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Special Issue "Exotic Forest Pest and Pathogen Risks"

A special issue of Forests (ISSN 1999-4907). This special issue belongs to the section "Forest Ecophysiology and Biology".

Deadline for manuscript submissions: closed (10 January 2019)

Special Issue Editor

Guest Editor
Dr. Angus Carnegie

NSW Forest Science, Department of Primary Industries - Forestry, L12, 10 Valentine Ave, Parramatta 2150, Australia
Interests: forest health; biosecurity; surveillance; biological control; pest & disease management

Special Issue Information

Dear Colleagues,

Exotic forest pests and pathogens are causing increasing damage globally to native forests, plantations and urban trees. Global trade and anthropogenic travel are key drivers increasing the risk of further spread of forest insects and fungi. New pest/pathogen–host associations, host shifts, and a changing climate are also increasing the risk that exotic pests and pathogens will impact on wood and fibre production and conservation and social values of native and urban forests. Understanding the key drivers of spread, impact, and why some insects and fungi become invasive species is vital for developing strategies to reduce further spread and economic and environmental impact. Pest risk and pathway analysis can assist in prioritising activities to reduce pest and pathogen spread and impact. In this Special Issue, we aim to include original research articles and literature reviews in the areas of exotic forest pest and pathogens risk, including management strategies to limit their global and national spread and subsequent impact in plantations, urban and natural systems.

Dr. Angus Carnegie
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Forests is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.


  • invasive species
  • risk analysis
  • pathways
  • biosecurity
  • cost-benefit
  • surveillance

Published Papers (1 paper)

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Open AccessArticle Where Did You Come From? Where Did You Go? Investigating the Origin of Invasive Leptocybe Species Using Distribution Modelling
Forests 2019, 10(2), 115; https://doi.org/10.3390/f10020115
Received: 12 December 2018 / Revised: 30 January 2019 / Accepted: 30 January 2019 / Published: 1 February 2019
PDF Full-text (2571 KB) | HTML Full-text | XML Full-text | Supplementary Files
Research Highlights: We present the first attempts to model the distributions of the two cryptic and globally invasive species of Leptocybe invasa sensu lato (Fisher & LaSalle) (Hymenoptera: Eulophidae) in its purported country of origin, namely Australia. Background and Objectives: Leptocybe invasa [...] Read more.
Research Highlights: We present the first attempts to model the distributions of the two cryptic and globally invasive species of Leptocybe invasa sensu lato (Fisher & LaSalle) (Hymenoptera: Eulophidae) in its purported country of origin, namely Australia. Background and Objectives: Leptocybe invasa is an invasive eucalypt-galling wasp that spread quickly all over the world in the early to mid-2000’s, achieving significant pest status through its severe impacts on the growth and productivity of extra-limital eucalypt plantations. Until its discovery in Europe and the Middle East, the genus was undescribed, and its native range remains unclear. Molecular studies indicate the globally invasive population comprises two cryptic species with variable modes of reproduction. Collection records from Australia, the purported origin, represent only one of the invasive lineages, restricted to subtropical and tropical Queensland and northern New South Wales. To date, the original invasive lineage has not been found in Australia, despite searches over the seventeen years that it has been spreading overseas. Materials and Methods: To understand the distributions of the invasive populations, and to infer Leptocybe spp. native ranges within Australia, we used correlative niche modelling in Maximum Entropy (MaxEnt) and multivariate analysis, and created a CLIMEX model based on development rates of an invasive population. Results: We used the environmental conditions in the extra-limital range to infer possible origins, with our findings supporting the possibility that the invasive populations may have originated from different populations in Australia. Conclusions: We highlight the need for better understanding of the distribution, genetic diversity, and reproductive mode of the species within Australia. The variety of climatic niches occupied by invasive lineages of the wasp potentially present new threats to eucalypts in previously uninfested habitats. Full article
(This article belongs to the Special Issue Exotic Forest Pest and Pathogen Risks)

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