Twenty eight years after my trip to Costa Rica, I was sitting in my office in Kansas with the cold fall wind finding its way through the large cracks in my north-facing window. The Costa Rica trip was why I decided to become an ecologist. An ecologist is a scientist who studies plants and animals, as opposed to an environmentalist who is an activist to protect the environment. I am both, but chose this path instead of becoming a molecular biologist because of my tropical ecology experiences as a young undergraduate. Sitting behind a computer was a far cry from my romantic notion of a tropical field ecologist.
My friend and colleague Matt Whiles phoned me from his office at Southern Illinois University to ask for some help with a research project he had on frogs in Panama. He had described his research on effects of population declines of frogs previously and I was already interested. Now he needed help in areas that I was a specialist in to further examine the ecological effects of frog extinctions in Central America.
Matt explained once again how frogs were disappearing in the cool, high-elevation rain forests of Panama. He had been telling this story for a while, and the fact that the frogs were going was just part of the issue. Matt was worried about what would happen to the rest of the stream organisms when the frogs were gone. At this point hearing about the species extinctions was like hearing of the death of the aunt of a friend. It was about someone you never met. It was too bad, but there was a distance between me and the actual event.
Matt mentioned that algae populations had exploded in streams where the frogs had already vanished. He hypothesized the loss of frogs was responsible for the changes in the streams because the frogs laid their eggs in or near the streams and their tadpoles grew up in the streams.
From a scientific point of view this was very interesting to me; algae are central to how many streams work. We started talking experimental design and who else would be involved. We settled on a method to analyze ecosystem functions that we had earlier used successfully on tallgrass prairie streams in the Flint Hills of Kansas and started discussing travel dates and research plans. In retrospect this is how many scientists deal with tragedy, they compartmentalize and study it-- perhaps to avoid personalizing it.
Tuesday, June 30, 2009
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