To increase the yield and quality of aquaculture feed, the effects of N and P concentrations on biomass productivity and cell composition were examined in the marine diatom Skeletonema costatum. Batch-cultured microalgae in Walne’s medium with 3.5 ± 0.5 mmol L-1 N-NO3- and 0.30 ± 0.05 mmol L-1 P-PO43- …

In the Province of Zeeland, ragworms (Alitta virens) are farmed on large scale in open rectangular (flow through systems) ponds. In April these ponds are stocked with ragworm larvae from a hatchery. The juveniles bury themselves in the sediment layer in the pond and are fed with feed pellets. Dependent …

In this study, various extraction methods were compared based on their ability to extract both free amino acids, and free 5’-monophosphate nucleotides from the seaweed Saccharina latissima. Based on the results, extraction at room temperature with Milli-Q over 24 hours was chosen as the method of choice, …

Daily life is greatly influenced by fossil fuels. New technological inventions and the reduction of the ice coverage due to climate change makes it possible for humans to be present and undertake activities, such as gathering oil in previously inaccessible areas like the North Pole (Sagerup, Nahrgang, …

The aquaculture sector is expanding worldwide, which gives this sector an important economic potential. A problem for the on land aquaculture sector is that there is insufficient quality feed for cultivating fish larvae and shellfish. Based on this problem the RAAQUA project was launched (Robust Algae …

OBJECTIVE: To assess the feasibility of conducting a randomised controlled trial to determine the effectiveness of a twenty-week power-assisted exercise intervention in people with profound intellectual and multiple disabilities and to evaluate the potential beneficial effects of this intervention. DESIGN: …

This research is conducted as a bachelor thesis of the programme Delta Management at the HZ University of Applied Sciences, Vlissingen and in cooperation with the Living Lab Water Indonesia by nuffic neso and Institut Teknologi Sepuluh Nopember, Surabaya. Plastic debris hindering recovery and reforestation …

From previous research in the western Wadden Sea it is clear that mussel plots are important hotspots for biodiversity. When the density of a mussel plot is higher, the biodiversity appears to be higher as well. This final thesis project was a part of the bigger project, ‘Added value with Mussels’, executed …

Population size increase at the Balgzand intertidal in the western Dutch Wadden Sea suggested a growth decrease in both plaice and flounder populations over summer. Research into the seasonal growth of 0-group plaice, Pleuronectes platessa, confirmed this suspicion. The years 1995 and 1996 had contrasting …

This study aimed to get more insight into the habitat use and distribution of three sandeel species (Ammodytes sp. & H. lanceolatus) in the Voordelta and describes the findings regarding the Voordelta as a transitional habitat for sandeel populations. As compensation for loss of habitat and foraging …