An ecologist catches 25 leopard frogs one night in a potholemarsh. These are marked with a color dye and released. Three dayslater a second trapping period is conducted – 10 leopard frogs arecaught without a mark and 12 are caught that carry a mark.
a) Using the Lincoln-Petersen Index, what is the estimate ofpopulation size for the leopard frog population?
b) Suppose some of the frogs caught the first period do notdisperse from the release site before the second period, andtherefore are easier to capture than unmarked frogs. What effectwill this have on the population estimate?
Suppose that the mark gradually washes off over time, so thatsome marks are gone in three days. What effect will this have onthe population estimate?
