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 PNG Conservation and Environment Protection Authority

A conservation planning study in Papua New Guinea (PNG) addresses the role of
biodiversity surrogates and biodiversity targets, in the context of the trade-offs required
for planning given real-world costs and constraints. In a trade-offs framework, surrogates
must be judged in terms of their success in predicting general biodiversity
complementarity values – the amount of additional biodiversity an area can contribute to
a protected set. Wrong predictions of low complementarity (and consequent allocation of