Discussion of the distribution and abundance of living organisms and how these properties are affected by interactions between the organisms and their environment
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I recently came across a question in an assignment. It states that a species a frog lives on the coast of California and that they range in size based on location. Smaller ones are at the top, middle in the middle and larger on the bottom. What event would most likely lead to the outcome of just small ones and large ones- whipping out the middle size. Temp change? Barrier?
If there are barriers the three populations could speciate, but, especially with reptiles and amphibians size is mostly dependent on availability of food. Where food is plentiful and good, size reaches an optimum. Other factors are temperature humidity, and possibly the ability to hide more easily. In tree frogs for instance their size is limited by the size of the bromeliad pools they lay their eggs in.
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