Strategic removal of host trees in isolated, satellite infestations of emerald ash borer can reduce population growth

Fahrner, Samuel; Abrahamson, Mark; Venette, Robert C.; Aukema, Brian H.

doi:10.1016/j.ufug.2017.03.017

Cited by 11 publications

(13 citation statements)

References 55 publications

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“…An estimated three million ash trees can be found in the seven-county Minneapolis-St Paul ("Twin Cities") metropolitan area. The first known EAB infestation in the Twin Cities was in St Paul in 2009, but it is believed that EAB arrived as early as 2004 [41].…”

Section: Methodsmentioning

confidence: 99%

Lessons from the Frontline: Exploring How Stakeholders May Respond to Emerald Ash Borer Management in Europe

Marzano

Hall

Dandy

et al. 2020

Forests

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The emerald ash borer (EAB) has caused extensive damage and high mortality to native ash trees (Fraxinus; sp.) in North America. As European countries battle with the deadly pathogen Hymenoscyphus fraxineus (ash dieback) affecting European ash (Fraxinus excelsior), there is concern that the arrival of EAB will signal the demise of this much-loved tree. While Europe prepares for EAB it is vital that we understand the social dimensions that will likely influence the social acceptability of potential management measures, and experiences from the USA can potentially guide this. We draw on differing sources including a literature review, documentary analysis, and consultation with key informants from Chicago and the Twin Cities of Minneapolis and St. Paul. In this paper, we focus on EAB management responses that involve chemical applications, tree felling and replanting, and biological control, and assess their likely social acceptability to stakeholders based on the perceived risks and benefits. Benefits involve protecting specific ash trees and slowing the spread of EAB across the landscape. Risks include collateral harm from insecticide use on human and environmental health, financial costs and liabilities, and the effectiveness of each approach. Biological control and replacing ash with other species are likely to be largely acceptable across contexts and stakeholder groups but pre-emptive felling and insecticide application could be more problematic if seeking widespread social acceptance. Based on our observations from the evidence collected we offer suggestions for approaching EAB management in Europe with a focus on improving prospects of social acceptability. Strong engagement will be necessary to establish the relevance and reason for using different management approaches and to build awareness and trust.

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Section: Methodsmentioning

confidence: 99%

Lessons from the Frontline: Exploring How Stakeholders May Respond to Emerald Ash Borer Management in Europe

Marzano

Hall

Dandy

et al. 2020

Forests

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“…We used historical observations from the urban EAB infestation closest to Winnipeg in Minneapolis–St. Paul, Minnesota, USA (Fahrner, Abrahamson, Venette, & Aukema, 2017; Osthus, 2017) – to predict the distance‐dependent probabilities of EAB spread (see details in Yemshanov et al. (2019a)).…”

Section: Methodsmentioning

confidence: 99%

“…We used a conventional approach to estimate the probabilities of EAB spread to other sites as a function of distance from the infested locations (Kovacs et al, 2010;Leung, Cacho, & Spring, 2010;Prasad et al, 2010). We used historical observations from the urban EAB infestation (Fahrner et al, 2017;Venette, 2019) from the Minneapolis-St. Paul region. From these estimates, we calculated the probabilities of EAB infestation in each site.…”

Section: Estimates Of Eab Spreadmentioning

confidence: 99%

“…closest to Winnipeg in Minneapolis-St. Paul, Minnesota, USA(Fahrner, Abrahamson, Venette, & Aukema, 2017;Osthus, 2017) -to predict the distance-dependent probabilities of EAB spread (see details inYemshanov et al (2019a)). The pest is believed to have entered the Winnipeg area approximately 7 years ago, so we used the observations of EAB spread in Minneapolis-St. Paul over the same timeframe.We divided the area into a grid of 1 × 1 km sites, and estimated the proportion of infested ash trees in each site based on municipal tree inventories (City of Minnepolis, 2017; Koch, Ambrose, Yemshanov,…”

