Density and Diversity of Rotifers from Shore of a Flood Plain, Balloki Head Works Density & Diversity of Rotifers in Balloki Head Works

The present research work is an investigation of Rotifers from flood plains of Balloki Head Works using diversity indices. Objective: To study the density and diversity of rotifers of flood plain. Methods: collection of rotifers was done from the shore of flood plains from September to July. In total, 15 different species were identified. Rotifers were extracted from soil sample by a customized Baermann Funnel method. A moderate diversity of rotifers was explored by Shannon – Weaver. Simpson index of dominance supported this result. Analysis of variance (ANOVA) showed that there was no significant difference in population density of rotifers among months as the p-value was greater than 5% (α= 0.05). Population density of rotifers was negatively correlated with water temperature and pH whereas a positive correlation was observed with electrical conductivityResults: Overall a moderate diversity was observed. Rotifer density and distribution was under the influence of physico-chemical parameters.

Exploring the Role and Responsibilities of School Principals in Managing Schools in Karachi, Pakistan

This study intended to explore the role and responsibilities of school principals in managing their schools effectively in the context of Karachi, Pakistan. The study aimed at understanding the role and responsibilities of two principals in two diverse schools settings, including one from the public sector school and other from the private sector school. This study helped me understand how school principals practice their roles and responsibilities as school leaders. What challenges they face and how they minimize these challenges? What opportunities are available for them to improve their leadership practices? Within the qualitative research design, the data for this research study was gathered through semi-structured interviews, school observations and document analysis to ensure validity of the data. Furthermore, a thematic analysis approach was used to make sense of the data. The conclusion of the study was derived on the basis of data analysis and interpretations. The study revealed that both school principals performed their duties as administrators in which they inspect the teaching learning practices of the teachers and students. The leadership behaviour of the school principals emphasized more on moral education. Both school principals had firm belief, that apart from providing quality education, it is their primary responsibility to develop moral and social values in teachers and students, which will help them, become productive members of the society. The schools principals were focusing on the vision, mission and goals of the schools and tried to provide effective learning environments to achieve the set goals within limited resources available to them. Moreover, through this research, it was realized that empowering principals to implement change in their schools is more productive. The policy implication is that for empowering principals, in order to get desirable results will complement the school effectiveness.