Distribution of zooplankton community in Toli shad (Tenualosa toli) habitats, Sarawak, Malaysia
Creators: name: Al-Asif, Abdulla
Publisher: name: figshare
Year: 2022
Subjects: subject: 60203 Ecological Physiology
subject: FOS: Biological sciences
subject: 149902 Ecological Economics
subject: FOS: Economics and business
subject: 60411 Population, Ecological and Evolutionary Genetics
subject: 50199 Ecological Applications not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 50101 Ecological Impacts of Climate Change
subject: 60202 Community Ecology (excl. Invasive Species Ecology)
subject: 50104 Landscape Ecology
subject: 60205 Marine and Estuarine Ecology (incl. Marine Ichthyology)
subject: Ecology
subject: 60204 Freshwater Ecology
subject: 60299 Ecology not elsewhere classified
subject: 60207 Population Ecology
subject: 50103 Invasive Species Ecology
subject: 60806 Animal Physiological Ecology
subject: 50206 Environmental Monitoring
subject: Environmental Science
subject: 160507 Environment Policy
subject: FOS: Political science
subject: 50204 Environmental Impact Assessment
subject: Marine Biology

description: Distribution of zooplankton community in Toli shad (Tenualosa toli) habitats, Sarawak, Malaysia. Biodiversitas 21: 4022-4033. The river ecosystems of Sarawak has been identified as important-spawning ground for economically important Toli shad (Tenualosa toli) fisheries. In these river ecosystems, zooplankton serves as a secondary producer to the different types of fish larvae including Toli shad. The productivity and biomass of zooplankton are important factors to control the production of higher trophic level organisms like fish larvae and fishes in different stages including T. toli larvae. In this viewpoint, the composition and abundance of zooplankton were investigated at 5 (five) sampling stations (considered to be spawning and nursing areas of Toli shad) at Batang Lupar and Batang Sadong estuaries from July 2016 to June 2017. A total of 29 zooplankton taxa were recorded that belong to 14 major groups comprised of Copepoda (Arthropoda), Crustacean nauplii (Arthropoda), Fish larvae (Chordata), Mollusca (Mollusca), Luciferidae (Arthropoda), Cnidaria (Cnidaria), Ostracoda (Arthropoda), Cirripedia (Arthropoda), Polychaete larvae (Annelida), Chaetognatha (Chaetognatha), Appendicularia (Chordata), Amphipoda (Arthropoda), Echinodermata larvae (Echinodermata) and Cladoceran (Arthropoda). Copepod was dominant group of zooplankton (82.40-94.41%) at all stations, contributing 477.37-25921.89 ind/m3 and 88.38% of total abundance. The second highest was crustacean larvae (2.45-9.38%) in all stations, contributing 0-2391.7 ind/m3 and 5.88% of total abundance. Zooplankton abundance was higher at downstream station 1 (8460.72 ind/m³) followed by station 2 (5479.80 indi/m³), station 3 (4571.95 ind/m³), station 4 (4394.20 ind/m³) and upstream station 5 (4156.73 ind/m³). Canonical Correspondence Analysis showed that the abundance of copepods was highly influenced by total turbidity and nitrate in the riverine and estuarine ecosystems. Abundance of zooplankton was relatively higher (9549.31 ind/m³) during the post-monsoon and lower (3534.56 ind/m³) during the southwest monsoon.