Water Temperature And Its Influence On Water Chemistry

The CTDEP collected bottom- dwelling fish and invertebrates and compared the quantity of organisms and number of species with the levels of oxygen in the water. Both of these studies confirmed that severe effects occurred whenever levels of oxygen fell below 2.0 mg/l. Large reductions in the numbers and types of aquatic life present were noted. The lab experiments recorded reductions in both growth and increase in death.

Temperature also affects oxygen content. Warmer water contains less dissolved oxygen than colder water and therefore oxygen concentration will change throughout the year as the weather and temperature changes. Another factor affecting oxygen concentration in the turbulence or movement of a body of water. In a fast moving body of water where the water is constantly moving, bubbles aerate the water and the dissolved oxygen content is often higher than a still body of water. Dissolved oxygen concentration is also affected by altitude. At higher altitudes oxygen is not dissolved as easily due to the higher

For both ponds, the procedures are identical to each other. Submerged the YSI 55 DO Meter about 6 inches into the clear water to take an initial DO measurement at the surface, and did the same thing when it was lowered 2 feet into the water to take initial DO measurement at the bottom. The meter took the DO, % DO Saturation, and temperature at both the surface and the bottom of the pond. Four water samples were taken from the pond and collected in viewing tubes. Used the tube on the left side as a control and in the second tube, the group added Phosver 3 Phosphate Reagent

Dissolved Oxygen, pH levels, Temperature Change, Fecal Coliform, BOD, Nitrate, Phosphates, Turbidity, and Total Solids were each tested in the stream at least one time. If more time and enough supplies were given, then certain tests should be done more than once. Temperature Changes should be tested every other month because it is quick and a change in temperature can affect the health of the organisms living in the stream and therefore the quality of the stream. Temperatures can also drastically change in a short amount of time and there is a large difference in water temperatures in summer and winter. Another test that should be done every other month is dissolved oxygen because it is related to the temperature of the water. Cooler waters have a greater capacity for dissolved oxygen than warmer waters. This test is important because due to human activity and industrial processes, can increase water temperature and therefore decrease the dissolved oxygen levels. Certain organisms living in the stream need a sufficient amount of dissolved oxygen to survive. Another test that should be done more often is the

The velocity of the water or speed of water determines the dissolved oxygen levels in the water. The higher amount of dissolved oxygen the better the water is to the aquatic life in the creek. Because fish need dissolved oxygen to survive, low level of dissolved oxygen will be bad for aquatic life. Also the creek would not be healthy with low amounts of dissolved oxygen. The results of the test had an average of 9.8 . This is the average number a normal and healthy creek should have.

Then it suddenly drops at point 3 and have a gradual slightly decrease until to point 6 and it slightly rise again. The level of dissolved oxygen in water is affected by the temperature. When the temperature increase, level of dissolved oxygen decrease. Therefore, the level of dissolved oxygen in varies point change with the temperature. The level of dissolved oxygen at point 6 where is near the city is lowest which is 4 mg/L. However, for perch survive, there should be more than 4 mg/L of dissolved oxygen in the water. Therefore, the level of dissolved oxygen probably the reason of perches die. Also this is suitable the situation that dead perches found in the city

Lastly, the seasonal changes could affect photosynthesis. For example, if it gets too cold, the rate of photosynthesis will decrease. Proteins are folded into a very particular shape, and this allows them to bind efficiently to the molecules of interest. At low temperatures, between 32 and 50 degrees Fahrenheit – 0 and 10 degrees Celsius – the enzymes that carry out photosynthesis do not work efficiently, and this decreases the photosynthetic rate. Also, at medium temperatures, between 50 and 68 degrees Fahrenheit, or 10 and 20 degrees Celsius, the photosynthetic enzymes work at their optimum levels, so photosynthesis rates gauge high. Farther more, at temperatures above 68 degrees Fahrenheit, or 20 degrees Celsius, the rate of photosynthesis

There are many ways in which increased levels of greenhouse gasses can affect marine life adapted to colder and warmer water, and many ways marine life can adapt to the effects of climate change whether that be beneficial in the case of phytoplankton or detrimental in the case of Adelie penguins loosing numbers in the south pole.

