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Adi Dalal

on 6 June 2011

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Science Presentations, 3.1 Goverment Action to protect Canada's Ecosystems Chloe, Tammy, Patricia, Wojtek, Connie and Aditi A Presentation By... The Story of Lake Erie The smallest and shallowest of the great lakes has not always been such a hotspot for recreation activities. In the 1970s, the lake was filled with sewage, farm chemicals and industrial chemicals which all had the potential to cause a collapse of the lake’s ecosystem. Thankfully in 1978 the United States and Canadian governments signed the Great Lakes Water Quality Agreement which caused various provincial and state governments to create management plans to clean up each of the Great Lakes. This agreement has significantly helped Lake Erie recover. The modern science of conservation biology seeks to understand and protect biodiversity Part of conserving biodiversity includes knowing which species are most in danger of extinction and developing stratagies to protect them Extinctions are happening at a rapid rate all over the world, but a species must become at risk before it can become extinct At risk means any native species that is in danger of becoming extinct or disappearing from a region Species at Risk Conserving Biology Extirpated: A species that no longer exists in a certain region, but still occurs elsewhere Endangered Threatened Special Concern A species that faces extinction or extirpation A species that is at risk of becoming endangered if limiting factors are not reserved A species with characteristics that make it sensitive to human activites or natural events Levels of Risk Conservation Strategies In order to coordinate conservation efforts, goverments sign international treaties A treaty is an agreement usually between nations in which they agree to do certain things to achieve a common goal The Convention on Biological Diversity is an international treaty signed by 161 countries, including Canada. It's goal is to conserve Earth's biodervisity and to use this biodiversity in a sustainable way THE END Thanks for listening Ex-Situ Conservation Method of last resort Conserves species by removing them from their natural habitat At-risk species are taken into zoos, botanical gardens or reserves Many zoos participate in Species Survival Plans (SSP's) which are breeding programs specifically species that are threatned to become extinct In- Situ Conservation Conservation species in their natural surroundings Main strategies is protecting species habitats (eg: farmers must preserve their pastureland and hedgegrows for the loggerhead shrike Other stratagies include protecting a species from their predators (eg: protect a turtle's nest site by fencing it off) Much more preferred method because it is able to maintain an ecosystem's genetic diversity
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