Blue-spotted tree monitors (Varanus macraei) are found on the Indonesian island of Batanta. Describe how you could use the mark-release-recapture method to estimate the number of Varanus macraei on the island. (4 marks)

1.Capture/collect sample, mark and release 2.Method of marking does not harm/distinguish lizard 3.Leave sufficient time for lizards to (randomly) distribute (on island) before collecting a second sample  4.(Population =) number in first sample × number in second sample divided by number of marked lizards in second sample / number recaptured