During this experiment, there were three pH levels tested: consisting of 5, 7, and 9. The hypothesis was if the pH was closer to neutral or seven, then more of the brine shrimp eggs would hatch. This hypothesis was proven to be correct. The trials with a pH of 5 had no hatched eggs after 24 hours. The pH of 7 had results of 42, 234, and 150 - averaging to 142. The results of the pH 9 were significantly lower with 34, 115, and 81, with an average of 76. The more acidic solution was not a suitable environment for the brine shrimp, and they were not expected to hatch. This means that the ocean’s and lake’s pH levels needs to be controlled. Acidity levels that are too high could eventually kill ghe wildlife. The 7 pH is equal to a neutral alkalinity level; therefore, it was expected to have the highest amount of eggs hatch. According to brine shrimp hatching guides, they hatch best in neutral environments. The 9 pH definitely had fewer …show more content…
This study, which was published in 2012 by the California State Science Fair, focused more on the growth factors of the brine shrimp in different pH environments. Although the findings of this particular study resulted in showing the ability of brine shrimp to thrive in higher pH habitats, this research project showed a larger population resulting in the basic and acidic tanks rather than the neutral. Many factors could have affected the results, producing the contradictions between the two projects. The pH levels of the 2012 study were only varied after the samples were already hatched. The current project focused on the ability of the eggs to hatch in the various pH solutions. There is a possibility that developed brine shrimp may have better chances surviving in acidic and alkaline environments, but these conditions may be too difficult for the delicate process of hatching. Human error could also play a role in the contradicting
To begin the lab, the variable treatment was prepared as the Loggerlite probe, used to later measure oxygen consumption, warmed up for approximately 10 minutes. To prepare the variable treatment, 200ml of Sodium and Ammo-lock water was measured in a container and a pre-prepared “tea bag” of tobacco was steeped in the room temperature treated water until a light yellow color was visible. After preparing the tobacco solution the preparation for the live goldfish began as two beakers were filled with 100 ml of treated water. Each beaker was weighed before addi...
Millions of people come from across the world to visit Seaworld every day without thinking about the lives of the animals behind the scenes. Why would they have concerns? From Seaworld’s commercials to the website, they convince the general public that Seaworld is the place to go to see the happy sea animals perform. If Seaworld is such an ecstatic place, what excuse does Tilikum, their greatest well known orca whale, have for the three attacks on trainers? The documentary “Blackfish” was created by the director Gabriela Cowperthwaite because she questioned herself after realizing Tilikum's odd behavior over time in captivity, and if there was any indisputable parts to animal captivity?
"Consider the Lobster" an issue of Gourmet magazine, this reviews the 2003 Maine Lobster Festival. The essay is concerned with the ethics of boiling a creature alive in order to enhance the consumer's pleasure. The author David Foster Wallace of "Consider the Lobster” was an award-winning American novelist. Wallace wrote "Consider the Lobster” but not for the intended audience of gourmet readers .The purpose of the article to informal reader of the good thing Maine Lobster Festival had to offer. However, he turn it into question moral aspects of boiling lobsters.
Jan de Heem painting, “Still Life with Lobster” is an oil painting with a bright red lobster that catches the viewer gaze into this beautiful dinner from the late 1640s.The color scheme used in this painting is analogous since it uses relatively close hues. In the painting, the lobster is on a silver platter but it has been left untouched. Surrounding the focal point of the painting is luxurious fruits including grapes, cherries, peaches, berries, oranges, and a half peeled lemon. To the left of the lobster is an overturned silver goblet. This particular style of painting is known as a vanitas form of painting. The artist is using a luxurious left over meal to show even the most expensive desires of the world doesn’t last for eternity. The
The procedures for this experiment are those that are referred to in Duncan and Townsend, 1996 p9-7. In our experiment however, each student group chose a temperature of either 5 C, 10 C, 15 C, or 20 C. Each group selected a crayfish, and placed it in an erlenmeyer flask filled with distilled water. The flask’s O2 levels had already been measured. the flask was then placed in a water bath of the selected temperature for thirty minutes, and then the O2 levels were measured again.
The location is one of the most critical factors to analyze thoroughly because it helps predict whether the sales of the choosing location will be good or not? Although the Boiling Crab is in the growth stage, it still has to focus on new locations that the owner plan to extend to these areas. As I mentioned in the introduction, the owner plans to open the Boiling Crab in four new locations soon.
