Plankton Diversity in Coastal Waters near Kalu Ganga River Mouth; Sri Lanka
نویسندگان
چکیده
The plankton community plays a significant role in the stability of coastal ecosystems. They serve as key players marine food webs. present study investigated diversity waters near Kalu Ganga river mouth. Six sampling locations were chosen randomly, three along right side coastline (CR1-CR3) and left-side (CL1-CL3) from Zooplankton phytoplankton at each location sampled September 2020 to February 2021 using 55μm net surface on monthly basis. Plankton morphologically identified nearest possible taxonomic level. Shannon-Weiner index (H) Simpson's Index Diversity (SID) calculated determine diversity. number species found during wet months (September-October) dry (January-February) 62 68 respectively, while similar zooplankton (43) recorded both periods. Altogether, 81 53 research period. Bacillariophyta (72%) Copepods (68%) dominant groups respectively. Dinoflagellates including, Peridinium sp., Protoperidinium Ceratium Noctiluca Gonyaulax Alexandrium which are well-known form harmful algal blooms (HABs) accounted for 17%. Chlorophyta Cyanophyta less dominated only (CL1 CR1) Rotifera (11%), foraminifera (9%), protozoa (10%) ichthyoplanktons (<1%) also reported. H SID values be between 2.7 3.1 0.90 0.96 not significantly different (p>0.05) location. According values, area has moderate-high level Further should conducted temporal spatial variation area.
منابع مشابه
Long term coastal erosion and shoreline positions of Sri Lanka
Coastal zone of Sri Lanka is a key to sustainable development of the country. The erosion of country’s coastal zone has been identified as a long standing problem. Therefore, coastal sediment dynamics around the country has to be identified to develop an appropriate coastal zone management plan. Remote sensing and GIS techniques can be used for quantitative and qualitative analyses of coastal p...
متن کاملlong term coastal erosion and shoreline positions of sri lanka
coastal zone of sri lanka is a key to sustainable development of the country. the erosion of country’s coastal zone has been identified as a long standing problem. therefore, coastal sediment dynamics around the country has to be identified to develop an appropriate coastal zone management plan. remote sensing and gis techniques can be used for quantitative and qualitative analyses of coastal p...
متن کاملSri Lanka
Sri Lanka is a country with an approximate area of 66 thousand square kilometers (UNO, 2008). The population is 20,409,946 and the sex ratio (men per hundred women) is 98 (UNO, 2009). The proportion of the population under the age of 18 years is 28% and the proportion above age 60 is 8% (UNO, 2009). The literacy rate is 97% for men and 99% for women (UN Statistics, 2008). The life expectancy at...
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ژورنال
عنوان ژورنال: KDU journal of multidisciplinary studies
سال: 2022
ISSN: ['2579-2245', '2579-2229']
DOI: https://doi.org/10.4038/kjms.v4i2.47