The Department of Integrative Biology is an academic unit whose faculty have teaching and research interests in Behavior, Ecology, Evolution, Population Biology, and Systematics. The department includes 38 faculty who work on a wide diversity of organisms including animals, bacteria, and plants.

The Department of Integrative Biology is housed primarily in two buildings: Patterson Labs and Biological Laboratories. Faculty laboratories in these buildings include state of the art facilities for performing research in behavior, ecology, evolutionary biology, and systematics. A number of Organized Research Units are associated with the section, including the Plant Resources Center (PRC), Center for Computational Biology and Bioinformatics (CCBB), and the Brackenridge Field Laboratory (BFL). The Department also houses a large and diverse collection of museum specimens for use by faculty and students. BFL and its satellite, Stengl Station, provide opportunities for performing field studies very close to the UT campus.

Areas of research in the section include animal behavior, behavioral ecology, biomechanics, community ecology, conservation biology, developmental genetics, empirical and theoretical population genetics, floristics, functional morphology, molecular evolution, neuroendocrinology, plant-animal interactions, phylogenetics, population ecology, quantitative genetics, systematics, and tropical ecology. Detailed research interests of the individual faculty members can be found on the faculty web pages.