The Cost of Invasion
We all know that there are significant economic costs associated with
invasive species impacts and control. While many people focus on the
ecological damage that invasions can produce, the economic impacts are
driving the funding for invasive species programs. There are lots of
examples of how the cost of daily activities increases following
invasion and there recently have been a couple of stories that
highlight these impacts.
Since 2007 Quagga mussels have been impacting the management of water
in the lower Colorado River. California's Metropolitan Water District
is now spending 3-5 million dollars annually to clean water delivery
systems. This economic impact could be dwarfed if the drought the area
is experiencing continues. Read More
According to a 2007 survey, feral hogs are costing the US at least $1.5
billion per year. However, the pigs are expanding their range rapidly
and the impacts are growing. To help in the fight, the US Dept. of
Agriculture has created a $20 million per year program to control the
hogs. For a great overview of the feral hog problem read this excellent
article from Scientific American Read
Tracking the spread of an Invader
Once a species is introduced how does it spread? While we may think we
have some of the answers to this question, our assumptions are usually
based on experience and observation, not measurable data. A new
research paper from Washington University in St.
Louis provides insights into the spread of one invader.
Native to Southeast Asia, the Asian tiger mosquito (Aedes albopictus
showed up in Houston, Texas, in 1985. By 1986 it had reached St. Louis,
Missouri, and Jacksonville, Florida. Thus, in a single year, the insect
moved many hundreds of miles. This is quite a feat when you consider
that these are poor flying insects and an adult will travel less than a
kilometer in it's lifetime.
To better understand the movement of this invader the researchers
turned to the new field of Landscape Genetics to see if they could
determine how the mosquito spreads. They developed a clever technique
of sampling flower vases in cemeteries which trap and hold water and
provide ideal habitat for juvenile mosquitoes. Their findings help to
shed some light on the movement of this invader and their work offers
suggestions for managers. Read More
Previously Posted on Facebook
We review news stories on a
daily basis and post stories of interest on Facebook as we find them.
However, we know that many of you are not using Facebook so here are
the links we posted during October on our Facebook pages.
******* A reminder to those who follow us on Facebook: Facebook is
limiting number of people who receive our posts. If you
have liked our Facebook page you may not be getting our posts in your
news feed. The only way to make sure you are seeing our posts is to
visit our page to see all of the content we publish.
Our Clean Angling Facebook page
where we post links that deal with fish, fishing, cleaning, boat
inspections, and other issues of interest to anglers.
Erie used to support one of the finest recreational fisheries in the
country. It is sad to see it in this condition
is a great page to follow if you are concerned about the native
Yellowstone cutthroat trout in Yellowstone Park
biologists currently use chemicals to kill non-native fish when they
want to restore native species. New Montana research shows that removal
through electrofishing may be a better alternative
On our Invasive Species Action Network Facebook page
we post all types of invasive species news including stories about all
types of invaders, policy issues and other items of interest.
you looking for a new hobby? Some divers in the Caribbean think that
spearing lionfish and hand feeding them to sharks is great sport
is seeking nominees for service on the California Invasive Species
Advisory Committee - this is a great opportunity if you want to make a
you ever wonder how invasives get to the US in the first place? Read
this story about the invaders that were discovered at a single border
crossing during a recent 3-day period
media alarms being raised about the discovery of quagga mussels in the
UK, many are wondering if there is a real cause for concern. This
article examines that question and says the concern is real
past summer much of the US became aware of the serious problem caused
by the toxic algal bloom in Lake Erie. While elevated nutrients is a
serious problem, invasives are making things worse
people are unaware that freshwater jellyfish even exist, let alone that
they can be invasives. They are established in Wisconsin and are slowly
quagga mussels have been causing problems in North America for years,
the United Kingdom has avoided their introduction - until now!
research shows that despite the massive invasive mussel infestation in
the Great Lakes, there are still pockets where native mussels are
crayfish are a well recognized threat to stream ecosystems in North
America. However, invasive crayfish also threaten European waters -
this time they come from the USA
is big trouble in New York where there is a bitter fight between those
who want to control invasive swans and those who love them
have been steadily spreading from Pennsylvania where they were first
discovered in 1998. Each year they extend their range and in the fall
they move indoors and become a noticeable pest
to these folks for finding a great new way to utilize an invasive
species! Apple snail candles could be the perfect Christmas gift.
has been fighting invasive bullfrogs since they were first discovered.
Unfortunately, they have continued to expand their range and now
inhabit more than 60 miles along the Yellowstone River
s the non-chemical treatment for zebra mussels that has a lot of
potential. In lab tests the compound has proven to be an effective
mussel killer. Now there is news about a field test in Minnesota
Our Forest Pest Fly Tying Project Facebook page
provides information for anyone concerned about the spread of forest
pest insects. Visit the page and join the conversation about the
problem and our unique fly tying program.
change will have significant impacts on invasive pests in our forests.
Read how the Southern pine beetle is threatening northern forests
now we have believed that the emerald ash borer will only attack ash
trees. However, There is new evidence that they may find other trees
Read about the new firewood campaign that
just launched to protect the Great Smoky Mountains National Park
The Clean Angling News is regularly produced by the Invasive Species
Action Network. If you have questions, suggestions or would like to
learn more about invasive species please contact us:
Invasive Species Action Network
215 East Lewis, #201
Livingston, MT 59047