Science – Page 44 – Southern Fried Science

A selection of primary literature on the ecology of deep-sea hydrothermal vents in Manus Basin

August 7, 2012August 7, 2012 Andrew Thaler

Science

Deep-sea mining is once again in the news. As Kevin Zelnio frustratingly points out on twitter, news articles often fail to mention the primary research that has been conducted at these sites or make more than a cursory statement concerning their ecology. This has the effect of marginalizing an entire ecosystem and makes it difficult for the public to grasp the richness and diversity of deep-sea hydrothermal vent communities, some of which may face commercial exploitation. Here is a selection of recent primary literature, with abstracts, on the ecology of deep-sea hydrothermal vents at the center of the mining debate, Manus Basin (you may recognize some of the authors).

The importance of being Aquaman, or how to save the Atlantean from his briny fate

July 30, 2012September 14, 2012 Andrew Thaler 2 Comments

Popular Culture, Science

Aquaman has an unpleasant lunch. From New 52 Aquaman #1 DC Comics.

Two weeks ago, I challenged the world to consider how the greatest hero in the DC Universe would fair if forced to survive in the real world. The result was a hypothermic, brain-dead lump of jerky with brittle bones forced to suffer through constant screams of agony even as he consumes sea life at a rate that would impress Galactus. In short, the ocean is a rough place, even for Aquaman.

Since that post made its way across the internet, several people have asked me to discuss what adaptations Aquaman would need to survive in this, science-based, ocean. So I went back to my comic books and my textbooks to assemble an Aquaman with a suite of evolutionary adaptations that would allow a largely humanoid organism to rule the waves, trident triumphantly raised.

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Live from Dayton: Using twitter to shed light on the Scopes Monkey Trial, 87 years later

July 23, 2012July 23, 2012 Andrew Thaler

Science

Clarence Darrow and William Jennings Bryan, 1925

Over the last 2 weeks, I’ve taken to twitter to “live-tweet” the Scopes Monkey Trial, as it happens, 87 years after the event. Through the news reports of H.L. Mencken and several historical documents, I attempted to capture the atmosphere of 1925 Dayton, Tennessee, the tension of the trial, the exciting, and sometimes irreverent, nature of the proceedings.

To accomplish this, I drew from several publications, most notably Mencken: The American Iconoclast by Marion Elizabeth Rodgers and A Religious Orgy in Tennessee: A Reporter’s Account of the Scopes Monkey Trial a collection of Mencken’s Scopes Trial reports assembled by Art Winslow. The website The Evolution-Creationism Controversy: A Chronology was very helpful in establishing the dates for various events during the trial State v. Scopes: Trial Excerpts provided access to the public testimony for several key trial events.

Below the fold is the entire archive of my Scopes Trial tweets, with added resources and additional content. Enjoy!

South Carolina Governor Nikki Haley slashes funding for coastal science and sustainable development

July 12, 2012January 9, 2024 David Shiffman 4 Comments

Science

Earlier this week, South Carolina governor and rising tea party star Nikki Haley cut all state funding for the South Carolina Sea Grant Consortium. Sea Grant programs are a critical part of the United States’ marine and coastal research network. In addition to providing millions of dollars in scientific grants, the national Sea Grant college program (of which the South Carolina consortium is a member) connects scientists, educators, and citizens with the goal of “helping citizens utilize scientific information to support a vibrant economy while ensuring ecological sustainability” (source). In total, there are 32 Sea Grant programs throughout the country, which help coordinate research and strategic goals with experts in every state that borders an ocean or one of the Great Lakes.

Despite Governor Haley’s claims, the Sea Grant Consortium is basically the opposite of big government and wasteful government spending. Though they are administered centrally by the National Oceanic and Atmospheric Administration, each Sea Grant program is independently run. According to Executive Director Rick DeVoe,

“It is important to note that the programs we undertake are developed as a result of the input we solicit from our stakeholders along the coast and inland – businesses and organizations, NGOs, and people who depend on coastal and marine resources for their livelihoods, their pleasure and their quality of life….The S.C. Sea Grant Consortium generates and applies science-based information on issues and opportunities to enhance the practical use and conservation of coastal and marine resources to foster a sustainable economy and environment in the state and region.”

