Landscape Effects on the Spread of Invasive Species

O’Reilly-Nugent, Andrew; Palit, Rakhi; Lopez-Aldana, Angelica; Medina-Romero, Margarita; Wandrag, Elizabeth M.; Duncan, Richard P.

doi:10.1007/s40823-016-0012-y

Cited by 39 publications

(25 citation statements)

References 57 publications

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“…Furthermore, landscape transformation and heterogeneity have an effect on invasive species in different stages of invasion and fragmentation of the landscape may facilitate the spread of invasive species (With 2002). Habitat heterogeneity intensifies invasion and increases dispersal (O'Reilly-Nugent et al 2016;Dukes and Mooney 1999), and we have recorded a positive relationship with flowering phenology, SLA, height and seed mass of invasive neophytes. However, invasive neophytes with multiple pollination vectors (i.e.…”

Section: General Patternsmentioning

confidence: 55%

“…Alien plants that have often been introduced for their aesthetic features as ornamental plants can attract pollinators (colorful and fragrant flowers) and divert them from native plants (Bjerknes et al 2007;Muñoz and Cavieres 2008). The majority of tropical and temperate plants are insect-pollinated (Ollerton et al 2011), invasive neophytes, though, are primarily insect or self-pollinated.…”

Section: Differences In Non-invasive Vs Invasive Neophytesmentioning

confidence: 99%

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Trait–environment relationships of plant species at different stages of the introduction process

Milanović¹,

Knapp²,

Pyšek³

et al. 2020

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The success of alien plant species can be attributed to differences in functional traits compared to less successful aliens as well as to native species, and thus their adaptation to environmental conditions. Studies have shown that alien (especially invasive) plant species differ from native species in traits such as specific leaf area (SLA), height, seed size or flowering period, where invasive species showed significantly higher values for these traits. Different environmental conditions, though, may promote the success of native or alien species, leading to competitive exclusion due to dissimilarity in traits between the groups. However, native and alien species can also be similar, with environmental conditions selecting for the same set of traits across species. So far, the effect of traits on invasion success has been studied without considering environmental conditions. To understand this interaction we examined the trait–environment relationship within natives, and two groups of alien plant species differing in times of introduction (archaeophytes vs. neophytes). Further, we investigated the difference between non-invasive and invasive neophytes. We analyzed the relationship between functional traits of 1,300 plant species occurring in 1000 randomly selected grid-cells across Germany and across different climatic conditions and land-cover types. Our results show that temperature, precipitation, the proportion of natural habitats, as well as the number of land-cover patches and geological patches affect archaeophytes and neophytes differently, regarding their level of urbanity (in neophytes negative for all non-urban land covers) and self-pollination (mainly positive for archaeophytes). Similar patterns were observed between non-invasive and invasive neophytes, where additionally, SLA, storage organs and the beginning of flowering were strongly related to several environmental factors. Native species did not express any strong relationship between traits and environment, possibly due to a high internal heterogeneity within this group of species. The relationship between trait and environment was more pronounced in neophytes compared to archaeophytes, and most pronounced in invasive plants. The alien species at different stages of the invasion process showed both similarities and differences in terms of the relationship between traits and the environment, showing that the success of introduced species is context-dependent.

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Section: General Patternsmentioning

confidence: 55%

Section: Differences In Non-invasive Vs Invasive Neophytesmentioning

confidence: 99%

Trait–environment relationships of plant species at different stages of the introduction process

Milanović¹,

Knapp²,

Pyšek³

et al. 2020

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“…Highly biodiverse communities increase the probability of biological control and functional redundancy by local species through the presence of predators and competitors that deal with the pest . In addition, landscape configuration is essential for the regulation of invasive species, by modulating the spread and growth of the population, which depend on landscape structural and compositional traits . Highly compositional and structural landscape heterogeneity influences the success of an invasive species, by increasing the availability of habitat types for other species (predators and competitors) and hindering the dispersion capacity of the invasive species across the landscape .…”

