Banksia brownii plant louse  |  

The decline is inferred based on (c) a decline in AOO; EOO and quality of the habitat (i.e. the host plant species) due to the ongoing (e) effects of Phytophthora cinnamomi dieback and other plant diseases; and wildfire and inappropriate fire regimes; drought and climate change.
It is suspected that this decline will continue to occur due to ongoing impacts of Phytophthora cinnamomi dieback and other plant diseases; wildfire and inappropriate fire regimes; drought and 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 wildfires and drought.
Climate change future Translocate the plant louse to other populations of the host species.
Climate change future Translocate the plant louse to other populations of the host species.
Climate change future Survey for the plant louse on all known occurrences of the host species and identify possible translocation sites.
Armillaria and P. cinnamomi extremely Wildfire and inappropriate fire dieback; and had been long Continue to collect and store seeds diseased; only regimes past; present and unburnt (requires fire for of host plants for future found in area of future regeneration) translocations. 100 m Drought future Translocate the plant louse to 2015 all plant Host population size decrease other populations of the host louse located and isolation increase future species. were removed Appendix A and translocated Climate change future Survey for the plant louse on all to Snake Hill known occurrences of the host and or Warriup species and identify possible Rd. translocation sites.
Climate change future Survey for the plant louse on all known occurrences of the host species and identify possible translocation sites.
Host population size decrease and isolation increase future Climate change future Appendix A Snake Hill; National 2015 Banksia brownii plants in P. cinnamomi dieback other Continue disease hygiene practices.
The reason that we nominate Trioza barrettae for conservation status is based on the following it is dependent on another; highly threatened species (Banksia brownii) for its survival; the total area of occupancy is 4 km2 (the four subpopulations of host plant combined; that host the known populations of Trioza barrettae; occur in an area less than this) and there are only five known subpopulations of the species despite intensive searches on other likely host plants around the known populations; as well as other known populations of the host plant B. brownii along the south coast; no further specimens have been uncovered; low dispersal ability; the immediate threats to the survival of host plants such as dieback; wildfire and climate change.
The host plant; Banksia brownii; has had severe losses (local extinctions) due to inappropriate fire regimes; drought drying climate due to climate change; and Phythophthora cinnamomi infestation and other plant diseases including aerial canker (Zythiostroma sp.) and Armillaria sp. fungus.
To date all B. brownii populations are under threat from Phytophthora dieback and other diseases; inappropriate fire regimes (Barrett et al. 2008); fragmentation and a drying climate due to climate change.
Climate change a) Montane habitats in SRNP; due to drying of the habitat. b) Suspected to impact on the species in the future; and signs that B. brownii plants and the surrounding habitat have been affected by previous droughts. c) No research of climate change on the host population (or the plant louse) has been conducted to date; although we are monitoring the climate at some localities. d) Mountain populations of host plant through drying of the habitat (although all populations of host plant could be experiencing similar conditions). e) Drying of the habitat (through less rainfall) may extinguish populations of the host plant; and therefore the plant louse.
Climate change; Conserve host Range National fragmentation. population in Park; WA. adequate numbers.
Vancouver Fire; plant disease; Fire; plant disease; Climate change.
Wildfire and inappropriate fire Continue to monitor the regimes past; present and translocated host subpopulation. future Continue to monitor the plant Drought future louse s establishment on the host Host population size decrease plants to determine if the and isolation increase future translocation was successful.
Wildfires and inappropriate fire regimes a) All populations are at risk of wildfires.
Drought future Continue to collect and store seeds Host population size decrease of host plants for future and isolation increase future translocations.
Drought past; present and Continue to collect and store seeds future of host plants for future Host population size decrease Appendix A and isolation increase future translocations.
Drought future Translocate the plant louse to Host population size decrease other populations of the host and isolation increase future species.
Drought future Translocate the plant louse to Host population size decrease other populations of the host and isolation increase future species.
Wildfire and inappropriate fire Continue to monitor the regimes past; present and translocated host subpopulation. future Continue to monitor the plant Drought future louse s establishment on the host Host population size decrease plants to determine if the and isolation increase future translocation was successful.

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