Antarctica Fish Lab

This lab was conducted with the purpose of confirming the trait of homeostasis among goldfish. During the experiment, it was recorded that the fish would increase gill movement when placed in colder water two out of the three trials. However, the results showed no significant difference in gill movement in various temperatures of water. This has very little effect on the broad field of science since our only three trials were performed and may have included human error in the trials.

Once the experiment was concluded, aged water was slowly added to the temperature- stressed fish in order to raise the temperature of its water. This helped to return its environment back to normal conditions.

The procedure for this experiment followed the steps as shown in the flow chart (Figure 1) and will be expanded upon here. The oxygen-measuring probe in the test chamber was first turned on and required 10 minutes to warm up. During this time, two empty containers had 200mL of fish water added to them and then each was weighed using a scale that was tared to zero before use. Two pairs of goldfish were then collected from the large tank #1 in the lab room using the fish net provided, and one pair was placed in each container. Then, the containers were reweighed separately and the original weights were subtracted from the new weights in order to determine each pair of goldfish’s weight. Two trials were conducted and in each trial, each goldfish pair was subjected to two conditions, first a control condition where no factors were introduced, followed by an experimental condition where they were exposed

The results of the study found that there was a significant difference in Daphnia’s response when exposed to a cold stimulus in the form of crushed ice, compared to room temperature water. Thus, the null hypothesis was rejected and the alternate hypothesis was accepted. These findings could be due to the fact that Daphnia magna are cold blooded and were trying to swim away from the ice cubes that were attached to the bottom of the mesocosm opposite to the counting area. These results support the idea that Daphnia experience a negative thermotactic reaction when exposed to colder water compared to room temperature water.

During freezing winter periods, the lake and its shores are covered with ice. While some plants adapt to winter by seed dispersal or going into a period of dormancy, others are unable to withstand the freezing weather (Andrews, 1996). Below the sheath of ice in the winter, the lack of oxygen poses a much greater threat to fish than lack of food as underwater plants do not have enough light to produce food and release oxygen (Minnesota Department of Natural Resources, 2010). Coupled with their cold-blooded nature, fish and other marine animals are able to survive by becoming less active or hibernating at areas with a unique microclimate. Fish may sink to the lake bottom, hide under logs, or sand. These areas have different amounts of oxygen depending on the depth and the rate of water circulation (Minnesota Department of Natural Resources, 2010). Extremely low oxygen levels could kill fish (Reebs, 2007). This lake has no aeration system such as a

It is suspected that the freezing point is 64.1oC. Due to the short temperature plateau, It is difficult to determine if the freezing point occurs at during the interval (6:00-6:10). However, it appears to be have been the most reasonable determination for freezing point in comparison to the rest of the plot.

The climate for all the sea creatures were pretty cold at first, but as the glaciers started to melt and slip off from the Snowball Earth era, the waters got extremely warmer over

Emperor Penguins are found in Antarctica, and have to have a high tolerance of the cold and hot whether to be able to survive the whether conditions of the Antarctic.

Did you know that The Arctic ocean was once called the frozen ocean. There was a long thought about no oceanic life in the arctic. Due to the cold temperatures, sheets

Conclusively, after completing this lab I reject the original hypothesis stating that the higher the temperature of the individual’s hand the more the Mysterious Red Fish will react. The inconsistency in the data recorded throughout the lab led me to believe that it is incorrect. To complete our quantitative data we did 3 trials. In those trials my partners and I measured the length of the Mysterious red Fish when it was lying flat and then measured it again after it reacted on our hands. The data proved to be unreliable, when the fish was on Alex’s hand 4cm of the 9.1cm long fish was in contact with her hand in the first trial. In the second trial, it went down to 3.5cm on her hand and went up to 6cm in the last trial. Furthermore Erica’s

A Beta fish Methods: The date the column was set up was approximately September 16, 2016. The experiment lasted

Organisms can live in harsh environments without being prone to danger. The Arctic includes the world's smallest ocean being the Arctic Ocean, as well the world’s largest island, Greenland. In regards to the Arctic, its ocean is covered in floating sea ice throughout the year. The climate of the Arctic varies a lot during the seasonal changes. In the months in the winter season, the sun doesn’t pass the horizon in the Northern Arctic, which in result the temperature significantly be depleted in some areas to -60 degrees Celsius, but to differentiate, during the warmer months of summer, temperatures can cause some areas of the Arctic to melt, due to temperature reaching of 20 degrees Celsius. In the Arctic, the Environmental conditions vary

One of the important thing I have learned is how tuna stay warm with cold hearts. how animals react to rapid temperature changes, knowledge that’s becoming more essential as the earth warms. Pacific bluefin tuna are top predators renowned for their epic migrations across the Pacific Ocean. They are also unique amongst bony fish as they are warm bodied (endothermic) and are capable of elevating their

Antarctica is one of the coldest and darkest environments on Earth. Below these Antarctic ice sheets lay some of the largest subglacial lakes and it is within these lakes that scientists believe contain some of the most unique microbial ecosystems on earth. Antarctica’s subglacial lakes are some of the most oligotrophic, or nutrient deficient places on the planet (Karl et al, (1999). It is this scarce landscape that inherently affects the organisms that are present. Significant research has been undertaken by scientists to better understand the physical processes of how these subglacial lakes are created, and how this then affects the hydrology of these lakes. The amount and type of life that is said to live in these lakes is determined by the hydrology that occurs as a result of the various physical processes. Both biodiversity and biomass with respect to the types and amounts of organisms present is restricted due to the amount of ice depth and the lack of nutrients for these organisms like archaea, bacteria and viruses.

water should be cold enough to freeze over, but it surprisingly never does(Berke 10). In