Combining local, landscape, and regional geographies to assess plant community vulnerability to invasion impact

Ibáñez, Inés; Petri, Laís; Barnett, David T.; Beaury, Evelyn M.; Blumenthal, Dana M.; Corbin, Jeffrey D.; Diez, Jeffrey M.; Dukes, Jeffrey S.; Early, Regan; Pearse, Ian S.; Sorte, Cascade J. B.; Vilà, Montserrat; Bradley, Bethany A.

doi:10.1002/eap.2821

Cited by 6 publications

(4 citation statements)

References 67 publications

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“…Knowledge of the levels of invasion can help to explore how the abundance of invasive species affects species and communities and discover eventual saturation processes [1]. Shedding light on the invasibility of different ecosystems is also of great importance because it can help to identify the most vulnerable ecosystems for proactive management [51] and support further studies on which characteristics of communities influence the vulnerability against invaders [45]. As the level and the trend of invasion can vary among regions and might be different at finer scales that also influence the cost of invasion impact [47], the national-level survey must be complemented by further investigations.…”

Section: Discussionmentioning

confidence: 99%

Changes in the Occurrence of Five Invasive Plant Species in Different Ecosystem Types between 2009–2018 in Hungary

Balogh,

Kertész,

Török

et al. 2023

Land

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Modelling and analysis of spatiotemporal characteristics of plant invasion can help in mapping and predicting the spread of invasive plants. The aim of our research was to investigate the spatiotemporal variability of five common invasive plant species (Ailanthus altissima, Asclepias syriaca, Elaeagnus angustifolia, Robinia pseudoacacia, and Solidago spp.) within different land cover (ecosystem)-type categories. The basis of the study was the National Geospatial Database of Invasive Plants (NGDIP) of Hungary, and the ecosystem types of the Ecosystem Map of Hungary (EMH). The GIS-based analysis of the detailed occurrence database of the invasive species (NGDIP) and the thematic land-cover (ecosystem)-type maps (EMH) examined allow us to answer the question of in which habitat types the occurrence and distribution of the given invasive plant has stagnated, decreased, or increased between 2006 and 2018. We developed a methodology with relevant data sources and demonstrated invasion variation, which can be used for future management planning and invasive biology research. Our results show that Asclepias syriaca and Robinia pseudoacacia are increasingly threatening grasslands and are also spreading more intensively in complex cultivated areas. The occurrences of Ailanthus altissima and Asclepias syriaca are declining in built-up areas due to the increasingly extreme environmental conditions of cities or modified urban planning. The spread of Solidago spp. is increasingly common in wetlands, threatening the biodiversity of floodplain (riparian) vegetation.

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Section: Discussionmentioning

confidence: 99%

Changes in the Occurrence of Five Invasive Plant Species in Different Ecosystem Types between 2009–2018 in Hungary

Balogh,

Kertész,

Török

et al. 2023

Land

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“…In general, observational surveys such as those examined here are somewhat limited in their measure of invasion impact because they represent a single snapshot in time (i.e. impacts may lag behind the level of invader cover observed at any one point in time) are sensitive to plot-area effects (Ibáñez et al, 2023), and it is difficult to disentangle invasion impact from other environmental influences on native plant communities. Measuring how native diversity responds to invasion over time would address questions about invasion impacts, but these data are often geographically restricted (e.g., IL_CTAP) or do not yet span enough time to capture invasion impacts (e.g., NEON).…”

Section: Con Clus I On S and Data Limitati On Smentioning

confidence: 99%

Macroscale analyses suggest invasive plant impacts depend more on the composition of invading plants than on environmental context

