
Saturday, February 27, 2010
Toe Pads & Tails

Wednesday, February 17, 2010
One Year of Stimulating Science

For years, the NSF has received many more worthy proposals than it was able to fund, resulting in a logjam of high quality proposals and stifling progress in many important disciplines. Indeed, nearly 80% of the NSF's ARRA funds went to clearing the NSF's backlog, being used to fund highly rated, but unfunded, awards that were submitted the previous year. Although those who didn't submit proposals eligible for ARRA support might feel like they've been left out, the clearing of NSF's backlog is sure to result in higher funding for proposals submitted more recently.
Short-sighted politicians are likely to find fault with the fact that the NSF ranks second to last among federal agencies in spending their stimulus funds (only $136 million of the NSF's ARRA award has been spent). The reason for this are clear - most grants from NSF are multi-year awards and are going to sit in the bank accounts of awardee's institutions as they are allocated over the years to come. This does not mean, of course, that these awards are not having an immediate impact. The bulk of the money associated with my award is going directly to salaries of PhD students and undergraduate employees. My collaborator is using his share of the funds to hire two post-doctoral scholars. Our award, therefore, will directly fund three-four full time positions and a number of additional part-time positions for the next two and half years. Perhaps more importantly than providing jobs today, our award is also contributing tremendously to training the next generation of scientists. While it may not have the same immediate impact as other worthy investments like hiring jobless construction workers to build bridges and roads, the ARRA's gift to the NSF is likely to be a gift that keeps on giving both to the academic community and the country at large for many years to come.
Monday, February 15, 2010
In Memoriam: John Thorbjarnarson

The photo came from this website, which has a nice interview with John about his work.
You may also see John in action in the Amazon in this National Geographic clip.
Friday, February 12, 2010
Darwin Day at Case Western Reserve University

I'm spending Darwin day at Case Western Reserve University as one of several folks speaking on the topic of phylogenetics and evolution. The event's two headliners just wrapped up their talks. University of Michigan paleontologist Philip Gingerich gave an enlightening talk about evolutionary rates. Discussing a result that dates back to his famous debate with Stephen Jay Gould over punctuated equilibrium in early 1980s, Dr. Gingerich showed why the dramatic inverse correlation between rates of evolution and the interval of time over which they are measured is a simple mathematical artifact. For those interested in more on this work, Dr. Gingerich published a nice review in the Annual Review of Ecology, Evolution and Systematics. Gingerich also provided an interesting anecdote about Gould. Early in his talk today, Gingerich asked the audience how many figures were in the Origin. As any phylogeneticist knows, the answer is one: Darwin's classic illustration of the branching tree of life. Apparently when Gingerich asked this same question when Gould was in the audience Gould quickly, and incorrectly, blurted out "two!"
The other headliner today was the godfather of phylogeography, John Avise. This is the first time I've seen him speak, so it was nice that he provided a 22 point retrospective on the lessons learned from phylogeography. It's amazing to think that his first papers on this topic were published over 30 years ago now!
Thanks to Case Western's Institute for the Science of Origins for sponsoring today's event!
Sunday, February 7, 2010
The End of Adaptive Radiation?

The problem with this argument is that it focuses exclusively on the one feature of adaptive radiation that is controversial - namely, whether extraordinary diversification is intrinsic to adaptive radiation. While I agree with Olson and Arroyo-Santos's suggestion that efforts to define adaptive radiation on the basis of the extraordinary levels of diversity are hopelessly ambiguous and arbitrary, I disagree with the fundamental premise that extraordinary diversification, in any form, is intrinsic to adaptive radiation. If we focus on the shared features of modern definitions of adaptive radiation, we find that it can be universally defined as a response to natural selection and ecological opportunity involving divergence of species and associated adaptive features. In this sense, adaptive radiation is analogous to the ‘principle of divergence’ that Darwin introduced in the Origin by suggesting that “the more diversified the descendants from any one species become in structure, constitution, and habits, by so much will they be better enabled to seize on many and widely diversified places in the polity of nature, and so be enabled to increase in numbers.” Perhaps we should replace 'adaptive radiation' with 'principle of divergence,' but abandoning efforts to label the profoundly important evolutionary phenomenon that underlies these terms seems like a bad idea to me.
Friday, February 5, 2010
Phriday Phun with Photoshop

It seems like everyone blogging about the bat alcohol tolerance story in PLoS One has come up with their own Photoshopped image of a bat getting drunk. This is your chance to vote for your favorite! For a larger version of this image, go here.
Which is the best photoshopped image of a bat getting drunk?
Thursday, February 4, 2010
Designated Fliers

I give thanks to Sam Crane who patiently walked me through PhotoShop again so I could make this picture.
Wednesday, February 3, 2010
Going Rogue

Tuesday, February 2, 2010
Rotten Fish and the Chordate Tree of Life

In a very clever study published last week in Nature, Sanson et al. allowed specimens of lancelets and larval lampreys (ammocoetes) to decay in artificial seawater in the laboratory. The anatomical features that are the most important for distinguishing clades in the phylogeny were the most prone to decay, while the least informative (pleisiomorphic) characters were more resistant to decay. The results are striking and have important implications for the evolutionary interpretation of early chordate and vertebrate fossils. The bias in anatomical decay will result in placement of derived lineages further down the stem of the phylogeny, a phenomena the authors refer to 'stem-ward slippage.' As a result, placement of chordate and vertebrate fossil taxa on the stem of their respective phylogenies may be an artifact of character preservation. As such, the phylogenetic position of fossil taxa lacking derived features, but possessing character states of stem chordates or vertebrates, may be suspect. A video showing time lapse photography of a rotting lamprey is available on Nature's youtube channel. Picture of the cleared and stained ammocoete from www.biology.uco.edu/PersonalPages/CButler/.
Monday, February 1, 2010
Trees in Pop Culture: The Darwin Electro-Opera

Did you ever think you'd see a phylogenetic tree displayed in laser light as the backdrop to an opera? Well, neither did I, but that's exactly what happens during an opera based on Darwin's life and works written by the Swedish synth-pop innovators and Pitchfork darlings known as The Knife. The image above is a screen capture from the 2:37 mark of a 7 minute preview video in which one of Darwin's hand-drawn trees is clearly visible. The soundtrack releases via theknife.net tomorrow, but you can preview it now at NPR. Reviews and commentaries on this work are all over the place. NPR's All Songs Considered blog links to a twenty minute roundtable discussion with The Knife and their collaborators (Mt. Sims and Planningtorock) that is almost as bizarre as the video. If one thing is clear, it's that they've taken the task of learning about Darwin and his theory rather seriously. The resulting music is fascinating and full of meaning, but its also a bit abstract for the minds of most scientists.
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