Hi Bracha. You might halving the number of traps using drift fences (barrier or interceptors), forming a cross whose center is the trap. This model eliminates therefore the trap in the plot of 0.25, and begins with a trap with interceptors in 1 square meter plot. In the literature there are some studies using this method. I do not know if my contribution will serve you. I have used an experimental scheme in which the plot of 1 square meter has a pitfall in the center and four interceptors crosswise to the vertices of the square. As the area increases, some interceptors inland areas are eliminated, saving material and installation time. If you want more details, you can email me. Best Jorge
Jorge Mederos López www.caribbeancraneflies.com http://canopycollserola.wordpress.com On Mon, Mar 7, 2016 at 12:44 PM, Bracha Schindler <[email protected] > wrote: > We are conducting an experiment with different sized plots (0.25, 1, 4, > and 16 square meters) and would like to determine if plot size has an > effect on arthropod diversity using pitfall traps. It wouldn't be feasible > to have the number of traps proportional to plot size, as that would mean > 64 traps in the largest plots. We are looking for suggestions for a > sampling design that will capture the plot effect size with a smaller > number of traps per plot. > Thanks, > Bracha Schindler > >
