invasive plants in delaware
DESCRIPTION
Invasive Plants in Delaware. What is an invasive plant?. Not native – does not naturally occur in a specific area. Aggressive , creates problems for native plants, animals and natural communities. Has very few, often no predators in its new location. 45 o. 30 o. 30 o. 45 o. - PowerPoint PPT PresentationTRANSCRIPT
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Invasive Plants in Delaware
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What is an invasive plant?
Aggressive, creates problems for native plants, animals and natural communities
Has very few, often no predators in its new location
Not native – does not naturally occur in a specific area
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Where do they come from?
45o
30o
45o
30o
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Grows quickly
Produces many seeds and/or spreads by underground root systems (rhizomes)
Produces biological toxins that suppress the growth of other plants
Hardy, out-competes natives
Usually non-native
Few predators
What makes a plant invasive?
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How do they get here?
ornamental landscapes and gardens
conservation projects, erosion control
pallets and packing material
crop seed
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Why should we be concerned?Ecological Impacts
alter soil chemistry
fire hazards
alter hydrology
changes in plant communities and biodiversity
competition with native plants
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English Ivy
Hedera helix
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Japanese Honeysuckle
Lonicera japonica
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Photo by David Cappaert
Multiflora Rose
Rosa multiflora
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Phragmites
Phragmites australis
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