It’s Wednesday night, July 23, 2014. I am sitting with Cleo Chou – a Ph.D candidate and my summer mentor – on the porch of La Selva Biological Research Station in Costa Rica. We are taking slow, musing bites of leftover birthday cake and talking through a problem.
Among other things, while in the field, we’ve been taking photos of the leaves of Cleo’s study trees. The goal? To determine the leaves’ size using a jerry-rigged computer analysis. I had taken advantage of our one non-field day this week to use the lab’s leaf area meter to check the accuracy of the computer program. Unfortunately, it turns out our calculated areas aren’t very accurate at all, and we don’t know why. Does the digital camera warp the photos? Is there something wrong with how we’re scaling them in the processor? The nocturnal forest chorus of cicadas and frogs is a soothing background to a worrisome problem. Every day we work in the field, more photos accumulate. It will already be an analysis marathon, but now we are additionally pursued by the specter of inaccuracy, the fear that our fastidious, hard-won photo samples will not tell us anything meaningful at all. Continue reading Field Notes from Costa Rica: The Best and Hardest Part