Fisheries ecology

 

Oio Tagging Project

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Collaborators: Keith Kamikawa, Eva Schemmel, Alex Filous, Alan Friedlander
more information: Oio Tagging website

The objectives of Oio tagging Project are to provide outreach and education on the biology and fisheries of oio (bonefish) in Hawai‘i and to foster collaboration and trust between the fishing community, scientists, and resource managers. The project involves participating fisherman through the tag and release of oio, which encourages a conservation ethic for the species. We also collect biological and ecological information on oio to determine important life history information for each species (Albula virgata and A. glossodonta). We have published information on peak spawning seasons, diet, migration and habitat use, and growth rates of the two oio species.

 

Assessing Effect of Lay-gillnet Ban on Windward Oahu

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Collaborators: Alan Friedlander, Paolo Usseglio, Whitney Goodell, Ily Iglesias, Eva M. Schemmel, Kosta Stamoulis, Alex Filous, Jonatha Giddens, Keith Kamikawa, Hal Koike, Kaylyn McCoy, Christopher Wall

In 2007, due to growing concerns of declines in nearshore fisheries in Hawai‘i, a ban on gillnets was implemented in designated areas around the island of O‘ahu in the main Hawaiian Islands.  The Oceanic Institute (OI) and the Fisheries Ecology Research Lab (UH) regularly sampled the nearshore fish assemblages on windward O‘ahu from January 1997 to December 2013 with the goal of assessing the effect of the fisheries management action. Utilizing the 17 year time-series of juvenile fish abundance beginning prior to the implementation of the gillnet ban, we examined the effects on the abundance of soft-bottom associated fish species using a Before-After-Control-Impact (BACI) sampling design. We found that when multiple juvenile fish species were combined, abundance declined over time in both locations, but the pattern varied for each of four species groups examined. Bonefishes were the only species group with a significant BACI effect, with higher abundance in Kailua in the period after the gillnet ban.  

 

Biogeographic Assessment of the Main Hawaiian Islands

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Collaborators: Kosta Stamoulis, Jade Delevaux, Matt Poti, Matt Kendell, Brian Costa, Laurie Bauer, Brian Kinlan

In collaboration with the NOAA Biogeography Branch we used existing spatial data to characterize the distributions of benthic organisms, and fishes around the Main Hawaiian Islands to support the Bureau of Ocean Energy Management’s (BOEM) review of future requests for renewable energy leases and cable right-of-way grants in federal waters. My role in this project was to generate comprehensive databases of underwater visual census data for benthic organisms and fishes in the nearshore environment, and to assist with developing statistical models to predict the distribution of a number of variables that describe each assemblage. The outcome of the work is a database of information for future use in marine spatial planning, including BOEM’s assessments of future renewable energy projects.