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Category: Science

Diving the deepest hydrothermal vent field in the world – experience it live!

Posted on August 5, 2011 By Andrew Thaler 4 Comments on Diving the deepest hydrothermal vent field in the world – experience it live!
Science

The Okeanos Explorer is diving on the Cayman Rise – the location of the deepest known hydrothermal vent field, and they are broadcasting the ROV feed live, right now. You can be experiencing this: …right now. Go here: http://oceanexplorer.noaa.gov/okeanos/media/exstream/exstream.html

Tagging Bull Sharks in the Neuse River

Posted on August 4, 2011August 4, 2011 By Guest Writer 17 Comments on Tagging Bull Sharks in the Neuse River
Science

Meagan Dunphy-Daly is a graduate student at the Duke University Marine Lab studying the effectiveness of marine reserves in protecting apex predators. She also has ongoing research examining bullshark/dolphin interactions in the Neuse River, NC, where she recently caught an 8 foot bullshark.


Well, it’s Shark Week and instead of heading up to the Neuse River to try to track bull sharks, I’m sitting in front of my computer staring at the marine forecast. Right now, we’re under a small craft advisory until tomorrow night and we’re all keeping our eyes on what Tropical Storm Emily is going to do over the weekend. Such is the ever-exciting life of a field biologist. Although there are a fair number of days spent in an office in front of a computer (be it checking the weather, entering data, or hoping that a manuscript will write itself), the days in the field are what make this job so sweet. I’m a graduate student in Dr. Andy Read’s Lab at Duke University and, in addition to my dissertation interest in the effectiveness of marine reserves for apex predators (think sharks, tuna, and billfish), I have the chance to carry out and participate in many other research projects in North Carolina and elsewhere (check out Reny Tyson’s previous posts on our trip to Antarctica). This summer, I’m studying bull shark habitat use in the Neuse River. Andrew joined us for a day of fieldwork last week and, although we didn’t catch a shark on this trip, we caught a big bull shark on the first day of our season the week before.

Read More “Tagging Bull Sharks in the Neuse River” »

Shark Experts and Shark Celebrities are being Auctioned during Shark Week

Posted on August 1, 2011August 3, 2011 By Andrew Thaler 3 Comments on Shark Experts and Shark Celebrities are being Auctioned during Shark Week
Science

Including our very own David Shiffman (aka WhySharksMatter)!

You’ve seen them on Discovery Channel’s Shark Week, Animal Planet, Nat Geo and the BBC − they are the top shark experts in the world! Now meet them in person for lunch or dinner, learn why they love sharks, and why sharks need protection!

More than 50 of the world’s top shark experts are allowing themselves to be auctioned to raise funds for the Shark Research Institute’s conservation programs. Up for auction are dinners (or lunches) with the world’s foremost shark experts. Each winning bidder has the unique opportunity to “talk shark” face- to-face, one-on-one, with a real authority on sharks.

Read More “Shark Experts and Shark Celebrities are being Auctioned during Shark Week” »

A primer for climate change

Posted on July 24, 2011July 24, 2011 By Andrew Thaler 69 Comments on A primer for climate change
Conservation, Science

Sea level rise. Desertification. Ocean acidification. Climategate. Permafrost. Greenland ice sheet. Hockey stick. The language of global climate change can be overwhelming. Every year, as we learn more about the ways that human activity fundamentally alter global processes, the subject becomes even broader and more complicated. Fortunately, world renowned oceanographer Orrin Pilkey and his son, Keith Pilkey, have produced a comprehensive and readable primer on global climate change. The strength of Global Climate Change: A Primer can be broken into three sections – the content, the conflict, and the illustrations.

Read More “A primer for climate change” »

World’s oldest known bonnethead shark captured in South Carolina!

Posted on July 21, 2011 By David Shiffman 2 Comments on World’s oldest known bonnethead shark captured in South Carolina!
Conservation, Science

Bonnethead sharks have always occupied a special place in my heart (and in the photo of myself that I use for Southern Fried Science). These animals, a member of the hammerhead family, are some of the most abundant sharks along the coast of the Southeastern United States. While the IUCN Shark Specialist Group rates bonnetheads as “Least Concern”, the assessment noted that these sharks are subjected to heavy commercial and recreational fishing pressure.

