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Impact of climate change in Africa
The negative effects of overfishing
The negative effects of overfishing
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The Nile Perch is an important fish in Africa and a prized catch for a sport fishermen, and could be very expensive to sell. The Nile Perch has black eyes with a silver and blue tinge. The Lates Niloticus, also known as the Nile perch, is one of the most prized fish to catch for fishermen. However, other people in the area do not see the fish as such a prize, the fish’s diet consists of the fish ordinary people are used to consuming in their own diet. The average Nile perch weighs in at five hundred pounds and up to six feet long. The fish tends to cause disarray when introduced to new areas, consuming fish of native populations. The fish has very distinctive features, its body is a slight blue color and it also has black eyes with a yellow …show more content…
However, there were many side effects of placing the fish into a native area. Since the fish was artificially placed into the lake, researchers did not realize the fish’s skin was too oily and would ultimately cause harm to natural growth along the river banks. As a result, the banks began to erode into the lake. The high nutrient levels introduced to the river have also led to increased levels of algae and water hyacinth. The increased algae levels and water hyacinth have resulted in the death of more fish. The fish has not just made an impact on the environment, it has also affected the communities of the native people in the area. Men and women have been displaced from their usual fishing and refining work (Lowe, SJ, Browne, M, Boudjelas, S, …show more content…
Prices of all fish, including tilapia and Nile perch, have doubled in the last two years. The freshwater fishing industry is much more popular than the ocean fishing industry, and more than two million people rely on fishing as their income. Majority of fishermen catch their products from Lake Victoria, and most of the fish they catch is the Nile perch. Even though the fish has driven many fish to extinction, fishermen see the fish as a staple in their economy. However, natives to the area have said the amount of fish being caught has significantly dropped, and many believe it is due to a combination of climate change and overfishing. Evidence for the declining population can be seen in the five percent drop between 2009 and 2011, and the average size of Nile perch being caught is also smaller. Overfishing means a lot of the fish do not grow into maturity before being caught, and evidence shows the average size of fish being caught dropped by about half between 2008 and 2010 (McDonnel,
Since three-forth of the world is composed of bodies of water, it’s natural that a great number of people rely on fishing for their livelyhood or just for their recreation needs. There are numerous of fish species swimming under the lakes, seas, ponds, and rivers. Most anglers consider fishing as the delight in their purpose-driven life, a sport, as they say.
Larabee, John, and Richard Price. "Tide of Troubles has Fish Industry Reeling/ Crisis Caused by Pollution, Development, Over-Fishing." USA Today 10 Mar. 1994: 9A
The subsequent description of the cod’s historical significance served to relay the economical and cultural importance of this fish, or rather the instrumental value of the fish. The...
...rough an attempt to overfish the species is unlikely due to their ability to quickly recover (Barbour, 2011). A substantial reduction of adult abundance will require a long-term commitment and may be feasible only in small, localized areas where annual exploitation can be intense over multiple consecutive years (Barbour, 2011).
Overfishing is defined as a form of overexploitation where fish stocks are brought down to unacceptable levels. In the UN Food and Agriculture Organization’s 2 yearly report (SOFIA), it states how over half of the fish stocks, worldwide, are fully exploited. Other research has shown it only takes 10-15 years of industrial fishing to obliterate a tenth of the intended species. Overfishing causes a ripple effect that hurts the entire ecosystem. The balance of the chain depends largely on the interaction between the predator and the prey.
Peacock bass are the most beautiful fresh water fish that you can find in certain parts of America but they are mostly highly concentrated in South America including; Amazon, Columbia, Dominican Republic etc… It is a common misconception but peacock bass are actually not a member of the bass family. Even though they are referred to as bass, they are actually members of the Cichlid family. Peacock bass is a general name for two types of fish one being the speckled peacock bass and the other being the royal peacock bass. The speckled peacock bass is the largest out of the two and can grow to around 4 feet long which is outstanding for a fish. The royal peacock bass is the smallest, with its maximum length of around 1 foot.
