From Left: Nattasha, mentor Nathan Rank, graduate student Sonja Otto, mentor Eric Berlow. (photo E. Dalhhoff)
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Final presentation at Barcroft Station
Abstract The effects of elevation
and temperature on the willow beetle were studied at the Sierra Nevada Mountains of California. We study the correlation between adult abundance and elevation at three different drainages; Bishop Creek, Big Pine Creek and Rock Creek. We used the survey
method to measure the abundance of adult beetle and abundance of predators.
The results prove that elevation is an important factor that determines
the abundance and distribution of adult beetle and its specialist predators.
In the second part of the project we study the effects of temperature
on eggs development. We placed temperature loggers to measure the daily temperature of the site to and the results prove our hypothesis that said
eggs had better development at warmer temperatures.