Killing it Softly: Girdling as an Efficient Eco-friendly Method to Locally Remove Invasive<i>Acer negundo</i>

Merceron, Nastasia; Lamarque, Laurent J.; Delzon, Sylvain; Porté, Annabel J.

doi:10.3368/er.34.4.297

Cited by 16 publications

(8 citation statements)

References 36 publications

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“…The ash-leaved maple in older stands indicate A. negundo does stabilize at a low level, showing little need to undertake removal actions for this species. Removal of trees results in creating gaps which would be quickly filled by the invasive maple as it reproduces effectively from both shoots and rhyzomes [75]. The seedlings of ash-leaved maple are characterized by high tolerance and quick growth rate in the gaps [76].…”

Section: Discussionmentioning

confidence: 99%

You Can’t See the Woods for the Trees: Invasive Acer negundo L. in Urban Riparian Forests Harms Biodiversity and Limits Recreation Activity

et al. 2019

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Public access to high quality green environments has become a key issue for city managers and a matter of environmental justice. Urban pressures on ecosystem remnants may act to favor the expansion of some invasive species in cities. Whilst the negative impacts of invasive species on ecosystem function is well documented, little is known about how invasive species influence the use of green space by people. Here, we examined one of the few remnants of urban riparian forests in Europe, the Vistula river valley in Warsaw, which has recently become an attractive recreation site. Despite their high ecological value, the poplar and willow forests have been increasingly taken over by the invasive tree species Acer negundo. We examined the status of the invasion process and the relationship between recreational ecosystem services and the characteristics of the tree stands—tree species, tree density, and age and NDVI values. We found the willow forest to be more susceptible to invasion by A. negundo than the poplar forest, which was revealed in significantly higher share of the maple individuals and their greater volume per unit area. Ash-leaved maples also prevailed in numbers in younger stands (<10 years) than in older ones. The presence of A. negundo affected biodiversity, resulting in decreased undergrowth density and biodiversity expressed in number of species. The use intensity by the public, assessed on the basis of soil compaction of existing informal tracks, as revealed by GLM analysis, was related to volume of invasive maple and distance from the main track. This study highlights the need to integrate invasive species management into green infrastructure planning and management.

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Section: Discussionmentioning

confidence: 99%

You Can’t See the Woods for the Trees: Invasive Acer negundo L. in Urban Riparian Forests Harms Biodiversity and Limits Recreation Activity

et al. 2019

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“…These patterns suggest that the future of the Rhône dike field forests will look very different from today and that the sustainability of local native communities may be compromised through changes in biotic interactions and environmental conditions (Vilà et al, 2011). Specifically, these two species may have different impacts on biodiversity (Campagnaro et al, 2018), different management strategies (Merceron et al, 2016;Vítková et al, 2020) and varying responses to ongoing global changes (Camenen et al, 2016).…”

Section: Influence Of Multiple Drivers On Dike Field Forest Structurementioning

confidence: 99%

Long-term river management legacies strongly alter riparian forest attributes and constrain restoration strategies along a large, multi-use river

Janssen

Stella

Räpple

et al. 2021

Journal of Environmental Management

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Many terrestrial ecosystems have undergone profound transformation under the pressure of multiple human stressors. This may have oriented altered ecosystems toward transient or new states. Understanding how these cumulative impacts influence ecosystem functions, services and ecological trajectories is therefore essential to defining effective restoration strategies. This is particularly the case in riverine ecosystems, where the profound alteration of natural disturbance regimes can make the effectiveness of restoration operations questionable. Using the case study of legacy dike fields, i.e., area delimited by longitudinal and lateral dikes, along the regulated Rhône River, we studied the impacts of long-term channelization and flow regulation on environmental conditions and riparian forests attributes along a 200km climatic gradient. We characterized the imprint of human stressors on these forests by comparing the dike field stands to more natural stands in both young and mature vegetation stages. Across four reaches of the river between Lyon and the Mediterranean Sea, we found that channelization consistently promoted high rate of overbank sedimentation and rapid disconnection of dike field surfaces from the channel. The rapid terrestrialisation of dike field surfaces, i.e., the process by which former aquatic areas transition to a terrestrial ecosystem as a result of dewatering or sedimentation, fostered a pulse of riparian forest regeneration in these resource-rich environments that differs from more natural sites in structure and composition. Within the dike fields, older pre-dam stands are dominated by post-pioneer and exotic species, and post-dam stands support large, aging pioneer trees with a largely exotic understory regeneration layer. These patterns were associated with differences in the relative surface elevation among dike fields, whereas species shifts generally followed the river's longitudinal climate gradient. To enhance the functionality of these human-made ecosystems, restoration strategies should target the reconnection of dike fields to the river by dismantling part of the dikes to promote lateral erosion, forest initiation and community succession, as well as increasing minimum flows in channels to improve connection with groundwater. However, since a river-wide return to a pre-disturbance state is very unlikely, a pragmatic approach should be favoured, focusing on local 3 actions that can improve abiotic and biotic function, and ultimately enhancing ecosystem services such biodiversity, habitat, and recreation opportunities.

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“…Ash-leaved maple (Acer negundo L.) is an invasive tree in the territory of Northern Eurasia that is currently colonising disturbed and semi-natural territories 1,2,3,4 . A. negundo actively renews itself in the urbanised forests of the Middle Urals 5,6 , but the invasion of ash-leaved maple is dangerous for some types of plant communities 7,8 .…”

Section: Introductionmentioning

confidence: 99%

High Canopy Cover of Invasive Acer Negundo L. Affects Ground Vegetation Diversity

Веселкин

Dubrovin

Pustovalova

2021

Preprint

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We assessed the link between canopy cover degree and ground vegetation diversity under alien ash-leaved maple (Acer negundo) and other (native or alien) tree species. We investigated urban and suburban forests in the large city of Yekaterinburg, Russia. Forests were evaluated on two spatial scales. Through an inter-habitat comparison we recorded canopy cover and plant diversity among 13 sample plots of 20 × 20 m where A. negundo dominated and 13 plots where other tree species dominated. In an intra-habitat comparison, we recorded canopy cover and ground vegetation diversity among 800 sample plots measuring 1 m2 in the extended urbanised forest, which featured abundant alien (308 plots) and native trees (492 plots). We observed decreased diversity among vascular ground plant species by 40% (inter-habitat) and 20% (intra-habitat) in areas dominated by A. negundo compared to areas dominated by native tree and shrub species. An abundance of A. negundo was accompanied by increased canopy cover. We found a negative relationship between canopy cover and the number of understory herbaceous species. Thus, the interception of light and the restriction of its amount for other species is a main factor supporting the negative influence of A. negundo on native plant communities.

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Killing it Softly: Girdling as an Efficient Eco-friendly Method to Locally Remove InvasiveAcer negundo

Cited by 16 publications

References 36 publications

You Can’t See the Woods for the Trees: Invasive Acer negundo L. in Urban Riparian Forests Harms Biodiversity and Limits Recreation Activity

You Can’t See the Woods for the Trees: Invasive Acer negundo L. in Urban Riparian Forests Harms Biodiversity and Limits Recreation Activity

Long-term river management legacies strongly alter riparian forest attributes and constrain restoration strategies along a large, multi-use river

High Canopy Cover of Invasive Acer Negundo L. Affects Ground Vegetation Diversity

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