Homebush Bay Field Study

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Contents * Aim * Background information * Methods * Part A: Looking at the abiotic factors and population distribution * Part B- Interaction in the ecosystem and impact of human activity * Conclusion * Bibliography Aim: To analyse and assess the success of mangrove in colonising the shores of Homebush Bay, to measure abiotic factors and biotic interactions in field study 1 Introduction Homebush Bay is a suburb located Sydney’s inner west, home to sporting complexes, arenas and also Homebush Bicentennial Park. This are all situated in the Sydney Olympic Park.The Parramatta River flows through the Homebush Bay and is home to many species of birds and fish. Sydney Olympic Park was in the top 5…show more content…
Soil pH: 1) Mix barium sulphate, a small sample of salt into water. 2) Record pH level * Describe how you estimated the size of your plant and animal population 1) Split up in groups and assigned to different quadrats 2) Count the amount of seedlings and crab holes in the certain quadrat 3) Determine the distance from the creek 4) Collect each group’s results and found the average and multiplied it by 50. 5) Divide the total area by 50 square metres. 6) Multiply the number of crabs/seedlings with the amount of 50 square metres. 4 * Describe how you looked at the interactions between the species When we were walking around Homebush Bay, we learned about how different organisms formed relationships with each other. This included: Mutualism: This is a relationship that is mutually beneficial for both organisms e.g. termite + protozoa Allelopathy: This happens when a plant releases a chemical to inhibit the growth of other plants. E.g.…show more content…
| Higher | Higher | Lower | Higher . | Lower | Higher | 6 Distribution of an animal and a plant Quadrant No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Total | Total area sampled | Average per metre | Seedlings | 1 | 3 | 3 | 2 | 15 | 23 | 39 | 35 | 35 | 9 | | | | Crab Holes | 0 | 14 | 20 | 22 | 10 | 0 | 1 | 2 | 0 | 11 | | | | Distance from creek (m) | 5 | 10 | 15 | 20 | 25 | 30 | 30 | 35 | 40 | 45 | | | | Part B – Interaction in the ecosystem and impact of human activity Interactions found in ecosystem: Producer | Herbivores | Carnivores | Decomposer | Mangrove tree | Crabs | Crabs | Bacteria | | Snails | Snails | | | Fish | Eel | | | | Fish | | | | Skinks | | | | Foxes | | 7 Human Interactions

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