To control the overfishing and growing industrial fishing market, in 1977 the Canadian Government introduced a 200 mile management zone but by that time most of the ecological damage had started. However, during this time other industries like resource-extraction failed, which put pressure on the fishing industry and even the government had to encourage more catching of fish for exports. However, as stocks of cod fish continued to drastically decline the government finally decided to ban cod fishing in 1992. Though the cod fishing industry boosted the Canadian economy and provided employment for local
This information appears to be encouraging the reader not to boycott seafood because the seafood is becoming more and more sustainable. However, the point of the boycott was to stop the hunting of harp seals; if people wanted to support the swilers, they would not boycott in the first place. This becomes red herring information (Henderson, 2013, p. 52) because it takes the focus off seal hunting, and provides irrelevant
Introduction Whale hunting in Japan has become an increasingly controversial topic after the International Whaling Commission law was passed because Japan has been killing large number of whales for scientific research. This is because of that some of whales’ species such as blue whales are considered endangered and this might cause an ecological damage to the sea environment. Whales are intelligent animals and their existence participate in the environmental equilibrium therefore killings whales should be prohibited so as the preserve the environment and ensure the sustainability of our planet. In fact, it morally wrong to kill and eat intelligent animal and to keep hunting large number while is about to extinct. Therefore, Japan
Changes in predator abundance can cause cascading effects to the ecosystem structure, functioning and resilience (Baum & Worm, 2009). Due to the sperm whales’ large body size, large population size, high trophic level and potentially important role in top-down control of cephalopods, the impact of their reduction may be more significant than that of other species. North Pacific sperm whales are significant cephalopods predators. Removal of sperm whales in the North Pacific could lead to dramatic increase in abundance of large squids, subsequently leading to the decline of sardine landings (Croll, Kudela & Tershy, 2006). This could majorly tip the fragile balance of the marine
Whether there is any significant impact of the existence of sharks is a non-debatable issue, but two diverse views concerning the issue On the one hand, Sharks are portrayed as vicious creatures who are a threat to human existence, and on the other, what is often overlooked is the vital impact of sharks on our society and the food chain, how it preserves our ecosystem to where it stands today. Consequently, due to corrupt human nature, the population of sharks is declining substantially. This essay will exhibit many arguments, including: the social ,economical, political and environmental impacts of sharks, while favouring their existence and display how corrupt human nature is simply disposing of this valuable creature. Sharks have many positive
As they usually hunt old, weak or sick prey, they help to keep the prey population in good condition, healthy and strong, enabling these more naturally fit animals to reproduce and pass on their genes. The effects of removing sharks from ocean ecosystems, although complex and rather unpredictable, are very likely to be ecologically and economically damaging. Here are some reason why killing sharks is very bad: 1)Sharks are being fished at a rate faster than they can recover. Due to overexploitation and lack of proper management, many shark species are under considerable risk of unrecoverable decline with some species having declined to near extinction in recent years. According to reports, sharks are being killed at an alarming rate of up to 273 million worldwide per year.
Tests conducted by Geological Survey have shown that tuna is high in mercury which may kill a person. Do you love seafood? If you are great sea food lover than we suggest you to try wild caught food such as salmon or take some medicine such as chlorella tablets in order to help your organism absorb the mercury from the fish. Also herring, sardines and anchovies are great option due to their short life. However, always check the labeling, be aware what you eat and where you buy youf favorite food.
The cause for the bottleneck in the orca population was too old and widespread to be credited to human disturbance so it must have been caused by the last glacial maximum. The populations of orcas that recovered after the glacial period evolved to change. Some remained predators to fish and birds, others evolved to a different niche of marine mammals and sharks. These populations diverged due to geographic differentiation and this also could have affected the intraspecific evolution of these orcas. However even though the killer whales at different locations have similar genetic variation this variation is enough to separate them, partially because the kinship genetic variation within a specific population is even smaller.
Arguing from this perspective, I believe that, had the paddlers not motivated Luna’s haphazard swimming behavior, the captors’ efforts of capturing Luna would not have been thwarted. In that case, the process of relocating him to his original habitat where he had been alienated from his orca family for unknown reasons would have been successful, and Luna would not have been killed. Probably Luna would still be alive. Even so, I still sustain that humans are not to blame entirely for Luna’s ill-fated demise. Apparently, CBC News confirms my belief by declaring that it is confirmed that about 60% of whales die from interactions with humans (para.
This is concerning for a couple of reasons. First, it has a tremendous negative impact on the marine ecosystem. Species are being taken away from ecosystems, in some cases even being depleted to near levels of extinction. For example, the same UN report reveals that, worldwide, nearly 90% of predatory fish stocks are gone . That means that most of the world is losing