Dr. Saroyo, informal family name is Sumarto, is an assosiate professor at Biology Study Program, Faculty of Mathematics and Natural Science, Sam Ratulangi University, Province of North Sulawesi, Indonesia. Dr. Saroyo has interest in subjects of Biodiversity, Conservation Biology and Primatology. Dr. Saroyo teaches in some courses of Biodiversity, Conservation Biology, Primatology and Animal Ecology. Dr. Saroyo is also a members of editors of Jurnal Bioslogos. Some scientific meetings, both nationaly and internationaly, respectively have been attended by Dr. Saroyo. Dr. Saroyo has written some articles in national and international scientific journals and some books has been published, those are Biodiversitas, Biologi Konservasi, Biogeografi, Ekologi Hewan, Biodiversitas Kota Bitung, Climbing Mt. Tangkoko: Conservation Medium and Local Wisdom of Danowudu Community in Preserving Forest as a Water Source in City of Bitung (In: Climate Change Management: Climate Change and Sustainable Use of Water Resources.