International Journal of Ecophysiology (IJOEP) is a peer-reviewed biannual journal (February and July) published by TALENTA Publisher and organized by Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara (USU) as an open-access journal. It welcomes full research articles in the field of Biological Sciences from the following subject area: Anatomy, Comparative anatomy, Histology, Astrobiology, Biochemistry, Biological engineering, Biogeography, Bioinformatics, Biolinguistics, Biomechanics, Biomedical research, Biophysics, Biotechnology, Synthetic biology, Botany, Phycology, Plant physiology, Cell biology, Chronobiology, Cognitive biology, Conservation biology, Cryobiology, Developmental biology, Embryology, Gerontology, Ecology, Evolutionary biology, Genetics, Genomics, Epigenetics, Immunology, Marine biology, Microbiology, Bacteriology, Mycology, Parasitology, Virology, Molecular biology, Nanobiology, Neuroscience, Paleontology, Pathobiology, Pharmacology, Physiology, Phytopathology, Psychobiology, Quantum biology, Systems biology, Structural biology, Theoretical biology, Zoology, Ethology, Entomology, Herpetology, Ichthyology, Mammalogy, and Ornithology. Each publication will contain 10 (ten) manuscripts.