Fallopia japonica var. japonica
(Japanese knotweed)
Plants
Exotic

17 results for Fallopia japonica var. japonica (Japanese knotweed)

Impact ID Scientific Name Impact Type Study Type Study Location Impact Description Reference
4674 Fallopia japonica var. japonica Habitat Alteration Experimental Field Japanese knotweed, Fallopia japonica, invasions could degrade terrestrial habitat quality... 37068
4675 Fallopia japonica var. japonica Competition Anecdotal N/A Japanese knotweed, Fallopia japonica, is a successful competitor. The foliage forms dense... 37069
4676 Fallopia japonica var. japonica Infrastructure Anecdotal N/A The height to which Japanese knotweed, Fallopia japonica, grows can reduce visibility on... 37069
4677 Fallopia japonica var. japonica Infrastructure Anecdotal N/A In winter when the vegetative growth of Japanese knotweed, Fallopia japonica, has died... 37069
4678 Fallopia japonica var. japonica Infrastructure Anecdotal N/A In times of flooding, dense stands of Japanese knotweed, Fallopia japonica, on the... 37069
4679 Fallopia japonica var. japonica Property Value Anecdotal N/A In times of flooding, dense stands of Japanese knotweed, Fallopia japonica, on the... 37069
4680 Fallopia japonica var. japonica Navigation Anecdotal N/A In times of flooding, dense stands of Japanese knotweed, Fallopia japonica, on the... 37069
4681 Fallopia japonica var. japonica Property Value Anecdotal N/A Decaying plant material from In times of flooding, dense stands of Japanese knotweed, Fallopia... 37069
4682 Fallopia japonica var. japonica Human Health Anecdotal N/A Decaying plant material from In times of flooding, dense stands of Japanese knotweed, Fallopia... 37069
4683 Fallopia japonica var. japonica Infrastructure Anecdotal N/A Japanese knotweed, Fallopia japonica, shoots are able to push up through asphalt, damaging... 37069
4688 Fallopia japonica var. japonica Habitat Alteration Experimental Field Japanese knotweed, Fallopia japonica, invasion decreased the cover of most plant species... 37070
4689 Fallopia japonica var. japonica Competition Experimental Laboratory All non-zero concentrations of Polygonum cuspidatum resulted in significant losses of... 37071
4690 Fallopia japonica var. japonica Habitat Alteration Experimental Field The stand of Japanese knotweed, Polygonum cuspidatum, had a significant impact decreasing... 37073
4691 Fallopia japonica var. japonica Habitat Alteration Observational Field Japanese knotweed, Fallopia japonica, has reduced the diversity and abundance of native... 37077
4692 Fallopia japonica var. japonica Habitat Alteration Observational Field Blocks of riparian vegetation with higher coverage of Japanese knotweed, Reynoutria spp.... 37078
4751 Fallopia japonica var. japonica Habitat Alteration Observational Field Louisiana Waterthrush showed a significant negative correlation in abundance with presence of... 37102
4752 Fallopia japonica var. japonica Competition Observational Field Native plant species richness and cover lower in Japanese knotweed, Fallopia japonica... 37068

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Citation information: U.S. Geological Survey. [2022]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/21/2022].

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