Field Study Of Biotic And Abiotic Factors Affecting Abundance And Distribution Of Mangroves In Sydney Olympic Park Mangrove Reserve.

1728 words - 7 pages

Field study of biotic and abiotic factors affecting abundance and distribution of mangroves in Sydney Olympic park mangrove reserve.Mangroves are plants that live between the sea and the land, where they are flooded by tides.The word 'mangrove' is given to either an individual species of plant or to a group of unrelated plants, living in areas that are flooded by tides. So a mangrove may be a tree, shrub, palm, fern or grass - all of them able to live in salt water.The Badu mangrove reserve is home to two types of mangrove the Avicenna marina and Aegiceras corniculatum. This ecosystem is a unique ecosystem which has many biotic and abiotic features.AIMThe aim of this report will be to detail all the biotic and abiotic factors and how they are measured, including changes in abiotic factors over time, the estimated abundance of one plant an animal species, the distribution of plant species and the interactions between organisms and the adaptation to their environment and human impacts.METHODABIOTIC FACTORS HOW THEY ARE MEASURED AND THE CHANGES OVER TIME.WATER SALINITY1.PRESS THE On/Off button of the salinity meter.2.Hold the probe in the water sample so the hole in the plastic cylinder is under water. (do not submerge the black portion of the probe)3.Record your reading in ppk.(parts per thousand)Sediment temperature1.Carefully push probe 5cm into sediment and leave for 2 minutes.2.Record the temperature whilst the probe remains in the sediment.3.Clean the probe and return to the container.Air temperature1.Hold the thermometer away from the direct sunlight for 2 minutes.2.Take measurement by holding thermometer at eye level.3.Record temperature.4.Carefully place the thermometer back in the container.Relative humidity1.Take the reading from the dry bulb thermometer.2.Take the reading from the wet bulb thermometer.3.Subtract the results of the wet bulb from the results of the dry bulb reading to calculate the difference.4. Find your difference column, using the table in the middle of the hydrometer (1-6)5.Follow this column down until level with the dry bulb reading to get your result of % humidity6.Record this resultSediment PH1.Place a sediment sample (the size of a 10 cent piece) onto the Petri dish2.Sprinkle barium sulphate over sediment3.Place 2 drops of universal indicator solution into the barium sulphate4.Wait 30 seconds then match the colour of the powder to the colours on the chart5.Record the sediment PHLight intensity1.Hold the light sensor (white disk) facing the ground.2.Turn the dial until you get a reading. ( if the reading has x10 above it multiply your reading by 10)3.Record your reading in lux.4.Turn the dial to off and place in container.Turbidity1.Look down the turbidity tube at the lines on the bottom.2.Pour a small amount of water into the test tube.3.Check if you can still see the lines.4.Pour more water in.5.When you can no longer se see the lines take the water level reading from the outside of the tube. If the water level...

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