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The impact that invasive species have on our ecosystem
The impact of invasive species on ecosystems
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Invasive species are organisms that harm a new environment that they are not native to. Many invasive species like Eurasian milfoil are easily able to reproduce and can do so fast. Due to this, the limited space in a body of water or area of land is quickly taken over by the invasive species so other native plants face the risk of death or even extinction. Overall, these invasive species can do great harm to an ecosystem or an economy, causing problems that are destructive to numerous organisms.
Eurasian milfoil or Myriophyllum spicatum is an aquatic invasive plant that can be found throughout the Chicagoland area and in surrounding bodies of water. This plant can be a hindrance to swimming, boating, and fishing because of their thick, tangled stems and mats of vegetation. According to the Minnesota Sea Grant, Eurasian milfoil also overcrowd a body of water, which leaves little room for the plants native to the Great Lakes. One prediction is that if the Eurasian milfoil is not stopped, a reduction of biodiversity may result in Chicago and the areas surrounding it. If this was to occur, the ecosystems of the Midwest region would be significantly impacted in a negative way.
As reported by the USDA (United States Department of Agriculture), Eurasian milfoil, which is native to Europe, Asia, and Northern Africa, was most likely accidentally introduced to the United States through ballast water, which is water from other places that is dumped into another body of water to aid in stabilizing a ship. The aquatic species are oftentimes trapped in these ballast waters and are released with them into new and unknown environments. This can lead to rapid growth of the invasive species and can become an endangerment to other organisms that...
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Milfoil Control. (n.d.). - Easily Kill Milfoil in Your Pond or Lake. Retrieved May 20, 2014, from http://www.lakerestoration.com/t-milfoil-control.aspx minnesota sea grant - outreach - exotic species - eurasian watermilfoil: factsheet. (2010, January 26). minnesota sea grant - outreach - exotic species - eurasian watermilfoil: factsheet. Retrieved May 15, 2014, from http://www.seagrant.umn.edu/exotics/eurasian.html
Pest Control Rx.com. (n.d.). 'Pest Control Rx.com'. Retrieved May 11, 2014, from http://www.pestcontrolrx.com/david_somlcom/2008/08/milfoil-5-best.html
Simulating an Invasion! Scientists take a look at overland transport of Eurasian watermilfoil. (2014, March 1). Aquatic Plant Management Society Inc. Retrieved May 15, 2014, from https://apms.org/2014/03/simulating-an-invasion-scientists-take-a-look-at-
overland-transport-of-eurasian-watermilfoil/
As if there weren’t enough problems for scientists trying to save the Great Lakes Eco System. Many non-native species have entered the eco system and many of them are harmful. Every species in itself has played a role in the eco system. These non-native species make it increasingly difficult for the Great Lakes Eco System to be regulated.
...bility to multiply fast and to attach to almost any hard surface they are a hard species to handle (“Zebra Mussels,” 2013, para. 3). They can ruin ecosystems and ruin economies with their effort to eradicate them. It is unfortunate that at present time there’s no really good or safe way to get rid of them and return lakes and rivers back to normality. Until then we have to take the necessary measure to ensure that the spread of Zebra Mussels is at halt. The people who work at Lake Pueblo and the DOW have done a great job in making sure Zebra Mussels are not a threat. Since the first incident no Zebra Mussels or larvae have been found at Lake Pueblo or in any other water in Colorado (“Pueblo Chieftain,” 2008, para. 12). Hopefully the Zebra Mussel is a thing of the past here in Colorado but a watchful eye must always be present just in case they do ever show up again.
Invasive species as a whole have become a nuisance to many habitats and ecosystems around the world. What defines an invasive species is the following. It must be a species that is foreign to the habitat it resides in, have no natural predators which allow it to reproduce in such a rapid manner, and out compete native animals of food and shelter (Rosenthal 2011). These characteristics are what create such high populations of these invasive species in various habitats around the globe.
...d when transoceanic ships drop anchor in freshwater ports. They have become an invasive species in North America, and as such they are the target of Federal policy to control them, for instance in the National Invasive Species Act (1996).
The piece I chose to do my literary analysis on was the article, The Truth About Invasive Species, written by Alan Burdick. The article states that invasive species are all around us, but the area with the most prominent amount is the suburbs of Miami. It goes into detail about how abundant invasive species are in this area. Most people who would see a strange animal in their lawn or area would be bemused, however for the people of Southern Florida, this is a recurring scene. Burdick states that “virtually everyone in the South Florida, including Hardwick, has a neighbor with a backyard menagerie of lucrative critters on hold for resale”. Burdick describes both how an invasive species is introduced into an ecosystem, and the impact the have on other species upon their arrival.
This vegetation also provides much cover for fish. The aquatic plants provide a great source of food supply and act as a nursery for young fish (“Native” par. 5). Vegetation serves many purposes in fish habitat; besides keeping fish safe. It also helps keep the lakes clean. Aquatic plants cycle the water and help absorb pollutants. Another great benefit of these aquatic plants are that they help hold sediment and the banks of the lakes in place while providing oxygen into the water (“Invasive” par. 7-8). Unfortunately invasive species are destroying such vegetation. The Common Carp or “Cyprinus carpio” is one such fish that is causing great damages to lakes all around the world.
