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Impacts of pollution on the chesapeake bay
Impacts of pollution on the chesapeake bay
Impacts of pollution on the chesapeake bay
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Introduction
What is your topic/issue within that topic?
Eutrophication is a concern in the Chesapeake Bay. Eutrophication is caused by excessive amounts of nutrients. Excessive nutrients in the bay have negative effects on the bay's ecosystem. The extra nutrients make the environment unbalanced. The extra nutrients cause a chain reaction that eventually kills most of the organisms in that area. This is what is known as a dead zone.
What is your personal interest in the topic?
This topic is interesting to me because it is a very local issue. I eat the seafood out of the Chesapeake, I fish in many of its tributaries, and I visit many sights built around this watershed. I live in Lancaster County which is focused on in many studies because of how much manure the live stock in this area produces. Lancaster County produces more than ten billion pounds of manure annually. (Runoff and The Chesapeake Bay)
What background information would an average reader need to know about your topic?
The Chesapeake Bay is becoming a dead zone due to excessive amounts of nutrients. These nutrients feed phytoplankton which is a type of very small plant that floats. This phytoplankton in turn blocks sunlight needed by underwater grass that grows on the bed of the Chesapeake Bay. When phytoplankton die they sink to the bottom of the bay and decompose. This decomposition creates low levels of oxygen in bay. Low levels of oxygen mean that certain types of species can no longer survive in what is known as the dead zone. Populations are plummeting due to the excessive amount of nutrients, and if these nutrient levels are not reduced the dead zone will continue to grow larger.
What is your research question?
What are the biggest causes of the dead zone in ...
... middle of paper ...
...?
Excessive nutrients from agriculture, development, and industry are harming the Chesapeake Bay. These excessive nutrients harm the habitat for many of the bays species. On top of the habitat being depleated, overfishing and diseases are also hurting the bays species. Nutrient loads can be reduced with the help of lawmakers to put a cap on the emissions allowed in the environment. If this is done the dead zone will start to recede, but the time and money need to be spent in order to save the bay.
Works Cited
Baker, William C., and Tom Horton. "Runoff and the Chesapeake Bay." GreenFILE. EBSCO, Nov.-Dec. 1990. Web. 1 Mar. 2014.
Cerco/ASCE, Carl F. "Response of Chesapeake Bay to Nutrient Load Reductions."GreenFILE. EBSCO, Aug. 1995. Web. 6 Mar. 2014.
Powledge, Fred. "Chesapeake Bay Restoration: A Model of What?" GreenFILE. EBSCO, Dec. 2005. Web. 1 Mar. 2014.
Nitrogen and nitrates relate to Hypoxia via the process of eutrophication. Since Nitrogen is a limiting nutrient in most waters, the added input of nitrate causes massive growth in algae. The algae rapidly consume all available N, and once the nutrient is limited again, the alga dies en masse. As the alga decomposes, oxygen is depleted in the water. This lowers dangerously lowers the level of dissolved oxygen in the water, which harms living organisms in the area. Small organisms and organisms that are immobile or unable to escape low-oxygen areas are particularly vulnerable. Hypoxia and resulting “dead zones” are harmful to local fishing and shrimping industries and algal blooms hurt the tourism industry. Hypoxia has lead to a decrease of about 25% in the brown shrimp habitat, forcing shrimping operations further offshore. As the hypoxia issue continues to grow, negative human effects will only increase. Since nitrate runoff from ag. has been proven to be the dominant source of hypoxia, policies could be enacted to effectively deal with “point-source” pollution. This makes enacting environmental policy more easily adapted, possibly included in past policy such as the Clean Water Act.
This ad is directed to many people in the Chesapeake Bay region because there are tons of pollution each year that are destroying the nation’s largest estuary, or part of a body of water where the fresh and salt water mix, and are also killing the Bay’s crabs, oysters, and fish, which is a huge industry in the area and also something the state of Maryland is known nationally for (Environment, p. 8). Pollution is destroying the Chesapeake Bay every single day, however now people are taking steps in the right direction to fix this problem but many people fear that time has run out.
