TY - RPRT TI - Directional selection limits ecological diversification and promotes ecological tinkering during the competition for substitutable resources AU - Good, B. H. AU - Martis, S. AU - Hallatschek, O. PY - 2018 DO - 10.1101/292821 UR - https://www.biorxiv.org/content/10.1101/292821v1 ID - 10.1101/292821 ER -