# Coastal Marsh Restoration Causes Environmental Succession (Allogenic) In Louisiana Wetlands

by TheChessGym | 15 Sep 13:20

Coastal Marsh Restoration Causes Environmental Succession (Allogenic) In Louisiana Wetlands

Today we learned about Louisiana's efforts to restore marsh and coastal lands that have been diminished over the years resulting from natural erosion and tropical weather events. The effects of this man-made restoration effort will have both pros and cons. The coastal wetlands form a natural barrier to approaching tropical systems such as hurricanes and tropical storms. Restoring these barrier islands is necessary but doing so requires the influx of tons of fresh water into previously salt-water fisheries. The influx of fresh water poses a drastic change to the biomes and ecosystems that formed the niche of saltwater fisheries. Hence, species like the white shrimp, brown shrimp, oysters, speckled trout, redfish, flounder, and other popular salt-water delicacies are immediately adversely impacted. The populations of these species die, decrease and decline. The reduction in these populations immediately impacts the revenue of Louisiana Fishing industry which is a major source of revenue for the state.

Environmental succession is inevitable and represents a healthy change in our ecosystems. Due to the damage caused by Hurricane Ida, new biomes and niches will result which in turn will promote the growth of new diverse numbers of species. The changes resulting from the restoration of marshlands will also promote and drive the broadening of a newer and richer habitat that will provide a new home for additional species to expand and thrive.

The fish that will be mostly affected by this is brown and white shrimp and all gulf, sheepshead, minnow, oyster, diamond killifish. These sea creatures will be pushed away from their home. This is a bad thing because they will be harder to fish and sell.

The species in the image are gulf killifish, sheepshead minnows, oyster killifish, diamond killifish, brown shrimp, and white shrimp. These species will be affected from coastal restoration projects because their environments and ponds will become isolated, and fish that evolved to rely on saltwater from the Gulf will either die out or be forced to move. Forcing a species out of its home is a common occurrence during environmental succession.

 Louisiana flood control levees have deprived coastal wetlands of the deposits it needs to survive. Without action, Louisiana stands to lose as much as 4,120 square miles in the next fifty years, along with the storm protection that such land provides to coastal communities and some of the nation’s most economically important ports. There is a consequence to re-establishing the coastal march because it will mix freshwater and saltwater which will have an adverse impact on the seafood industry. This is an allogenic succession. The aquatic life like such fish as the Gulf killifish (male/female), Sheepshead minnow (female), Brown shrimp and white shrimp, Diamond killifish (male/female), the Mosquito fish (female), and the Oyster killifish are some of the species that was adversely affected by the re-establishment of the wetlands. By establishing new coastal wetlands and re-connecting the Mississippi River to its former floodplain, the state is currently attempting to reverse this tendency. But how will the state's coastal environment, which has made Louisiana second only to Alaska in domestic seafood output, be impacted by these freshly formed marshes and the rapid influx of freshwater to the coast? By examining how salinity affects species composition and food web dynamics in both natural and artificial wetlands, the research team hopes to find an answer to this question. Pond trap samples help the researchers determine species composition and food web dynamics in both natural and created marshes. The ultimate objective is to pinpoint the elements that foster a healthy environment and productive marsh creation initiatives. These data will be used by the team to create a model that forecasts how marsh food web structure, function, and resilience will be impacted by river diversions. 

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Restoring Louisiana lost coast, marsh land and barrier island can cause an ecological succession. The fresh water from the river with sediments will be flush out to the gulf to restore the barrier island. This can cause an allogenic succession where saltwater fish will be replaced with freshwater fish species. The barrier island play’s a crucial role for the safety of Louisiana from hurricanes but restoring these barrier islands can have a negative impact on the fishing industries. In conclusion the disruption of such ecosystem for the cause of restoration weighs a heavy price of consequences and decisions that are up to whether the benefits far outweigh the cost of such restoration.

golf killi fish Females may also grow 5–8 cm larger than the males and may exhibit more aggressive behaviors during the mating season. Once fully grown, F. grandis adults are omnivorous, feeding on algae and vascular plants, small grass shrimps (Palaemonetes), microcrustaceans (copepods), and mosquito larvae.

sheepshead minnow: they pass it off as king crab because it is cheaper

oyster Killifish are carnivores. Depending on the size of your fish, frozen foods such as brine shrimp, newly hatched brine shrimp nauplii, daphnia, mysis shrimp, mosquito larvae and bloodworms are all good choices.

Today we learned about environmental population of specie who were endangered but now reproduce rapidly to last for the next 100 years. This species is the native black bear. We have also discussed the animals that were native to Louisiana and what was not. Discovered more knowledge on the different types of fish and weather conditions that is leading Louisiana coastal line to erosion.

The seafood that are in this picture are Gulf killi(female/male), sheepshead minnow(female/male), oyster killi fish(female/male), diamond killi fish(female/male), brown shrimp and white shrimp. Louisiana is losing alot of land to water. Manmade things are being made to prevent us losing so much water. Fresh water and salt water are mixing and affecting our seafood industry.

