The Victorian naturalist . angroves cut. Ash constitutes about4% of above-ground wet-plant weight^,so 29,891 kgm. of ash would be ob-tained by burning 747,275 kgm. of wetwood. AttiwelP calculated the above-ground biomass of Westernport Baymangroves as averaging kgm. per square metre, so this indicates a cut-over area of 83,963 square these calculations are ap-proximate, but they are a guide to theextent of mangrove cutting at thisperiod. The area cut, about hec-tares, is only a small proportion of thetotal mangrove area, but it is hkelythat it was concentrated in area
The Victorian naturalist . angroves cut. Ash constitutes about4% of above-ground wet-plant weight^,so 29,891 kgm. of ash would be ob-tained by burning 747,275 kgm. of wetwood. AttiwelP calculated the above-ground biomass of Westernport Baymangroves as averaging kgm. per square metre, so this indicates a cut-over area of 83,963 square these calculations are ap-proximate, but they are a guide to theextent of mangrove cutting at thisperiod. The area cut, about hec-tares, is only a small proportion of thetotal mangrove area, but it is hkelythat it was concentrated in areasaccessible from existing squatters sta-tions and favoured shipping channels,so that within these sectors cuttingwould have been extensive. It couldbe the cause of the disappearance ofsectors of mangrove shown at theInlets and Red Bluff on Smythes mapof the Bay in 18429. Plate 1: Haydons sketchof his hut onFrench themicrofilm heldin the NationalLibrary,Canberra, withthe permissionof JudithWhitlock. i/.
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Keywords: ., bookcentury1800, bookdec, booksubjectnaturalhistory, bookyear1884
