The middle of October Ken and his crews started their annual visit to One Tree Island on Australia's Great Barrier Reef. More Videos on youtube:
Nov 1: #11. Narration by Julia Pongratz, Kenny Schneider & Ken Caldeira http://www.youtube.com/watch?v=H8hoFpBhtNM
Nov 5: Caldeira writes (from the GBR) We are still shooting some video most days, but nobody has time to edit it. Long Cao helped us post two video clips that I edited yesterday night. One focuses on Ben Kravitz and the other on Lilian Caldeira.
This year Kenny is keeping the sea cucumbers at high CO2 levels to see if the dissolution in their guts increases or whether the organisms control their internal chemistry; if so, then dissolution in such micro-environments would not increase with ocean acidification.
Our main experiment is a "first in the world" experiment to bring seawater chemistry back closer to what it was pre-industrially in the unconfined natural environment to see whether the reef grows faster. Today, we got the first tantalizing evidence that our alkalinity enrichment experiment is producing more rapid coral growth. We have only 7 more days of experiments, and it is a bit of a question whether we will have enough data to make a convincing case, but except for some initial technical and logistical difficulties, the experiment is now running smoothly. It is so nicely organized that watching everybody collect their samples is like looking like a ballet. All round, kudos go to Kenny Schneider for his excellent job organizing this expedition.
You can follow us to understand effects of ocean acidification on a coral reefs by watching our video research diary: http://www.youtube.com/user/CarnegieGlobEcology
Nov 12: Caldeira reports: We got some nice shots of our laboratory operation on One Tree Island. The lab is the heart of the operation, where the chemistry of the water samples is measured.
I think this video is a good one. It shows real science at work:
http://www.youtube.com/watch?v=1aDYGdeKkD0 (with Emily Shaw, Tanya
Rivlin, Jack Silverman, and Kenny Schneider).
Here is another new one, showing us out at our experimental site.
http://www.youtube.com/watch?v=rIiUZAN8TJQhttp://www.youtube.com/watch?v=rIiUZAN8TJQ (with Julia Pongratz, Kate Ricke, Kenny Schneider and Ken Caldeira)
Nov 19: Caldeira writes "Please find a nice new video, a tour of the One Tree Island Research Station by station manager Russell Graham.
" I also encourage you to take a look at another of the good ones, a fly-on-the-wall look at the chem lab with Kenny Schneider, Tanya Rivlin, Jack Silverman, and Emily Shaw.
" Lastly, I updated Ben's video with a higher resolution version (needed for the scenes involving walking).
Nov. 28: Kenny Schneider presented a summary of the Group's work on One Tree Island with great photos. They started with the following Projects: Determine the borders of the Lagoon & its profile, study sea cucumbers, map the Island & measure the sediments.
DGE Internal Seminars
Nov. 7: Abhishek Chatterjee, a graduate student working with Michalak spoke about his work estimating sources and sinks of CO2 using ensemble filters. His title was Ensemble-based data assimilation for CO2 source-sink inference. He is a PhD candidate at the Univ. of Michigan, Ann Arbor.
Nov 14: Matt Colgan (grad student with Asner) presented his latest results on how to improve LiDAR biomass estimates using a tree-level, object oriented approach. This involves predicting harvested mass of individual trees using automatically generated tree crowns from LiDAR maps, which in turn improves the accuracy of linking biomass patterns to topographic and climatic gradients.
Nov. 28: Prof. Paul Moorcroft from Harvard University's Department of Organismic and Evolutionary Biology described how he is developing a predictive Science of the Biosphere. He is modeling how Climate Change & CO2 will affect the composition, structure & functioning of terrestrial ecosystems. The HET Model is closer to the data than the AGG model.
Nov. 29: Scot Miller, a PhD student from Harvard Univ. was introduced by Anna Michalak. Scot is studying the sources and locations of nitrous oxide (N2O) & methane emissions in the US. Both are potent green-house gasses. N2O is formed by the denitrification of manure and excess fertilizers and also from most wetlands during the warmer seasons. He showed maps of large areas of Canada and the US corn belt where emissions are greatest. Methane escapes during coal mining and from moist dumps or landfills. Scot is particularly interested in testing the best models for predicting & measuring both gases.