The coastal marsh restoration plan causes environmental succession this is an attempt at allogenic succession which is a new term that we have recently learned which is the succession of an ecosystem by the succession of the environment (abiotic factors). This plan made by man is driven on good intent but has its pros and cons restoring the barrier will help reduce the severity of storms such as Hurricane Ida which was the most recent large hurricane this being a pro because if a storm like Hurricane Ida was lowered in severity even by one category then many homes both for people and animals could have been saved and their lives as well. A con of this is the impact it will have on the wildlife because while going through with this plan fresh water and salt water will mix killing life which also damages the fishing industry because of the great decrease in population of many species of fish and crustaceans.

The costal restoration project will have positive and negative effects on the Louisiana ecosystem. The land will act as barriers for hurricanes. The barriers will slow down hurricanes, decreasing damage inland. However, freshwater is needed to restore the cost, but the project is implemented by the Gulf of Mexico which is saltwater. Species such as Gulf killifish, Sheepshead minnow, Oyster killifish, Diamond killifish, Brown shrimp, and White shrimp will be driven further out to sea to settle in water with a higher salt content since the Gulf has been diluted. This is an example of secondary ecological succession because there is a community already established in the Gulf of Mexico, and this community will be negatively impacted by the restoration project.Gianna Williams

The species in the image are gulf killifish, sheepshead minnows, oyster killifish, diamond killifish, brown shrimp, and white shrimp. They will be greatly affected from coastal restoration projects because their environments and ponds will become isolated, and fish that evolved to rely on saltwater from the Gulf will either die out or be forced to move. This is known as environmental succession. It happens all the time as mankind progresses the environment regresses.

Every 4-5 years or so the spillway is opened which in turn mixes the fresh and salt water. This may seem minor and a tiny in connivance, but this is life or death for the animals and their ecosystem. For an example the white and brown shrimp’s population deplete a lot when the water is mixed because saltwater animals cannot survive in freshwater. There are also many fish species that die because they didn’t get far enough away for the freshwater to survive the mixing. This also affect the people that make a living off catching these fish because there isn’t enough anymore to make a real profit.

* Restoring Louisiana lost coast, marsh land and barrier island can cause an ecological succession! The barrier island play’s a crucial role for the safety of Louisiana from hurricanes but restoring these barrier islands can have a negative impact on the fishing industries. The LDWF estimates there are currently between 700 to 1,000 in the state of Louisiana. Gulf Killifish, sheep's head minnow and oyster Killifish and diamond killifish. Brown shrimp and white shrimp. The fish that will be mostly affected by this is brown and white shrimp and all gulf, sheepshead, minnow, oyster, diamond killifish. These sea creatures will be pushed away from their home. the state's coastal environment, which has made Louisiana second only to Alaska in domestic seafood output, be impacted by these freshly formed marshes and the rapid influx of freshwater to the coast.

For nearly a century, wetlands have been slowly vanishing along Louisiana’s coasts. Wetlands such as marshes and swamps have been one of Louisiana’s most unique features, differentiating it from every other state in the United States. These wetlands (along with barrier islands) have protected our coast against strong winds storm surges that could come from hurricanes or any tropical storm. Since the 1930s, Louisiana has unfortunately lost nearly 2,000 square miles of coastland. Reasons for this is the levees and the spillway that contain the Mississippi River. Naturally, the river would flow out into the Gulf of Mexico and carry sediment. This sediment would settle along the coast and build new land along the marshes. Without marshes being naturally built, some communities have been supporting trying to restore it themselves. Other ways Louisiana is being affected are the populations of some species such as the Louisiana Black Bear. There is currently an estimate of 700-1,000 black bears in Louisiana according to the LDWF and now, Louisiana black bear are listed under the Endangered Species Act. If we managed to restore the Mississippi River to its former glory, there would be downsides to it too. Yes, it would be better for the wetlands and it would give us more protection, but it will also impact the fishing industry. The Mississippi River and Gulf of Mexico are two different bodies of water, one being fresh water, the other being salt water. After the spillway was built, fish and other animals in the ecosystem adjusted to years of not much fresh water pouring into the gulf. When the spill way opens however, it impacts the saltwater fish that the fishing industry relies on. Some of these fish are the gulf killifish, sheepshead minnow, oyster killifish, diamond killifish, brown shrimp, and white shrimp. If the river is restored, constant freshwater would flow into the gulf, and it may take years for these fish populations to adjust.

Coastal Marsh Restoration causes environmental allogenic succession in Louisiana wetlands. Allogenic succession is when external abiotic factors change the environment. This project of restoration can cause fish like Gulf Killifish, Sheeps head minnow, Oyster Killifish, Diamond Killifish, Brown Shrimp & White Shrimp to suffer. The fresh water will be flushed out letting saltwater in. This project will cause the decrease in population because fish would have to attempt to strive with saltwater. Species will decrease and die. The species of fish will be limited making the market for fish limited to people which causes a deduction in the market.