Marine natural products are a good source of antioxidants due to the presence wide range bioactive compounds. Accumulating evidence proves potential use seaweed-derived ingredients in skincare products. This study aims evaluate ultraviolet (UV) protective activity ethanol and water extracts Padina australis. As preliminary attempt for this discovery, total phenolic content (TPC) flavonoid (TFC)...

Photoinhibition of macroalgae in the epilithic algal community (EAC) of coral reefs was studied using chlorophyll fluorescence techniques at One Tree Island, Great Barrier Reef, Australia. F jFm (variable to maximum fluorescence darkened samples) of shallow macroalgae declined by 50% on fine summer and winte~ days, reco.vering i~ late afternoon. Within a species, thalh from low-hght habItats we...

The Northwestern Hawaiian Islands (NWHI) are considered to be among the most pristine coral reef ecosystems remaining on the planet. These reefs naturally contain a high percent cover of algal functional groups with relatively low coral abundance and exhibit thriving fish communities dominated by top predators. Despite their highly protected status, these reefs are at risk from both direct and ...

Only 12 species of marine algae were known until now from the Desventuradas Archipelago. A recent collection added 10 species yielding a total of six Chlorophyta, nine Phaeophyta, and seven Rhodophyta. Only one species, Padina tristromatica Levring, is endemic. More than half of the representatives are in common with the flora of the Juan Fernandez Archipelago, but only five species are also fo...

An optimization procedure was applied to investigate the anticandidal property of four different Iranian seaweed extract compositions. Response Surface Methodology (RSM) with the four levels- three–factor Box–Behnken design, including Gracilaria arquata concentration (X1), Nizimudidnia zanardini concentration (X2), Cystoceria indica concentration (X3) and Padina australis concentration (X4), wa...

On dynamic coastlines, populations of protected algal species with poor dispersal might be especially vulnerable to infrequent recruitment events and local extinction. As a model, we here consider the alga Padina pavonica from largest remaining physically isolated enclaves on south coast England. A bio-physical model was used investigate likely importance propagule in maintaining populations. D...