecology and Environment, 01(01): 21-27.
Harvard
Arulnayagam, A. 2020. Floral distribution, abundance and diversity of mangroves in Sangupiddy, Kilinochchi, the northern coast of Sri Lanka. International Journal of Forestry, Ecology and Environment, 01(01), pp. 21-27.
Vancouver
Arulnayagam, A. Floral distribution, abundance and diversity of mangroves in Sangupiddy, Kilinochchi, the northern coast of Sri Lanka. International Journal of Forestry, Ecology and Environment, 2020 April 01(01): 21-27.
References:
- Alongi, D. M. (2012). Carbon sequestration in mangrove forests. Carbon Management, 3(3), 313–322. https://doi.org/10.4155/cmt.12.20
- Amarasinghe, M. D. and Perera, K. A. R. S. (2017). Historical biogeography of Sri Lankan mangroves. Ceylon Journal of Science, 46(5), 111. https://doi.org/10.4038/cjs.v46i5.7458
- Jayatissa, L. P., Dahdouh-Guebas, and Koedam, N. (2002). A review of the floral composition and distribution of mangroves in Sri Lanka. Botanical Journal of the Linnean Society, 138(1), 29–43. https://doi.org/10.1046/j.1095-8339.2002.00002.x
- Karunathilake, K. M. B. C. (2003). Status of Mangroves in Sri Lanka. Journal of Coastal Development, 7(1), 5–9. Retrieved from https://www.omicsonline.com/open-access/status-of-mangroves-in-sri-lanka-1410-5217-7-156.pdf
- Katupotha, K. N. J. (2016). Mangroves in Lagoon Ecosystems: a Neglected Habitat in Sri Lanka. Wildlanka, 4(3), 79–105.
- Prasanna, M. G. M., Ranawana, K. B. and Jayasuriya, K. M. G. G. (2019). Species composition, abundance and diversity of mangroves in selected sites in Amprara District in the east coast of Sri Lanka. Ceylon Journal of Science, 48(2), 169. https://doi.org/10.4038/cjs.v48i2.7621
- Silva, M. De. and Silva, P. K. De. (1998). Status, diversity and conservation of the mangrove forests of Sri Lanka. Journal of South Asian Natural History, 3(1), 79–102.
- Subasinghe, U. (2015). Floral diversity of six mangrove forests along the northwestern coastline of wet, intermediate and dry climate zones of Sri Lanka. Wildlanka, 3(4), 184–194.
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