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Unformatted text preview: Removal of Invasive
With W.R.V. April 1, 2007
Environmental Conservation, M. Stephens
By, Karen Gale It takes one person at a time to make
difference. Non-native invasive (NNI) plants are exotic species
that are also ecological pioneers and colonizers. They
are plants that, once introduced, can quickly establish
themselves in ecologically disturbed communities.
Non-native invasive species typically displace native
flora because they have faster growth rates, efficient
dispersal mechanisms, and tolerance of a wider range
of conditions. Because they are not normally found
in the region where they have been introduced, nonin
native invasive plants often lack natural predators and
diseases that control their populations in their native
environments. Ron shows us the degradation of the
under-story by humans.
under-story Why Remove Exotic Invasive
Species? To preserve wildlife habitat.
Invasive plants have become recognized in recent
years as a major threat to the integrity of natural
Invasive species can alter natural ecological processes
by reducing the interactions of many species to the
interactions of only a few species.
According to a 1996 report by the Nature
Conservancy, invasive species have contributed to the
42 percent population decline of threatened and
endangered species in the U.S. Conserve our Planet
Conserve Non-native species threaten two-thirds of
endangered species world wide, and are
considered by some to be second most
important threat to biodiversity after habitat
Vine species like English ivy and kudzu
shading out and pulling down trees that had
stabilized steep slopes, creating an erosion
problem; On our way to battle Invasive
Species Things that further degrade natural
habitat Man made bridges blot out the sun inhibiting
the growth of plant species.
Overpopulation of deer can further damage
trees and native plant species.
Human waste and debris also damages wildlife
and There are many different methods to
invasive removal. Pull seedlings and small or shallow-rooted plants
when soil is moist.
Dig out larger plants, including the root systems.
Use a spading fork or weed wrench for trees or
Herbicides: We do not recommend this method
with volunteers. Herbicides should be used only as
a last resort – in cases where the infestation cannot
be controlled through other means. Ron showing us causes of habitat
loss. Battle waged against Invasive
Species Japanese Knotweed
Multi Rose Me helping to
watershed. W.R.V. planted trees
W.R.V. What can we do?
What Increase awareness in your watershed of the
problems associated with non-native invasive
Help citizens see firsthand the impact of their
efforts can have to improve habitat in your
Encourage and empower citizens to participate
in other activities aimed at improving water
quality in their watershed. ...
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