Function, Ecology and Evolution of Seed Size in Hakea (Proteaceae)
El-Ahmir, Sh-Hoob Mohamed
Prof. Byron Lamont
Prof. Mark Gibberd
Dr Tianhua He
MetadataShow full item record
Department of Environment and Agriculture
This study investigated function, ecology and evolution of variation in seed size in Hakea (Proteaceae). I first revealed that the evolution of seed size is phylogenetically constrained. Using a series of glasshouse experiments, I further demonstrated that small-seeded Hakea species gain fitness advantage in environment with dry summer through rapid germination, early seedling emergence, and early true leaves emergence; small-seeded Hakea species are also better to tolerate herbivore predation than large-seeded congeners.
Showing items related by title, author, creator and subject.
Groom, Philip (2010)Hakea (Proteaceae) has winged seeds that rely on wind movement for dispersal, with seed dispersal being most effective in a post-fire environment. Seeds from 14 southwestern Australian species (8 fire-killed, 6 resprouters) ...
El-ahmir, S.; Lim, S.L.; Lamont, Byron; He, Tianhua (2015)Seed size is a key functional trait that affects plant fitness at the seedling stage and may vary greatly with species fruit size, growth form and fecundity. Using structural equation modelling (SEM) and correlated trait ...
Bird pollinators, seed storage and cockatoo granivores explain large woody fruits as best seed defense in HakeaLamont, B.; Hanley, M.; Groom, P.; He, Tianhua (2016)Nutrient-impoverished soils with severe summer drought and frequent fire typify many Mediterranean-type regions of the world. Such conditions limit seed production and restrict opportunities for seedling recruitment making ...