Modeling the Spatial Distribution of<i>Xylella fastidiosa</i>: A Nonstationary Approach with Dispersal Barriers

Cendoya, Martina; Hubel, Ana; Conesa, David; Civera, Antonio Vicent

doi:10.1094/phyto-05-21-0218-r

Cited by 4 publications

(1 citation statement)

References 42 publications

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“…This is the case when geographic barriers are present, or control measures are implemented to contain disease spread. Using the outbreak in Alicante, Spain, as a case study, X. fastidiosa occurrence data were analyzed through stationary and nonstationary models (Cendoya et al, 2022). The nonstationary models considered a cordon sanitaire surrounding the infested area, where host plants were removed and measures applied to impede disease spread.…”

Section: Epidemiological Models To Assist Outbreak Response Programme...mentioning

confidence: 99%

Recent research accomplishments on early detection of Xylella fastidiosa outbreaks in the Mediterranean Basin

Velasco-Amo

Civera²,

Zarco‐Tejada³

et al. 2023

Phytopathol. Mediterr.

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Xylella fastidiosa is a major transboundary plant pest, causing severe socioeconomic impacts. Development of preventive strategies and methods for surveillance, early detection, monitoring, and accurate diagnosis of X. fastidiosa and its vectors, are keys to preventing the effects of this plant pathogen, and assist timely eradication or optimisation of containment measures. This review focuses on approaches for early detection of X. fastidiosa in the Mediterranean Basin, including development of climatic suitability risk maps to determine areas of potential establishment, and epidemiological models to assist in outbreak management through optimized surveillance and targeted responses. The usefulness of airborne hyperspectral and thermal images from remote sensing to discriminate X. fastidiosa infections from other biotic- and abiotic-induced spectral signatures is also discussed. The most commonly used methods for identifying X. fastidiosa in infected plants and vectors, and the molecular approaches available to genetically characterize X. fastidiosa strains, are described. Each of these approaches has trade-offs, but stepwise or simultaneous combinations of these methods may help to contain X. fastidiosa epidemics in the Mediterranean Basin.

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Section: Epidemiological Models To Assist Outbreak Response Programme...mentioning

confidence: 99%

Recent research accomplishments on early detection of Xylella fastidiosa outbreaks in the Mediterranean Basin

Velasco-Amo

Civera²,

Zarco‐Tejada³

et al. 2023

Phytopathol. Mediterr.

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Modeling spatial dependencies of natural hazards in coastal regions: a nonstationary approach with barriers

Chaudhuri

Paz

Serra

et al. 2023

Stoch Environ Res Risk Assess

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Natural hazards like floods, cyclones, earthquakes, or, tsunamis have deep impacts on the environment and society causing damage to both life and property. These events can cause widespread destruction and can lead to long-term socio-economic disruption often affecting the most vulnerable populations in society. Computational modeling provides an essential tool to estimate the damage by incorporating spatial uncertainties and examining global risk assessments. Classical stationary models in spatial statistics often assume isotropy and stationarity. It causes inappropriate smoothing over features having boundaries, holes, or physical barriers. Despite this, nonstationary models like barrier model have been little explored in the context of natural disasters in complex land structures. The principal objective of the current study is to evaluate the influence of barrier models compared to classical stationary models by analysing the incidence of natural disasters in complex spatial regions like islands and coastal areas. In the current study, we have used tsunami records from the island nation of Maldives. For seven atoll groups considered in our study, we have implemented three distinct categories of stochastic partial differential equation meshes, two for stationary models and one that corresponds to the barrier model concept. The results show that when assessing the spatial variance of tsunami incidence at the atoll scale, the barrier model outperforms the other two models while maintaining the same computational cost as the stationary models. In the broader picture, this research work contributes to the relatively new field of nonstationary barrier models and intends to establish a robust modeling framework to explore spatial phenomena, particularly natural hazards, in complex spatial regions having physical barriers.

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Zoning strategies for managing outbreaks of alien plant pests in the European Union: a review

et al. 2023

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Managing outbreaks of alien plant pests is key to preserving biodiversity and safeguarding crop production. Zoning strategies are applied by plant health authorities to tailor measures to the risk of spread in relation to distance from the outbreak epicentre and the biology of the pest. Here we synthesize information on outbreak management to evaluate the diversity and consistency of such approaches. We collected information on the zoning strategies of 121 outbreaks of 25 plant pests in the European Union (EU). According to the organism’s presence and the measures applied, five zones were distinguished: an infested zone (83% of cases), a buffer zone (76%), a clear-cutting zone (28%), an eradication zone (1%) and a containment zone (1%). Infested zones and buffer zones were adjacent non-overlapping zones, while the clear-cutting zone, eradication zone or containment zone was within either the infested zone or buffer zone. A combination of infested and buffer zones was used in 51% of recorded cases. Measures differed within different zones. Destruction of infested plants in the infested zone was done in 78% of the cases, while surveillance was always applied in the buffer zone. Regulation of an organism at EU level led to a convergence of zoning strategies applied by different member states. Regulations often prescribed the greatest widths used before regulations were issued. Further analyses are needed to explore the efficacy of different strategies including the costs of each strategy. Such analyses should combine insight from practice with bio-economic modelling.

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Modeling the Spatial Distribution ofXylella fastidiosa: A Nonstationary Approach with Dispersal Barriers

Cited by 4 publications

References 42 publications

Recent research accomplishments on early detection of Xylella fastidiosa outbreaks in the Mediterranean Basin

Recent research accomplishments on early detection of Xylella fastidiosa outbreaks in the Mediterranean Basin

Modeling spatial dependencies of natural hazards in coastal regions: a nonstationary approach with barriers

Zoning strategies for managing outbreaks of alien plant pests in the European Union: a review

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