Mississippi River Delta Region Analysis

Silvershell Beach is the home to many different aquatic species and other forms of wildlife. Last lab block the class and I went into the ocean at Silvershell beach and took seven different seine net samples. With each sample we took, we noticed a variety of different organisms. As we moved around different areas of the ocean, we would come out with changing species and number of species that we did not find in other areas of the water. Species we found included sea robin, hermit crabs, moon jellies, minnows, shrimp, eels, and more. Sample one and two were taken from around the same area in the water and there was a reappearance of three of the species. In sample one we found hermit crabs, minnows, moon jellies, and a sea robin. In sample two

The great flood of the Mississippi river in 1927 prompted the severing of class divisions and the extension of racial oppression. The flood caused over $350 million in property damage, 246 flood-related deaths, and a home loss of 130,00. Many african americans fled north to escape the racial oppression that resulted from the disastrous flood. Police held black african americans at gun point until they agreed to help raise the levees to protect buildings and houses from rising flood waters. After African americans started refusing to work, one got shot in the back and all the african americans fled north to escape the hardships that were brought about when the river flooded. After Hoover won presidency, he did not keep his promises to ensure

The Callinectes sapidus also known commonly as the Maryland Blue Crab, is a crustacean found in the Chesapeake Bay. The blue crab is found in aquatic environments, most often in estuaries. It characterized by it’s blue claws. The blue crabs undergo a life cycle of: zoeae, megalop, juvenile, and adulthood. The blue crab’s hard shells serve as a protective barrier for external dangers. The Callinectes sapidus comes from the order of Decapods, whereby it’s carapace has now evolved to be better suited for swimming. Of interest is the blue crab’s mating

Fertilizer is causing great harm to oceans and the Gulf of Mexico is a great example. Excess nitrogen causes algae to bloom, which later die depriving the area of oxygen killing marine life. One example of a way to reduce fertilizer burden in the Gulf Of Mexico is using nitrogen more efficiently. According to “Can Farming Changes Help Shrink The Dead Zone In The Gulf,” “By embracing practices that increase efficient use of nitrogen, farmers could cut nitrogen runoff from their farms by 20-25%, (Janet Pelley). This reduction is not enough to affect the dead zone unfortunately. There needs to be an even sharper decrease in nitrogen concentration in the water to make a difference. Some of these practices to use nitrogen more efficiently include,

The article I chose relates to the dead zone found in the Gulf of Mexico every year. There is a location in the Gulf of Mexico known as a hypoxic zone, which is an area with depleted oxygen levels. This is a result of nutrient run-off from the Mississippi/Atchafalaya River Basin. The rivers receive a large amount of nutrients from many sources, including but not limited to, fertilizers from farmlands and golf courses, to urban runoff, sewer treatment plant discharge, and atmospheric nitrogen deposits.

Recently, various user groups have relied on horseshoe crabs for bait and nutrition. While concerns have arisen that the horseshoe crab populations are declining, management of the American species of horseshoe crabs has been surrounded by controversy (Davis et al., 2006). Historically, horseshoe crabs have been considered a “trash-fish”, not worthy of resources to establish their population data. As a result, reporting regulations and harvest restrictions associated with this fishery have been lacking (Baker et al., 2004).

Hypoxic zones also known as “dead zones” refers to decreased levels of oxygen in the water. Marine life die of suffocation due to the low oxygen concentration in these dead zones, which affects animal life in the ocean. These hypoxic zones occur particularly along the Gulf of Mexico, East Coast, and the Great Lakes. According to Cheryl Lyn Dybas, a journalist who specializes in marine sciences, stated that there are about 146 coastal dead zones worldwide (Dybas). In addition, since the 1960s the number of hypoxic zones has nearly doubled every passing decade (Dybas). Although dead zones can develop naturally, scientists are alarmed about how these zones have been augmented by human activity.

The American horseshoe crab (Limulus polyphemus) has persisted largely unaltered for millions of years (Smith et al. 2006), and has ancestors that date back 450 million years (Swan, 2005). Limulus polyphemus inhabits the eastern coast of the United States (Goode & Wahle, n.d., Swan, 2005), from the Yucatan Peninsula to the Gulf of Mexico (Shuster, 1979; Moore & Perkin, 2007). Limulus polyphemus are found within estuaries, coastal embayments, and on the inshore continental shelves near the mouths of estuaries, usually in waters that are less than 30 meters deep (Botton et al. 2003; Sekiguichi & Shuster, 2011). Four species of horseshoe crabs exist worldwide; however, Limulus polyphemus is the only species found in the United

Theories are an integral part of sexuality counseling. Theories provides the framework for counselors to intervene, set goals, and promote change within the therapeutic relationship (Long, Burnett, & Thomas, 2006). Unfortunately, without these theories, counselors would not be much help to their clients.

