Does the invasive plant, Impatiens glandulifera, promote soil erosion along the riparian zone? An investigation on a small watercourse in northwest Switzerland

Greenwood, Philip; Kuhn, N. J.

doi:10.1007/s11368-013-0825-9

Cited by 63 publications

(42 citation statements)

References 37 publications

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“…Species from this genus are reported to be facultatively mycorrhizal, having usually low mycorrhizal dependencies (Chmura and GucwaPrzepióra 2012;Tanner and Gange 2013). As AMF contribute to the maintenance of proper soil quality due to particlebinding properties of hyphae and their exudates (Smith and Read 2008), it is possible that the negative effect on AMF community induced by I. glandulifera observed in this and the aforementioned studies may in addition be a factor contributing to soil erosion caused by this species (Greenwood and Kuhn 2014).…”

Section: Discussionmentioning

confidence: 72%

Do the impacts of alien invasive plants differ from expansive native ones? An experimental study on arbuscular mycorrhizal fungi communities

et al. 2018

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No studies have compared so far the effects of alien invasive and expansive native (widespread, mono-dominant) plants on arbuscular mycorrhizal fungi (AMF). Four global or European most successful invaders (Impatiens glandulifera, Reynoutria japonica, Rudbeckia laciniata, Solidago gigantea) and two expansive plants native to Europe (Artemisia vulgaris, Phalaris arundinacea) were grown in pots to elucidate the magnitude and direction of changes in AMF abundance, species richness, and species composition in soils from under multispecies native vegetation. In a second stage, the effects of these changes on a native plant, Plantago lanceolata, were assessed. Plant species identity had larger impact on AMF abundance, species richness, and species composition as well as on P. lanceolata than origin of the species (alien vs. native). This could be due to the character of AMF relationships with the plants, i.e., their mycorrhizal status and dependency on AMF. However, the alterations induced by the plant species in soil chemical properties rather than in AMF community were the major drivers of differences in shoot mass and photosynthetic performance of P. lanceolata. We determined that the plants produced species-specific effects on soil properties that, in turn, resulted in species-specific soil feedbacks on the native plant. These effects were not consistent within groups of invaders or natives.

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Section: Discussionmentioning

confidence: 72%

Do the impacts of alien invasive plants differ from expansive native ones? An experimental study on arbuscular mycorrhizal fungi communities

et al. 2018

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“…The great amount of seeds dispersed over floodplains, together with massive seed production, contribute to the dominance of this species in areas subject to flooding. Last but not least, stands of I. glandulifera promote soil erosion (Greenwood & Kuhn, 2014) and as there are almost no other species in these stands that would stabilize the soil, erosion ensures the persistence of I. glandulifera once a site is colonized. Although the species is known to tolerate poor nutrient conditions, overall fitness and especially fertility are much lower in nutrient-poor soils than in the rich ones (Kostrakiewicz-Gierałt, 2015;Minden & Gorschl€ uter, 2016).…”

Section: Number Of Individualsmentioning

confidence: 99%

Floods affect the abundance of invasive Impatiens glandulifera and its spread from river corridors

Čuda

Rumlerová

Bruna

et al. 2017

Diversity and Distributions

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Aim Riparian habitats are amongst the most invaded ecosystems world-wide. The great abundance of invasive species in river corridors is attributed to the efficient transport of alien species' propagules and reduced competition from native plants due to regular flooding. Once an invasive species has become established, river corridors can serve as stepping stones for spread into other habitats. We have chosen the Himalayan balsam Impatiens glandulifera Royle, highly invasive annual in riparian areas, as a model for spread of invasive species from linear river corridors. Location Central Europe.Methods We mapped its distribution and recorded its abundance in over 1200 patches along four rivers in central Europe, differing in the time of balsam's introduction . The patches were characterized in terms of the distance from the riverbank, height above the river surface, degree of soil disturbance and flooding regime. ResultsThe patches at sites subject to flooding had twice as many individuals as those that were not subject to flooding, regardless of their distance from the riverbank and height above the river surface. There was a strong effect of the river identity, with river invaded 20 years ago being less infested than those invaded earlier. The distance from the riverbank at which the populations occurred differed and did not depend on river identity/residence time. The patches in tributaries were on average two times further from the bank of the main river than those located elsewhere.Main conclusions Flooding is an important factor affecting the abundance of I. glandulifera, and accounts for its spread and dominance along river corridors probably due to spreading the seeds, increasing nutrient availability and disturbing native vegetation. It is likely that the number of I. glandulifera populations will increase in the future, especially along small water courses.

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“…and the elevation of the chosen study site lies approximately 710 m a.s.l. A general description of the climate of this region is given in Greenwood and Kuhn (2014); in brief, annual precipitation is around 1100 mm with maximum monthly rainfall at ca. 91 mm, usually falling between the May to September period.…”

Section: The Study Sitementioning

confidence: 99%

The influence of terracettes on the surface hydrology of steep-sloping and subalpine environments: some preliminary findings

Greenwood¹,

Kuonen²,

Fister³

et al. 2015

Geogr. Helv.

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Abstract. Alpine and mountain slopes represent important pathways that link high-altitude grazing areas to meadows and rangelands at lower elevations. Given the often acute gradients associated with such environments, they potentially represent highly efficient runoff conveyance routes that facilitate the downslope movement of runoff and associated material during erosion events. Many such slopes host series of small steps, or "terracettes". The juxtaposition of terracettes against the natural downslope flow path of non-complex slopes leads us to hypothesise that they may influence typical hillslope processes by intercepting or capturing surface runoff. Here we report preliminary results and some tentative conclusions from ongoing work to explore this possibility. Google Earth was used to initially identify a ca. 400 m 2 well-developed terracette system situated on a west-facing slope with gradients ranging from 25 to 40 • (46 to 84 %). A digital elevation model (DEM) of the terracettes was constructed using spatial data taken from a relevant section of topographic map. The DEM was then queried using a flow-accumulation algorithm and the results displayed in a geographic information system. The output data provided "proof of concept" that terracettes can capture surface runoff. The generation of empirical data from a series of rainfall/runoff simulations performed on the same section of terracettes supports this finding. Results from both work components indicate that sections of a terracette system may intercept runoff and could act as preferential flow pathways. By contrast, some sections appeared to act as depositional sites. We cautiously predict that these areas could act as retention zones for the temporary storage of runoff-associated substances. Greater understanding of the exact influence of terracettes on surface hydrology in steep-sloping and subalpine environments could benefit the future management of grazing and rangelands in such areas.

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Does the invasive plant, Impatiens glandulifera, promote soil erosion along the riparian zone? An investigation on a small watercourse in northwest Switzerland

Cited by 63 publications

References 37 publications

Do the impacts of alien invasive plants differ from expansive native ones? An experimental study on arbuscular mycorrhizal fungi communities

Do the impacts of alien invasive plants differ from expansive native ones? An experimental study on arbuscular mycorrhizal fungi communities

Floods affect the abundance of invasive Impatiens glandulifera and its spread from river corridors

The influence of terracettes on the surface hydrology of steep-sloping and subalpine environments: some preliminary findings

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