Beaury,

Sofaer,

Early

et al. 2023

Global Ecol Biogeogr

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AimNative biodiversity is threatened by the spread of non‐native invasive species. Many studies demonstrate that invasions reduce local biodiversity but we lack an understanding of how impacts vary across environments at the macroscale. Using ~11,500 vegetation surveys from ecosystems across the United States, we quantified how the relationship between non‐native plant cover and native plant diversity varied across different compositions of invading plants (measured by non‐native plant richness and evenness) and environmental contexts (measured by productivity and human activity).LocationContinental United States.Time PeriodSurveys from 1990s‐present.Major Taxa StudiedTerrestrial plant communities.MethodsWe fit mixed effects models to understand how native plant richness, diversity and evenness varied with non‐native cover. We tested how this relationship varied when non‐native cover interacted with non‐native plant richness and evenness, and with productivity and human activity.ResultsAcross the United States, communities with greater cover of non‐native plants had lower native plant richness and diversity but higher evenness, suggesting rare native plants can be lost while dominant plants decline in abundance. The relationship between non‐native cover and native community diversity varied with non‐native plant richness and evenness but was not associated with productivity and human activity. Negative associations were strongest in areas with low non‐native richness and evenness, characterizing plant communities that were invaded by a dominant non‐native plant.Main ConclusionsNon‐native plant cover provides a first approximation of invasion impacts on native community diversity, but the magnitude of impact depended on non‐native plant richness and evenness. Relationships between non‐native cover and native diversity were consistent in strength across continental scale gradients of productivity and human activity. Therefore, at the macroscale, invasive plant impacts on native plant communities likely depend more on the characteristics of the invading plants, that is the presence of a dominant invader, than on the environmental context.

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“…Community richness is related to propagule availability, community niche space size, and competition intensity [34] and depends on climatic, edaphic, and biotic factors as well as the biogeographic history of the region, landscape, and community [29,32]. For example, invasions in cold-climate regions were shown to have a greater impact on community richness, while invasions in warm-climate regions had a greater impact on landscape-level richness [35].…”

Section: Introductionmentioning

confidence: 99%

“…At this moment, inter-regional studies of the impact of alien species are mostly performed by comparing such impacts in their native and secondary ranges [36,37]. Inter-regional assessments of the invasion consequences in different parts of the secondary range are rare [35,38].…”

Section: Introductionmentioning

confidence: 99%

Plant Species Richness and Invasional Meltdown in Different Parts of Acer negundo L. Secondary Range

Dubrovin,

Veselkin,

Gusev

2023

Forests

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To understand the alien plant invasion patterns, it is important to know if their consequences are equal in different regions, particularly in different parts of the secondary range. In this article, we estimated plant species richness in communities invaded by the North American tree Acer negundo L. in two remote regions: the Belarusian Polesia and the Middle Urals. We tested three hypotheses about: (1) decreased plant species richness in communities invaded by A. negundo; (2) presence of alien species in invaded communities—invasional meltdown hypothesis; and (3) different alien plant species richness in communities of different regions. In each region, 24 sample plots of 400 m2 were described: 12 invaded and 12 non-invaded by A. negundo. The species richness of invaded plots decreased: total richness decreased by 21%–43%; the richness of herbaceous plants decreased by 24%–43%; and woody richness decreased by 8%–44%. The proportion of alien herbs in plots invaded by A. negundo increased by 35%. This is the first, although not exhaustive, confirmation of the invasional meltdown hypothesis for communities invaded by A. negundo. Alien herbs increasingly invaded communities of the Belarusian Polesia, alien trees—communities of the Middle Urals. Thus, regional geographical and floristic conditions should be considered when assessing the invasion consequences.

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Combining local, landscape, and regional geographies to assess plant community vulnerability to invasion impact

Cited by 6 publications

References 67 publications

Changes in the Occurrence of Five Invasive Plant Species in Different Ecosystem Types between 2009–2018 in Hungary

Changes in the Occurrence of Five Invasive Plant Species in Different Ecosystem Types between 2009–2018 in Hungary

Macroscale analyses suggest invasive plant impacts depend more on the composition of invading plants than on environmental context

Plant Species Richness and Invasional Meltdown in Different Parts of Acer negundo L. Secondary Range

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