Alaria marginata has been the dominant macroalga on this exposed mid-to-low rocky shores along the Big Sur coast of California.

[1] The kelp commonly grows in large patches, which offers habitat and sustenance for tide pool organisms.

[2] In the kelp species Alaria marginata, phenolics act as chemical defence against herbivores.

[4] According to a study done by McConnico and Foster in the Science Direct, thinning of the kelp patches was inversely related to density.

[2] The sorus development was found to be positively related to size and begins as early as March (peaking in late August-October).