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Appendix 4 Postulated causes of decline and likely threats

Refer to Table in Action Plan.

The vast majority of causal agents and threats remain to be confirmed, and for the purposes of this table have been simplified. Those that are particularly speculative are indicated with a question mark. A threatening process usually entails associated impacts: eg. seepage change: includes localised changes to water content of soils, bogs, or watertable; native forest logging includes roading, siltation, altered flow, changed ground water characteristics, possibly altered water chemistry, turbidity, etc; alpine development (includes sub-alpine) includes construction, roading, walking trails, slope grooming, with associated impacts of habitat destruction, degradation, fragmentation, changed drainage patterns, pollution, trampling , noise etc; cattle damage includes trampling, compaction, grazing, drainage and ground water changes, destruction of vegetation (eating or damage), associated burning and nutrient changes (fertilisers, excreta).

a: decline not confirmed

b: species which are known to bask in the sun are noted as this seems to be a characteristic common to several species in decline.

c: pigs are considered a potential threat to Geocrinia vitellina if they proliferate in the forest habitat of this species.

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