Andrew is a post-doctoral researcher in North Carolina focused on population and conservation genetics in hydrothermal vent communities.



David is a graduate student in Florida. He studies the ecology and conservation of sharks.




Amy is a graduate student in North Carolina studying local ecological knowledge within small scale fisheries.



Chuck is a graduate student in North Carolina focusing on apex predators and how they interact with fisheries.




Lyndell is a graduate student in North Carolina, studying the feeding ecology of cownose rays.




Iris is a graduate student in Washington studying habitat use and feeding habits of juvenile Pacific salmon and herring in Puget Sound.



Michael is a graduate student in Maryland investigating the visual systems of mantis shrimp.



Archives

Maximum (un)Sustainable Yield

This post was chosen as an Editor's Selection for ResearchBlogging.orgIn 1954 and 1957 Gordon and Schaefer respectively described the idea of maximum sustainable yield (MSY) – that is, the amount of fish that could be taken by commercial fishing operations to maximize reproduction by the system year after year. Since then, it has been heralded as the mathematical panacea to fisheries management.

Gordon and Schaefer also described the maximum economic yield which threw price relations into the mix.  It describes the point at which the fishers will make the most money, accounting for revenue and their expenses. Note in the graph below the fold that the maximum economic yield (MEY) is below the MSY in terms of effort. Gordon and Schaefer imagined a private manager or government overseer that could calculate the MEY and regulate fisher behavior in order to meet it. The idea was meant to be win-win for the fishers and the fish.

Continue reading Maximum (un)Sustainable Yield

Wading Through a Sea of Eco-Certification

With seafood season in full swing, I thought I’d repost this review of certification programs.  I’ve learned lots since writing this article, most notably that the compiled data from the EDF study comes from a huge database of government sources. This gives me more confidence in their truth, but the areas tested are still light on estuaries.  Everything else still stands.  Please check back at the old site for comments.

Another thought process to add to the many considerations of food ethics: if you choose to eat seafood, which fisheries are sustainable and eco-friendly?  For those of us who live on the coast, seafood confused fishrepresents local food that supports local businesses and helps make the connection between producer and consumer.  So step one, deciding to eat seafood, has been taken.  But then what?  A number of nonprofits have taken on that burden and created seafood guides and certification to help you as an informed consumer.  Only problem is, they sometimes differ in their listings based on what criteria they use and how they weight those criteria. Continue reading Wading Through a Sea of Eco-Certification

The Menhaden of History

ResearchBlogging.orgMenhaden were the most important fisheries throughout American history. When the first settlers learn to farm corn, it was with menhaden that they fertilized the seeds. When the whaling industry reached its height, it was outweighed by menhaden oil. Menhaden ruled the ocean from the middle of the food chain, they were the dominant prey of most large predatory fish. They swarmed the sea in schools several miles long and millions of fish deep. Their huge biomass supported by plankton, they regulated algal blooms, mediated the transfer of primary production up the food chain, filtered the ocean.

Continue reading The Menhaden of History

Social Science to the Rescue

The cultural driver of shark killing - from topnews.in

Can social science save the sharks? A recent article in Progress in Oceanography by Peter Jacques seems to think so, calling for a “social oceanography”. In other circles, this could be known as the human dimensions of a marine ecosystem or the social side of a socioecological system. Either way, the field exists already.  However, it’s small and generally not recognized outside of purely academic circles. It may be time for us to step outside of our comfort zone. Continue reading Social Science to the Rescue

Geography of Fishes

The discipline of geography is one that most people likely dismiss as mapmaking.  Gone is the stodgy cartographer and here is the GIS tech wizard. But outside of very particular applications, do most people really give geography a second thought?  I hope to show through a famous fishery example that the world should give geography more attention – the Peruvian anchovy fishery.

First a bit of context.  Geography is a diverse discipline, spanning applications from environment to physics to cultural anthropology.  At the core of the discipline is the importance of place – something very simple yet very often forgotten.

Continue reading Geography of Fishes

Public fence-sitting then falling to one side

I recently attended a public hearing for a proclamation in the state of North Carolina that proposed to ban large-mesh gill nets in two areas of the state’s estuaries where sea turtle encounters have recently increased. There’s a large back story to both sides of the case and a lot of emotional motivation on both sides, leaving science flattened in the wake of charismatic leaders promoting their personal values. In fact, science became a bit of a flattened tool, left on the ground until useful to pick up and brandish, like a much-forgotten sword cast aside until it’s in a handy spot mid-battle. The meeting started as a classic jobs versus the environment case, but a few hours into the public comment period, I began to realize why this particular meeting had attracted the attendance of well over 300 people. I wasn’t in Kansas anymore, but at the crossroads of some of the largest debates in commercial fishing.

turtle release from the turtle hospital

Continue reading Public fence-sitting then falling to one side

Piracy isn't so good for fish after all

The piracy situation in Somalia is a terrible human tragedy. That’s why when conservationist Joni Lawrence said that it was great because it helped fish stocks to recover,  people like myself and Blogfish author Mark Powell got angry. As it turns out, Joni Lawrence wasn’t just being horribly insensitive- she was wrong.

Continue reading Piracy isn’t so good for fish after all