Mangroves At Homebush Bay Bicentennial Park. How Mangroves Work, How To Test For Mangrove Abiotic And Abiotic Features.

2392 words - 10 pages

A Study of the Badu Mangrove Community at Sydney Olympic ParkAbstractA investigation took place at a large mangrove community called the 'Badu Mangroves'. The interactions of organisms and the Badu Mangrove ecosystem were observed. While experiments were carried out to determine the abiotic ( e.g. temperature, humidity, soil pH ) and biotic ( e.g. number of seedlings distributed throughout a certain area, adaptations of animals ) features in the Badu Mangrove community.AimThe aim of this report was to explore the abiotic and biotic features concerning the growth and placement of grey mangroves (Avicennia Marina ) in the Badu Mangrove community at Sydney Olympic Park. The surface area of the Badu Mangroves is approximately 38 hectares, its location is Latitude: 33˚51'48.7"S Longitude: 151˚04'32.07"E Factors that influence the mangroves' lifestyle were also investigated.MethodAbiotic factorsThe air and water temperature of the Mangrove site was measured by using a thermometer. A thermometer was obtained and it was held in the air for a few minutes until the reading became stable. The temperature was then recorded.When measuring humidity, a psychrometer was used, along with a information chart. The psychrometer contained a wet bulb which measured the wet temperature while the normal thermometer on the psychrometer measured the air temperature. The dry temperature was subtracted from the wet temperature. The result of this subtraction was then interpreted by using a table and this determined the humidity.The light was measured in a spot where there were vegetation which had leaves and long trunks. This was done to observe how much light could penetrate through the vegetation. A light meter was obtained and it was turned face down in a spot were there was moderate light to ensure a fair result. The light meter then showed the light intensity in units of flux. The results were recorded.Wind velocity was recorded by using a wind meter. The meter was placed high up in the air to prevent and sources that could generate or block wind movement. The reading produced on the meter was recorded.A sample of water was taken from a creek. A thermometer was then obtained and placed immediately into the water to prevent any heat loss or transfer of heat from the water. The thermometer was left there until a reading was steady and the temperature was recorded.Turbidity was measured by using a turbidity tube. This tube measures the cloudiness of the water. The sample of creek water was obtained and it was placed into the tube until the lines at the bottom of the tube was no longer visible. The reading of the water level was then recorded, it was interpreted by using a table which determines the turbidity of the water, the units were recorded in NTU ( Nephelometric Turbidity Unit )The amount of dissolved oxygen in the water was measured by using an Aqua dissolved energy meter. The wire which connected the measuring tube was placed into the water until there...

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