• Arxada
  • Bell
  • FSC
  • Hin-Tech Manufacturing
  • John Deere
  • Khulani Timber Industries
  • LESH
  • Loadtech Load Cells
  • Ponsse
  • Rance Timbers
  • Sappi
  • SAWPA
  • SSA
  • UCL Sawmill
  • Wood-Mizer
  • Wuhlf

Post: Invasion of the Polyphagous Shot Hole Borer Beetle in South Africa A Preliminary Assessment of the Economic Impacts

Pines for Pitch canker screening

Martin P de Wit, Douglas J Crookes, James N Blignaut, Z Wilhelm de Beer, Trudy Paap, Francois Roets, Carmen van der Merwe, Dave M Richardson

Abstract

Few economic assessments have been developed to inform national priorities on the management of high-impact, early-stage invasive alien species (IAS). Economic assessments are biased towards ex post assessments of the costs and benefits of control options and are in need of refinement to deal with potentially vigorous invaders with considerable uncertainty on spread and impact. The Polyphagous Shot Hole Borer (PSHB) beetle represents a potentially high-impact invasion in progress in South Africa. We approached the problem of PSHB invasion in South Africa through (i) interdisciplinary collaboration to reduce uncertainty in economic and biological parameters by defining robust ranges for model parameters and (ii) a simulation model to take account of dynamic mutualistic relations between the beetle and it’s symbiont fungus. We modelled the potential social cost of a PSHB invasion on natural forests, urban trees, commercial forestry and the avocado industry. Our results indicate that the unmitigated baseline present social cost of $27.12bn in the case of a PSHB invasion in South Africa is in the order of 1% of the country’s GDP, or expressed differently at around $50 per year per South African citizen (10-year modelling horizon using a discount rate of 6%). Most of the social costs in our model are for the removal of urban trees that die as a result of the PSHB, a result that corroborates well with findings in other regions where PSHB has invaded. We conclude that an ex ante economic assessment system dynamics model can effectively inform national strategies on IAS management. The disproportionately high impacts of a PSHB invasion on municipalities and private actors demands a revision of legislation and creation of policies pertaining to the management of biological invasions in South Africa. 

Source: FABI

This article is tagged in:
  • Afrequip
  • Latschbacher
  • Alternative Structures Logo
  • Ezigro Seedlings
  • Foresta Timber & Board
  • Husqvarna
  • Kwamahlati Training Services
  • Logmech
  • Merensky
  • Mondi
  • Those who grow alone, die alone: why transformation is strategic for the MTO Group
  • NCT
  • Pangolin
  • Patula Risk
  • Sabie Poles
  • SAFCOL
  • Saw Specialists
  • Stihl
  • Sunshine Seedling Services
  • Treated Timber Products
  • TWK
  • WoodBiz Africa
  • Afrequip
  • Latschbacher
  • Alternative Structures Logo
  • Arxada
  • Bell
  • Ezigro Seedlings
  • Foresta Timber & Board
  • FSC
  • Hin-Tech Manufacturing
  • Husqvarna
  • John Deere
  • Khulani Timber Industries
  • Kwamahlati Training Services
  • LESH
  • Loadtech Load Cells
  • Logmech
  • Merensky
  • Mondi
  • Those who grow alone, die alone: why transformation is strategic for the MTO Group
  • NCT
  • Pangolin
  • Patula Risk
  • Ponsse
  • Rance Timbers
  • Sabie Poles
  • SAFCOL
  • Sappi
  • Saw Specialists
  • SAWPA
  • SSA
  • Stihl
  • Sunshine Seedling Services
  • Treated Timber Products
  • TWK
  • UCL Sawmill
  • Wood-Mizer
  • WoodBiz Africa
  • Wuhlf

Business Directory Registration Enquiry

We are proud to have been marketing businesses large and small for the past 25 years. As our online business directory is strictly industry related only businesses related to the forestry / timber value chain will be listed.
Your Name(Required)
Once you submit your details we will get in touch with you to advise on the way forward.
This field is for validation purposes and should be left unchanged.

Subscribe To Our Newsletter

* indicates required

Invasion of the Polyphagous Shot Hole Borer Beetle in South Africa A Preliminary Assessment of the Economic Impacts

Contact Form

Name(Required)