A local Ecosystem Experiment

To compare and analyses the relationship between biotic factors and the distribution and abundance of the mangroves at Bicentennial Park, Homeboys. Equipment: a) Method : Biotic Factors Instrument How to Measure Alarm Temperature Thermometer Hold the Thermometer from the top end away from the bulb. Walt until the meter stops. Record results and repeat Wind Velocity Anemometer Turn on. Check that screen shows ran/s under the readings. Hold In alarm for 15 seconds then push button to get results.

Humidity Hydrometer Fill the container provided with the meter with water sample and attach to hydrometer. Hold meter in air and take reading Light Intensity Light Meter Turn on light meter. Hold the meter facing down and press button. Record result. Soil Temperature Thermometer Push the Thermometer into the soil and record results. Soil pH Universal Indicator Place soil into Petri dish. Sprinkle Barium Sulfate onto soil. Wait a few seconds and compare color of area sprinkled with soil to color pallet. Water epinephrine Indicator Pour ml of water sample into test tube.

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Place 3 drops on universal indicator and record. Water Temperature Thermometer Place thermometer Into water and record results. Turbidity Turbid meter Pour small amounts of water sample Into the meter. Look down the tube to see If the lines on the meter can be seen. Record where the water lies. Risk Assessment: Could slip and fall. To counter this walk carefully. B) Transect: 1. Record the length of the Transect. 2. Go to the starting point. 3. Moving from the start of the Transect to the end, record the height and distance for each of the vegetation in the area of the Transect. . Create graph to show results. Risk Assessment: Could slip and fall In mud. Walk carefully to counter this. C) Quadrate: 1. Measure mm and spread 10 quadrate every meter. . Count as many crab holes and mangrove seedlings there are in each quadrate and Risk Assessment: Could slip and fall over. Walk carefully. Biotic Factors Scale Result Air Temperature Degrees Celsius Wind Speed Meters per second Humidity Percentage 62% Light Intensity Lug 400 lug Soil Temperature Degrees Celsius Soil Moisture Wet/dry Wet soil PH pH ICC 0. M/s 1 co Water Temperature Degrees Temperature ICC Water pH pH Turbidity NUT INTO Quadrate Quadrate 1 2 3 4 5 6 7 8 9 10 Total Total Area Sampled Paper mm seedlings 0 2 2 2 8 9 31 18250 97 Ion 9. 71112 crab Holes 342413 105 6 1 0 1 14120 12th-no Distance from creek 5 10 1520253035404550 Conclusion In conclusion, the mangroves have a higher distribution away from the high tide area. This is because at high tide, the water moves the salt in the soil and pushes it back where other vegetation’s can adapt. There is a greater amount of mangrove seedlings away from the river because it is too salty.

Adaptations Animal – Ibis The Ibis has many different features which adapt to the environment around it. It has a bold head so when it sticks its head into the mud to grab crabs, its head will not get stuck in the mud and the head will Just slide out. Another feature is its long legs. They are used to stay above the water. It also has long wide toes so that it can walk easily on the mud. Plant – Beaded Glasswort The beaded glasswort has no leaves so it will be able to store a lot more water that if it had leaves. It has no flowers so no more water is lost.

Human Impacts Human impact has had a great effect on Bicentennial Park at Homeboys. There has been a massive change to the landscape over the years. This is due to urban development and the need for economic growth. The building of a large car park which is made of black tar has made a big impact on the park because as the theater heat rises and then it starts to rain, the hot water can be transported into the soil. The loss of the wetlands due to the urban growth is having a negative effect on the local ecosystem.

The loss of the wetlands is also the destruction of habitats of the local fauna like the crabs. As people come through the park, people bring with just leave it there for it to decompose or for someone else to pick it up. More than 1 million people visit the park each year which affects the micrometer and people can trample on the bush. To counter the effects of human impacts, the site is protected by the people. There have been drains built on an angle near the parking area so that the hot water doesn’t burn the wetlands, instead it slows and cools it down then goes into the wetlands.

Contractors who want to build near the area will have to have permits to start working. They have built walkways and paths so that people don’t damage the mangroves and the wetlands. There have been more bins so that people don’t litter in the park and individuals that patrol the area so that people don’t litter and pick up after them and their pets. Discussion At the excursion to Bicentennial Park at Homeboys, we were involved in several first and investigations. The purpose of these investigations was to distinguish between the distribution and abundance of Mangroves in the park.

The investigations that were conducted consisted of 3 biotic factors – air, water and soil. The air section consisted of the air temperature, wind velocity, humidity and light intensity. The water section consisted of the water temperature, the pH levels and the turbidity. The soil section consisted of the soil temperature, soil moisture and soil pH levels. In the experiment we observed that there is an abundance of Mangroves that grow way from the river, and there is a higher distribution of mangroves away from the high tide.

The quadrate experiment demonstrates the abundance of mangroves and the transect experiment shows the distribution on the mangroves. I believe that overall the experiment was accurate and precise. However there are some areas which could have been changed to create a more exact result. For the water and soil areas, it could have been improved if we were able to collect the samples ourselves. The air section would have been changed because before we arrived it rained which would change the humidity levels.