Over 15 years of ocean science and conservation online
“How do you study one of the world’s fiercest predators in the wild?” the cover of the “Expedition Great White” DVD screener that National Geographic sent me asked. I was delighted to discover that my sarcastic answer of “very carefully” is exactly what the back cover of the DVD case read! I knew I was going to like this show from that point on, and I was right.
Read More “Check out “Expedition Great White” on the National Geographic Channel!” »
While attending last year’s American Elasmobranch Society conference, I was asked to fill out a survey concerning my views on lethal shark research. My response, along with those of many other participants, has now been analyzed and written up into a new essay in the Journal of Conservation Biology. Michelle Heupel and Colin Simpendorfer argue that lethal sampling of some individual sharks is sometimes necessary in order to get the data needed to protect those animals’ entire species. However, attitudes about conservation in general and sharks specifically are changing, and many (including these authors) feel that this is starting to affect marine biology as a science.
Later this week, I’m headed to the land down under to attend Sharks International, a once-a-decade shark science conference. Scientists from six continents and dozens of countries will be presenting their research on sharks, rays, skates, and chimeras. This will be the first time I’ve presented my own research at any scientific conference. I’ll try … Read More “WhySharksMatter is going to Cairns, Australia!” »
At this point we’re running on autopilot a bit. As one of the Georgia students pointed out earlier today, we’ve become incredibly efficient at the protocols, just in time to start heading home tomorrow.
People have also had time to start analyzing their data from the first round of experiments. Interestingly, the phytoplankton community has changed significantly in our little patch of ocean over just the short time we’ve been here. Brian commented “I always assume, incorrectly, that the system will be static throughout the cruise. But it’s not, it’s surprisingly dynamic every year”.
New proposed regulations for the red snapper fishery have conservationists celebrating and fishermen marching on Washington, DC in protest. Quota reductions are some of the most extreme and far-reaching I’ve ever come across. A huge area of the ocean (over 10,000 square miles) has been targeted for closure of not just the red snapper fishery… but all “bottom fishing” of the 73 species in the snapper-grouper management complex. According to the South Atlantic Fisheries Management Council, such severe regulations are necessary because of the degree of overfishing that has been occurring (8 times the sustainable level since 1970). As a result of this overfishing, the stock is also considered to be seriously overfished- the National Marine Fisheries Service estimates that current stocks are 3% of target size. A total area closure is necessary, according to the SAFMC, because even accidental bycatch of red snapper while trying to catch other snapper-grouper complex fishes can seriously impact such a reduced population. Since these fish live in relatively deep water, they often die after being released. Finally, an 87% reduction in red snapper mortality needs to occur over many years (possibly decades) to rebuild stocks. These regulations are in place right now via a process called “the interim rule”, and meetings will take place later this year to determine if they should remain in place.
Because of the controversy surrounding this topic, SAFMC science personnel were unable to be interviewed. However, . Zack Bowen, a charter boat operator from Savannah, Georgia, and Blaine Dickenson, a recreational fishermen and SAFMC advisor, agreed to participate.
Read More “The red snapper controversy: Interviews with fishermen” »
A few days ago, Governor Linda Lingle of Hawaii signed the recently passed shark fin bill into law. Starting on July 1 of 2011 it will be illegal to possess or sell shark fins within the state of Hawaii. Though this law, the strongest shark protection law in North America, is a huge success, we … Read More “Hawaii shark fin bill signed into law!” »
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My day began with a balancing contest on the stern deck – who could stand on one foot the longest? It was an official welcoming to the world of those with sea legs. The rest of the day blended in with yesterday, when we ran our second diel experiment – nothing new there from the science end.
We pulled up our incubation/grazing experiment to look at the effect of grazers. We had dropped 96 bottles, each a different manipulated community, overboard. Turns out something got hungry and took a bite of the net bag that was holding the bottles underwater. We’d like to think shark, but that’s entirely our imaginations run wild. We spent the entirety of the day after lunch filling up large plastic carboys with water from the Sargasso – a prized medium for phytoplankton researchers. The water out here, though a classic mix of sea elements is very “clean”, meaning it has extremely low levels of organic matter, trace metals, or really any nutrients at all. It’s what makes the waters out here such a beautiful blue and is the reason we haven’t seen much life outside of the phytoplankton in our tubes the entire trip.
A stormy beginning makes for a busy end. We spent the day prepping for a couple of experiments that will happen tomorrow while we’re all awake for the second round of the diel experiment. We sent a go-flow, typically used to collect data on trace minerals in the water, overboard to gracefully collect and filter seawater to be used for growth medium in an incubation experiment. It’s hard to think about treating seawater nicely, but apparently the go-flow apparatus is designed to not split any cells upon entry or exit. This ensures that the phytoplankton we’re trying to grow and measure will have the most realistic experience in their little containers as possible tomorrow.