DPIRD’s Forest Health team continues to play a critical role in monitoring the State’s forests and trees for pest and disease risks and incursions. As the forest biosecurity lead in NSW, the team coordinates a statewide program that includes early-detection surveillance and response to suspect detections. They work to protect plantations (softwood and hardwood), native forests, and amenity forests.
Led by Dr Angus Carnegie, the team has experience and expertise in biosecurity surveillance and systems and processes and works closely with DPIRD’s Plant Biosecurity group. Since 2014, the Forest Health team has been conducting forest biosecurity surveillance for early detection of exotic pests and diseases that can threaten our plantations, amenity trees and native forests.
The Forest Health team conduct annual forest health surveillance of NSW's softwood and hardwood plantation estate for Forestry Corporation of NSW. This includes aerial and ground surveys mapping the extent and severity of damage from a range of damaging agents including insect pests, fungal diseases, invertebrate pests, weeds, nutritional imbalances and climatic disorders, and advising on pest management including biocontrol.
The team also undertakes stakeholder engagement to improve early detection and reporting of exotic pests. Research by Forest Health has shown that the public detect many new exotic pest arrivals, and mostly in urban areas on amenity trees. The team conduct training workshops providing information about "what to look out for" (signs and symptoms) and "how to report" with a range of stakeholders, including local councils, arborists, golf courses and botanic gardens. A specific program focuses on training Indigenous Rangers in forest health and biosecurity surveillance.
A range of fact sheets (see Protect what we love) have been developed to assist in early detection of invading exotic pests of trees. Forest Health were also instrumental in the development of a relatively new app for field diagnosis and reporting of pests and diseases (MyPestGuideTrees)
Collaboration is a key focus for the team. For example Forest Health continues to work with Plant Health Australia, the federal and state governments, and other technical experts to update the National Forest Pest Surveillance Program as part of the National Forest Biosecurity Surveillance Strategy.
The team recently had a research paper published following the detection, response, and surveillance to a suspect detection of Polyphagous shot hole borer in Sydney in 2022. Polyphagous shot hole borer and fusarium dieback are serious threats to Australia’s horticultural industries, amenity trees and native environment. Timely diagnosis determined the pest to be the closely related tea shot hole borer, not polyphagous shot holt borer. The paper describes the biosecurity response effort and highlights the importance of surveillance for early detection of invasive pests, as well as biosecurity systems for enabling a timely response, including timely and accurate diagnosis.
Ongoing surveillance and monitoring is in place to watch out for exotic pests such as polyphagous shot hole borer, which is under eradication in Perth. Importation of timber and timber products is one of the highest risks for exotic pests and diseases coming into Australia. It is likely the main factor in polyphagous shot hole borer coming into Perth. Imported timber is one of the key risk factors we consider when we identify where we do our surveys. It is important to note that any increase in imported timber and timber products would result in an increased need for surveillance at points of entry and increase the risk for exotic pests and diseases coming into our valuable forests.
Another recent example was the suspect detection of an exotic strain of myrtle rust in Sydney. DPIRD Forest Health team conducted extensive surveillance in the Sydney basin and along the east coast, with more than 130 samples collected for diagnosis. Fortunately, this was a false alarm: no exotic strain was detected, only the established Pandemic strain.
Forest biosecurity efforts continue to play a critical role in helping to keep the State’s $3.3B forestry industry healthy, enabling timber and other wood products to be harvested for the construction of homes and other products – many of which we use in our everyday lives. For more information on the Forest Health click here.