Simply, overfishing depletes fish stocks. The consumer demand for fish has risen dramatically over the past decade or so, so much that fisheries are designing new and innovate ways to catch more fish, and at a faster rate to meet consumer demands. What fisheries do not realize, though, is that their removal of fish from the oceans is too great and far too fast for new fish stocks to be made. So, no mating is occurring, leaving the oceans emptier each day. If this rate continues, all fish in the ocean will be almost non-existent. Already, we are experiencing a major decline in fish population: "In 2003, a scientific report estimated that industrial fishing had reduced the number of large ocean fish to just 10 percent of their pre-industrial population. "(par.6).Overfishing brings the main consequence of decrease in the fish population. People rely on fish for survival (in some countries, fish is their only source of food), and they rely on marine life for products (goods like lipstick, petroleum jelly, make-up, etc.)
In The Rainbow Fish by Marcus Pfister tells how a beautiful, extraordinary, yet, self-centered blue fish learns that being beautiful isn’t the key to happiness. The blue fish came to find this lesson when he lost his friends. Pfister takes a simple ocean setting and explores the consequences of an individual’s arrogance toward their peers, the process of humbling of oneself, and the tremendous reward one feels when they learn to share. The story achieves these morals by the author’s use of detailed imager and also, the influence of minor characters on the antihero in order to reveal to the audience the true thematic message; selfish actions bring true happiness.
A poem without any complications can force an author to say more with much less. Although that may sound quite cliché, it rings true when one examines “The Fish” by Elizabeth Bishop. Elizabeth’s Bishop’s poem is on an exceedingly straightforward topic about the act of catching a fish. However, her ability to utilize thematic elements such as figurative language, imagery and tone allows for “The Fish” to be about something greater. These three elements weave themselves together to create a work of art that goes beyond its simple subject.
Orconectes rusticus, also known as Rusty crayfish, are freshwater benthic omnivores that are important in the lentic ecosystem (Nilsson, E, et al, 2012). Nilsson et al, observed how the Rusty crayfish that are native to the Ohio River valley in North America are dispersing to other lakes and becoming an invader of that ecosystem. Rusty crayfish feed on the microphytes, (Nilsson, E, et al, 2012) which are aquatic plants that enhance water transparency and aquatic biodiversity in fresh water ecosystems (Peeters Ehm, et al. (2013)). Microphytes also provide shelter and food for native fishes such as lepomis. Lepomis also prey on the juvenile rusty crayfish. Abundances of rusty crayfish, macrophytes and Lepomis were associated by a feedback that
In the 1950s’ the Nile perch was introduced into Lake Victoria. The introduction of this fish caused nearly 200 endemic species in Africa to go extinct (Cite). 25 years later the population of this fish boomed. The Nile perch feeds off of fishes, insects, crustacea, and
Fish protein has been a mainstay for the human diet for centuries. However, aquaculture, which is the practice of raising fish such as salmon in controlled conditions, as opposed to the commercial fishing industry, which is procurement of wild fish from their natural environment, made its debut in the United States as a commercial enterprise in the late 1970’s according to the Eco - Justice Marketplace Project.(n.d.). This mode of salmon procurement began to develop in the late eighteenth and early nineteenth century, as a response to the declining populations of native wild fish such as salmon and trout.
Overfishing is the most major problem related to oceans, but it is also the most overlooked. Fishing has been going on for thousands of years, and fish have always been seen as a renewable resource, that would replenish itself forever for our benefit. But around the world there is evidence that fish are not recove...
Unless the current situation improves, stocks of all organisms that are currently fished for food are predicted to collapse drastically by 2048 (WWF 2.) Briggs emphasizes that over-fishing “has induced population collapses in many species. So instead of having less than a hundred species at risk, as was the case some 30-40 years ago, there are now a thousand or more
First, across Africa the landscape is changing, the snowy caps of Mount Kilimanjaro are melting and the shorelines of Lake Chad are receding. The once enormous Lake Chad has nearly vanished, it is now half the size it was thirty five years ago (Offor, 2008). The town of Burundi is on Lake Tanganyika, which is still a vast expanse of water, but the shoreline has retreated 50 feet in the last 4 years, and ships can no longer reach the port. Lake Victoria, the biggest of Africa's great lakes, dripped by a vertical inch a day for much of last year. The receding of these lakes along with a change in temperature of the water will now deplete the fish stock. As the fish sources decrease, this limits the amount of fish caught and sold by fisherman. When the regular food source is strained, Africans may turn to hunting wil...