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Japanese Knotweed: An Invasive Alien Species, Slides of Ecology and Environment

Punjab Engineering College Ecology and Environment

Japanese knotweed, scientifically known as polygonum cuspidatum or fallopia japonica, is an alien invasive species that was introduced to north america in the late nineteenth century from asia. Information on the identification, geographical distribution, biology, reproduction, and control methods for japanese knotweed. That japanese knotweed is a problem due to its ability to form dense thickets that exclude native species, lack of value to wildlife, and spread through river systems, outcompeting native plants better suited to control erosion. The document also discusses methods for controlling japanese knotweed, including mechanical, chemical, and biological methods.

Typology: Slides

2012/2013

Uploaded on 01/23/2013

anushri 🇮🇳

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Download Japanese Knotweed: An Invasive Alien Species and more Slides Ecology and Environment in PDF only on Docsity! Japanese Knotweed Polygonum cuspidatum / Fallopia japonica Docsity.com What is an alien invasive species • Recently introduced (last 200 years) • Not a normal component of ecosystems • Present due to careless or deliberate human introduction Docsity.com Geological Distribution • Through most of North America • Particularly abundant in Eastern US and the coastal areas of Washington and Oregon • Canada Docsity.com Biology • Variety of soil types – loam, sand, & PH from 4.5 to 7.4 • Early spring shoots appear • Rapid growth • Flowering in late summer Docsity.com Reproduction • By vegetative means in US • Dispersal is through distribution of root material • Rhizomes in 1m2 can produce 238 new shoots Docsity.com

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