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Canadian Invasive Species Issue When people mention dangerous fish, sharks, piranhas, and barracudas probably come to mind. By comparison, the round goby seems harmless (Figure 2.19). However, this fish and other invasive species cost the Ontario economy hundreds of millions of dollars and affect the sustainability of the ecosystems. How could human activities be modified to minimize or prevent the introduction of non-native organisms to the environment? Background Information Native to Eastern Europe, the round goby arrived in North America in the ballast tanks of a ship. When the ship dumped its ballast water in Lake St. Clair, it released a number of invasive species into the Great Lakes, including the round goby. The round goby arrived in North America without the predators and parasites that are associated with it in its natural habitat, and the exotic invader was free to reproduce as fast as it could. The round goby is highly territorial and able to out-compete many native fish, including mottled sculpin and native logperch, causing declines in these populations. This fish is relatively small, growing to an average length of 18 cm in the Great Lakes. It prefers the rocky and sandy lake bottoms that are typical of the Great Lakes. In addition to displacing a number of native fish, the round goby is also a voracious predator of another invasive species, the zebra mussel. Zebra mussels often have very high levels of contaminants in their tissues. These become concentrated in the round goby. Any animals that eat the round goby are likely to have much higher levels of contaminants in their tissues as well. Other invasive species, including the Eurasian ruffe, spiny water flea, zebra mussel, and purple loosestrife, have also been introduced to the Great Lakes through ballast water. The round goby is a relatively small fish and is considered very aggressive. Presentation This assignment will allow you to utilize your creative side. You can create a poster, booklet, brochure, website, or power point presentation. Assessment You must seek permission from your teacher for any presentation other than a poster, booklet, brochure, website, or power point presentation. The project will be assessed for communication and application (see the achievement chart). Sources and References Sources are required for all information, pictures, and maps. Provide the web address with the information. The following references will get you started. http://www.invasivespecies.gc.ca/english/view.asp?x=1 http://www.invadingspecies.com/indexen.cfm http://www.mnr.gov.on.ca/en/Business/Biodiversity/2ColumnSubPage/STEL02_167267.html http://www.invadingspecies.com/Invaders.cfm?SID=1 Use the index in Pearson Investigating Science 9 to find any articles on invasive species. Analyze and Evaluate Research and describe how human activities (a minimum of three) have contributed to the introduction of so many invasive species in the terrestrial and/or aquatic ecosystems of Canada. Choose an invasive species, found in Canada, and identify interactions between the invasive species and the biotic and abiotic environment. Research and describe how the environment and human society (social and economic) have been impacted by invasive species in Canada. Propose potential solutions (a minimum of three) that would reduce the introduction of invasive species into Canada. Canadian Invasive Species Achievement Chart Date Due:_________________ I/R Level 1 Expectation A1.11 Communicates ideas, communicates for plans, and conclusions, in different audiences writing, and /or in electronic and purposes with presentations, using limited effectiveness appropriate language and a variety of formats. B1.1 Assess, on the basis of applies knowledge research, the impact of a and skills in familiar factor related to human contexts with limited activity (the introduction of effectiveness invasive species) that threatens the sustainability of a terrestrial or aquatic ecosystem. B1.1 Assess, on the basis of proposes courses of research, the impact of a practical action of factor related to human limited effectiveness activity (the introduction of invasive species) that threatens the sustainability of a terrestrial or aquatic ecosystem. Name: Level 2 communicates for different audiences and purposes with some effectiveness Level 3 communicates for different audiences and purposes with considerable effectiveness Level 4 communicates for different audiences and purposes with a high of effectiveness applies knowledge and skills in familiar contexts with some effectiveness applies knowledge and skills in familiar contexts with considerable effectiveness applies knowledge and skills in familiar contexts with a high degree of effectiveness proposes courses of proposes courses of practical action of some practical action of effectiveness considerable effectiveness Please include this achievement chart with your product. proposes courses of practical action of a high degree of effectiveness