To determine how two different weed species, A. Pinnata and N. Alba, and their accompanying biotic and abiotic factors live in the fresh water eco-system that has been studied, Jake’s Hole. The investigation that was conducted comprised of taking different samples of data over four weeks from the same four sections of the dam, out of a 1m x 1m square. The final results show that A. Pinnata is predominantly the weed species that inhabits the eco-system compared to N. Alba, where there is very little distribution over the covered areas of the dam.
Introduction:
Background research:
“Ecology is the study of the relationships between organisms and the environments, including: the interactions of living organisms with one another (Biotic factors) …show more content…
Pinnata is from the Salviniaceae family. It is known as a floating plant and can be distinguished by its ferny leaves which can be bright green, turning a red colour when in full sun. A. Pinnata is found in still water such as dams, lagoons, lakes, slow-moving stretches of rivers in sub-costal QLD as far as inland as St George in southern QLD. The optimum living conditions of this specie is a pH of 5.5-6.0, less than full sunlight, temperatures between 20o-25oC and all of the essential …show more content…
Alba is from the Nymphaeacea family. It is an attached plant species and is most commonly distinguished by the dark green circular floating leaves on the upper surface, the flower petals are white, often with a pinkish tinge, and the stamens are bright yellow. The seeds, which are produced in large quantities, are smooth and olive-green in colour. The required living conditions of the Water Lily is during the winter season, growing in the sun within fresh water wetlands, lakes, ponds and canals. It has naturalised in some parts of south-eastern Australia (i.e. in inland New South Wales, in southern Victoria and in south-eastern South Australia).
Aim: To investigate the ecological relationships of the A. Pinnata and N. Alba in a fresh water eco-system- Jake’s Hole.
Hypothesis: If the abiotic and biotic factors of the dam such as the pH level, Light Level, Temperature, Wind Direction and Nutrient level change within the four quadrants of the dam (NW, NE, SW, SE) then the abundance and distribution of A. Pinnata and N. Alba may change because the growing conditions for the species to grow have changed; in the winter season with lowering water levels, high nutrient level of both the soil and water, as well as adequate pH levels.
Methods and Materials:
Introduction:
Background research:
“Ecology is the study of the relationships between organisms and the environments, including: the interactions of living organisms with one another (Biotic factors) …show more content…
Pinnata is from the Salviniaceae family. It is known as a floating plant and can be distinguished by its ferny leaves which can be bright green, turning a red colour when in full sun. A. Pinnata is found in still water such as dams, lagoons, lakes, slow-moving stretches of rivers in sub-costal QLD as far as inland as St George in southern QLD. The optimum living conditions of this specie is a pH of 5.5-6.0, less than full sunlight, temperatures between 20o-25oC and all of the essential …show more content…
Alba is from the Nymphaeacea family. It is an attached plant species and is most commonly distinguished by the dark green circular floating leaves on the upper surface, the flower petals are white, often with a pinkish tinge, and the stamens are bright yellow. The seeds, which are produced in large quantities, are smooth and olive-green in colour. The required living conditions of the Water Lily is during the winter season, growing in the sun within fresh water wetlands, lakes, ponds and canals. It has naturalised in some parts of south-eastern Australia (i.e. in inland New South Wales, in southern Victoria and in south-eastern South Australia).
Aim: To investigate the ecological relationships of the A. Pinnata and N. Alba in a fresh water eco-system- Jake’s Hole.
Hypothesis: If the abiotic and biotic factors of the dam such as the pH level, Light Level, Temperature, Wind Direction and Nutrient level change within the four quadrants of the dam (NW, NE, SW, SE) then the abundance and distribution of A. Pinnata and N. Alba may change because the growing conditions for the species to grow have changed; in the winter season with lowering water levels, high nutrient level of both the soil and water, as well as adequate pH levels.
Methods and Materials: