Good afternoon. My name is Siiri Paurson. And I will be speaking today about OVERFISHING. I will be speaking for about 10 minutes. I’ll be pleased to answer any questions you may have at the end of the presentation. INTRODUCTION: What is overfishing? What is causing overfishing? Why is overfishing a problem? Fishing down the food web. What can we do to help? WHAT IS OVERFISHING?: Overfishing can be defined in a number of ways. However, everything comes down to one simple point: Catching too much fish for the system to support leads to an overall degradation (degrödašon) to the system. Overfishing is a non-sustainable use of the oceans. WHAT IS CAUSING OVERFISHING?: Worldwide, fishing fleets are two to three times as large as needed to take present day catches of fish and other marine species (spiišis) and as what our oceans can sustainably support
OVERFISHING Presented by: Siiri Paurson Tartu 2015 INTRODUCTION What is overfishing? What is causing overfishing? Why is overfishing a problem? Fishing down the food web (toitumisahela võrgustik) What can we do to help? WHAT IS OVERFISHING? Catching too much fish for the system to support leads to an overall degradation to the system. Overfishing is a non-sustainable use of the oceans. WHAT IS CAUSING OVERFISHING? Worldwide, fishing fleets are at least two to three times as large as needed to take present day catches of fish and other marine species. On a global scale we have enough fishing capacity to cover at least four Earth like planets. Overfishing have a large impact on the basic functioning of our marine ecosystems.
Great Barrier Reef Hanna-Lisett Hellaste Tallinn Nõmme Gymnasium 10.H facts Environmental threats Human use In Coral Sea, Queensland, Australia 2300km long 344,400 km2 visible from outer space home to countless species Hawksbill sea turtle Staghorn coral Olive sea snake Climate change Shipping Overfishing Tourism Diving Fishing Explore the Daintree Rainforest Hot Air Ballooning Green Island Day Trip world's largest coral reef system home to countless species Many threats Popular tourism place
normal. • The 2012 update of the IUCN Red List of Threatened Species shows that of the 63,837 species examined worldwide, 19,817 are threatened with extinction - nearly a third of the total. • If present trends continue, scientists warn that within a few decades, at least half of all plant and animal species on Earth will be extinct, as a result of climate change, habitat loss, pollution, acidifying oceans, invasive species, over- exploitation of natural resources, overfishing, poaching and human overpopulation. Lower Life Expectancy in the Fastest Growing Countries • According to a Harvard study, "Over the next forty years, nearly all (97%) of the 2.3 billion projected increase will be in the less developed regions, with nearly half (49%) in Africa." Already strained with relentless population explosion, many developing countries, such as in Sub Saharan Africa and Southern Asia, will experience a degradation of their quality and
were cultivated in 1998. The only state owned fish farm in Estonia is Põlula Fish Rearing Center, which is situated in Northern Estonia, near Rakvere. It was built 1995-1998 in place of 100 years old trout farm using spring water. Its main task is production of salmon juveniles for stocking into the rivers, flowing into the Gulf of Finland. Salmon is endangered and rare species in Estonia due to loss of of spawning sites after dam construction on the rivers and also because of overfishing. The production capacity is 100 000 2-year old or 75 000 1- year old salmon. 1997-1999 370 th. salmon juveniles have been released. Being the newest and the best equipped fish cultivation unit in Estonia Põlula Center serves also as a base for education and research. Research and education in fish farming is carried out in Department of Fish Farming of Estonian Agricultural University, Tartu. The staff consists of four scientists and four assistants
As the world’s population continues to grow, so does the amount of garbage that people produce. On-the-go lifestyles require easily disposable products, such as soda cans or bottles of water, but the accumulation of these products has led to increasing amounts of plastic pollution around the world. As plastic is composed of major toxic pollutants, it has the potential to cause great harm to the environment in the form of air, water and land pollution. If overfishing continues, if pollution continues, many of the species of today will disappear off. Put simply, plastic pollution is when plastic has gathered in an area and has begun to negatively impact the natural environment and create problems for plants, wildlife and even human population. Often this includes killing plant life and posing dangers to local animals. Plastic is an incredibly useful material,
A G l o b aw l armtng B Pollution C Hunting/Overfishing D Deforestation Effects 1 destruction of the rainforest 2 manyanimalsand fishwiPedout
A G l o b aw l armtng B Pollution C Hunting/Overfishing D Deforestation Effects 1 destruction of the rainforest 2 manyanimalsand fishwiPedout
A G l o b aw l armtng B Pollution C Hunting/Overfishing D Deforestation Effects 1 destruction of the rainforest 2 manyanimalsand fishwiPedout
A G l o b aw l armtng B Pollution C Hunting/Overfishing D Deforestation Effects 1 destruction of the rainforest 2 manyanimalsand fishwiPedout
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