Invasion of the North American sand dropseed (Sporobolus cryptandrus) – A new pest in Eurasian sand areas?

Török, Péter; Schmidt, Dávid; Bátori, Zoltán; Aradi, Eszter; Kelemen, András; Hábenczyus, Alida Anna; Díaz, Contreras; Tölgyesi, Csaba; Pál, Róbert W.; Balogh, Nóra; Tóth, Edina; Matus, Gábor; Táborská, Jana; Sramkó, Gábor; Laczkó, Levente; Jordán, S.; McIntosh-Buday, A.; Kovacsics-Vári, Gergely; Sonkoly, Judit

doi:10.1016/j.gecco.2021.e01942

Cited by 5 publications

(5 citation statements)

References 42 publications

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“…cover as high as 10% compared to only 0.5% cover in 1967 (Kleiner & Harper, 1977). The Sporobolus species common in the study area ( S. cryptandrus ) is a known early colonizer species following drought and disturbance due to high germination rates and persistent seed banks, which are also suggested mechanisms for the rise of S. cryptandrus as a non‐native invasive species of concern in Eurasia (Török et al, 2021). Taken together, the rhizomatous growth form ( P. jamesii ) and high seed production/germination rates ( Sporobolus spp.)…”

Section: Discussionmentioning

confidence: 99%

“…cryptandrus) is a known early colonizer species following drought and disturbance due to high germination rates and persistent seed banks, which are also suggested mechanisms for the rise of S. cryptandrus as a non-native invasive species of concern in Eurasia (Török et al, 2021). Taken together, the rhizomatous growth form (P. jamesii)…”

Section: High Resilience Of Perennial Grasses In a Never-grazed Grass...mentioning

confidence: 99%

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Ecosystem resilience to invasion and drought: Insights after 24 years in a rare never‐grazed grassland

Duniway,

Finger‐Higgens,

Geiger

et al. 2023

Global Change Biology

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Understanding the resilience of ecosystems globally is hampered by the complex and interacting drivers of change characteristic of the Anthropocene. This is true for drylands of the western US, where widespread alteration of disturbance regimes and spread of invasive non‐native species occurred with westward expansion during the 1800s, including the introduction of domestic livestock and spread of Bromus tectorum, an invasive non‐native annual grass. In addition, this region has experienced a multi‐decadal drought not seen for at least 1200 years with potentially large and interacting impacts on native plant communities. Here, we present 24 years of twice‐annual plant cover monitoring (1997–2021) from a semiarid grassland never grazed by domestic livestock but subject to a patchy invasion of B. tectorum beginning in ~1994, compare our findings to surveys done in 1967, and examine potential climate drivers of plant community changes. We found a significant warming trend in the study area, with more than 75% of study year temperatures being warmer than average (1966–2021). We observed a native perennial grass community with high resilience to climate forcings with cover values like those in 1967. In invaded patches, B. tectorum cover was greatest in the early years of this study (1997–2001; ~20%–40%) but was subsequently constrained by climate and subtle variation in soils, with limited evidence of long‐term impacts to native vegetation, contradicting earlier studies. Our ability to predict year‐to‐year variation in functional group and species cover with climate metrics varied, with a 12‐month integrated index and fall and winter patterns appearing most important. However, declines to near zero live cover in recent years in response to regional drought intensification leave questions regarding the resiliency of intact grasslands to ongoing aridification and whether the vegetation observations reported here may be a leading indicator of impending change in this protected ecosystem.

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Section: Discussionmentioning

confidence: 99%

Section: High Resilience Of Perennial Grasses In a Never-grazed Grass...mentioning

confidence: 99%

Ecosystem resilience to invasion and drought: Insights after 24 years in a rare never‐grazed grassland

Duniway,

Finger‐Higgens,

Geiger

et al. 2023

Global Change Biology

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“…In Hungary, S . cryptandrus has been detected along busy dirt roads and connecting disturbed areas such as fallows and trash dumps, but it is also invading intact grasslands (Török et al, 2021). The species was accidentally introduced to the Kiskunság region, Hungary, by a shepherd coming home from the United States.…”

Section: Introductionmentioning

confidence: 99%

“…Sporobolus cryptandrus is a prolific seed producer (Brown, 1943) and is one of the most drought-tolerant graminoids in North American short-grass prairie (Wan et al, 1993). In Hungary, S. cryptandrus has been detected along busy dirt roads and connecting disturbed areas such as fallows and trash dumps, but it is also invading intact grasslands (Török et al, 2021). The species was accidentally introduced to the Kiskunság region, Hungary, by a shepherd coming home from the United States.…”