Should exotic snakes or other large reptiles be allowed as pets in Florida? Right now these escaped/released feral reptiles create an estimated $120 billion in environmental damage each year according to David Steen on Slates Animal Blog.
In conducting my research, I observed activity on a rocky shore off the coast of Washington in the Northwest United States (workbook). This environment inhabits 10 species in shallow water nearly on top of each other. Each species helps form a complicated ecosystem where species protect, consume, and compete for space with other species. Out of the 10 species there are three producers, three sessile consumers (otherwise known as filter feeders), and four mobile consumers- one of which is an invasive species. In this environment the producers are Nori Seaweed (Porphyra), Black Pine (Neorhodomela), and Coral Weed (Corallina). Producers make their own food through sunlight, so only have predators and competition for space. Coral Weed is the strongest
Nonnative species can also be called alien, exotic, or nonindigenous. Their presence is due to humans dispersing them to other locations beside their native habitat, or by humans creating environmental conditions that allow their growth. When nonnative species begin to take over a new habitat and displace native species, they are then termed an invasive species. Nonnative invasive species are one of the biggest threats to ecosystems in North America (Cox, 1999) because they are able to have an impact on many levels, including ecosystems, communities, and populations (Cushman, Tierney, & Hinds, 2004).
Zipkin, Elise F., Kraft, Clifford E., Cooch, Evan G., and Sullivan, Patrick J., “When Can Efforts to Control Nuisance and Invasive Species Backfire?,” Ecological Applications, Vol. 19, No. 6 (2009): 1585-1595, accessed October 11, 2013. http://www.jstor.org/stable/40346271.
Zebra Mussels pose two primary ecological dangers. The first being drawing water into their bodies and filtering out the food of microscopic plants and animals, subsequently depleting the food supply for other aquatic organisms and increasing the water clarity which allows higher light penetration to inhibit predatory fish in their food-searching endeavors. Secondly, they can attach to the shells of native mussels and smother them. In analyzing the physical composition of Zebra Mussels, their one-eighth to two inch yellow/brown striped exterior can be deduced. Different approaches can be considered to control this invasive species. Mechanical control can be implemented by way of preventative measures (especially because Zebra Mussels are extremely difficult to control once they have infiltrated a body of water)., including industrial vacuums and backflushing. Chemical control, summarized by the use of chlorine, bromine, potassium, permanganate, and other resources, is another
Species such as the zebra mussel, quagga mussel, urasian malfoil, sea lamprey, and asian carp reproduce and spread. These invasive miscreants ultimately degrade habitat, outcompete the native species, not to mention short-circuiting food webs. When a new and aggressive species is introduced into an ecosystem, it might not have any natural predators or controls. It can breed and spread relatively fast, taking over an area. Native wildlife may not have evolved defenses against the invader or they cannot compete with a species that has no predators.They threaten and hurt the Great Lakes economy by damaging critical industries such as fisheries, agriculture, and tourism. There are a couple of ways that these unwanted species are introduced to the Great Lakes region. Ships can carry aquatic “hitchhikers”in its ballast water. A ballast tank is used to balance big ships. When a ship empties it’s ballast tank, invasive species may have traveled unknowingly with the ship and then are released with all of the water into the Great Lakes. Zebra mussels first came to the U.S. from Eurasia in ship ballast water released into the Great Lakes in the 1800’s. Since then, they have spread dramatically, outcompeting native species for food and habitat. Zebra mussels can attach to almost any hard surface, a nuisance to the communities in the Great Lakes region and the animals. They clog water intake and discharge pipes, attach themselves to boat hulls and docks, and they even attach to native mussels and crayfish. Plants can get stuck on boat propellers and then fall off accidentally into a new body of water. Invasive species can alter the diversity of species that are important for native wildlife. Aggressive plant species like Urasian Malfoil can quickly replace a diverse ecosystem with a monoculture of just Urasian Malfoil. Another species named Asian Carp are a fast growing
Invasive alien species are disrupting and changing the normal ecological functions of biomes, ecosystems, and the biosphere as a whole (CBD, 2009). They are a threat to biodiversity and can cause damage to, or even eradicate native species which natural cycles and other organisms depend on. While disrupting energy flow, food chains, and shaking the structure of ecosystems to the core, invasive species create not only ecological, but also a whole host of social, economical, and health issues that affect the livelihood of almost every organism on earth, including humans (CBD, 2009).
Although sometimes the birds and so on can help get rid of the specific Invasive plant species have contributed to the decline of 42% f United States endangered and threatened species, and for 18% of United States endangered or threatened species, invasive are the main cause of their decline. Some other impacts are Invasive species compete directly with native species for moisture, sunlight, nutrients, and space. Overall plant diversity can be decreased, establishment and spread of invasive species can degrade wildlife habitat,results in poor quality agricultural lands, degraded water quality, increased soil erosion, and decreased recreation opportunities. (native
Seagrass is on the decline around the world and it is a key vital marine ecosystem found in shallow water mainly distributed throughout tropical seas, from a temperature of 4oC to 24oC. They are the only angiosperm to be able to survive in aquatic conditions providing support and shelter for vast amounts of species. Are marine aquatic plant and is a key species in coastal areas found all over the world, although there is not a huge variety of species, there is roughly only around 60 species and over 14% of them are endangered.