NIOZ press release: North Sea seaweeds: DIP and DIN uptake kinetics and management strategies | Alexander Lubsch

On Friday the 24th of May, Alexander Lubsch will defend his thesis  on North Sea seaweeds.

Nutrient uptake kinetics and internal storage capacities of dissolved inorganic phosphate (DIP) and dissolved inorganic nitrate (DIN) were quantified for 4 North Sea seaweed species, Ulva lactuca, Saccharina latissima, Laminaria digitata, Palmaria palmata. All seaweed species tested showed a biphasic response in uptake rates: surge uptake as a response to nutrient-starvation and maintenance uptake after internal nutrient pools had been filled. In absolute numbers, all seaweed species had different uptake rates and internal storage capacities for DIP and DIN. These differences were translated into different physiological consequences, from growth characteristics to internal composition related to DIP and DIN availability. Some species were well equipped to withstand low periods of nutrient limitation, some were very efficient in DIP and DIN uptake > read full press release at NIOZ.