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Negative Human Influences on the Region Rampant over-fishing, pollution of all kinds, and global warming are the main contributors to a decline of the Great Barrier Reef. HUMAN IMPACT ON THE REEF The importance of the reef in maintaining the health and diversity of both offshore and inshore ecosystems is outlined in this section. In these times, human activity has intensified to a level where our actions have extended to the coral reefs on a global scale. However, humans are said to affect the Great Barrier Reef through coal mining, overfishing, digging canals, just to name a few. Human Impact. Nutrients. Acidification occurs because the ocean acts as a carbon sink, absorbing carbon dioxide from the atmosphere. The unprecedented bleaching events on the Great Barrier Reef in 2016 and 2017 resulted in mass coral mortality, with the 2016 bleaching event at least 175 times more likely to occur due to intensifying climate change. 236,000. tonnes of micro plastic enter our oceans each year. The importance of the reef in maintaining the health and diversity of both offshore and inshore ecosystems is outlined in this section. Coral bleaching tends to occur after the summer temperature maximum, and relates to where the hottest water is. Tropical sea surface temperatures have risen … Coral bleaching is the result of global warming caused by the mining and burning of fossil fuels like coal. The higher the levels of atmospheric CO 2, the greater the impact on water quality. Degraded coral reefs are less able to provide the ecosystem services on which local human communities depend. Two of the greatest challenges brought by climate change—an increase in ocean temperatures and acidity levels—are creating severe knock-on effects, jeopardising the Reef’s survival. Background Coral bleaching is a serious problem that is greatly affecting the state of the Great … There have been reports that the recent cyclone that affected Queensland, Cyclone Debbie may play a role in reducing the impact of coral bleaching. Concerted and careful management can help to preserve regions of the reef that are still in good shape, which will be crucial to the reef’s long-term survival. They issue permits for various forms of use of the marine park, monitor usage in the park to ensure compliance with park management. Conduct internet research to find articles and reports which support your answers. When these nutrients are introduced to marine ecosystems, algal blooms grow because of … Ocean acidification is a significant impact of a changing climate on the Great Barrier Reef ecosystem. Human action has not only affected the corals, but also the surrounding creatures that share these systems. The sequential mass coral bleaching we are witnessing on the Great Barrier Reef is the literal effect of climate change. Global warming is heating our oceans, and if the water stays too hot for too long, corals bleach and die. The Great Barrier Reef is the the biggest single structure made by living organisms; so vast that it can be seen from space. Approval of Galilee mega mine leaves Reef strategy in tatters. Farming and mining practices have caused inflows of sediment, fertilizers and pesticides. Humans have had a vast impact on the health of the Great Barrier Reef ecosystem. There is a narrow opportunity for limited recovery, but the Great Barrier Reef as we know it (complexity, extent, etc) is already dead in many areas. (Read: Ways to Protect the Marine Life ) In 2016 coral bleaching severely bleached the northern third of the Great Barrier Reef, the middle section was bleached to a lesser extent, but still quite severely, while the bottom third of the reef largely escaped bleaching in 2016. Describe the causes of mass coral bleaching events. "People are right to fear overreliance on techno-fixes," says Harvard professor David Keith. Boating in the Great Barrier Reef is one that is vulnerable to even human!, '' says Harvard professor David Keith overreliance on techno-fixes, '' says Harvard David. For each strategy write several sentences which justify your decision about how effective/ ineffective it will be long-term.! Of human activities are all having a compounding effect on the Reef, for to! For future generations for for the creation of the park to ensure compliance park... 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