The die-off of the long-spined sea urchin Diadema antillarum in the 1980s highlighted its crucial role as a primary grazer in tropical western Atlantic coral reefs. However, natural recovery has been slow, exacerbated by a new die-off in 2022. Interest in actively restoring D. antillarum populations …

The Dutch Caribbean is making significant strides in coral reef restoration through innovative approaches to restoring invertebrate herbivores, as presented by Alwin Hylkema of Van Hall Larenstein University of Applied Sciences and Wageningen University during the DCNA Reef Restoration Workshop. Hylkema …

That coral reefs are in decline worldwide, particularly in the Caribbean, will come as no surprise. This decades-long decline has reached a potential tipping point as the weight of the effects of climate change have come decidedly to bear on the planet’s most diverse marine ecosystem. Whether coral reefs …

Tropical western Atlantic reefs have gradually shifted from being dominated by corals to being mainly covered by macroalgae. The mass-mortality of the sea urchin Diadema antillarum in the 80s and the slow to non-existent recovery exacerbated this shift. Chemical cues associated with these reefs are expected …

Due to the rise of global temperatures both local and global climate systems are disrupted or altered. This study is about one of the ecosystems that are most affected by climate change, the world’s tropical coral reefs. One way to combat this global decline in coral reefs is the supplementation of natural …

Climate change is a major threat for the Hawksbill turtle (Eretmochelys imbricata). A lot of research has been done on the possible effects, but a clear overview is still lacking. This literature review aims to provide an overview of the effects of climate change on the nesting success, sex ratio and …

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 …

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 …

Al jaren bestaat er discussie en onduidelijk over de kwalificatie van de arbeidsovereenkomst en de overeenkomst van opdracht voor zzp’ers. Zzp’ers worden namelijk in sommige gevallen onterecht onder een overeenkomst van opdracht geplaatst terwijl er in de praktijk sprake zou zijn van een arbeidsovereenkomst …