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 …

Fish assemblages of different types of artificial reefs can differ greatly in abundance, biomass and composition, with some reef types harboring over five times more herbivores than others. It is assumed that higher herbivorous fish abundance results in a higher grazing intensity, affecting the benthic …

The 1983-1984 die-off of the long-spined sea urchin Diadema antillarum stands out as a catastrophic marine event because of its detrimental effects on Caribbean coral reefs. Without the grazing activities of this key herbivore, turf and macroalgae became the dominant benthic group, inhibiting coral recruitment …

Diadema sea urchins (Diadema antillarum) are important algae grazers, but restoration attempts often record low survival of restocked individuals. This article sheds light on one of the causes for unsuccessful restocking. Restocked sea urchins were monitored with time-lapse cameras for 10 days. There …

This thesis is a literature review on the impact of global warming on the great whale pump in Europe. Global warming is known to have an effect on different ecosystems around the world. However, what is largely unknown is the impact of global warming on marine systems and specifically large whales that …

In Nederland wordt veel ecologisch onderzoek gedaan naar vissen, vaak gericht op het migratiegedrag en de belemmeringen die vissen tegenkomen wanneer ze tussen de verschillende leefgebieden migreren. Als vissen worden voorzien van zenders of merkjes staat het welzijn hierbij centraal.

In de middeleeuwen was geweld op de zeeën rondom Europa endemisch. Piraterij was de norm. Scheepvaart en geweld gingen hand in hand. In de Lage Landen was het niet anders. Vanaf de vorming van de kustgraafschappen tot aan de Nederlandse Opstand waren handel, zeeroof en maritieme oorlogvoering onlosmakelijk …

Nature-based strategies, such as wave attenuation by tidal marshes, are increasingly proposed as a complement to mitigate the risks of failure of engineered flood defense structures such as levees. However, recent analysis of historic coastal storms revealed smaller dike breach dimensions if there were …

The massive die-off of the sea urchin Diadema antillarum in 1983–1984 is one the main reasons for low coral recruitment and little coral recovery in the Caribbean. As the natural recovery of D. antillarum is slow to non-existent, multiple restoration studies have been attempted. There are currently three …

This thesis provides an answer to the question if the International Council for the Exploration of the Sea (ICES) does fulfil its own objective of supporting Ecosystem-based management by producing Ecosystem Overviews as advice. Against the background of ongoing changes and pressures on the ecosystem, …