Instrusive Species by Mrs.Bragg https://padlet.com/ewelina_bragg/intrusivespecies Aquatic/Terrestrial - Plant/Animal en-us 2018-02-14 16:05:34 UTC 2025-10-27 17:13:14 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Beartoy.png sea lampreys https://padlet.com/ewelina_bragg/intrusivespecies/wish/231567477 originally found exclusively in the Atlantic near land.  the great lake hold the only land locked populations.
entered the lakes in the 1800s via man made locks and shipping canals. they prey on most species of large great lakes fish like trouts and steel-heads 
During its life span as a parasite, each lamprey can kill 40 or more pounds of fish.]]> 2018-02-14 16:17:47 UTC https://padlet.com/ewelina_bragg/intrusivespecies/wish/231567477 https://padlet.com/ewelina_bragg/intrusivespecies/wish/231571024 2018-02-14 16:23:30 UTC https://padlet.com/ewelina_bragg/intrusivespecies/wish/231571024 Garlic mustard! https://padlet.com/ewelina_bragg/intrusivespecies/wish/231761170 1. When was it introduced and why?
-introduced in 1868, discovered in Long Island, NY
-introduced mainly for medicinal purposes and for food

2. From what country did it come?
-originated from/native to: Europe, western and Central Asia, northwestern Africa, Morocco, Iberia, the British isles, northern Scandinavia, northeastern Pakistan and western China 

3. What effect has it had on the environment to which it was introduced?
-garlic mustard does not need much sunlight to grow, so it thrives in North America’s forests. If the plants become too dense, they can divert light, take up growing space, and use up valuable water and nutrients that other native plants need to survive

4. Have there been problems because of its introduction and have attempts been made to control it?
-the plant produces a root that inhibits the growth of important fungi in the soil 
-the plant has poisonous leaves that kill the native butterfly larvae that feed off the plant 
-most efforts to kill the plant is done manually by pulling out the root
  • -if the root, a part of the root, or a seed is left behind it WILL grow back!
]]> 2018-02-15 00:55:36 UTC https://padlet.com/ewelina_bragg/intrusivespecies/wish/231761170 Cytisus scoparius- Scotch broom https://padlet.com/ewelina_bragg/intrusivespecies/wish/232349533 1. introduced in the 1800's to the US as an ornamental or possible live stock fodder
2. From Europe and North Africa
3. Forms dense stands which crowd out native species and destroy wildlife habitat
4. Invades river systems, shrublands, forest margins, low canopy. Attempts to control them have been done through methods such as cutting, hand pulling/digging, chopping, burning, etc.]]> 2018-02-16 14:49:35 UTC https://padlet.com/ewelina_bragg/intrusivespecies/wish/232349533 intrusive species - green crab https://padlet.com/ewelina_bragg/intrusivespecies/wish/232355840 1. when was it introduced and why?
reached california in the mid-1800s, and first arrived in the cape cod reguon and then spread. reason is unknown as to why it was spread, but it is believed that it came in with ballast water from ships.
2. from what country did it come?
it is said to have come from norway & the british isles
3. what effect has it had on the environment to which it is introduced?
since it is tolerant of most environmental conditions it has no problem fitting in. it feeds on californian mussels and shellfish, decreasing the population immensely.
4. has there been problems because of it and have attempts been made to control it?
yes, the population of molluscs has decreased significantly and in response to this the government of california has monitored its species, but has not taken to any biological or chemical means to control it. 

]]> 2018-02-16 15:00:46 UTC https://padlet.com/ewelina_bragg/intrusivespecies/wish/232355840 Black Rat https://padlet.com/ewelina_bragg/intrusivespecies/wish/233583959 1. the black rat was introduced into Europe by the first century AD by getting around through boats and vessels. 
2. the species originated from tropical Asia. 
3. the black rat has been introduced to about every region that can support it and has caused dramatic population declines of birds, reptile and other small vertebrae species around the world 
4. some problems that the black rat has caused is the success that it has as a species of living with other rat species and this has caused overpopulation for the surrounding environment's. one solution to help lower the rapid increase of black rat is the use of poisons that would be used on things the rats generally like to eat and then killing them but this practice has seen some negative side effects such as harming other life that could come in contact. 

]]> 2018-02-21 02:46:08 UTC https://padlet.com/ewelina_bragg/intrusivespecies/wish/233583959 Quagga mussel https://padlet.com/ewelina_bragg/intrusivespecies/wish/233588690 1. It was introduced in 1989 into lake Erie. They are a  result of water discharge from transoceanic ships that carried mussels. 
2. The mussel originated from  the Dnieper River drainage of Ukraine
3. Quaggas are water filterers, removing phytoplankton and other small foods from the water. By removing the phytoplankton, quaggas  decrease the food source for zooplankton, therefore altering the food web.
4. The mussel continues to spread throughout north america polluting its water systems. Some areas have turned to banning the use of transported boats to avoid carrying over the mussel. We have also discovered that the yellow perch will sometimes eat the mussel. Other than this not much has been done to prevent the mussel from spreading.
]]> 2018-02-21 03:20:44 UTC https://padlet.com/ewelina_bragg/intrusivespecies/wish/233588690 The Eastern grey squirrel (Sciurus carolinensis) https://padlet.com/ewelina_bragg/intrusivespecies/wish/233763637 Originally introduced by Great Britain in the 1870s because it was seen as a fashionable addition to estate, the eastern grey squirrel depletes populations of other native squirrels by out-competition and disease (parapoxvirus), and displaces native birds of their nesting habitat, eating the birds’ eggs and nestlings.

Economically, Eastern grey squirrels cost homeowners repairs due to digging up of lawns and gardens, chewing through electrical wires, eaves and shingles, and nesting in roofs, attics, and chimneys.

In order to prevent the squirrel from attacking, don’t feed , keep all compost, garbage and pet food covered, and use squirrel-proof bird feeders
]]> 2018-02-21 14:50:11 UTC https://padlet.com/ewelina_bragg/intrusivespecies/wish/233763637 https://padlet.com/ewelina_bragg/intrusivespecies/wish/233792137 2018-02-21 15:30:41 UTC https://padlet.com/ewelina_bragg/intrusivespecies/wish/233792137