<span style="font-family:Verdana;">Kota Kinabalu Wetland is important</span><span style="font-family:Verdana;">ly</span><span style="font-family:Verdana;"> h...<span style="font-family:Verdana;">Kota Kinabalu Wetland is important</span><span style="font-family:Verdana;">ly</span><span style="font-family:Verdana;"> habited of mangrove, diverse aquatic flora and fauna as well as feeding stop for migratory birds. This wetland is inundated with the tidal flow, as connected with a small river and nearby coastal areas, thus. A study was carried out to determine the spatial distribution of dissolved inorganic nutrients and phytoplankton diversity at Kota Kinabalu (KK) Wetlands. Five stations, </span><span style="font-family:Verdana;">in </span><span style="font-family:""><span style="font-family:Verdana;">which river mouth of Likas Bay, river channel (two stations) and inundated area (two stations) in KK Wetland were selected for this study. </span><i><span style="font-family:Verdana;">In-situ</span></i><span style="font-family:Verdana;"> parameters of water, water for nutrients and phytoplankton samples were collected from May 2019 until October 2019. The highest concentration of nitrate (0.115 mg/L) was recorded at inundated area of wetland (S5) while the lowest nitrate concentration (0.0047 mg/L) was found at river (S3) flowing towards wetland. The concentrations of ammonia (0.2004 to 2.311 mg/L) were recorded relatively higher at every station compared to other dissolved inorganic nutrients (DIN). The concentration of phosphate was determined in the ranges of 0.0089 </span></span><span style="font-family:Verdana;">-</span><span style="font-family:""><span style="font-family:Verdana;"> 0.0513 mg/L. Nitrate, ammonia and phosphate showed no significant difference (</span><i><span style="font-family:Verdana;">P </span></i><span style="font-family:Verdana;">= 0.737) in terms </span></span><span style="font-family:Verdana;">of </span><span style="font-family:""><span style="font-family:Verdana;">DIN concentration at all five sampling stations during the study period. Twenty-four genera of phytoplankton were identified, dominated by diatoms (55.29%), followed by dinoflagellates (24.95%), Chrysophyta (11.15%), Spirotrichea (5.28%) and Cyanophyta (3.33%). Dominating species throughout the study period include </span><i><span style="font-family:Verdana;">Chaetoceros </span></i><span style="font-family:Verdana;">sp., </span><i><span style="font-family:Verdana;">Pseduo-nitzschia </span></i><span style="font-family:Verdana;">sp., and </span><i><span style="font-family:Verdana;">Cylindrotheca closterium, Peridinium quinquecorne and Alexandrium sp. </span></i><span style="font-family:Verdana;">Phytoplankton species composition</span></span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> w</span><span style="font-family:Verdana;">ere</span><span style="font-family:Verdana;"> observed the highest in river mouth area in July with the highest density of 12.115</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">× 10</span><sup><span style="font-family:Verdana;">4</span></sup><span style="font-family:Verdana;"> cells/</span></span><span style="font-family:Verdana;">mL</span><span style="font-family:""><span style="font-family:Verdana;">. The study showed that nutrient concentration was insignificant (</span><i><span style="font-family:Verdana;">P </span></i><span style="font-family:Verdana;">= 0.614) in altering the phytoplankton density, as influences with the tidal water.</span></span>展开更多
文摘<span style="font-family:Verdana;">Kota Kinabalu Wetland is important</span><span style="font-family:Verdana;">ly</span><span style="font-family:Verdana;"> habited of mangrove, diverse aquatic flora and fauna as well as feeding stop for migratory birds. This wetland is inundated with the tidal flow, as connected with a small river and nearby coastal areas, thus. A study was carried out to determine the spatial distribution of dissolved inorganic nutrients and phytoplankton diversity at Kota Kinabalu (KK) Wetlands. Five stations, </span><span style="font-family:Verdana;">in </span><span style="font-family:""><span style="font-family:Verdana;">which river mouth of Likas Bay, river channel (two stations) and inundated area (two stations) in KK Wetland were selected for this study. </span><i><span style="font-family:Verdana;">In-situ</span></i><span style="font-family:Verdana;"> parameters of water, water for nutrients and phytoplankton samples were collected from May 2019 until October 2019. The highest concentration of nitrate (0.115 mg/L) was recorded at inundated area of wetland (S5) while the lowest nitrate concentration (0.0047 mg/L) was found at river (S3) flowing towards wetland. The concentrations of ammonia (0.2004 to 2.311 mg/L) were recorded relatively higher at every station compared to other dissolved inorganic nutrients (DIN). The concentration of phosphate was determined in the ranges of 0.0089 </span></span><span style="font-family:Verdana;">-</span><span style="font-family:""><span style="font-family:Verdana;"> 0.0513 mg/L. Nitrate, ammonia and phosphate showed no significant difference (</span><i><span style="font-family:Verdana;">P </span></i><span style="font-family:Verdana;">= 0.737) in terms </span></span><span style="font-family:Verdana;">of </span><span style="font-family:""><span style="font-family:Verdana;">DIN concentration at all five sampling stations during the study period. Twenty-four genera of phytoplankton were identified, dominated by diatoms (55.29%), followed by dinoflagellates (24.95%), Chrysophyta (11.15%), Spirotrichea (5.28%) and Cyanophyta (3.33%). Dominating species throughout the study period include </span><i><span style="font-family:Verdana;">Chaetoceros </span></i><span style="font-family:Verdana;">sp., </span><i><span style="font-family:Verdana;">Pseduo-nitzschia </span></i><span style="font-family:Verdana;">sp., and </span><i><span style="font-family:Verdana;">Cylindrotheca closterium, Peridinium quinquecorne and Alexandrium sp. </span></i><span style="font-family:Verdana;">Phytoplankton species composition</span></span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> w</span><span style="font-family:Verdana;">ere</span><span style="font-family:Verdana;"> observed the highest in river mouth area in July with the highest density of 12.115</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">× 10</span><sup><span style="font-family:Verdana;">4</span></sup><span style="font-family:Verdana;"> cells/</span></span><span style="font-family:Verdana;">mL</span><span style="font-family:""><span style="font-family:Verdana;">. The study showed that nutrient concentration was insignificant (</span><i><span style="font-family:Verdana;">P </span></i><span style="font-family:Verdana;">= 0.614) in altering the phytoplankton density, as influences with the tidal water.</span></span>