Scholars,
This week we are discussing aquatic diversity. One of the major impacts that can affect biodiversity of an aquatic ecosystem are Invasive Species. For this weeks post I want you to find a news article discussing an invasive species that has infected an area.
Happy Hunting
Mr. D
Subscribe to:
Post Comments (Atom)
Dannielle Nadine Hobbs
ReplyDelete3rd Period
The Northern Snakehead is a predatory fish that is extremely invasive. These fish are long and cylindrical with enlarged scales on their heads (hence the name snakehead). They have a large mouth with a protruding lower jaw that contains canine-like teeth. Snakehead fish are native to Asia and Africa. However, they can now be found in California, Maryland, Maine, Florida, Hawaii, Massachusetts, and Rhode Island. Their presence within the states threatens native fish and wildlife resources and the economic sectors that depend on them. Experts believe that some entered into the United States waters via releases by aquarium owners some via the live food fish trade by individuals releasing these fish to establish a local food source. These fish pose several impacts on North American ecosystems. Their predatory behavior can drastically modify the array of native species found within North America. As a result, this can disrupt the ecological balance and change native aquatic systems.
http://www.dnr.state.md.us/fisheries/snakeheadfactsheetedited.pdf
Kelsey Rupp
ReplyDelete3rd Period
The Purple Loosestrife is an agressive wetland plant from Europe and Asia. It was introduced into the east coast of North America in the 1800s and is now in 40 states and Canada. One adult plant can produce 2 million seeds annually, making population control difficult. The plant does not have any natural predators in North America.
Several endangered native wetland plants are endangered by the the success of the Purple Loosestrife because the invasive plant forms an impenetrable thicket, preventing other species from growing in the same area.
http://www.great-lakes.net/envt/flora-fauna/invasive/loosestf.html
Joeline Kane
ReplyDelete4th period
In Colorado they are having trouble with tamarisk, zebra mussels, Eurasian watermilfoil and Russian olive. Bennet sponsored bill that would provide additional resources local organizations could use to remove invasive plant species such as tamarisk that use large amounts of water; combat invasive species in aquatic ecosystems that harm water supplies and reduce water quality; and reduce harmful weed populations that serve as fuel for wildfires.
http://www.greeleytribune.com/article/20100306/NEWS/100309801/1051&ParentProfile=1001
http://www.sciencedaily.com/releases/2009/04/090403080719.htm
ReplyDeleteThis article talks about the many many invasive species on Euopran coats. There are invasive mamals such as the mink and they are costing Europe billion pounds a year.
Melissa Wooten
Caroline Belmore
ReplyDeletehttp://www.dnr.state.mn.us/invasives/aquaticplants/milfoil/index.html
This talks about the Eurasian watermilfoil in Minnesota spread by boats and birds from EUROPE
http://anrcom.msu.edu/press/020110/021910_eabfeds.htm
ReplyDeleteOver 15 plants in Michigan are threatened by the emerald ash borer. The main problem that Michigan faces is the economic cost. It will cost over $10.7 million dollars over 10 years to protect SOME of trees. This cost does not include all of the ash trees that will be lost.
John Chavis
http://www.leamingtonpostandshopper.com/ArticleDisplay.aspx?e=1774104
ReplyDeleteAlex Penn...
In canada has found the kudzu plant growing in their territory. it is a very invasive plant and is known as "the plant that ate the south." The kudzu vine is a large green vine that spreads quickly and has been known to grow up to one foot per day in the southern U.S. The plant is native to Asia and was intentionall used as a forage crop and to use as an ornamental plant. In canada though, they have no idea how it got there and they cant just get rid of it becuase it is on private property.
This comment has been removed by the author.
ReplyDeleteAustin Wood
ReplyDelete4th period
New Zealand Mudsnail
A tiny snail that reproduces asexually. Native to New Zealand, it was accidentally introduced with imported rainbow trout in Idaho in the 1980s and into the Great Lakes via ballast water from ocean going ships.It is proposed as a prohibited invasive species (DNR), which means import, possession, transport, and introduction into the wild will be prohibited.
http://www.dnr.state.mn.us/invasives/aquaticanimals/nz_mudsnail/index.html
http://dnr.wi.gov/news/BreakingNews_Lookup.asp?id=1448
ReplyDeleteIn August of 2009, a citizen reported discovering an alien crawfish speicies taking residence in Washington County pond in Wisconsin. The invasive speicies is known as the Red Swamp Crawfish and is simlar looking to the native Wisconsin crawfish, making it hard to determine. The only difference is the alien species has red bumps on its claws while the native ones have white bumps. Although it doesnt seem like a big deal, the alien crawfish decrease fish and frog populations by eating their eggs and competes with the local crawfish, decreasing its population.
