You Have Studied a Population of Garter Snakes to Understand

Multiple Choice

You have studied a population of garter snakes to understand how recruitment changes over time.When the density of snakes was at an average of 5 per 50 square meters recruitment was low.When that density increased to 20 per 50 square meters recruitment was also low.However,when densities were near 12 garter snakes per 50 square meters recruitment was at its highest.This is an example of a ___________ curve.

A) Calibration
B) Dome-shaped net-recruitment
C) Type I
D) Sigmoidal