Empirical assessment of species vulnerability for biodiversity conservation: A case study on Chalan beel of Bangladesh.

The study was conducted to assess the current biodiversity in Chalan beel, Natore district, Bangladesh. Primary data were collected through stratified random sampling and analyzed through a combination of descriptive statistical and mathematical techniques. The Shannon-Weiner and Margalef richness indices were used to quantify the biodiversity of birds, and fauna.