Chantel Reid
ReplyDelete3rd Period
http://dnr.wi.gov/invasives/aquatic/species/
a mysterious Chinese snail population, a non-native species, has found its way into the Wisconsin lakes. The entry states that there is not much information known about the species but it is clear that the native snail species are being negatively affected. Since their shell shape is so large and hard, the native fish species do not eat them. As the smaller, weaker, native species continue to be eaten, the Chinese mystery snail has a chance to thrive.
Grapevine moth
ReplyDeleteThe California Department of Food and Agriculture quarantined 162 square miles in Napa Valley on Tuesday in an effort to stop the spread of the European grapevine moth, the newest threat to grapes and other fruit. The moth was discovered in a vineyard insect trap in September, the first appearance by the species in the United States, the department said. The grapevine moth is a native of Italy, the moth has caused crop damage across Europe, as well as in parts of Africa, Asia and the Middle East.
http://www.nytimes.com/2010/03/13/us/13moth.html?src=me
The animal that i did was the northern pike. This fish has been spotted in California and people are trying hard to het rid of them. There was a worry that they will impact the fishing and the migration patterns of other fish.
ReplyDeleteHttp://www.nytimes.com/2007/09/12/us/12pike.html
This comment has been removed by the author.
ReplyDeleteVictor Foster
ReplyDelete3rd period
Cynanchum rossicum(aka the dog-strangling plant) is an invasive species native to Europe, but now found in North America: specifically the United States. Wherever this plant grows, it literally wraps itself around other nearby species and uses them as a stepping stone to climb closer to the sun, therefore killing surrounding vegetation.
http://en.wikipedia.org/wiki/Cynanchum_rossicum
April Damo
ReplyDeletehttp://www.dnr.state.mn.us/invasives/aquaticanimals/sealamprey/index.html
SEA LAMPREY
Sea lamprys are eel like fishes that attaches to fishes and feeds on their blood. their suction-cup-like mouth has teeth in concentric circles. they are native to the altalntic ocean, lake ontarion, and the St. Lawrence river. sea lampreys are historically the most devastating invader of the great lakes - a single one can kill 40 lbs. of fish. Lake trout populations were drastically reduced before control efforts were done. A US and Canadian control program has successfully reduced sea lamprey populations by 90%.
http://www.seagrant.umn.edu/ais/purpleloosestrife_info
ReplyDeletethis is the purple loosestrife. it was introduced by europe for flower gardens. the purple loosestrife is an aggressive invader and causes degrading of wetlands.
Many invasive species, including the sea lamprey, have been accidently, or in some cases purposefully, introduced to the Great Lake region. The sea lamprey is somewhat of a predaceous fish. It was native to the coastal regions of both sides of the Atlantic Ocean but, after entering throug hthe Welland Canal, found its way into the Great Lakes. Since then, it has become more of a hinder than a blessing to the Great Lakes. Only a few years after being introduced to this region, the sea lamprey became a top predator and quickly started depleteing the whitefish and lake trout population. Aquatic experts in the Great Lake region have become wary of the potential damage that the Sea Lamprey may cause in the future.
ReplyDeletehttp://www.great-lakes.net/envt/flora-fauna/invasive/lamprey.html
Shannon Cole
3rd period
http://anrcom.msu.edu/press/020110/021910_eabfeds.htm
ReplyDeleteThis website talks about how potentially ALL ash trees in North America could be lost to the Emerald Ash Borer. It is an invasive species that comes from Asia. It has wiped out various species of ash trees.
Lindsey Wynne 3rd period
This invader is the North Atlantic spider crab—males and females have been found in the waters near the Antarctic Peninsula. They likely stowed away in the ballast tanks of a ship, according to scientists.
ReplyDeleteShips carry water in their tanks and cargo holds for stabilization at sea. Organisms that live in the water get transported to new environments when the water is dumped.
And while the invaders hitch passage to the continent on ships and planes, a warming climate is allowing more of them to survive once they arrive.
Annual bluegrass also is invading the artic.
http://news.nationalgeographic.com/news/2006/07/060706-antarctica.html
Invasive Alien Species
ReplyDeleteInvasive alien species (IAS) are a major factor in environmental change in Africa, contributing to or exacerbating human vulnerability and foreclosing some livelihood and development options. Invasive species impact on economic sectors such as agriculture, forestry, fisheries, tourism, water management and hydropower production.
