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Detailed Ecological Assessment Report 2008 – Keenjhar Lake Golden brown algae were also found during the survey with a total number of 38 species collected belonging to 17 genera of phyla Bacillariophyta. The species of class Bacillariophyceae are a source of primary food for aquatic fauna including fish, but they cannot be digested easily due to their slica wall and striae, therefore it is easy to record from gut contents of the fish. However, some species of genus Gyrosigma, Nitzschia, Epithemia indicate for pollution/polluted water. The species of genus Cladophora, Coleochaete, Oedogonium, spirogyra, Zygnema and Ulothrix are food producers for aquatic fauna and fish. The species of Spirogyra are used as fodder for cattle. These genera are easily identified with the naked eye. Cladophora are included in multi-cellular algae. The species of Chara are excellent food producers for aquatic life and is a good indicator for alkaline water. When the pH is higher than 7.2, the genus Chara, once reaching maturity releases an odor which kills mosquitoes. The presence of Chara indicates 100% chances of fish availability; this genus absorbs calcium carbonate. At the time of collection a layer / small particles found layer/small particles attached with Chara. Chara produce crops still more than 17 species were recorded from different places through out the country. It is also multicellular algae/taxa and easily identified with eyes. 3.6.4 Threat and recomendatios No threats or recomndations were given for this study exept for that the need for the community to be educated about the importance of phytoplankton as an integral part of the food chain. Care must be taken during fishing season to maintain the flora and fauna of the sea. 3.7 Zooplankton 3.7.1 Sampling locations Maps 8 and 9 show the sampling points for aquatic and terrestrial invertebrates from Keenjhar Lake. Map 8 – sampling points for aquatic invertebrates Map 9 – sampling points for terrestrial invertebrates WWF Pakistan – Indus for All Programme Page 76 of 165
Detailed Ecological Assessment Report 2008 – Keenjhar Lake 3.7.2 Species account During the summer survey of 2007 the Lake and its adjoining areas were explored for the micro-invertebrate sampling at various sampling sites. Some of the same as well as many more sites were visited during the winter same year and adequate sampling was done and observations recorded regarding the terrestrial and aquatic invertebrate fauna of the reservoir and its adjoining areas. Table 21 and 22 gives detailed of the aquatic invertebrates collected from Keenjhar Lake. Table 21 - Data of aquatic invertebrates collected from Keenjhar Lake S. No. Invertebrate groups - Aquatic 1 Decapoda N 24 55’ 297’’, E0 68 04’ 390’’ N 24 56’ 961’’, E 068 04’ 949’’ N 25 00’ 706’’, E 068 06 855’’ 2 Copepoda Table 22 – Data of terrestrial invertebrates collected from Keenjhar Lake S. No. Locality (Coordinates) Date Invertebrate groups - terrestrial 1 Araneae 2 Solifugae 3 Chilopoda Locality (Coordinates) Date N 25 01’ 266’’, E 068 06’ 983’’ N 24 59’ 734’, E 068 05’ 980’’ N 25 02’ 497’’, E 068 07’ 694’’ N 25 02’ 335’’, E068 08’ 103’’ N 25 01’ 258’’, E 068 05’ 557’’ N 25 01’ 526’’, E 068 06’ 221’’ Khapri area N 25 01’ 439’’ E 68º 08′ 362″ N 25 01’ 444’’ E 68º 08′ 356″ N 24º 55′ 404″, E 68º 00′ 239″ Hanif Shah area N 24º 54′ 375″, E 68º 01′ 898 N 24º 52′ 154″, E 68º 02′ 645 N 24º 55′ 303″, E 68º 02′ 234″ Daulatpur N 24º 55′ 085, E 68º 00′ 844’’ N 24º 55’ 173″, E 68º 59′ 848″ N 24º 54′ 347″, E 68º 01′ 809 16-06-07 19-06-07 14-10-07 16-10-07 17-06-07 14-10-07 15-10-07 16-10-07 16-10-07 3 Midge fly larvae N 25 00’ 721’’, E 068 06 815’’ 18-6-07 16-10-07 17-6-07 19-6-07 14-10-07 15-10-07 16-10-07 18-6-07 15-10-07 17-6-07 16-10-07 WWF Pakistan – Indus for All Programme Page 77 of 165
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