一般影响
希尔等人(2001)报告说：此藤可以爬上森林最高的树木，形成一个高密度，遮光冠层，把所有的植被抑制在它下面。葡萄叶铁线莲(Clematis vitalba)大量蔓生后，它的叶和茎的重量会压垮树木，使原本健康的森林，被葡萄叶铁线莲盖住残留的树桩和树干“。但是的奥格尔等人(2000)观察到的葡萄叶铁线莲会爬到树冠，但无法爬上直径较大的树，除非直径较小的树木和灌木提供垫脚石。他们的研究结果(泰哈皮研究保留区，纽西兰)报告说：被葡萄叶铁线莲感染后，很多种的树木和灌木已大为减少。奥格尔等表示，这不仅失去是一个单一的冠层树种，25%左右的林下树木和灌木树种已经遗失。
地点特有的影响：New Zealand 
栖地改变: Hill et al (2001) report that, "Vines can climb the tallest forest trees, forming a dense, light-absorbing canopy that suppresses all vegetation beneath it. C. vitalba can be so vigorous that the weight of foliage and stems breaks the supporting trees, reducing once-healthy forest to a low, long-lived thicket of vines scrambling over stumps and logs". However Ogle et al (2000) observe that the vines ascend to the canopy of forest but are unable to climb large diameter emergent trees unless shrubs and smaller trees provide a series of ‘stepping stones’ to the crown of tall trees. Their study findings (study area Taihape reserve , New Zealand) indicate that the numbers and variety of understorey trees and shrubs that have been severely reduced following the infestation of C. vitalba correlates with observations of the growth habit of C. vitalba. Ogle et al showed e.g. that not a single canopy tree species had been lost from the Taihape Reserves though 25% or so of the understorey trees and shrubs species had been lost. Poland
竞争: Several species that do not tolerate shade are reportedly affected. The scale of impact of this species is moderate Washington (United States (USA))
栖地改变: The Washington State Noxious Weed Control Board (2003) states that, "On Orcas Island in San Juan County, the impacts of C. vitalba are visible and spreading as this species climbs over the forested areas."
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