Competition inhibits mussel growth and promotes mussel losses. Simultaneously mussels need each other for protection, a facilitation effect that might be more beneficial at higher densities. We expect that food levels play an important role in the relation between competition and facilitation. This is tested in a field experiment where the effect of mussel density and fluctuations in food levels, are related to mussel aggregation and performance.
"Heeft bevraging" is een vooraf gedefinieerde eigenschap die staat voor meta-informatie (in de vorm van een subobject) over individuele zoekopdrachten.