The Chesapeake Bay is the largest estuary in the United States. It holds 18 hundred trillion gallons of water. The Bay is about 200 miles long, and is home to more than 17 million people. The importance of the Chesapeake Bay is incredible; two of the United States’ five major North Atlantic ports – Baltimore and Hampton Roads – are on the Bay. (Chesapeake Bay Program, n/d). The Chesapeake Bay provides shelter and food to all living things in the surrounding area. Both, people and animals, use the Bays resources every day and have done so for centuries.
The Maryland Blue Crab is an essential part of the Chesapeake Bay; from the food chain of the creatures in the water, to the business side of the thriving demand for the crab during the hot summer months, but there is no denying the fact that the crab is just as important alive as it is when it is being harvested by local fisherman. By becoming more informed of the impact the crab has on Maryland’s bay and on the people who live around it, people can take bigger steps in making sure the crab will always be around for decades to come.
The Chesapeake Bay is the nation’s largest estuary with six major tributaries, the James, the Potomac, the Susquehanna, the Patuxent, the York, and the Rappahannock Rivers, feeding into the bay from various locations in Maryland, Virginia, Pennsylvania, and the District of Columbia (Chemical Contaminants in the Chesapeake Bay – Workshop Discussion 1). These areas depend on the Bay as both an environmental and an economic resource. Throughout the last 15 years the Chesapeake Bay has suffered from elevated levels of pollution. Nitrogen and phosphorous from wastewater treatment plants, farmland, air pollution, and development all lead to reduced water clarity and lowered oxygen levels, which harm fish, crabs, oysters and underwater grasses (Key Commission Issues 1). There are other types of pollution in the bay such as toxic chemicals, but because nutrient pollution is the most significant and most widespread in the Bay its effects are the most harmful to fisheries. Nitrogen and phosphorous fuel algal blooms which cloud the water and block sunlight from reaching underwater grass beds that provide food and habitat for waterfowl, juvenile fish, blue crabs, and other species (Blankenship 11-12). Algae plays a vital role in the food chain by providing food for small fish and oysters. However, when there is an overabundance of algae it dies, sinks to the bottom of the Bay, and decomposes in such a manner that depletes the oxygen levels of the Bay (11). The reduced oxygen levels in the Bay reduce the carrying capacity of the environment and these “dead areas” sometimes kill off species that can not migrate to other areas of the Bay, such as oysters (11). Increased abundance of algal blooms also led to the overabundance of harmful and toxic algae species and microbes such as the microbe Pfiesteria, which was responsible in 1997 for eating fish alive and making dozens of people sick (12). The heightened awareness of diseases that can be contracted through consumption of contaminated fish also has an economic impact. Therefore, the excess levels of nitrogen and phosphorous have fueled an overabundance of algal blooms, which has reduced water clarity and lowered oxygen levels, affecting many species within the bay and ultimately the industries that rely on these species.
The Chesapeake Bay is a large estuary located on the east coast of the United States. The bay is over 200 miles long and goes through Delaware, Maryland, New York, Pennsylvania, Virginia and West Virginia. The bay has much to offer the locals. Many locals have made a career out of harvesting the bay's sea food. The bay's harvest and many of its other attractions bring tourists and in turn revenue for the area. Oysters and blue crab are a big part of the culture in the bay area. However, these organisms are in danger and need help.
The Chesapeake Bay is a large bay that stretches from Maryland to Virginia, fed by many rivers and streams that run from as far north as New York to Virginia and West Virginia.5 It is home to a plethora of plants and fish species, many of which the people of the area fish for food and supplies. The pollution present in the Chesapeake Bay is affecting the livelihood of both the fishermen and the fish – the less the fishermen haul due to the death of the species they catch, the less they get paid – and as consumers of these fish, we are consuming the toxins as well.
The Chesapeake Bay is the largest estuary in the United States .It holds 18 hundred trillion gallons of water. The Bay is about 200 miles long, and is home to more than 17 million people. It has been on earth for millions of years and has survived many different events. The importance of the Chesapeake Bay is incredible; two of the United States’ five major North Atlantic ports – Baltimore and Hampton Roads – are on the Bay. (Chesapeake Bay Program, n/d). The Chesapeake Bay provides shelter and food to all living things in the surrounding area. Both people and animals use the Bays resources every day and have done so for centuries.
