ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) (p-ISSN: 1907-5626, e-ISSN: 2503-3395, DOI 10.248.43/EJES) or abbreviated EJES, is a publication media for research results, articles and book reviews in the field of environmental science. EJES is a peer-reviewed and open access journal, published twice a year in May and September by the Master Program of Environmental Science, Postgraduate Program of Udayana University, Bali, Indonesia.