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A Biodiversity Conservation Plan for Papua New Guinea Based on Biodiversity Trade-offs Analysis

Overlap of priority areas with forest plan areas of interest

The forest plan for PNG (PNGFA 1996) shows areas designated as current production areas and areas designated as having "forest potential" or "potential for forestry production". For each province, we noted areas of apparent overlap with the priority set, noting where appropriate whether the priority area was a "must-have" (Figure 4b). Overall, there is little overlap of the priority set with current forestry areas, though we noted potential conflict in some provinces.

In Western Province, there is no overlap with major existing production areas (Makapa, Oriomo, Wawoi Guavi), but there is overlap with some of the Fly-Strickland "potential areas for future development." These priority areas are notable as must-have areas, which cannot be substituted if the biodiversity target is to be reached (Figure 4b). There is overlap of the priority set also with Balimo Fly and Semabo FMA potential forestry areas. A possible substitutable priority area overlaps with the Tapila Wipim potential production area. Large must-have members of the current priority set near the Irian Jaya border overlap with areas designated as "forest potential". A Greenpeace Forest Report (Brunton 1998) reports that a veneer mill has been built at Emeti, south of Wawoi Guavi. This area overlaps with the anticipated (15%-based target) must-have area north of the Fly River.

In Gulf Province, the large existing Wildlife Management Area overlaps with several forestry production areas, but there may be little activity in these areas at present (Brunton 1998). Additional overlaps exist, for example, where there is a riverine must-have area adjoining/overlapping with forestry production areas. In Central Province, there are complex patterns of small bits of overlap with production areas and potential production areas, while in Madang and Southern Highlands there is overlap with "forest potential" areas.

New Britain presents particular challenges, in showing moderate overlap of "logged over" areas with the current priority set. Therefore, we examined whether substitute areas might be found for some or all of these overlap areas (and this procedure may be followed in other provinces). Starting with the priority set, all priority areas within the New Britain provinces, except those determined earlier to be irreplaceable (6 areas in New Britain), were deleted from the set. This reduced set of 363 areas was then used as a starting point for a new TARGET analysis. In this analysis, all areas except those in New Britain provinces (1243 areas) were made available for selection. The initial result consisted of 384 members. However, it was not possible to reach the target. In order to do so, additional areas in New Britain were required, but these need not necessarily be logged over areas. Once these were added, the new total was 401 RMUs with a total area of 76420 square kilometers, a timber volume index equal to 92607 units, and 104 RMUs with agricultural potential. In the revised map (Figure 6), note the much reduced use of areas in New Britain to achieve the target. The possible logged-over areas that are still needed to reach the target (the green areas in the map in Figure 6) could be priority candidates for rehabilitation. This procedure could be part of an on-going evaluation and re-analysis using updated information on current status of forest plan areas.