Aliens Among Us

1
Aliens Among Us

• Invasive Species and
• Their Influence On
• Our World

Part Two
2
(No Transcript)
3
(No Transcript)
4
Princess or Empress Tree Paulownia tomentosa
5
(No Transcript)
6
(No Transcript)
7
They should have listened to the old
adage. leaves of three, leave it be
8
(No Transcript)
9
Kudzu Pueraria montana
The original monster weed!
10
(No Transcript)
11
(No Transcript)
12
Tree of Heaven Ailanthus altissima Rapid
spread rate is shown by the appearance of many
smaller plants around the base of the original
invader.
13
(No Transcript)
14
(No Transcript)
15
Japanese Honeysuckle Lonicera japonica
16
(No Transcript)
17
(No Transcript)
18
Parrots Feather
19
Parrots feather can easily take over a pond.
It blocks sunlight from reaching the water and
reduces the amount of open water available for
fish to swim.
20
(No Transcript)
21
Veined Rapa Whelk Rapana venosa
One of our newer invasives in the Chesapeake.
22
Rapa Whelk
23
This map shows the current known distribution of
Rapa whelks in the Chesapeake Bay.
Most current map available at http//www.vims.edu/
mollusc/research/rapaw/merapmap.htm
Courtesy of Dr. Juliana Harding, Va. Institute of
Marine Science Gloucester Point,
VA Jharding_at_vims.edu
24
Northern Snakehead Channa argus
Taken from a pond in Crofton, Maryland
25
(No Transcript)
26
(No Transcript)
27
Because the Chesapeake Bay watershed is so
extensive, it is more vulnerable to
the introduction of aquatic invasives.
So what can we do to stop the spread of aliens
in our area?
28
Ways to stop the spread of invasive aliens
Use native plants in your yard or garden.
If you do use an alien plant, make sure before
you plant it that its not highly invasive.
Dont release unwanted pets or plants into the
environment.
When fishing, dont dump live bait into the
water. Or use live bait that is native to the
area.
Clean your boat trailer of plants or other
organisms after using it.
Tell other people about the problem of invasive
aliens.
29
Asian Oyster Crassostrea ariakensis
30
(No Transcript)
31
(No Transcript)