(PS~) QA 1 .U686 no. 2002/2 A REVIEW OF MONITORING LOW DENSITY ANIMAL POPULATIONS Jennifer Brown Biomathematics Research Centre Department of Mathematics and Statistics University of Canterbury Private Bag 4800 Christchurch, New Zealand Email: j.brown@math.canterbury.ac.nz Report Number: UCDMS2002/2 February 2002 Department of Mathematics ISSN I 172-853 I