Recovery of the brown alga Fucus gardneri following a range of removal intensities

Nitrogen content in the brown alga Fucus gardneri and its relation to light, herbivory and wave exposure

Nitrogen is a necessary element for much of seaweed physiology, and is the most common limiting nutrient for marine macroalgae. Therefore, the content of nitrogen in algal tissue is often considered a useful indicator of algal productivity. However, the significance of algal nitrogen content in the field is understudied. We used a factorial manipulation of light and herbivory at three sites in ...

Temperature-dependent photosynthesis in the intertidal alga Fucus gardneri and sensitivity to ongoing climate change

Isolation of guanosine diphosphate uronic acids from a marine brown alga, Fucus gardneri Silva.

Guanosine diphosphate D-mannuronic acid and guanosine diphosphate L-guluronic acid were isolated from the marine brown alga, Fucus gardneri Silva. These uronic acid nucleotides, reported to occur for the first time in living cells, are considered to be the precursors for the biosynthesis of alginic acid which constitutes about 18% of this alga. A mixture of 3 moles of the two uronic acid nucleo...

Within-alga Integration and Compensation: Effects of Simulated Herbivory on Growth and Reproduction of the Brown Alga, Fucus Vesiculosus

We investigated the level of within-alga integration, the consequent ability to compensate for simulated herbivory, and the effect of nutrient availability on the ability to compensate in Fucus vesiculosus (L.). Although F. vesiculosus lacks vascular connections, resource translocation occurs on a local scale. Vegetative apical parts and reproductive structures were dependent on the resources p...

The role of chemical antifouling defence in the invasion success of Sargassum muticum: A comparison of native and invasive brown algae

Competition and fouling defence are important traits that may facilitate invasions by non-indigenous species. The 'novel weapons hypothesis' (NWH) predicts that the invasive success of exotic species is closely linked to the possession of chemical defence compounds that the recipient community in the new range is not adapted to. In order to assess whether chemical defence traits contribute to i...