# Title of Dataset: ETIB-T: An Equilibrium Theory of Island Biogeography for plant traits Julian Schrader, Ian J. Wright, Holger Kreft, Patrick Weigelt, Samuel C. Andrew, Ian Abbott, Mark Westoby Correspondence to: Julian Schrader (jschrader@posteo.de) ## Description of the Data and file structure SI2 Column name Explanation species Species names island ID for each island. Some islands are named. Numbers follow island IDs in Abbott and Black 1980. reference Reference of species surveys used (for details see below). a First sampling period: 1956-59 b Second sampling period: 1975-77 c Third sampling period: 1978-84 d Fourth sampling period: 1995-98 plant_height Maximum plant height (in log(m)) seed_mass Seed mass (in log(mg)) leaf_area Leaf area (in log(mm2)) References: Marchant_Abbott_1981 Marchant, N. G., & Abbott, I. (1981). Historical and recent observations of the flora of Garden Island, Western Australia. Western Australian Herbarium Research Notes, 5, 49–62. Abbott_Black_1980 Abbott, Ian, & Black, R. (1980). Changes in species composition of floras on islets near Perth, Western Australia. Journal of Biogeography, 7(4), 399. https://doi.org/10.2307/2844658 Rippey_et-al_2003 Rippey, E., Hislop, M. C., & Dodd, J. (2003). Reassessment of the vascular flora of Rottnest Island. Journal of the Royal Society of Western Australia, 86(1), 7–13. Abbott_et-al_2000 Abbott, I., Marchant, N., & Cranfield, R. (2000). Long-term change in the floristic composition and vegetation structure of Carnac Island, Western Australia. Journal of Biogeography, 27(2), 333–346. https://doi.org/10.1046/j.1365-2699.2000.00409.x Rippey_et-al_1998 Rippey, E., Rippey, J., Dunlop, N., Durant, C., Green, B., & Lord, J. (1998). The changing flora of the Shoalwater Bay islands. Western Australian Naturalist, 22(2), 81–104. SI3 Column name Explanation island ID for each island. Some islands are named. Numbers follow island IDs in Abbott and Black 1980. coordinates Island coordinates area Island area (in km2) isolation Island isolaton as distance to nearest mainland in km elevation Mean island elevation in m asl.