As you asking I am telling Sikkim manipal university does not offered M.Sc (Ecology and Environment), but it offered MSc Environmental Science through School of Basic & Applied Sciences detail are as follows :

Eligibility
Graduation in Science (Environmental Science/ Botany/ Zoology / Chemistry / Geology / Physiology / Microbiology / Agriculture).

Other courses offered
B.Sc in Information Technology
BS - Engineering

M.Sc in Information Technology
MPhil - Mathematics
MSc Chemistry
MSc Environmental Science
MSc Mathematics
MSc Physics
MTech in Information Technology
MTech in Material Science & Nanotechnology
MTech in Process Control and Instrumentation
MTech in Production Engineering
MTech in Structural Engineering
MTech in VLSI Design & Embedded Systems
PG Diploma – Geo Informatics

Contact info:
Sikkim Manipal University
Admissions Chairman (Technical Campus),Sikkim Manipal Institute of Technology, Majitar, Rangpo, East Sikkim-737136
03592246020
admission.smit@smu.edu.in