Biogeography, by definition, encompasses the geographical distribution of animals and plants on the spatial and temporal scales by incorporation of data from a wide array of disciplines. This very interdisciplinary nature of the branch expands its ambits to the fields like environment, ecology, anthropology, physiography and so on. The Eastern Himalayas and its foothills sanctuarize diverse life forms embedded in its acclivitous landscape, shaping the environment, ethnicity and economy of the region. The myriad diversity of the region has been luring researchers and enthusiasts into manifold analyses and interpretations. The book Trends in Biogeography tries to encapsulate the work of authors from the disciplines of biology and geography capturing the essence of the biogeography of the Eastern Himalayas and adjoining regions. Original research and review articles have been divided into four sections namely Biodiversity, Ethnicity and Populations, Agro-diversity and Environment and land use patterns. Diverse topics related to floral and faunal diversity, agriculture, medicinal plants and ethnomedicine, wildlife conservation, population dynamics, land use land cover in the context of the North Bengal region have been compiled in the articles. A holistic approach has been adopted so that the readers are acquainted with the current trends of research, interest and concern related to the biogeography of the Eastern Himalayas and adjoining areas. About the Authors: Dr. Kishore Kumar Thapa completed M.Sc. (University Medalist) in Botany, Ph.D. (Ag), has been teaching in the Department of Botany, Dinhata College since 2008 and also serving as the Coordinator of Department of Botany, Cooch Behar Panchanan Barma University since 2020. Prior to this he served Lecturer (Kalimpong College), Senior Programme Officer WWF-India and also FRLHT (GEF-UNDP), Senior Scientific Officer CDRS (DGHC). He has published several scientific papers in national and international journals, book chapters and proceedings. He has widely travelled in Germany, UK, Nepal, Bhutan, Australia, China and Korea in connection with international congresses and collaborative projects. His fields of interest include Plant Genetic Resources, Plant Tissue Culture and Ethnobiology. He is a Fellow of Society of Ethnobiologists (FES). Dr. Bappa Sarkar Assistant Professor of Geography at Dinhata College, Cooch Behar, has completed his graduation from Cooch Behar in 2007 and secured 1st class 1st in Geography. He completed his master degree (2009) from Department of Geography and Applied Geography, NBU with 1st class 2nd. He was awarded National Scholarship for his academic excellence. He has completed his Ph.D from North Bengal University, 2018. He has participated various professional training of RS and GIS from NRSC, Hyderabad and IIRS, Dehradun. He has participated in many National and International Seminar and Published 9 articles in National and International Journal/ Edited volume (till December 2021). His area of interest includes Cartography, RS & GIS and Agricultural Geography. Sri Manjil Gupta is an Assistant Professor of Zoology at Dinhata College, Cooch Behar, West Bengal. He completed M.Sc in Zoology from University of North Bengal in 2008. He has more than 11 years of teaching experience at the undergraduate level. Sri. Gupta is currently pursuing Ph.D at Cooch Behar Panchanan Barma University. His research interests include therapeutic uses of plant products, parasitology, immunology and biodiversity.