Nature conservation

Threatened species

Native Guava (Rhodomyrtus psidioides)



Species Action Statement

This species has been assigned to the Landscape species management stream under the Saving our Species (SoS) program.

Justification for allocation to this management stream

Rhodomyrtus psidioides has a widespread distribution and the key threat to this species is the landscape scale, wind dispersed pathogen, Myrtle Rust (Austropuccinia psidii).

Conservation status

Management objectives

This action statement aims to ensure that the species is secure in the wild in NSW and that its NSW geographic range is extended or maintained.

Species sightings and management sites across NSW

The map below displays the species’ distribution in NSW, based upon the species’ geographic range, habitat distribution or area of occupancy (to as high a resolution as available data allow, using a range of data sources).

Information about the species’ habitat and ecology is available here.

The map may also display one or more management sites where management of important populations is underway. More information is available in the tables below.

IBRA

The species occurs in the following IBRA (Interim Biogeographic Regionalisation for Australia) regions in NSW:

 
NSW North Coast
South Eastern Queensland
Sydney Basin

Proportion of the species' distribution on reserve

4% of the species' distribution occurs on reserve (within NSW National Parks and Wildlife Service estate).

Critical actions for this species

The key threats to the viability of landscape-managed species are loss, fragmentation and degradation of habitat, and widespread pervasive factors such as impacts of climate change and disease. Many of these threats are addressed by NSW planning, native vegetation, and biodiversity legislation, policy and programs including the offsets program (BioBanking, NSW Biodiversity Offsets Policy for Major Projects), Biodiversity Certification, management of environmental water and reservation under the National Parks and Wildlife Act 1974.

Threats to this species are outlined here.

The actions listed in the action toolbox are supplementary to NSW legislation, policy and programs and can be used by stakeholders, where applicable to guide management at a site, regional or state scale.

Action toolbox

Action DescriptionScale
Undertake a desktop review of species records and historical survey data and engage with consultants, NGO's and volunteer ‘spotters’ to identify rapid survey sites. State
Establish record keeping systems to document provenance for each plant. State
Propagate cuttings collected during field surveys in a controlled, disease free environment. State
Develop partnerships with botanic gardens/nursery (target low humidity/ myrtle rust free areas) to create an ‘orcharding’ and seed production program to grow and manage plants obtained from cuttings. Site
If possible, undertake seed collection for seed banking purposes. Deposit collections with the Australian Botanic Gardens - Mt Annan. Site
Select a series of stratified monitoring sites to monitor on-going myrtle rust incidence, severity and symptomology over time. If possible choose sites with pre-myrtle rust baseline data and sites with co-occurring myrtaceous species (see Carnegie et al. 2016 for potential site locations). State
Develop a long-term management plan for the eventual management/re-establishment of wild populations for the species. State
Identify weed management sites during rapid field surveys and monitor the impact of canopy gaps created by the loss of mature trees due to myrtle rust infection on weed densities. Site
Control transformer weeds (particularly vine weeds and lantana) where impacting on the species. Where appropriate use a staged approach and use methods that reduce off-target damage. Schedule regular follow up work Site
Develop an education and engagement strategy about the distribution and management requirements of the species. Include impact of various activities such as clearing, grazing, weeds and other threats as well as how to identify the species and myrtle rust infected plants (e.g. field days, plant identification workshops, information packages and other community engagement activities). Engage with sympathetic landholders and utilise peer-to peer learning with other landholders. Area, State
Encourage landholders to minimise and manage grazing impacts on the species, including the exclusion of stock through the erection of fences and provision of off-stream water points, or through reducing stocking density. Site
Support Landcare groups and other conservation networks to continue revegetation and restoration programs to support the conservation of the species. Area
Encourage landholders to consider voluntary private land conservation agreements. Site
Clearing of native vegetation reduces for the area of occupancy of Myrtaceae host species, this may have consequences for genetic diversity and their resilience to infection. Liaise with Forestry Corporation of NSW to ensure habitat is protected and forestry operation impacts are minimised. State
Plants can be more susceptible to Myrtle Rust infection after fire as the disease infects seedlings, fast growing shoots, leaves, buds, and fruits of the plants. Liaise with NSW Rural Fire Service to ensure habitat is protected and fire impacts are minimised. State
Complete rapid field surveys across the entire species range to determine rust impact, identify rust resistant populations, sites or individuals. Use standardised protocols for recording myrtle rust incidence, severity and demographic impacts. State
Undertake genetically representative germplasm collections. Collect genetic material (min. 6 individuals) from every germplasm collection site for genetic analysis of population structure and genetic representativeness of collections. Site, State

How will this species be managed?

Key management sites for this threatened species are being identified by the NSW Government and other program partners, where feasible, cost-effective and beneficial management actions can be undertaken. Currently, 1 management site has been identified for this threatened species.

Management sites

Click on column headers to sort
Site nameSite typeStatusLocal government area (LGA)
Native Guava Statewide SoS Site Contributing site (emergency)Active  

Are you or is someone you know doing conservation work for this species or in this area?

Contact us to tell us about the work. Your input will help OEH evaluate the status of threatened species and provide a broader picture of conservation work across NSW.