Section: Introductionmentioning

confidence: 99%

Increasing abundance of an invasive C₄grass is associated with larger community changes away than at home

Hábenczyus

Tölgyesi

Pál

et al. 2022

Applied Vegetation Science

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Aim:We evaluated stands of the invasive grass, Sporobolus cryptandrus in its native North American range and its non-native European range, where it is a recent invader.Our aim was to reveal how the species' increasing abundance affects functional diversity and the ecosystem service-provisioning capacities of plant communities in both ranges.Location: Sand grasslands in the Kiskunság, Hungary and in Montana, USA.Methods: All vascular plant species and their relative abundances were recorded in a stratified random manner in 1 m × 1 m plots in each range, using the following cover categories of Sporobolus as strata: 1%-25%, 26%-50%, 50%-75%, and 75%-100%.The functional characteristics of the plant communities in the two continents were compared. We performed comparisons of the communities both with and without including Sporobolus.Results: Increasing Sporobolus cover resulted in a lower functional diversity and species richness, reduced average specific leaf area and increased the height of whole plant communities in both ranges but these effects were significantly stronger in the non-native stands. Sporobolus also negatively affected the cover of insect-pollinated plant species and the proportion of native perennials, switching the rest of the community from perennial-dominated to annual-dominated. In plant communities without Sporobolus, increasing Sporobolus cover led to a higher specific leaf area and seed mass in both ranges, but average height was decreasing along the Sporobolus abundance gradient in the native range, whereas it was increasing in the non-native range. Conclusions:The spread of Sporobolus, away from its native range, leads to the impoverishment of host communities and compromises the biomass and floral resourceprovisioning capacity of the vegetation to higher trophic levels. Tackling the spread of this new invader should therefore be a priority task.

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“…An increasing body of evidence confirms that IEPs markedly reduce the species richness of invaded plant communities around the world ( Vilà et al., 2011 ; Bernard-Verdier and Hulme, 2015 ; Carboni et al., 2021 ). However, the invasion of exotic plants can also enhance species richness of the invaded plant communities where the ‘weak invaders’ establish at low density ( Sax et al., 2005 ; Maron et al., 2014 ; Török et al., 2021 ). Similarly, IEPs modify the physical and chemical environment of the soil, which impacts on the composition and structure of the vegetation community in ways different from the original native plants ( Schimel et al., 1991 ; Sardans et al., 2017 ).…”

Section: Introductionmentioning

confidence: 99%

An exotic plant successfully invaded as a passenger driven by light availability

Liu

Li²,

Sui³

et al. 2022

Front. Plant Sci.

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Invasive exotic plant species (IEPs) are widely distributed across the globe, but whether IEPs are drivers or passengers of habitat change in the invaded spaces remains unclear. Here, we carried out a vegetation and soil survey in 2018 and two independent field experiments (Pedicularis kansuensis removal in 2014 and 2015, and fertilization experiment since 2012) and found that the invasive annual P. kansuensis was at a disadvantage in light competition compared with perennial native grasses, but the successful invasion of P. kansuensis was due to the sufficient light resources provided by the reduced coverage of the native species. Conversely, nitrogen enrichment can effectively inhibit P. kansuensis invasion by increasing the photocompetitive advantage of the native species. sP. kansuensis invasion did not reduce species richness, but did increase plant community coverage, productivity and soil nutrients. Furthermore, the removal of P. kansuensis had little effect on the plant community structure and soil properties. Our results suggest that the passenger model perfectly explains the benign invasive mechanism of P. kansuensis. The invasion “ticket” of P. kansuensis is a spare ecological niche for light resources released by overgrazing.

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Invasion of the North American sand dropseed (Sporobolus cryptandrus) – A new pest in Eurasian sand areas?

Cited by 5 publications

References 42 publications

Ecosystem resilience to invasion and drought: Insights after 24 years in a rare never‐grazed grassland

Ecosystem resilience to invasion and drought: Insights after 24 years in a rare never‐grazed grassland

Increasing abundance of an invasive C₄grass is associated with larger community changes away than at home

An exotic plant successfully invaded as a passenger driven by light availability

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Invasion of the North American sand dropseed (Sporobolus cryptandrus) – A new pest in Eurasian sand areas?

Cited by 5 publications

References 42 publications

Ecosystem resilience to invasion and drought: Insights after 24 years in a rare never‐grazed grassland

Ecosystem resilience to invasion and drought: Insights after 24 years in a rare never‐grazed grassland

Increasing abundance of an invasive C4grass is associated with larger community changes away than at home

An exotic plant successfully invaded as a passenger driven by light availability

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Increasing abundance of an invasive C₄grass is associated with larger community changes away than at home