Algae Population Decreasing

The Chesapeake Bay is a 200-mile-long estuary extending from Norfolk, VA to Havre de grace Maryland. On average this bay contains about 68 trillion liters of water. This bay is the largest estuary in North America. It inhabits more than 3,000 species of plants, animals, and fish. “Since the early twentieth century, the Chesapeake Bay has experienced serious environmental degradation. Problems include large reductions in sea grass, reduced amounts of finfish and shellfish (especially oysters and crab), seasonal depletions in dissolved oxygen, and increases in sedimentation.” (Atkins & Anderson, 2003) These changes are brought on by pollution (Eutrophication and Toxic Contamination), development, deforestation, and agriculture. And according

An issue that was present in few specific cities in Maryland have now expanded throughout the entire state. The Chesapeake Bay, a large estuary that has an extremely complex ecosystem that is vital to important habitats and food webs in this area. The Chesapeake bay is arguably one of the most productive environments in the United States. Over the years, this bay has been in a decline of wellness. Pollution, contaminants, and many other factors are destroying the overall well being of these waters, and completely messing up the important ecosystem that has been built there. Although there is an extreme amount of Marylanders fighting for the restoration of the Chesapeake, there are also who are not.

Scientists and researchers began giving a large volume of effort and look into the extremely complex problems that face the Chesapeake Bay. When research for the improving and saving of the Bay’s overall health began it seemed very simple and there were only a couple of problems. The problems included nutrients from agricultural runoff; these nutrients were phosphorus and nitrogen. The combination of the nutrients in the Bay caused a large volume of algae that choked some of the marine life. While bringing in algae the nutrients also killed grasses on the seafloor. These seafloor bed grasses that once covered more than half of the Chesapeake Bay’s floor now only covered a tenth of their original area. Though the estuary was having problems it did not receive the terrible pollution from industries that many large rivers and lakes do in other urban areas (Brown, p. 397).

Types of human activity that affect the Bay's health. Humans either do not see or do not care about the pollution they send into the water. As humans build more factories close to the water or send more waste out of their homes it goes into the Bay causing many problems for the ecosystem. "waste from people's homes, stores, and offices is also treated and discharged into the Bay and its rivers. " (Chesapeake Bay Ecosystem) People do not understand the effects of pollution the Chesapeake Bay Ecosystem says that people believe the water where the pollution is going will dilute the pollution and won’t be as bad. Humans do no understand the problems pollution will cause. The population of the Blue Crabs in the Bay was below average for over 10 years. From 1998 until 2009 the crab ecosystem was so unhealthy they were unable to live and reproduce.

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.

As well as pollution, invasive species are damaging the lake ecosystems and food chains, made fragile by pollution and overfishing. The introduction of a new species throws off the balance of food chains. Some common invasive species include the sea lamprey, Asian carp, and zebra mussels, among many others. Zebra mussels have dramatically influenced and affected stable food chains by reducing the amount of zooplankton and phytoplankton. This presents a problem, as fish mostly feed on the drifters, and so they go hungry and die, leaving no food for larger fish to prey on. In addition to underwater disruption, it affects us as well, but only slightly. Plankton and algae especially are the most productive aquatic producers of oxygen, and by the decreasing population, we lose oxygen as well. The sea lamprey is also a problem, though it is not so influential to ecosystems as the zebra mussel.

The bay has fifty major rivers and streams that drift into it. Nitrogen and Phosphorous are rapidly getting released into the bay. Most of the Nitrogen and Phosphorous comes from agriculture, air, and sewage. The excessive nitrogen and Phosphorus degrade the bay's water quality. Each year roughly three hundred pounds of polluting nitrogen gets into the Chesapeake Bay. Just like the Everglades the Chesapeake's water is in danger.

Even though, fertilizers are needed to supply essential nutrients to the growth of plants; an excess of them is one of the major issues contributing to pollution in the Chesapeake Bay Watershed. Fertilizers are mainly composed of two elements: nitrogen and phosphorus.(4) Throughout the years, millions of pounds of this nutrients are applied all around the Chesapeake Bay Watershed; everything not absorbed by the soil or taken up by plants eventually reaches the Chesapeake Bay through storm-water runoff. This nutrients end up creating algae blooms in the water, which reduce the amount of sunlight available to underwater grasses; not allowing plants to photosynthesize and produce the food they need to survive. Algae then decomposes creating dead zones killing fish and other species since oxygen is needed for any organism to live. (5)

Impervious surfaces are a problem because they don’t let the water seep through. The water travels over top these surfaces because they are solid. Paved roads, sidewalks, patios, and roofs are all impervious. This is harmful because the storm water builds up speed on impervious surfaces and can cause flooding. They also alter the amount of precipitation

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

To begin, there are many types of human activities affecting the health of Chesapeake Bay. Residential developments have replaced wetlands, forests and meadows, taking away habitats of the native wildlife. Overuse of natural resources has caused the degradation of foods necessary for wildlife in the ecosystem. Intensive hunting practices have caused the extinction of several species in the area. Soil damage as a result of fertilization has contaminated nearby water supplies, causing damage in the Bay. Point-source pollution as a result of industrial businesses has also

Our watershed, the chesapeake bay stretches more than 64,000 square miles and is home to about 18 million people.The bay provides us with a lot of things like fishes,salt and water for farming etc. But, the bay is starting to get polluted and many organisms in the bay are dying because of sediments, algae blooms etc.

The main rivers of the Chesapeake Bay is the Susquehanna, Potomac, James, Rappahannock, Chester, Nanticoke, Patuxent, and the Choptank rivers (Sprague et al 2000). The main rivers of the Chesapeake Bay watershed send about 51 billion gallons of freshwater into the Bay each day (Chesapeake Bay Program n.d.). These rivers are homes to many fish, amphibians, invertebrates, and other animals. Not only do aquatic animals live in these rivers, plenty of aquatic plants live there too (Chesapeake Bay Program n.d.). There are many factors that could affect the health of the Chesapeake Bay including litter, debris, sediment pollution, chemical contaminants, and any man made objects (Chesapeake Bay Program n.d.). Any litter and debris will work its way up to the Bay from the rivers and smother any grass beds along with bottom dwelling creators and add chemical contaminants to the water. Any excess nutrients that come from urban runoff or vehicle emissions will cause harmful algae to grow which blocks sunlight and does not allow plants to grow due to low oxygen dead zones

The Virginia General Assembly enacted the Chesapeake Bay Preservation Act in 1988 in an effort to promote “the general welfare of the people of the commonwealth.” The act is effective in 84 different localities throughout Virginia. This act was designed to have a positive impact on water quality of the bay itself, and also water throughout Virginia that feed into the bay. Along with improving water quality, it was designed to still allow reasonable development to continue taking place. The act is designed around the theory that land can be used and developed in a way that minimizes negative impacts on water quality. There is a balance between state and local economic interests and water quality that is implemented by a cooperative partnership between the state and Tidewater local government. This partnership helps reduce and prevent nonpoint source pollution.

The population of many fish species have decreased drastically through the years and, even with current regulations,