The Mississippi Delta progrades into the Gulf of Mexico through lobes. The first lobe, the Sale Cypremort, formed at the mouth of the Mississippi River, and prograded southward in the western part of the mouth area. The following lobe, the Cocodrie, formed in the eastern part of the mouth. The next three lobes, the Teche, St. Bernard, and Lafourche, formed in succession. Located between these lobes was a depression, where later the Plaquemine lobe and Balize Delta formed. Figure 3 shows the location of these lobes and delta. Each of the lobes life spans were approximately 1700-2500 years. The lobes all went through phases of regression and transgression. Each phase lasted around 1000 years.

On the Mississippi River about three hundred miles up from the mouth, there is a navigation lock that allows ship to drop out of the river. In open resistance of nature they can descend as much as thirty-three feet, then go to the west or south. This suggests a relationship between a river and adjacent terrain. Cajun country is the adjacent terrain. The apex of the French Acadian world, forms a triangle in southern Louisiana, its base the Gulf Coast from the mouth of the Mississippi just about to Texas, with its two sides converging up by the lock. Local parishes like Pointe Coupee Parish and Avoyelles Parish, the people of these parishes would call this the apex of the Cajun country. The Atchafalaya River is 137 miles long.

Mississippi was first explored from Spain by Herndon De Soto who also discovered the Mississippi river in 1540. In present day the United states army corps is trying to cut off the last connection between the Mississippi river and its natural backwater habitant in the state of Missouri by building a new 1500 foot levee across the opening at the bottom of the new Madrid floodway it will stop water from reaching its highest 75000 acres of floodplain. The Mississippi river then as it is now is still being used as a big factor when it comes to shipping goods up and down the river it is also home to many entertainment attractions such as riverboat rides for tourist and also natives of the state one of the rivers most greatest forms of entertainment is the river casinos. The delta which was

In the course of the past year or so, the world has under gone immense natural disasters. Including but not limited to: hurricanes, tsunamis, wildfires, blizzards, and more. These unfortunate events all have a source of which they occurred. At the same time, the world’s oceans have under gone less noticeable but apparent changes as well. These changes include temperature variations, heightened acidification, intensified salinity, and more. However, a specific issue is the effect of Indiana’s activities impacting ocean life through nutrient and sediment pollution. There is a multifarious number of reasons that could affect ocean life, even in Indiana, which one will discuss throughout this report. One will describe sediment runoff, the

The aim of the present study was to test the hypothesis that the invasive red king crab, Paralithodes camtschaticus, may hamper capelin recruitment through egg consumption, by carrying out fieldwork studies (2005, 2006), laboratory experiments (2011), and applying models of consumption. To explore the response of the predator to prey density, crab abundance and capelin egg density were estimated in stratified study areas. An exponential decay model was used to estimate stomach evacuation rates of capelin eggs in red king crab stomachs, and the average evacuation time estimated was 5.38 h at 2.9°C. The average evacuation time was applied to a consumption model where uncertainty in input values was assessed by Monte Carlo simulation. Estimated

Sediment collected from the riverbank as the river flows downstream is also a problem; it increases the turbidity of the river, and this makes it difficult for plants to receive the necessary sunlight needed for survival. When these plants die, there is less food for fish and other river animals. Bacteria levels also rise in the water, because it can cling to sediment very easily. When there is more sediment, there are more places for the bacteria to collect. (Helsel & Mueller, 2009). All of these problems are occurring as the water is flowing along the river banks, collecting even more sediment, and pollutants as it travels downstream and deposits into the Gulf of Mexico. When all of this sediment, nitrogen and bacteria flow into the Gulf of Mexico, it causes changes in the water there. The increase in the level of nitrogen causes plankton to grow faster. When the plankton decomposes it takes a large amount of oxygen out of the water. The bacteria break down the decomposed plankton, which releases carbon dioxide, taking increasing levels of oxygen out of the water in the Gulf. Eventually the level of oxygen decreases to a point where most living organisms cannot survive. Some animals flee while other plants and animals that cannot leave usually die. This is referred to as the Dead Zone in the Gulf of Mexico. (Gulf of Mexico; NOAA, 2009). With an expected increase in the size