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Tiny Cameras Show Albatrosses on the Hunt

Tiny little cameras were attached to albatross as they flew around over the open ocean hunting. This is important because it is really hard to study albatross at open sea, and virtually impossible to follow individuals one might like to track from, say, a nesting grounds out many miles (they fly fast and far). By attaching cameras, temperature and depth gauges to the birds one gets some VERY interesting results.

I’ve written a review of a paper that just came out in PLoS on this topic and posted it at Surprising Science, here. Please have a look.

Cycad Sex

I’ve always had a fondness in my heart for cycads.


Encephalartos princeps

Years ago, while working in the Ituri Forest (in what is now the Congo), I kept hearing of a particular place in the forest, where the Efe Pygmies would occasionally but not often go for various reasons. Over time I asked about this place, and eventually made arrangements to visit. My first trip to what was known as the Kakba was a very long and difficult walk from a camp that was already about a day into the forest from the villages, where our research base camp was located. On approaching the Kakba, it was obvious to me that the habitat we were in … rain forest … was giving way to something else. The trees, for one thing, were more sparsely leafed out. We were in the middle of the “little dry season” and it seemed that as we climbed very subtly in elevation, we encountered areas where there was little or no groundwater, and the underlying granitic basement rock was right on the surface. The rain forest trees were still present, but more spread out and clearly water stressed.
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Rapid Resurgence of Marine Productivity After the Cretaceous-Paleogene Mass Extinction

ResearchBlogging.org

The course of the biotic recovery after the impact-related disruption of photosynthesis and mass extinction event at the Cretaceous-Paleogene boundary has been intensely debated. The resurgence of marine primary production in the aftermath remains poorly constrained because of the paucity of fossil records tracing primary producers that lack skeletons. Here we present a high-resolution record of geochemical variation in the remarkably thick Fiskeler (also known as the Fish Clay) boundary layer at Kulstirenden, Denmark. Converging evidence from the stable isotopes of carbon and nitrogen and abundances of algal steranes and bacterial hopanes indicates that algal primary productivity was strongly reduced for only a brief period of possibly less than a century after the impact, followed by a rapid resurgence of carbon fixation and ecological reorganization.

Interested? Confused? I’ve written up a more brain-friendly version of this at Surprising Science.
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No Strangelove Ocean

An important finding was reported last week in the same issue of Science as the new studies of Ardipithecus, and unfortunately, overshadowed by the news of the 4-million-year-old hominid. This finding may turn out to be even more important because it relates not to the evolution of a single species, but to the recovery of life in general on Earth following one of the greatest catastrophes ever….

Read the rest as surprising science.

Interesting Long Term Study of “Killer Bee” Role in South American Ecology

Aggressive African bees were accidentally released in Brazil in 1957. As “killer bees” spread northward, David Roubik, staff scientist at the Smithsonian Tropical Research Institute, began a 17-year study that revealed that Africanized bees caused less damage to native bees than changes in the weather and may have increased the availability of their food plants.

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