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Optimal planning of multi‐day invasive species surveillance campaigns

Yemshanov

Haight

MacQuarrie

et al. 2020

Ecol Sol and Evidence

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1. Multi-day survey campaigns are critical for timely detection of biological invasions. We propose a new modelling approach that helps allocate survey inspections in a multi-day campaign aimed at detecting the presence of an invasive organism. 2. We adopt a team orienteering problem to plan daily inspections and use an acceptance sampling approach to find an optimal surveillance strategy for emerald ash borer in Winnipeg, Manitoba, Canada. The manager's problem is to select daily routes and determine the optimal number of host trees to inspect with a particular inspection method in each survey location, subject to upper bounds on the survey budget, daily inspection time, and total survey time span. 3. We compare optimal survey strategies computed with two different management objectives. The first problem minimizes the expected number of survey sites (or area) with undetected infestations. The second problem minimizes slippage-the expected number of undetected infested trees in sites that were not surveyed or where the surveys did not find infestation. 4. We also explore the impact of uncertainty about site infestation rates and detection probabilities on the surveillance strategy. Accounting for uncertainty helps address temporal and spatial variation in infestation rates and yields a more robust surveillance strategy. The approach is generalizable and can support delimiting survey programs for biological invasions at various spatial scales. K E Y W O R D S biological invasions, emerald ash borer, multi-day survey campaigns, optimal routing, optimization, pest detection, surveys and sampling 1 INTRODUCTION Delimiting surveys are among the most common tools used to monitor biological invasions, but they require costly and coordinated efforts over extended periods of time (

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“…Because EAB was discovered only recently, we had little information about the spread of EAB in Winnipeg, so we estimated the likelihoods of introduction over distance using historical observations of the closest urban EAB infestation to Winnipeg in Minneapolis—St. Paul (Twin Cities), Minnesota [55, 56]. Evidence suggested that the pest entered the Winnipeg area six years ago, hence we used records of EAB from the Twin Cities for a six-year period starting from the oldest detection.…”

Section: Methodsmentioning

confidence: 99%

Managing biological invasions in urban environments with the acceptance sampling approach

et al. 2019

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Detections of invasive species outbreaks are often followed by the removal of susceptible host organisms in order to slow the spread of the invading pest population. We propose the acceptance sampling approach for detection and optional removal of susceptible host trees to manage an outbreak of the emerald ash borer (EAB), a highly destructive forest pest, in Winnipeg, Canada. We compare the strategy with two common delimiting survey techniques that do not consider follow-up management actions such as host removal. Our results show that the management objective influences the survey strategy. The survey-only strategies maximized the capacity to detect new infestations and prioritized sites with high likelihood of being invaded. Comparatively, the surveys with subsequent host removal actions allocated most of the budget to sites where complete host removal would minimize the pest’s ability to spread to uninvaded locations. Uncertainty about the pest’s spread causes the host removal measures to cover a larger area in a uniform spatial pattern and extend to farther distances from already infested sites. If a decision maker is ambiguity-averse and strives to avoid the worst-case damages from the invasion, the optimal strategy is to survey more sites with high host densities and remove trees from sites at farther distances, where EAB arrivals may be uncertain, but could cause significant damage if not detected quickly. Accounting for the uncertainty about spread helps develop a more robust pest management strategy. The approach is generalizable and can support management programs for new pest incursions.

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Strategic removal of host trees in isolated, satellite infestations of emerald ash borer can reduce population growth

Cited by 11 publications

References 55 publications

Lessons from the Frontline: Exploring How Stakeholders May Respond to Emerald Ash Borer Management in Europe

Lessons from the Frontline: Exploring How Stakeholders May Respond to Emerald Ash Borer Management in Europe

Optimal planning of multi‐day invasive species surveillance campaigns

Managing biological invasions in urban environments with the acceptance sampling approach

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