CA U I G E MA KI G A A IO ACKI G A SMA OW , , SOU E OO OOK n x n v l nd I AUS A ASIA
BRENT M. STEPHENSON1, EDWARD O. MINOT1 and PENNY OLSEN 2
1Ecology Section, Institute of Natural Resources, Massey University, Private Bag 11-222, Palmerston North, New Zealand 2Behavioural Ecology Group, Division of Botany and Zoology, Australian National University, Canberra, Australian Capital Territory, Australia 0200
Received: 25 March 1998