Three Main Biological Effects of MPAs
“Reserve
Effects” = higher density in
closed areas, demographic
shifts, reproductive output increased, potentially
resulting in:
“Spill Over” = net movement out of adults (apart from ontogenetic or other non-density related
movements)
A Really
Big Question: Is there a “Fatal Attraction” of fishing
effort to reserve boundaries, seeking spillover?
•
“ Export” = net export of larvae or juveniles to
open areas
Fisheries benefit from
permanently closed areas via Spillover, Export, or overall reductions in fishing rate