The effects of increased densities of settled propagules and the presence of adults on survlval of recruits were lnvest~gated to determine whether patterns of propagule settlement would pel slst and be expressed as distribution of recruits for Sargassum spln~l l lgeru~n S d ~ s t l c h u n ~ and S podacanthum in a subtidal mixed specles bed at Rottnest Island, Western Australia The effect of hi...

Dispersal of propagules from fertile thalli of Sargassum spinuligerum was measured in situ using a novel technique. Propagules were stained with Toluidine Blue while still attached to parent thalli. After 24 h, the density of settled propagules was determined at different distances from the stained thalli with a venturi suction sampler Previous measurements of propagule or spore dispersal have ...

Phototrophs underpin most ecosystem processes, but to do this they need sufficient light. This critical resource, however, is compromised along many marine shores by increased loads of sediments and nutrients from degraded inland habitats. Increased attenuation of total irradiance within coastal water columns due to turbidity is known to reduce species' depth limits and affect the taxonomic str...

Long-standing theory predicts that the intensity of consumer-prey interactions declines with increasing latitude, yet for plant-herbivore interactions, latitudinal changes in herbivory rates and plant palatability have received variable support. The topic is of growing interest given that lower-latitude species are moving poleward at an accelerating rate due to climate change, and predicting lo...