Gastrolobium vestitum  |  

Climate change modelling for the south west region predicts a decline in rainfall; and some seasonal shift to summer rainfall events; which is likely to increase the potential impact of drought on the species.

These subpopulations are considered a single location as they are subject to the same threatening processes and a single fire event is likely to affect both subpopulations. (b) Continuing decline observed and projected (iii) (v) The habitat is highly threatened and has been modified by Phytophthora cinnamomi and fire.

Past; current and future Altered fire regimes Whole population Severe The species is likely to be sensitive to inappropriate fire regimes due to its preferred aspect in areas that act as refuge during wildfires.

If fire frequency is increased the soil seed bank could be depleted before juvenile plants have reached maturity.

Inappropriate fire regimes actual threat a) In both subpopulations; plants are found in areas that would be expected to act as refugia during most wildfires.

This indicates that Gastrolobium vestitum is likely to be sensitive to inappropriate fire regimes.

Increased fire intervals may cause a decline in numbers area of occupancy; with fires in short succession capable of killing live plants and rapidly depleting the soil seed bank.

Therefore inappropriate fire regimes are considered an actual threat to the species. b) It is suspected that inappropriate fire regimes and the interaction of fire and Phytophthora dieback may be contributing to the small area of occupancy of each subpopulation. c) Insufficient information d) This threat affects all subpopulations. e) It is suspected that increased fire intervals may cause a decline in numbers area of occupancy; with fires in short succession capable of killing live plants and rapidly depleting the soil seed bank.

Current; future Drought Whole population Severe This is a threat to the species if it occurs over a number of years.