According to world wildlife organisation, overfishing occurs when more fish are caught than the population can replace through natural reproduction. Gathering as many fish as possible may seem like a profitable practice, but overfishing has serious consequences. The results may not only affect the balance of life in the oceans, but also the social and economic well-being of the coastal communities who depend on fish for their way of life. According to the research world wildlife organisation, 1.6% of the world’s oceans have been declared as marine protected areas (MPAS), and 90% of existing MPAS are open to fishing. MPAS are important because they protect habitats such as coral reefs from destructive fishing practices.
Have you ever wondered how much salt it takes an ocean to float any substance? Well i have and i wanted to figure that out. Well the thing that makes something float is called density. Density is the weight or mass something has. The weight of salt is the ocean if it was in sodium chloride would be about 120 million tons.
Study Area Determining how water quality affects aquatic creatures includes large study areas. The watersheds of both the Chesapeake Bay and the New River are largely inclusive of multiple county boundaries. A larger study area makes it simpler to come by study samples, as fish are plentiful throughout. Protecting the quality of our watersheds is important because watersheds serve many purposes to both living and nonliving organisms. “These water bodies supply our drinking water, water for agriculture and manufacturing, offer opportunities for recreation and provide habitat to numerous plants and animals.” Pollution is degrading our waters and one of the best forms to study the change in water quality is testing contaminants in fish that inhabit
The Cultural Effects of Coral Bleaching Located in warm, shallow waters, one species is near it’s extinction. Scientific studies has anticipated this for years, but many people do not understand the _damage this obsolescence would have on the environment. An essential animal in the ocean, coral, is, “home to 25% of all marine fish species,” according to The Reef Resilience Network, which specializes in helping save coral. Corals have very special tolerances to things like temperatures, salinity levels, and pollution, which causes coral stress, or bleaching. When bleaching occurs because of the unsuitable conditions, the corals expel the algae living in them, turns white, and dies, When corals die, thousands of sea creatures living around reefs
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.
Be aware of what you are putting into the ocean and what effect it is going to have on marine life. In conclusion, the amount of oxybenzone going into the ocean is devastating. It bleaches the corals, which then harms marine life, upsets the ecosystem, and effects the economy. Even though we may not realize or appreciate them, coral reefs provide so much to our world. Without them, people would have a difficult time going about their day to day lives and would struggle to get
One of the leading causes for reefs to be endangered is due to the invasive lionfish. The lionfish’s impulsive eating habits are threatening our sea life of the reefs and decreasing our fisheries economically. According to Lionfish Hunters, the green side includes the cleaners that maintain the health of the reef and the health of other fish such as “grazers.” The grazers are the parrotfish, goatfish, wrasses, surgeonfish, and tangs. (The Lionfish Hunters, web.) These fish help clean the algae that grow over the reef, lowers the algae levels to support enough oxygen for coral to grow, and to establish efficient space for baby coral.
Contamination with pathogenic bacteria from the human/animal reservoir can occur when the landing place is unhygienic or when the fish are washed with contaminated water. Upon the processing of fish, its exposure to water is a critical part as pathogens may be present in the water used which can cause contamination and spoilage (Shoolongela & Schneider, 2012). Contamination of food can occur because of problems in food production, preparation, storage or cooking. The aquatic environment and soft tissue of fishes make it extremely susceptible to microbial contamination. Contamination commonly occurs in the environment in which the seafood (fish) is usually caught, during harvesting, and preparation (Wekell, Manger, Kolburn, Adams & Hill, 1994).
Assessing the vulnerability of coastal fishing communities to climate change: A case study of pacific sardine fisheries, Japan. 1.Introduction Climate change has a substantial impact on marine resources (Hoegh-Guldberg and Bruno., 2010) and therefore on coastal community. Among the many marine resources, major concerns are mostly shown on fish due to its direct linkage to human food consumption and contribution to the protein intake. Likewise many coastal countries, fish is also one of the major seafood resources exploited in the waters of Japan. Japan, once the world's largest producer and still the major user of sardine fish, relies mainly on landings by her own fleet.
When the surface waters are rich with these materials, they can cause algae to grow, which completes with other organisms for light and other nutrients. This has been a major contributor to the massive loss of life in the Chesapeake Bay waters. The average of phosphate tests were approximately zero and one tenth ppm (parts per million.) The lower the phosphate number, the smaller amount of pollution there is in the water. The average amount of nitrate in the water was approximately zero and nine tenths.
The Chesapeake Bay Oyster Restoration Project aims to help locate a healthy habitat for oysters. The Chesapeake Bay has been affected by the long-lasting drought in Maryland, which influenced the water quality. The drought increased the salinity of the water which has a negative impact on the oysters. According to the National Oceanic and Atmospheric Administration, “the native oyster is an extremely resilient species, able to tolerate wide variations in salinity and temperature—but it has not been immune to the pressures of disease, overharvesting, and pollution in the Chesapeake Bay. As a result, native oyster populations in Chesapeake Bay are at less than 1% of historic levels” (A,& Blue Water Media).
In the article, Sufficiency of Horseshoe Crab Eggs for Red Knots during Spring Migration Stopover in Delaware Bay USA, it is argued that the survival of Red Knots is reliant on the nutrition of horseshoe crab eggs. However, it appears that the overharvesting of the horseshoe crab eggs dictate the Red Knot population during their spring stopover. The management of horseshoe crab eggs will ensure the availability to Red Knots, which are dependent on them for endurance during their migratory flight to the Artic. During the 1990’s it was discovered that a decline in the population of Red Knots occurred, simultaneously with the decline of horseshoe crab eggs. It was hypothesized that this event was significant and was the cause of the waning population of Red Knots.
Since both towns depend on their respective lakes to keep their health and economies afloat, the water qualities of each lakes is of the utmost importance. When an invasive species finds its way into the eco-system it has the potential to cause serious damage, as it did in the town of Lake George. On August 19th, 2010 disaster struck Lake George. The Darren Fresh Water Institute had been conducting a routine eco-survey on a beach near Lake George Village when they found a clam infestation that covered an area of
To those residing on the eastern coast near Maryland, Virginia, and Pennsylvania, the problem of the Chesapeake Bay is obvious. The bay lacks water clarity, has difficulties sustaining aquatic life, and faces population threatening issues like dead zones and algae blooms. There are a myriad of ways in which the bay is polluted, however the most direct link to the bay’s poor water clarity is the overflowing amounts of nutrient and sediment pollution. Bay clarity is crucial, not only for a pretty appearance, but also for the health of the bay grasses and fish living in the bay. Sediment and nutrient pollution is a huge contributor to the poor water quality in the bay.