Protecting Deepwater Fish Populations in Hawaii

by Katie Huang

Starting in 1998, specific types of marine protected areas (MPAs) called bottomfish restricted fishing areas (BRFAs) were implemented throughout Hawaii to address conservation concerns over deep-sea species. Although much research has been conducted on how MPAs benefit shallow reef fish populations, less is known about how protection affects deepwater ecosystems. Sackett et al. (2014) studied four BRFAs of differing ages to determine whether relative abundance, mean length, and species richness of seven commonly exploited species varied when compared to unprotected regions. The authors took video surveys along the deep sea floor in both types of areas and counted the number and type of fish in each. They found that mean fish length Continue reading