The region is now home to hundreds of IAS – both plant and animal – but the magnitude of the problem varies from country to country, with some such as South Africa facing serious challenges to control different types of IAS. On Marion Island, for example, the numbers of the island’s only land bird – the lesser sheathbill – have dropped, and the introduced house mouse is suspected of out-competing the bird species for food.
Plant and animal invasive alien species cost millions of US dollars annually in terms of lost revenue and expenditure on control measures. The World Conservation Union (IUCN) estimates that worldwide the economic costs of invasive alien species are about US$400,000 million annually. If control measures can be used as an indicator of the magnitude of the problem, the proposals by the African Ministerial Conference on the Environment (AMCEN) to raise more than US$265 million to fund various projects in Africa over 3-5 years show that IAS are as significant an environmental issue in the region as land degradation, drought and biodiversity loss.
http://www.eoearth.org/article/Pests_and_invasive_species_in_Africa
Paul Hardison
Tree of Heaven (Ailanthus altissima)...the tree is usually found in warm parts of the earth but is becoming invasive in Britain. It sends out suckers that can damage pavements and walls. In the right conditions it can spread very quickly.
ReplyDeletehttp://news.bbc.co.uk/local/oxford/hi/people_and_places/nature/newsid_8582000/8582535.stm
The invasive species that i have chosen was the Didemnum Vexillum aka the Sea Squirt. Its native place is unknown and was first discovered in 1993.
ReplyDeletehttp://www.invasivespeciesinfo.gov/aquatics/seasquirt.shtml
EWW! look at the picturehttp://www.invasivespeciesinfo.gov/aquatics/seasquirt_child.shtml
Tremayne McNair
http://www.nature.org/wherewework/northamerica/states/northcarolina/initiatives/art19765.html
ReplyDeleteThis link shows all of the invasive species that are creating competition for food here in north carolina to our local native species.
Josh Morton 4th period
http://amphibiaweb.org/declines/IntroSp.html
ReplyDeleteThis website talks about different examples of invasive species, for instance, the mosquitofish, after the mosquitofish was introduced, the number of moquitos declined. But then the number of amphibians declined also because they had no moquitos to eat.
Michelle Pumphrey
Siera Young.
ReplyDeleteRuffe: A New Threat to Our Fisheries
The ruffe (pronounced rough), is a small but aggressive fish species native to Eurasia. It was introduced into Lake Superior in the mid-1980s in the ballast water of an ocean-going vessel.
Because the ruffe grows very fast, has a high reproductive capacity, and adapts to a wide variety of environments, it is considered a serious threat to commercial and sport fishing. It also has the potential to seriously disrupt the delicate predator/prey balance vital to sustaining a healthy fishery.......
http://www.seagrant.umn.edu/ais/ruffe_threat
Brian laws
ReplyDeleteThis has to do with the invasive python in florida everglades
http://www.sciencedaily.com/releases/2008/02/080223111456.htm
Jerry Perez (3rd Period)
ReplyDeletehttp://www.journalgazette.net/article/20100419/BLOGS01/100419546
A marina worker at Geist Reservoir hooked a Chinese mystery snail, an exotic species already prominent in the reservoir, while fishing recently, and on it was another undesirable species—an adult zebra mussel.
“That’s one invasive species colonizing on another,” said Doug Keller, aquatic invasive species coordinator with the DNR Division of Fish and Wildlife.
Keller said the effect of zebra mussels can be devastating where the invasive species successfully colonizes.
“Zebra mussels can rapidly multiply and are known for clogging drainage and filtration pipes,” Keller said. “Besides pipes, they can attach to virtually anything in the water column, including rocks, limbs, piers or even boats.”
a major problem in Guam is the great loss of native birds, this is due to the introduction of the brown tree snake!!!!
ReplyDeletehttp://www.sciencedaily.com/releases/2008/08/080808090313.htm
Wild Boar
ReplyDeletehttp://www.invasivespeciesinfo.gov/animals/wildboar.shtml
Damages crops and native vegetation
http://www.seagrant.umn.edu/ais/sealamprey_battle
ReplyDeleteTHe sea lampery has invaded the great lakes and is causing a lot of trouble.
http://www.northlandsnewscenter.com/news/community/81405057.html
ReplyDelete