The 101 mile long Conodoguinet Creek flows through about nine different municipalities, so testing for pollution and water quality is extremely important. To figure out the water quality of the creek however, we first needed to identify which tests to do. Realizing what the cause of pollution is, was our first problem. But, using prior knowledge of acid rain and eutrophication in Pennsylvania, we found out that those were, in fact, our main problems/causes of pollution in the Conodoguinet. When figuring out which specific tests needed to be completed in order to get an accurate water quality reading, we discovered that we had to evaluate different macroinvertebrates, test for pH, alkalinity, nitrates, phosphates, dissolved oxygen, etc. and also test the speed and velocity of the moving water.…
To do this, we pulled rocks out of the creek and put them on land. There are three stages of groups, the first group means that the creek is not polluted. The second group means there is some pollution. The third group means that the creek is extremely polluted. For group 1 our group found 59 organisms. For group two, in our study, we found 15 and they were all scoud. In the group 3 we found 27 creatures. This is what we did in station 3 for the creek study field trip.…
The more pollutants in a river denies the ecosystem homeostasis therefore harming the macro-invertebrates. If Cherry Creek were not next to a major city like Denver, with sewage running off into it, then it would probably have a healthier aquatic ecosystem. When we compared Bear Creek and Cherry Creek, Bear Creek had the healthier aquatic…
4. What are the factors that affect water quality of the stream? Are there industrial discharges directly to the…
Ecology is the study of relationships between organisms and their environment which includes both physical and biological factors. Humans have a major influence on ecosystems and this is very important in the waterways of California. The American River has been influenced greatly by humans by mining for gold, pollution through humans themselves, and an immense amount of other things (Becker 1992). We tested the growth of bacteria in the water of the American River and used fertilizer as a treatment to find out if it would make an impact. The high treatment of fertilizer will have more significant of a change in bacterial growth than the control and low treatment.…
Brush Creek is a nice river that we are trying to figure out what kind of pollution and other things in the creek. The purpose is to see if Brush Creek is at the level for people to able to get into it and be safe. My hypothesis is that the creek will have little pollution around the site area. The expected outcomes are that we will find lots of creatures there and the dissolved oxygen levels are high.…
The limitations Michael Berry faced in investigating the causal relations at Toms River was the cancer registry. Berry decided to conduct an incidence analysis of childhood cancer in Dover Township. He found fifteen cases, then he determined the total number of cases pediatric cancer should have occurred in town. His results were there was no childhood cancer cluster in Toms River. However, his analysis was missing specific types of cancers and some recent cases were not updated in the registry—it was running two years behind. Moreover, Berry’s analysis was missing some local children who were treated in New York and Philadelphia.…
Chapin III, F. S., Costanza, R., Ehrlich, P. R., Golley, F. B., Hooper, D. U., Lawton, J. H., ... & Tilman, D. (1999). Biodiversity and ecosystem functioning: maintaining natural life support processes. Washington, DC: Ecological Society of America.…
Introduction: In this experiment, the investigators have attempted to solve the questions of, “How polluted is U-High’s stream?” and, “How can water quality be measured?” They initially believed the creek to be of good quality. Many organisms within the water rely on dissolved oxygen, including fish, macroinvertebrates, and oxygen.…
Ecology is the scientific study, which focuses on the interactions between organisms and their environments as well as interactions with other organisms. Stream ecology is a subset of ecology that observes the interactions between the organisms found within the stream and their interactions with the stream itself. A contributing factor to stream ecology is leaf degradation. Leaves that fall into a stream create a significant impact on the energy flow and nutrient cycling of the stream’s ecosystem. Leaves provide an abundant amount of organic material for many of the organisms within the stream. Decomposed leaves are a particularly important carbon source for…
The ecosystems near the river depend on the relationship from the fresh water to the salt water. The Corps controls a big part of that…
In this experiment, the question being asked was: “What is the water quality of the U-High stream based on the water invertebrates found?” The purpose of this experiment was to determine the water quality of the U-High creek. The data was obtained by collecting soil, algae, and water from the U-High creek and identifying the number and types of invertebrates that were found from the samples. The prediction made was that the U-High creek’s water quality was poor based on the first observations of beer cans and other litter found near it, but the original hypothesis of the water quality being poor is rejected. There were three types of invertebrates found: pollution sensitive, pollution moderate tolerance, and pollution tolerance. Each of these groups resulted in having six different species found in the U-High creek. The pollution sensitive species included caddisflies, riffle beetles, stoneflies, mayflies, snipe larvae, and water penny larvae. The pollution moderate tolerance species included cranefly larvae, dragonfly…
They are pollution tolerant, moderately pollution tolerant, and pollution intolerant. Lots of organisms in the pollution tolerant group can indicate poor water quality, since the organisms can tolerate pollution. A large amount of organisms in the moderately tolerant group can indicate fair water quality. Many organisms in the pollution intolerant group can show good water quality. The groups are based off of their tolerance to organic nutrient pollution. Ecologists take samples of these invertebrates. A big group or absence of a certain invertebrate can help determine water quality. A healthy river has many different types of invertebrates feeding in many different ways. Diversity is a characteristic of stable, healthy ecosystems. If the water quality is low some organisms will not be able to live successfully, therefore the ecosystem will not have as much diversity, and the ecosystem will not be as healthy(River Watch). The sun is an important part of an ecosystem because energy flows from plants to each level of the food chain.(River Watch) Many things contribute into a healthy ecosystem including diversity and energy…
According to the U.S EPA, a watershed is the area of land where all of the water that is under it or drains off of it goes into the same place. On our trip we were able to conduct some experiments on the water. Our group did an experiment on the pH of the river water. The pH was around 7-7.5, which according to the scale is neutral. This number means that the pH of the river water is close to the pH of tap water, but we still probably shouldn’t drink the river water without filtering it first. Another experiment we did in class after the field trip was to calculate the Biotic Index Rating of the river to figure out how polluted the water was. In order to do this we took the number of a certain species living in the water and multiplied that amount by their tolerance level (how much the species can stand pollution). That product was our Biotic Index Value. Next we divided the Biotic Index Value by the total number of organisms. This gave us our Biotic Index Rating, which for the Nashua River ( a tributary of the Merrimack River) was about 5.97. According to the scale given meant that the water quality was good, but might be slightly impaired. I went on this similar field trip in fifth grade, where I did similar experiments . I’m glad I got to go again, because this time the experiments and explanations were much deeper, and my experience out on the river was much more…
Chesapeake bay is having problems with recent algal blooms. This paper will discuss the roles of the organisms in the partial chesapeake bay food chain, The possible effects of a decrease in the algae population on the plant and animal populations, What the causes of this problem is, what is being done to fix it, and what else could be done.…