The state contribution pays mostly for local staff and facilities that are used to apply for and distribute grants. Since much of the funding for grants they distribute comes from the Federal government, the entire state-contributed budget for the South Carolina Sea Grant Consortium is a little over $428, 000 out of a total state budget of around $21,000,000,000, less than the total salaries of the Governor’s personal staff. Cutting this critical program thus results in a 0.002% reduction in state government spending, right after the state of South Carolina got more than $1.4 billion in increased tax revenue as a result of the economy improving.

Genetics study reveals 79 potentially new species of sharks and rays: what does it mean for science and conservation?

July 3, 2012July 3, 2012 David Shiffman 3 Comments

Conservation, Science

When Dr. Gavin Naylor and his team started a genetic survey of existing shark and ray species, they didn’t expect the results of their project to make international news. Their recent paper (which, at over 250 pages and complete with more than 100 figures, is nothing short of epic), however, is too striking to ignore. The results indicate that there may be as many as 79 previously unrecognized cryptic species of sharks and rays.

A cryptic species is defined as a group that looks almost exactly like another, and may even live in the same region, but is genetically distinct. We’ve known that cryptic species of sharks and rays exist for some time, such as manta rays and scalloped hammerhead sharks, but 79 is a lot; as of the paper’s publication, only 1,221 species of sharks and rays were recognized.

According to Dr. Naylor,

“Organisms become genetically differentiated over time through the cumulative effects of mutation and recombination mediated via drift and selection. When they differentiate in isolation they eventually become so different from the parental stock from which they were derived that they can no longer produce fertile offspring when crossed with them. Some biologists use the point of reproductive inviability as the point at which new species should be recognized….. For practical purposes we recognize “new species” as being genetically or morphologically distinctive from previously recognized forms.”

The study’s methods, though enormous in scope, were relatively basic. According to Dr. Naylor, the study utilized a technique very familiar to geneticists: “standard DNA extraction, PCR, Sanger sequencing, alignment and analysis of a protein coding mitochondrial gene”. To achieve the goals of understanding both evolutionary relationships of sharks and rays and parasite host specificity ( where certain parasites associated only with one species), Dr. Naylor and his team obtained and analyzed samples from as many species as they could. The numbers are impressive- 56 of 57 known families of elasmobranchs were represented among the 4,283 samples from 305 species of sharks and 269 species of batoids. In other words, this study included approximately half of all known elasmobranch species, including many that had never been analyzed genetically before. Since 1986, when the project began, samples have been obtained in more than 50 countries, mostly through the team’s own field work!

An 8th grade WhySharksMatter gets career advice

July 2, 2012 David Shiffman 3 Comments

Science

A few weeks ago, I went home to Pittsburgh to surprise my mom for Mother’s Day. While there, I had the unenviable task of emptying out my childhood bedroom in preparation for my parents moving to a smaller place. I was apparently a bit of a pack rat growing up- while cleaning the room, I found every birthday card I had received and every test I had taken from elementary school through high school. I also found the results of my 8th grade career aptitude test, taken in 1999.

Based on my skills and interests, the “Career Futures” computer had recommended three potential careers for me: high school science teacher, military officer specializing in intelligence gathering, and marine biologist. Some of you may also know that three years later, my high school guidance counselor half-jokingly recommended that I consider a career as the leader of a cult, but that’s a story for another time.

While taking a break from cleaning out my room, I looked over the full reports for each career choice. The description of the career of a marine biologist was of particular interest, since that’s what I actually ended up doing with my life (I am definitely not secretly working as a military intelligence officer, nothing to see here, move along).

