Category Archives: impacts

New paper on the impacts of Himalayan balsam


Himalayan balsam in the UK

Himalayan balsam in the UK

This paper compares Himalayan balsam (Impatiens glandulifera) in both its native and introduced ranges.

Understanding the ecology of a plant can provide insights into whether it can become a problematic weed in the introduced range, despite it being benign in the native range.

The team used morphalogical methods to compare height, leaf area and looked at the shoot ratio, natural enemy damage and the colonization of arbuscular mycorrhizal fungi in the roots.

Pollinator-mediated interactions between native plants and the invasive alien Himalayan balsam


A new paper has been published about pollinator-mediated interactions between native plants and the invasive alien species, Himalayan balsam. This PhD thesis explores whether the abundance of Himalayan balsam reduces native plant reproductive success.

Himalayan balsam and soil erosion


Population genetics of Himalayan balsam


Image of booksNew book published on the population genetics of Himalayan balsam (Impatiens glandulifera) which compares native and introduced populations.

It look at how invasive species can interfere in the structure and functioning of ecosystems, and how a better understanding of the evolution of such species will be useful when planning their management and eradication.

See the book online.

Wales’ economy counts £7bn cost of invasive plant species


Himalayan blsam

Himalayan balsam

The total costs in Wales of dealing with invasive species over the years has been put at £7bn by Wildlife Trusts Wales, the collective body for nature trusts throughout Wales.

An inquiry found that Japanese knotweed, Himalayan balsam and rhododendron were having a ‘significant negative economy and environment impact’ on parts of Wales.

See the news story >

Research points to Himalayan balsam as a soil erosion problem


Himlayan balsam root ball with soil

Himlayan balsam root ball with soil

Himalayan balsam (Impatiens glandulifera) promotes soil erosion along watercourses, according to research published in the Journal of Soil Sediments last month (Dec 2013)

Philip Greenwood and Nikolaus Kuhn from the University of Basel show that erosion along riparian zones is statistically greater where Himalayan balsam is present when compared to topographically comparable sites that support natural vegetation. 

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