Universities worldwide have been conducting e-learning during the COVID-19 pandemic to continue education irrespective of faculties are familiar with e-education or not. This study assessed perception and preference for e-teaching amongst 438 faculty members. Results revealed that around half of teachers were conducting e-classes without any training, and they also had conducted examinations using online platforms. Teachers perceived e-teaching as effective during the pandemic, time-efficient, easy to share materials, unsuitable for monitoring or conducting practical classes and less effective for evaluation. More than three-fourths of the teachers preferred online teaching during the pandemic, and most preferred both physical and mixed teaching in the post-pandemic era. Their preferences were influenced by their age, teaching experience, academic discipline, current residency, training on online teaching, hours of online classes taught per week, internet connection used, types of classes and whether they had given online examinations. The major challenges in online teaching during COVID-19 were difficulty in practical work, difficulty in monitoring students and insufficient feedback. This study suggests online teaching during the pandemic and mixed teaching after the pandemic. Training faculty members on online teaching, designing e-platforms suitable for examinations and ensuring stable internet connections are also recommended for effective and smooth e-education.

Information on plant diversity and community structure are required to chalk out necessary actions for conservation management. The present study assessed the composition and diversity of tree species in Kamalachari Natural Forest of Chittagong South Forest Division, Bangladesh, during April 2010 to November 2011. A total of 107 tree species belonging to 72 genera and 37 families were recorded, where Moraceae family was represented by maximum (11) species. Density, Basal area and volume of tree species were 418±20.09 stem/ha, 21.10±2.62 m 2 /ha and 417.4±79.8 m 3 /ha respectively. Diameter and height class distribution of tree species revealed an almost reverse J-shaped curve. Both the number of species and percentage of tree individuals were maximum in the lower DBH and height ranges. Anthropogenic disturbances like illegal tree cutting, over extraction, settlement inside forest area etc. were noticed during the study, which are supposed to cause gradual decrease of both tree species and individuals in the higher DBH and height classes.However, Artocarpus chama was found dominant showing maximum IVI followed by Schima wallichii, Aporosa wallichii, and Lithocarpus acuminata. The quantitative structure of the tree species of Kamalachari natural forest is comparable to other tree species rich tropical natural forests. The findings of the study may help in monitoring future plant population changes of the identified species and adopting species specific conservation programs in Kamalachari natural forest.

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