The ineptitude of the monogastric animals to fully hydrolyze the phytic acid resulted in several problems. For instances, supplementation of inorganic phosphate, which is expensive, is needed to compensate with the inability of the monogastric animals to utilize phytic acid. The supplementation of inorganic phosphate in the animal feeds is crucial to meet the animals’ dietary requirements. Furthermore, the unutilized phytate-phosphorus causes the concentration of phosphorus in the animals’ excreta increases and this will indirectly contributes to serious phosphorus pollution complication (Pen et al., 1993; Volfova et al., 1994). Cyanobacterial blooms, hypoxia and death of marine animals have been reported to occur as a consequence of the eutrophication of the rivers by this excessive phosphorus (Mallin, 2000; Naqvi et al., 2000). In fact, phytic acid has been well-known for ...
During the summers the oxygen content atop the water normally has a salinity level consistent with “more than 8 milligrams per liter”; but when oxygen content drops down to “less than 2 milligrams per liter” the water is then known to be in hypoxic state (CENR, 2000; USGS, 2006). Hypoxia is the result of oxygen levels decreasing to the point where aquatic organisms can no longer survive in the water column. Organisms such as fish, shrimps, and crabs are capable to evacuate the area but the fauna that cannot move either become stress and/or die. Due to this, many call the hypoxia zone the “dead zone” (Overview, 2008; USGS, 2006).
Ocean acidification is the decrease of pH in the oceans due to absorption of CO2 in the atmosphere (Fabry, 2008). Over the past three hundred million years ocean pH levels have been 8.3, however in the past 200 years the pH level of oceans’ have reduced to 8.1, an increase of 25% in the acidity level (Bednaršek, 2012). The CO2 in the ocean reacts with water to form carbonic acid and consume carbonate ions. As a result a lot of marine species are suffering high mortality rate, lower reproduction and the disruption of ecosystems and food chains. Moreover, over 22 million tons of carbon dioxide goes to the ocean every day (Buffie and Carr, 2010). If the rate of CO2 emission in the ocean is not reduced, the predicted ocean CO2 concentration will be 200% by the end of this century (Buffie and Carr, 2010). This paper will explain two major lines of evidence for ocean acidification. The first evidence is based on the impacts of acidity of ocean on calcifying organisms and the second one is acidosis and impact of CO2 on the physiological process of marine species (Silver Sunbream Fish). Lastly the paper will also touch on the potential pitfall correlated with the conducted experiments, which might have hindered t...
With carbon dioxide levels continuing to rise over the past few decades (fig. 1) and now into the future, concern has been brought to what is happening to the carbonate chemistry of the oceans. Because of these changes in chemistry, the ocean is becoming more acidic. Along with climate change, ocean acidification may be one of the greatest threats to our planet. The higher the ocean’s acidity level goes, the lower the calcium carbonate levels will drop. Even though this is a big scale issue, my goal is to focus on and underline what these changes will mean for the marine life that depend on the calcium carbonate in seawater. I will go in depth with specific regards to a study regarding pteropods or sea butterflies.
In absence of calcium carbonate, coral and shellfish can’t survive. The ecosystem of ocean depends on these organisms because they offer a large source of food at the bottom of the food chain. They need to be abundant in order t...
Al Dhaheri, S. and C. Drew. 2003. Guide for the Management of the Brine Shrimp (Artemia Franciscana) at Al Wathba Wetland Reserve. Terrestrial Environment Research Centre, Abu Dhabi, UAE.
Le Quesne, Will,J.F., and John K. Pinnegar. "The Potential Impacts of Ocean Acidification: Scaling from Physiology to Fisheries*." Fish and Fisheries 13.3 (2012): 333-44. ProQuest. Web. 21 Apr. 2014.
The purpose of this lab was to study the response of the genus Daphnia to chemical stimuli and to examine human responses to different stimuli. A stimulus is an incentive; it is the cause of a physical response. Stimuli can have a physical or chemical change; an example of a physical change is a change in temperature and sound. An example of chemical change would be changes in hormone levels and pH levels. Muscular activity or glandular secretions are responses that occurs when stimulus information effects the nervous and/or hormone system. Daphnia is a genus; it is a small crustacean that lives in fresh water. The body of the daphnia is visible and its internal organs are clearly seen thus it was chosen for this exercise. The
The experiment measured the survival rate, the growth rate, and the size of the brine shrimp at the time harvested in various environments. To obtain these measurements, three environments were created: sea water, brackish water, and freshwater. For this experiment the scientists used 5 liter plastic buckets. Every two days, half of the water from each bucket was discarded and new water, of each respective salinity, was added into each bucket...