Section: Discussionmentioning

confidence: 99%

“…In addition, landscape configuration is essential for the regulation of invasive species, by modulating the spread and growth of the population, which depend on landscape structural and compositional traits . Highly compositional and structural landscape heterogeneity influences the success of an invasive species, by increasing the availability of habitat types for other species (predators and competitors) and hindering the dispersion capacity of the invasive species across the landscape . Hence, we recommend that agroecosystems management is focused on maximizing the ecological diversity of communities and landscape heterogeneity in zones that are or will be potentially affected by B. hilaris .…”

Section: Discussionmentioning

confidence: 99%

Spatial global assessment of the pest Bagrada hilaris (Burmeister) (Heteroptera: Pentatomidae): current and future scenarios

Carvajal

Alaniz

Núñez‐Hidalgo

et al. 2018

Pest Management Science

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“…The persistence of any spatially distributed population essentially depends on two processes: local growth and connectivity between populations (Hastings 2014). These basic processes also underlie the spatial progression of biological invasions, and numerous theoretical discussions and applied models of invasive spread have focused on further refining, measuring and simulating them (Savage and Renton 2014;O'Reilly-Nugent et al 2016). We follow a conceptual framework of plant invasions proposed by Smith et al (2012) that considers two aspects of spatial risk: (a) the potential, time-independent environmental suitability of a site, which is driven by the local processes of plant establishment (i.e.…”

Section: Introductionmentioning

confidence: 99%

Rapid spatial risk modelling for invasion management under uncertainty

Froese

Hamilton²

2017

Syme, G., Hatton MacDonald, D., Fulton, B. And Piantadosi, J. (Eds) MODSIM2017, 22nd International Congress on Modelling and Si

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Across the globe, invasive alien plant species are a major threat to biodiversity and agricultural industries. Invasive plant spread is an ongoing process that plays out at different spatiotemporal scales. When an invasive 'weed' emerges in a new country, region or landscape, there is often a distinct lag phase during which population increase and invasive spread is slow. Rapid response by biosecurity managers to new incursions may bring the greatest opportunities with regard to facilitating eradication or effective containment as well as minimizing long-term control costs and negative impacts. An important consideration for allocating finite management resources is the spatial distribution of invasion risk. However, hard data is rarely available to assess risk, and decisions are consequently made under considerable uncertainty. We developed a flexible, spatially-explicit methodology for rapidly modelling invasion risk using Bayesian networks and Geographic Information Systems (GIS). In this well-established modelling framework, the key processes of invasion and the major risk variables affecting these processes are represented as a Bayesian network. GIS analysis is used to link each risk variable contained in the model to one or several spatial data proxies and to map model predictions. Here, we present a simplified implementation that can be used rapidly and under limited knowledge, using the case study of Mexican bean tree (Cecropia spp.) in North Queensland. We modelled two aspects of invasion risk: (a) the potential, time-independent environmental suitability of a site for plant establishment and persistence, and (b) the actual susceptibility of suitable sites to propagule introduction from source infestations recorded during annual 'detection periods'. We derived risk variables and spatial data proxies via desktop research and used simple mathematical functions to model the interplay between risk variables, invasion processes (establishment, persistence and propagule pressure), and invasion risk (suitability and susceptibility). We also evaluated the ability of our model to accurately predict the observed spatial progression of the Cecropia spp. invasion in North Queensland by validating mapped annual susceptibility against subsequently observed infestations. The majority of North Queensland's Wet Tropics was predicted to be potentially highly or moderately suitable for Cecropia spp. invasion. Actual susceptibility to invasion in a given fruiting season is more restricted due to dispersal constraints from source infestations. In each evaluated detection period, modelled susceptibility was a good predictor of actual Cecropia spp. detections in subsequent years. Annual susceptibility maps may be used for allocating surveillance and containment resources around existing infestations. Low-frequency long-distance dispersal or human-mediated translocations were not captured in the model. Further automation of risk factor / spatial proxy selection and data pre-processing may make our methodology for rapidly modell...

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Landscape Effects on the Spread of Invasive Species

Cited by 39 publications

References 57 publications

Trait–environment relationships of plant species at different stages of the introduction process

Trait–environment relationships of plant species at different stages of the introduction process

Spatial global assessment of the pest Bagrada hilaris (Burmeister) (Heteroptera: Pentatomidae): current and future scenarios

Rapid spatial risk modelling for invasion management under uncertainty

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