• Evaluating seed banking capacity and propagation potential of endangered Sierra Bermeja grasses: Aristida chaseae and Aristida portoricensis

      Maschinski, Joyce; Possley, Jennifer; Lange, James; Monsegur Rivera, Omar A.; Heineman, Katherine D. (2018)
      Of the 2329 plant species that are native to Puerto Rico, 188 are grasses (Poaceae) and nearly 20% of those are critically imperiled. To address gaps in knowledge of US endangered Aristida chaseae (Chase’s Threeawn) and Aristida portoricensis (Pelos del Diablo) from Sierra Bermeja in southwestern Puerto Rico, we conducted experiments to determine viability of seeds produced in the wild, germination requirements, and ability to be stored under cold, dry conditions.
    • Seed dynamics of an endemic palm in a Northwestern Mexican tropical dry forest: implications for population spatial structure

      López-Toledo, Leonel; Portillo-Cruz, Y.; Pulido, M.T.; Endress, Bryan A. (2013)
      Seed dynamics are an important part of the life history of plants and may have strong implications on abundance and spatial distribution of populations. In this study, we explored how seed dynamics (removal, predation, germination) interact with micro-environmental conditions to affect the spatial structure of populations of Brahea aculeata (Arecaceae) in a tropical dry forest. B. aculeata is distributed throughout arroyo basins and attains its highest densities near to arroyos/rivers....