Forecasting long-term consequences of global warming requires knowledge on thermal mortality and how heat stress interacts with other environmental stressors on different timescales. Here, we describe a flexible analytical framework to forecast mortality risks by combining laboratory measurements on …

Recent studies have shown that the climate is seeing a rapid change, causing amongst other sea level rise. Although the protection standards for conventional flood protection are generally high in The Netherlands, flood protection experts from government, research and industry are exploring alternative …

Native (flat) oyster (Ostrea edulis) beds, once a major component of the North Sea, largely disappeared from the region in the late 19th century. Flat oyster restoration is taking place at a number of locations in the North Sea. When flat oyster beds are restored in areas where O. edulis is functionally …

Seaweeds from the genus Porphyra play a big economic role in seaweed aquaculture, mainly in Asia. In Europe, resources are put towards seaweed cultivation, but without attention to the Porphyra species which is also native to Europe. Different nomenclature and specifications are used to describe Porphyra, …

Om Creuse en platte oesters te kunnen kweken zijn jonge oesters ('oesterbroed') nodig. Oesterbroed wordt verkregen door het invangen van oesterlarven. Traditioneel leggen oesterkwekers hiervoor lege mosselschelpen op de bodem van hun percelen. Er worden ook proeven gedaan met invangmateriaal dat vrij …

Als in het voorjaar de watertemperatuur stijgt, maken oesters zich klaar voor de voortplanting. Dit is het startpunt van nieuwe oesters. Zodra de bevruchting van eicellen plaats heeft gevonden, worden er oesterlarven gevormd. Maar wanneer zijn deze oesterlarven waarneembaar in de waterkolom en komen …

In het late voorjaar worden de eerste oesterlarven in het water waargenomen. Oesterlarven brengen gemiddeld 6-13 dagen (platteoesters) tot 21 dagen (Creuse oesters) in de waterkolom door voordat ze zich vestigen op hard substraat. Binnen dit project is er drie jaar rond de voortplantingsperiode invangmateriaal …

Anthropogenic changes to estuaries, usually highly productive systems, may result in increased turbidity levels, suppress pelagic primary production and negatively affect ecosystem functions. The Ems-Dollard estuary, enclosed between the Netherlands and Germany, is such an estuary with a long history …

Light is a form of energy produced by a luminous object which occurs as electromagnetic radiation and is closely related to other forms like radio waves, microwaves, gamma rays, infrared, UV and X radiation. The different kinds of radiation can be classified by using wavelengths. Only a small section …

The long spined sea urchin Diadema antillarum was an abundant grazer on Caribbean coral reefs, until 1983–1984, when densities were reduced by ∼98% during a region wide die-off. Since then, there has been very little natural recovery of the species and interest is growing in applying aquaculture as a …