Read More “World’s oldest known bonnethead shark captured in South Carolina!” »

New research lists tuna species as threatened; will fisheries managers act?

Posted on July 14, 2011July 14, 2011 By David Shiffman 2 Comments on New research lists tuna species as threatened; will fisheries managers act?
Conservation, Science
Image courtesy Keith Ellenbogen, OCEANA

Bluefin tuna have become a posterchild for the marine conservation movement. A single bluefin can sell for tens or even hundreds of thousands of dollars, which results in heavy fishing pressure. Conservationists and fisheries scientists have tried for years to get the fishing quota reduced. They tried to get  CITES protection for the bluefin. Citing both heavy fishing pressure and the fact that the oil spill occurred in bluefin spawning grounds in the Gulf, some recently tried to get these animals protected under the Endangered Species Act. To date, these efforts have fallen short, resulting in just a modest quota reduction at ICCAT. New research, however, shows just how important protecting this group of fishes is.

Read More “New research lists tuna species as threatened; will fisheries managers act?” »

Largetooth sawfish to become second elasmobranch to receive Endangered Species Act protections

Posted on July 13, 2011 By David Shiffman 1 Comment on Largetooth sawfish to become second elasmobranch to receive Endangered Species Act protections
Conservation, Science

The Largetooth Sawfish (Pristis perotteti) is about to become the second elasmobranch protected by the Endangered Species Act, a welcome step in the conservation of these animals.  In addition to the slow growth, low number of offspring, and relatively late maturity which characterizes most elasmobranchs, another  biological feature contributes to sawfish being “among the most endangered fishes in the world,” according to Shark Advocates International President Sonja Fordham. It’s hard to imagine a biological structure that can get more thoroughly entangled in fishing nets than the “saw” on their rostrum, and bycatch is one of the leading causes of population decline in this group of animals. Additionally, the saw used to be a part of the souvenir trade.

Read More “Largetooth sawfish to become second elasmobranch to receive Endangered Species Act protections” »

Ocean Conservation, Ecology, Science, and Outreach on Dr. Kiki’s Science Hour

Posted on July 10, 2011July 10, 2011 By Andrew Thaler
Conservation, Science

Check out my interview with Dr. Kiki Sanford on Dr. Kiki’s Science Hour. httpv://www.youtube.com/watch?v=Huf6ahIgShU And here’s a direct link for a high resolution version.

Rumors from the Abyss: visions of a future without deep sea conservation

Posted on July 6, 2011July 10, 2011 By Andrew Thaler 3 Comments on Rumors from the Abyss: visions of a future without deep sea conservation
Conservation, Science

Bathymetric map, click for GEBCO high resolution image

The deep benthos is simultaneously the largest and least explored ecosystem on the planet. Covering nearly 60% of the Earth’s surface, it supports an almost unimaginable reservoir of biodiversity, rivaling all terrestrial habitats combined. Its microbial and metabolic diversity have revolutionized our view of how life is sustained, not once, but twice (first with the discovery of chemoautotrophic organisms at hydrothermal vents, and again with the discovery of cognate communities at methane cold-seeps). In spite of these major discoveries, the deep benthos is essentially invisible. Only a select few will ever witness it first hand, while for the rest, it will remain a dark and unfathomable abyss.

This places the deep benthos in a precarious position. Human activities that influence the deep sea go unnoticed. Without a thorough understanding of its ecology, it is impossible to assess the damage caused by anthropogenic impacts. Although recent and ongoing studies have shed light on many species and communities, the deep benthos remains largely unexplored. Two studies, both released this week, reveal simultaneously how little we know about the deep benthos and how human impacts, even unintentional ones, could shape this ecosystem.

Read More “Rumors from the Abyss: visions of a future without deep sea conservation” »

Things you might like to know about Physical Oceanography – Tsunamis

Posted on July 5, 2011July 5, 2011 By Andrew Thaler
Popular Culture, Science

This entertaining and informative video comes to us from physical oceanography graduate student Katie Smith. Hat Tip: Girls are Geeks

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