Aquatic Invertebrates: Adaptations and Feeding Guilds INTRODUCTION Global warming and human's authoritative influence on the environment such as deforestation, pollution etc. are taking a bad toll on the diversity of the ecosystem. Global warming which has brought about increase in the temperatures is disturbing the natural cycle of the ecosystem. This has brought upon an increased droughts throughout the world. The droughts and increased heat has had negative impacts on local aquatic invertebrates.
Secondary effects include respiration problems from the plumes of smoke, land slides from soil erosion, and economic losses. As the fires burn large plumes of smoke begin to saturate the air and make the quality of air very poor for breathing. According to (usgs.gov) over 70% of people were affected by respiratory problems from poor air quality in and around the San Diego area during the 2007 wildfires. Another secondary impact of wildfires is soil erosion. Soil erosion occurs when the land is depleted of valuable nutrients making it susceptible to landslides and mudslides in the wet
Oklahoma, Kansas, the Northern Texas, and the New Mexico) which experienced severe soil erosion caused by the effect of windstorms in the 1930s. Lassieur (2009) noted that the term has its origin from WW I, during which the initially known grasslands of the area were converted into agricultural fields. The area had experience dry climates leading to severe drought. Together with the effect of over-cultivation, which occurred in the early parts of 1930’s, the land in the Great Plains ware left bare? This condition made the soil to be more prone to the heavy winds, which blew the loose topsoil in what was described as the black blizzards.
Firstly, the Everglades are an important ecosystem which reduces flooding and replenish aquifers but human actions are having a huge impact on the landscape. The rapid urban and agricultural development in the area has decreased the size of the wetlands dramatically which affects the organisms found there. This is especially important as it is home to several endangered species. Not only that, but invasive species that threaten existing wildlife by preying on or competing with them. According to Everglades.org, they’ve “contributed to nearly 70 percent of extinctions in the United States” and are the “primary cause of species endangerment.” The water itself is a major cause of decline to the area, firstly because of poor water management leading to water levels being too low or too high at the wrong times has caused a decline in many species.
Also, they would dump their human waste into the water and make it even more contaminated so when the people of Jamestown would drink or use the water it would make them ill and even to the point that they died. Within a couple of years they also faced drought which many people died because of starvation. The colony went to desperate measures by forcing the Indians to trade their grain, the Indians didn’t give up easy though as it says in the document ‘some harshe (harsh) and cruwell (cruel ) dealinge (dealings)by cutting of towe (two) of the salvages (Indians) heads and other extremities.” Another reason why the colonist died in the colony of early Jamestown was because of the skills they had. When the first ship arrived in Jamestown they brought over a total of 110 males in 1607. 47 of the men were gentlemen, back then, a gentlemen was a person of wealth who was not used to working with his hands.
Dust Bowl The Dust Bowl was the worst man-made ecological catastrophe during a ten year period of a rainless (during1931-1941) drought and large dust storms caused by plowing, farmers used to grow mostly wheat. The Dust Bowl was result of the worst drought in U.S. history. One hundred million acres of the Southern Plains were turning into a wasteland of the Dust Bowl. Large sections of five states were affected Texas, Oklahoma, Kansas, Colorado and New Mexico. The Dust Bowl was mainly caused by over plowing and a perfect example of “people pushing too hard against nature, and nature pushing back”(Ib’d Dust Bowl,A Film by Ken Burns DVD).Also they needed to produce more wheat to feed American troops during the war and over 200 million acres were plowed up, which caused the land to fall apart(Ib’d Dust Bowl).Also the stock market crash in 1929 caused The Great Depression which caused wheat prices to go way down from $3.00 dollars a bushel of wheat to 10 cents a bushel,(Ib’d Surviving the Dust Bowl,2007).
Common sense says you shouldn’t discover where the edge is by passing over it, but that’s what we’re doing with deforestation and climate change” (553). Desert is considered hot, and now it’s hotter; it also affects the quality of agricultural land. Nature will be destroyed, and the world economy will be going down. Global warming is one of the most challenging environmental problems in existence today. Our life, animals’ life, and plants’ life are becoming worse because we are destroying the environment.
The poisons will kill fish and the reef in which the fish live because there is no precise way to deliver it. The fishermen will dump the poison on the water in a likely spot and catch what floats up. The problem with poison is that it does not choose what it kills, so it kills reefs and poisons the area for new generations, then the fishermen go on to another area to repeat the destruction. [ (Coral Reef Destruction and Coversation) ] 2. Red is the endangered areas In image 2, the most endangered reefs are in areas that are considered “Third World”, where populations have limited access to education.
No water meant that crops wouldn't grow, and animals would die, as well as humans. The problem with this theory is that down river, there was excess food. The men could have been too weak to gather food. Why? Maybe the colonists died because of disease?
It was once believed that there must have been some sort of catastrophic even that wiped out their civilization. Maybe a volcanic eruption, disease outbreak similar to the Black Plague that wiped out a quarter of Europe during the middle ages, or perhaps even war. Scholars and scientists are now looking at the possibility of it being a combination of those things. In the lowland, the Mayans population is believed to have been extremely dense. If overpopulation was a factor, this might help us understand why it diminished so quickly.