JAMES AND WALLIS: STUDY OF MAMMALS AT LAKE WAlKARElTI A COMPARATIVE STUDY OF THE EFFECTS OF INTRODUCED MAMMALS ON NO THO FAGUS FOREST AT LAKE WAIKAREITI
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چکیده
Comparable sites \verc exam incd on Rahui Jsland. Lake Waikareiti, which is frct; of introduced mammals, and on the adjacent mainland, "which is not. The forest understorcy density'in NotllOfaglls fllscaf N. mem.iesii forest has been reduced on the mainland. In the mainland forest there arc fewer plants of Pscudopanax and Coprosma f;pp. and more p!ants of Dl'acophyllllln PY1'111/1idoleand Dic/.;sol1ia lalla/a. Regeneration of Not'lOflH~IlS mell:.ie,vii, Phylfocladlls glll/lClis. and Quilliinia lIclIlijo!ia is greater in the mainland forest and rcgeneratio'n of PcdOCarpll.'i spp. and N. fllsca is occurring. The vegetation cover bclQ\v 6 in. is Jess on ~he mainland but there is nc. difference in litter and topsoil depths. Changes in the mainland forest composition arc attributed to the efTects of the mammals.
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