Polar bears were the biggest and most feared predator in the North Atlantic, until recently. This paper will explain what is happening to the polar bears due to the melting ice caps, what the result of this is and how that is going to change the entire region. It will focus on primarily three factors; climate change and CO2 production, the invasion of killer whales (Orcinus Orca), and how the invasion into the north will effect human civilizations.
Industrial fishing is cruel and in-human. The fishing methods used are designed to suffocate, squash and kill the sea animals. If the fish happens to reach the deck alive, the worst scenario awaits; their gills are slit in their full conscience or they are thrown to freezers to freeze to death. First, it is not necessary to catch tuna; secondly, it is unethical and immoral to kill millions of sea animals just because someone wants to eat tuna (Robbins,
There are several causes of overfishing, such as fishing vessel in large number in one area, using a mesh net in a small size and high demand of fish. One example of overfishing was happened in Canada. Since 17th century, local fisherman in Canada has caught cod fish using a simple fishing gear. Simple fishing gear makes limited the volume of their harvest, limited the size and the age of fish. Because the demand of cod fish was in a high level, the industries were also decided to run the infiltrations in order to overcome that. In addition, the new method that is used by the industries was by using high technology, that was trawling an area larger than before and to fish deeper in the ocean and also to catch more cod fish with different ages
Over fishing around the globe has lead to a dire need in effective fishery management as it has led to fisheries depleting worldwide. Seafood is one of the more popular delicacies around the world and is also the source of income for millions of fishers globally. Lack of and poor fishery management has led to an exhaust of the fish stock in the ocean, which in turn has had a negative impact on biodiversity. Poor management has also been a factor economically as it leads to a loss of about $50 billion annually for fisheries around the world. If proper steps are taken the problem can be managed, Fishery Solutions Center believes that if management is improved then abundance of fish can increase by
Adaptation is the key to an organism’s survival. It is the only way that organisms can advance with the ever changing environment. According to Charles Darwin’s theory of evolution by natural selection, the organisms that obtain inheritable traits which permit them to adapt better to their habitat are more likely to survive, reproduction and pass these traits to their offsprings.
Many are not aware, but seals are overpopulated enough already. The Canadian Seal Hunt is not only a blessing in disguise but a way to enable balance in the marine ecosystem. For many decades already, we have always had a responsibility to the environment in keeping balance to the marine ecosystem
Head and Keller (2015) hypothesized the reproductive biology of female darkblotched rockfish (Sebastes crameri), has changed its ovaries size, size of the fish and the age at when maturity may occur over a relatively short time period in response to changes in selective pressure, population density or overfishing. They choose to only do the female do to the knowledge that males had no effect on the growth of the population of the darkblotched rockfish. The female darkblotched rockfish were collected from mid-May to late of October 2011 and 2012. Northwest Fisheries Science Center’s (FSC) helped collect their own independent survey of the fish in U.S.-Canada to the U.S.-Mexico border at depths of 55 to 1280m. The female darkblotched rockfish
Bears’ portrayals of Alaska’s beauty and wildlife, and studying what the environmental cycle is like in Alaska, viewers can come to know what Alaska means to them. The film is able to provide a representation of the American people’s belief of Alaska as being an untamed, beautiful wilderness with free roaming wildlife that is from and far protected, from the changing world. Yet the film raises the possibility, though not as prominent as it should, that climate change will alter the landscapes shown in the film. In addition, upon looking at the film closely it shows that from climate change, Alaska’s land is slowly shifting at a constant rate. In which it then causes a change both in our perspectives and in the living habitats of the wildlife,
In the Washington Posts article “Just how badly are we overfishing the oceans?” the author suggests that the populations of fish are declining due to overfishing. While it might be true that people are overfishing, they aren't fishing to the point of extinction. There is also a need for stronger regulations to help regulate the amount of fish being fished. The fish populations aren't being drastically affected by fishing but some regulations can help control the population.
One day I was at the beach in Cayucos when my friend Cole came over at first we were just going do nothing but play video games and watch movies but then Cole had the idea to go down to the pier, I thought that it was a great idea. So we asked my mom if we could go down to the pier. She said “ Sure just don’t get in trouble.” So she gave us some money and we were on our way.
In this article by the U.S News, Diane Cole expresses the endangerment of polar bears throughout global warming and climate change. This article describes how polar bears are having trouble finding food because of the hot climate. The hot temperature has been melting sea yearly. Stating that polar bears rely on sea ice, it has been crucially life threatening. This article has relevance to my critical analysis because it shows the consequences of global warming and how it has a notable effect on polar bears. The researchers in this article conducted a longitudinal study to determine how depopulated the polar bears have become. “There are 25 percent fewer polar bears than 25 years ago” (Cole, 2009) Cole concluded that if global warming worsens, not only will polar bears depopulate, but it may have a large effect on the human population as well.
Certain species have a huge impact to an ecosystem, but even the smallest fish could have the biggest impact. Overfishing occurs when more fish are caught than the population can replace through natural reproduction (overfishing). The results not only affect the balance of life in the oceans, but could also affect the coastal areas that depend on fish for their way of life. For centuries, our seas and oceans seem to be considered a limitless food supply. But that is not the case, increasing fishing efforts over the last fifty years as well as unjustifiable fishing practices are pushing many fish stocks to the point of extinction. Millions upon millions of people rely on fish for protein, and fishing is so much of the livelihood for millions of people around the world (overfishing). There are a lot of recreational fishermen that complain about the laws we have in place to protect fish, such as a size requirement and limit per day. These laws are put in place by the state to help prevent a species from being over fished. The definition of over fishing is to deplete the number of fish in a body of water by too much fishing. Overfishing is very harmful to the ecosystem, taking a species close to extinction or completely extinct. As a species gets close to extinction it can be very hard to restore them back to sustainability. Even closing the fishing game for that species is not enough for a species to comeback from overfishing. Both recreational and commercial fishing have a huge impact on overfishing, by keeping under sized fish and other aquatic life. Not only do fish have to worry about fishermen but they also have to worry about each other, fish deplete their own population by feeding on one another. For example, Betta fish are known to eat fish of the same species but can live peacefully with fish of another species. Therefore, humans should embrace and follow fishing laws rather than try to sneak
People have been fishing since the beginning of time, and right know that is being threatend because of over fishing. I am a big fan of seafood and so are millions upon millions of other people. The problem is that people fail to realize the problems caused by over fishing because they only have to drive a short distance to a store, buy their fish, and go about their daily lives. They are unaware of the damage that fishermen are causing to the oceans around the world. Especially the Atlantic ocean The Atlantic ocean is struggling right now in terms of it's wild life. People have been over fishing this area since the early 1800's and they continue to do so today. There are many charity's and outreaches fighting to keep this ocean alive but they can't do it without