Fire can alter stream temperature in several different ways. First, and probably most short lived, is the immediate temperature spikes caused by the active burning. Second, fire has the potential to reduce overhead canopy cover, thus increasing light penetration and absorbance by the water. Finally, additions of large amounts of sediment (which increases the turbidity of water bodies) can increase the amount of light absorbed thereby increasing the water temperature.

When dissolved oxygen concentrations drop below a certain level, aquatic life mortality rates will increase. Sensitive freshwater fish such as salmon can’t even reproduce at levels below 6 mg/L. In the ocean, coastal fish begin to avoid areas where DO levels is below 3.7 mg/L. Below 2.0 mg/L, invertebrates also leave and below 1 mg/L even benthic organism show reduced growth and survival rates.

The main abiotic factor of an environment that can effect temperature and factors that can effect this include the season and location of the environment. During the thermosensitive period, variations in temperature increase the activity of aromatase, helps to convert sex steroids from male to female sex hormones (androgens to estrogens). If one had a low level of aromatase during the thermosensitive period, the individual will develop male characteristics and high

Fire can alter stream temperature in several different ways. First, and probably most short lived, is the immediate temperature spikes caused by the active burning. Second, fire has the potential to reduce overhead canopy cover, thus increasing light penetration and absorbance by the water. Finally, additions of large amounts of sediment (which increases the turbidity of water bodies) can increase the amount of light absorbed thereby increasing the water temperature.

An experiment was conducted to test whether or not excess CO2 in the atmosphere had any effects on atmospheric temperature and water acidification. Two bottles were filled with tap water, and capped with a thermometer. One bottle had nothing added, the other had CO2 gas added. The bottles were placed near two desk lamps. The temperatures were recorded over a 1-hour period at 10-15 minute intervals, and the pH levels of the water in the bottles after the time were recorded. The experiment was conducted to obtain sample data on the effects of excess greenhouse gases such as CO2 in the atmosphere. The results in temperature showed a

The research project I chose to study was titled, Current Browning of surface Waters Will Be Further Promoted by Wetter Climate, and was published by the Norwegian Institute for Water Research, Department of Ecology and Genetics, Department of Aquatic Sciences and Assessment, Finnish Environment Institute, Aquatic Biology and Toxicology, and the Department of Forest Ecology and Management. This project includes fifteen years of data, beginning in 1990 and ending in 2013. These departments were trying to understand why there is an increase in the browning of surface waters. This research project includes data from Fennoscandia (Norway, Sweden, and Finland), the United Kingdom, the northeastern United States, and southeastern Canada. They discovered that the browning of surface waters is due to increasing terrestrial dissolved organic carbon concentrations. They proposed that the browning of surface waters is a concern because of four primary reasons. Reason number one is that brown surface waters could release more greenhouse gases into the atmosphere. This will also lead to higher water costs, because of the processes that water distributors will have to put the water through to cleanse it. Alternatively the browning of surface waters will also affect freshwater productivity because of how it limits light penetration. Lastly, these conditions will promote anoxia and consequently limit oxythermal habitats (Wit 2016).

Weather a surface is hydrophobic or hydrophilic largely depends upon surface chemistry. Each and every surface has energy which is proportional to area .For liquids surface tension is identical to surface energy. And we know everything moves towards reducing its energy therefore drops tend to be spherical. But what about droplets on a solid surface. Drops form an inverted cup like structure and the angle made by drop surface with the solid surface is called the contact angle. Every surface has Surface Energy. There is surface energy or surface tension between air-solid-liquid. Contact angle is defined as the equilibrium angle made by liquid surface with the solid surface.Young’s equation describes the force balance between the interfacial tensions formed at the solid–liquid–vapor contact line.