... the residual effects of pollution left behind by both mining in the Chesapeake Bay area around rivers, such as the Susquehanna River in Pennsylvania, that feed into the Chesapeake Bay. Lutz also had quoted John Dawes, now the executive director of the Foundation for Pennsylvania Watersheds, on the damage done to streams and to the aquatic life in the streams. Dawes told Lutz "'we're looking at 4,600 miles of dead streams in Pennsylvania'" in reference to the vitality in polluted regions. This can occur in several ways but the two generally accepted causes are the toxicity levels in the water are too high to support life and the contaminated water is slowly killing off members of the food chains for the aquatic life. In either theory, the death of fish and their food chain caused by AMD is impacting the billion dollar fishing industry that calls Chesapeake Bay home.
Species such as the blue crab, oyster, and atlantic menhaden are three main commercial fishing outputs in the Chesapeake bay, but the recent algae blooms are devastating the harvest numbers of several different species. According to the oyster company of Virginia, over 20 million bushels of oysters were harvested every year during the peak of the oyster rush of the mid 1880’s. These numbers
Globally coastal wetlands are disappearing at an alarming rate, the problem is most of society does not realize the value of these precious wetlands. Coastal wetlands provide an important role in the coastal ecosystem. “Coastal wetlands provide critical services such as absorbing energy from coastal storms, preserving shorelines, protecting human populations and infrastructure, supporting commercial seafood harvests, absorbing pollutants and serving as critical habitat for migratory bird populations”(Anonymous, 2011). Coastal wetlands are an economical asset as well as an environmental one.
...tlanticcity.com>. Irwin, Neil. "Environmental groups pressure chefs on menus." Washington Post June 19, 2002. April 26, 2011 Miller, Michael. "Group says it won't move oyster farm to Delaware Bay" Press of Atlantic City, The. August 3, 2010. Press of Atlantic City online. Atlantic Cape Community College, Mays Landing, April 26, 2011 National Sea Grant Law Center. California Enacts Sustainable Oceans Act. 2006. University of Mississippi April 28, 2011. Naylor, Rosamon L.
Overpopulation is already a major problem in the watershed and urbanization will only make the problems worse. There are already 15 million people living in the Chesapeake Bay Watershed, and if the population continues to grow they predict it will be 18 million by the year 2020 (Ernst, 2013). If the population continues to grow rapidly the Bay will eventually get over crowded with runoff, trash, and human substances the bay will go into a bigger dead zone or become permanent (Forbos,
Smith, Zachary A., and Grenetta Thomassey. Freshwater Issues: A Reference Handbook. Santa Barbara, CA: ABC-CLIO, 2002. Print
The oceans need to be protected because it is where life began and if not taken care of, life as we know it will end. When dangerous substances go into the ocean, ecosystems are suffer and become endangered along with lives of people and of marine life. Surfrider Foundation recognizes the importance of protecting and preserving the quality and biodiversity of the world's coasts because they are truly irreplaceable. There is also historical evidence of ocean pollution being present in the past, but the problem still lingers today. Heal the Bay discovered that,“Did you know there is a DDT and PCB hot spot off the coast of Palos Verdes? This superfund site (which indicates it's one of the most polluted places in the United States), is left over from a 1930's era chemical plant. Because DDT takes so long to break down in the marine environment, it persists to this day, contaminating certain species of fish. There are also highly polluted sediments in the Long Beach area, a sign of the heavy shipping in the port. Heal the Bay works on developing effective capping and removal plans to keep those toxins from spreading” (Heal the Bay). DDT is still highly concentrated in the South Bay area and still contaminating different species of fish. Even after more than 80 years DDT, a toxic insecticide, is still very concentrated and during upwellings, DDT particles come back up and continue to harm marine life. If humans are careless about what is thrown on the floor or sprayed on lawns, it can lead to disastrous affects when it comes to the condition of the ocean's ecosystems, and can endanger life itself leading to a problem that only we can mend.