Banksia montana mealybug  |  

Therefore; a 80 population reduction from the past and into the future is inferred based on (c) a decline in area of occupancy; extent of occurrence and habitat quality of the host plant species due to fire; climate change and (e) the effects of Phytophthora cinnamomi dieback.
Geographic range The (B1) EOO and (B2) AOO are estimated to be 1km2 (or 8km (EOO and AOO; number of using IUCN standard 2kmx2km grid). locations and evidence of (a) The species is considered to be severely fragmented as it is only decline) found at two isolated subpopulations; and is considered to be at a single location because the major threats of a fire event; Phytophthora cinnamomi dieback and climate change are already and will likely continue to rapidly affect all B. montana in the eastern Stirling Ranges. (b) The number of B. montana plants in the remaining subpopulations are continuing to decline (see above).
It is suspected that this decline will continue to occur due to the ongoing impacts of fire; Phytophthora cinnamomi dieback infection and a drying climate due to climate change.
Future Climate change Entire Severe A drying climate could lead to the loss of the montane habitats in Stirling Range NP.
Climate change may also increase the frequency and intensity of wildfire.
Climate change future Collect and store seeds of host plants for future translocations.
Climate change future Collect and store seeds of host plants for future translocations.
Banksia Note this is a Wildfire and inappropriate fire strategy Last count of montana plants in translocation site but regimes future Banksia montana in moderate to healthy Continue to monitor the the required 5 years of 2012 67 mature condition a total of 27 Host population size decrease translocated host population. monitoring has not yet plants; 43 juvenile and isolation increase future plants have died since Continue to monitor the been concluded to plants translocation. determine if it is a Climate change future mealybug s establishment on the successful; self host plants to determine if the sustaining population. translocation was successful.
The reason to nominate Pseudococcus markharveyi is based on the following dependent on Critically Endangered host species (Banksia montana) for its survival; low dispersal ability; host plants have a small restricted population; the immediate threat to the host plants survival from processes such as dieback; fire and climate change.
The mealybug is considered to be a single location; because the major threats of a fire event; Phytophthora cinnamomi dieback and climate change are already and will likely continue to rapidly affect all subpopulations of B. montana in the eastern Stirling Ranges; and therefore affect both subpopulations of the mealybug.
Subpopulations of B. montana may come under threat in the future as they become further exposed to Phytophthora cinnamomim dieback; inappropriate fire regimes; wildfires and a drying climate due to climate change.
To date; these B. montana subpopulations are only found on two peaks in the SRNP (Bluff Knoll and Pyungorup Peak) and are under threat from Phytophthora dieback disease; inappropriate fire regimes (Barrett et al. 2008) and; due to their montane habitat; potentially climate change.
Climate change a) Montane habitats at both Pyungorup Peak and Bluff Knoll; due to drying of the habitat. b) Unknown.
Suspected to impact on the species in the future. c) No research of climate change on the host population (or the mealybug) has been conducted to date; although we are monitoring the climate at some localities. d) Mountain subpopulations of host plant through drying of the habitat (all subpopulations of host plant could be experiencing similar conditions). e) Drying of the habitat (through less rainfall) may extinguish subpopulations of the host plant; and therefore the mealybug.
Pyungorup Peak; Fire; plant Fire; plant Climate change.
This drying could act synergistically on other threatening processes such as wildfire and indirectly cause the extinction of the mealybug.
Wildfires and inappropriate fire regimes a) All subpopulations are at risk of wildfires.
This drying could act synergistically on other threatening processes such as wildfire and indirectly cause the extinction of the mealybug.

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