International Journal of Fauna and Biological Studies
2015, Vol. 2 Issue 4, Part A
Spatial and temporal variations in the community structure of meiobenthos in the mangrove area near the Karachi coast, Pakistan
Naureen Aziz Qureshi, Farah Naz, Noor US Saher
Spatial and temporal variations in relation to environmental and biological parameters was carried out from three stations in Sands pit backwater along the coast of Karachi, Pakistan from January 1999 to December 1999. Various meiofauna taxa were identified from the sample procured during low tide. The total mean densities of meiofaunal were (30.42 Â±6.81) and (3628 Â± 5958) individuals per10 cm2 in 500 Âµm and 63 Âµm size fractions respectively. Total densities were lowest during post monsoon (5890 Â± 6145) and southwest monsoon periods (4844 Â± 8399) and highest during (21247 Â±16660) northeast monsoon period in 63 Âµm fraction. In 500 Âµm size fraction lowest densities were observed during post monsoon (7.96 Â± 5.67) and highest during southwest monsoon periods (8.73 Â±7510), there were significant differences between stations (F 2, 35 = 8.45, P<0.05) and seasons (F 2, 35 = 6.84, P<0.05) for meiofauna collected in 63 Âµm fraction. Nematodes contributed up to 88% of the total biomass followed by harpacticoid copepods, polychaetes, ostracods, turbellarians, and other meiofaunal taxa. The result of Bray-Curtis similarity measures, examining total meiofauna, and all ancillary environmental parameters (a biotic, biotic) and sediment properties were shown in four major clusters includes mollusks density, salinity water and pore, pH water and pore. A second cluster composed of root density, Eh water and pore, 500 Âµm fraction, percent moisture content, Porosity, standard deviation phi and kurtosis.
Pages: 23-29 | 1309 Views 162 Downloads
Naureen Aziz Qureshi, Farah Naz, Noor US Saher. Spatial and temporal variations in the community structure of meiobenthos in the mangrove area near the Karachi coast, Pakistan. Int. J. Fauna Biol. Stud. 2015;2(4):23-29.