World Oceans Day #OceanFacts

June 26, 2012 David Shiffman

Science

On World Oceans Day, I asked the online marine science and conservation community to tweet their favorite facts about the ocean using the hashtag #OceanFacts . Dozens of people joined the discussion, and more than 300 #OceanFacts were contributed. These tweets cover a variety of topics, from marine invertebrates, fish, sharks, and marine mammals to facts about the ocean itself and conservation policy. The discussion also inspired a great deal of humorous posts, including an entire spinoff #OceanFibs hashtag. Some of my favorite #OceanFacts tweets are saved in the Storify below.

What shark finning means (and doesn’t mean): a primer and quiz

June 18, 2012June 26, 2012 David Shiffman 82 Comments

Conservation, Science

Shark finning, one of the most wasteful, unsustainable, and inhumane methods of gathering food in the history of human civilization, has rightly become a hot topic in the marine conservation movement. However, there is a great deal of confusion among activists concerning this problem and the best way to solve it. Those of you who follow me on twitter have seen me point out numerous recent anti-finning “awareness campaigns” which feature photographs of sharks that have not actually been finned.

Shark finning does not mean removing the fins from a shark. This is really important and seems to be a source of some confusion- not every shark fin for sale in markets is the result of shark finning! Shark finning means removing the fins from a shark while still on the fishing vessel and dumping the rest of the shark overboard. This is a problem because its wasteful (less than 10% of the weight of a shark is used), because its easy to quickly overfish a population even from a small boat (fins don’t take up a lot of space on board), and because its almost impossible for managers to know how many of each species were harvested. As stated above, this practice is also shockingly inhumane, as the sharks are often still alive when they are dumped overboard.

Understanding Sea Level Rise: Why a linear extrapolation is the least reasonable predictor of future changes

June 14, 2012June 18, 2012 Andrew Thaler 2 Comments

Conservation, Science

The Division of Coastal Management shall be the only State agency authorized to develop rates of sea-level rise and shall do so only at the request of the Commission. These rates shall only be determined using historical data, and these data shall be limited to the time period following the year 1900. Rates of sea-level rise may be extrapolated linearly to estimate future rates of rise but shall not include scenarios of accelerated rates of sea-level rise.

source (emphasis mine)

This is the text of the notorious, anti-science, anti-coastal community bill that was originally floated in the North Carolina state senate. A revised version of that bill is now under review, with new language that now mandates that:

The Commission and the Division of Coastal Management may collaborate with other State agencies, boards, commissions, other public entities, or institutions when defining sea-level rise or developing rates of sea-level rise. These rates shall be determined using statistically significant, peer-reviewed historical data generated using generally accepted scientific and statistical techniques. Historic rates of sea-level rise may be extrapolated to estimate future rates of rise but shall not include scenarios of accelerated rates of sea-level rise unless such rates are from statistically significant, peer-reviewed data and are consistent with historic trends.

source (emphasis mine)

While this new language is almost certainly an improvement over the old bill, which was heavily supported by a lobbying group for coastal developers and heavily opposed by organizations that actually care what happens to the Carolina coastline and its historic communities, it is still problematic. By problematic, I mean wrong. And by wrong I mean that by refusing to allow accelerated estimates of sea level rise, it explicitly ignores all the best available science and contradicts 130 millenia of historic precedent.

Medusa: Scientists document rarely seen deepwater sharks using baited video cameras

June 14, 2012June 14, 2012 David Shiffman 1 Comment

Science

The deep sea is one of the largest, least explored, and most unique ecosystems on the planet. An enormous variety of weird and wonderful creatures make the deep sea their home, including many species of sharks. A new project, headed up by our friends at the Cape Eleuthera Institute, hopes to learn more about these sharks.

According to Edd Brooks, CEI’s shark research and conservation program manager,

“About half of all known species of sharks make this cold, dark high pressure environment their home, and new deep water species are being described all the time. The issue we are currently facing is that basic information about the taxonomy, biology and ecology of these animals is virtually non-existent, yet they are already being harvested by commercial fisheries. The little we do know about deep water species is worrying, in that they are thought to be more sensitive to fishing pressure than all other fish – and look what we have managed to do their more robust shallow water cousins already. The worry is that in some areas, we are already be losing species before they can be described taxonomically.”