Native-invasive seed-light competition trials

PurposeTo explore the importance of interactions, light limitations, and density in annual plant species in the San Joaquin Desert.DatesTrials from October to December 2018 under controlled, high-light conditions in greenhouse at York University.Meta-datapot labellabel on the potcensuscensus numbercalendar dateDD/MM/YYrepreplicatedensity plantednumber of seeds of native species (Plantago insularis, Phacelia tanacetifolia, and Salvia columbariae planted in the pot (additive study/with replacement)light treatment factorLight as a factor at 2 levels: ambient light or shaded (to replicate shrub canopy) conditions brome treatment factorExotic brome density as a factor at 2 levels: low Bromus madritensis (density of 5 per pot) and high Bromus madritensis (density of 10 per pot)bromeThe number of germinated individuals of Bromus madritensis in the potmorphometric metrics list mean values per pot per speciesbiomass for each species after drying for 48hrs at 67Flight measured between noon and 1pm using a Licor LI-250A light meter with a LI-190R quantum sensor in µmol of photons m-2 s-1.