Lagoons

Lagoons of Sri Lanka: from the origins to the present.

2022-10-27T11:04:15Z

Lagoons of Sri Lanka: from the origins to the present. Silva, E. I. L.; Katupotha, J.; Amarasinghe, O.; Manthrithilake, H.; Ariyaratna, R.

Lagoon conservation: Case study of Elephant pass lagoon

2022-07-27T07:18:31Z

Lagoon conservation: Case study of Elephant pass lagoon Rana Alidad; Guganesharajah, K.; Barry Lloyd

Conservation and sustainable use of biodiversity in the islands and lagoons of northern Sri Lanka

2022-07-27T06:34:38Z

Conservation and sustainable use of biodiversity in the islands and lagoons of northern Sri Lanka Weerakoon, D.; Goonatilake, S.; De A.; Wijewickrama, T.; Rajasuriya, A.; Perera, N.; Kumara, T.P.; De Silva, G.; Miththapala, S.; Mallawatantri, A. After the 30-year long civil war was over, the Government of Sri Lanka commenced an accelerated programme to develop the Northern Province. If not carefully planned, such a programme will result in the loss of biodiversity and the consequent loss of services that ecosystems provide humans. Therefore, documenting the biodiversity found within coastal, nearshore and offshore islands of the Northern Province was identified as a need that would help both planners and conservation biologists alike. This report presents the results of a rapid biodiversity assessment of a 949 km stretch from Mannar to the Kokkilai Lagoon, including 22 coastal islands, five coastal stretches and four lagoons, extending across four districts (Jaffna, Mannar, Kilinochchi and Mullaittivu), 20 Divisional Secretariats Divisions and 264 Grama Niladhari Divisions. For terrestrial ecosystems, assessments were carried out during November 2015 and March 2016, and for marine surveys in the coastal waters of Palk Bay and Palk Strait, during

Variations in important water quality parameters and fish species in Thondaimanaru Lagoon, Jaffna, Sri Lanka

2022-05-29T08:17:13Z

Variations in important water quality parameters and fish species in Thondaimanaru Lagoon, Jaffna, Sri Lanka Shobiya, P.; Sivashanthini, K.; Sutharshiny, S.; Saruga, S.; Gunaalan, K. Thondaimanaru lagoon is one of the shallow coastal lagoons in Jaffna peninsula. The current study was conducted to assess the present status of water quality and fish species composition of this lagoon. Water sampling was conducted from July 2016 to December 2016. Nine random samples were collected monthly in order to determine water temperature, pH, salinity, Dissolved Oxygen, Total Dissolved Solids and turbidity. A smarTROLL Multi parameter (Insitu 458389) was used to measure all the parameters except turbidity, which was measured by turbidity meter (2100Q HACH). Random samples of fishes were collected once a month. One-way ANOVA was used to perform statistical analysis. Water temperature, Dissolved Oxygen, salinity, Total Dissolved Solids and turbidity showed significant variations (p < 0.05) whereas pH value did not show a significant difference (p > 0.05) among the months. Chanos chanos, Hemirhamphus sp., Nematalosa nasus, Mugil cephalus, Liza parsia, Oreochromis mossambicus, Arius caelatus and Gerres lucidus were present throughout the study period. Results revealed that the important water quality parameters fluctuated due to seasonal environmental changes where shallow water depth of lagoon, rate of evaporation as well as precipitation had a significant influence on the water quality characteristics.