• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Investigate the Factors Effecting the Distribution of Living Organisms in Freshwater Ponds

Extracts from this document...

Introduction

Investigate the Factors Effecting the Distribution of Living Organisms in Freshwater Ponds Hypothesis My aim is to investigate the factors effecting the distribution of living organisms in freshwater ponds. I think the abiotic factors, which will effect this, will be: * Temperature * pH levels (% of hydrogen ions) * Light intensity * Conductivity * Chemicals from acid rain * Fertiliser (pollutants) * Oxygen levels * Carbon dioxide levels * Space and shelter I think the biotic factors, which will effect the distribution of living organisms, will be: * Influence of people * Predators * Prey * 'Food' availability * Plants - producers * Competitions between organism for example food, space and 'mates'. Either intra specific competition or inter specific competition. Intra-specific competition occurs when two or more individuals of the same species strive to obtain the same resources, which are of limited supply. Inter-specific competition is the same as intra-specific but the conflicts are of different species. Although all the abiotic and biotic factors would effect the distribution of living organisms, I think the 3 main factors, which will effect the distribution the most are: 1. Conductivity 2. ...read more.

Middle

The energy produced is used for growing and repairing cells and without this energy the living organism could not survive. If there is a low level of oxygen in the water then respiration will still take place but not aerobic but anaerobic respiration. This means that there is no oxygen available and it is not the best way to convert glucose into energy as it does no produce nearly as much energy, the equation for it is: Glucose Energy + Lactic acid If oxygen in the water stays at a low level then soon the living organisms will die. ii) Decaying matter is using the oxygen and releasing carbon dioxide in the process iii) Bacteria which decomposes the organic matter, for example dead leaves and faeces, also uses the oxygen and produces carbon dioxide in the process. iv) There is a low rate of photosynthesis, if this happens then the living organisms would be in a serious situation. This is because if the oxygen levels are and there are a lot of living organisms in the water then anaerobic respiration might take place, which will kill them. ...read more.

Conclusion

This would then jeopardise the quality of living for the living organism. Temperature is connected with light intensity because thermal energy and light both come from the sun. The rate of photosynthesis can be affected by temperature. At about the temperature of 45 degrees Celsius the heat destroys the chlorophyll enzymes. However I don't think that this will be a major factor in this investigation as the mean temperature is 10.6 degrees Celsius in the Isle of Wight. Conductivity means how many ions are dissolved in the water the main salt in the sea is sodium chloride, which constitutes about 85% of the sea salts. Some others are magnesium, calcium and potassium. These minerals are essential for healthy growth in the plant. If the plant is not healthy then it can not photosynthesise Salinity varies from nearly zero in continental waters to about 41 parts per 1000 in the Red Sea, a region of high evaporation, and more than 150 parts per 1000 in the Great Salt Lake. In the main ocean, salinity averages about 35 parts per 1000,1 ?? ?? ?? ?? ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Green Plants as Organisms section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Green Plants as Organisms essays

  1. Marked by a teacher

    The roles water in living organisms and water as a habitat for organisms

    5 star(s)

    Water is therefore described as having a high latent heat of evaporation. Animals use this property of water by using excess body heat to evaporate water from their surfaces, resulting in them transferring a lot of energy into the environment but only losing a little water.

  2. Comparison of two ponds at the end of the stream, and how different factors ...

    Dragonflies- dragonflies can fly at up to 50 kph and capture other insects in the air, while flying. Dragonflies are preyed upon by fish, reptile's frogs and birds. Female dragonflies lay they eggs in or near water. Eggs hatch into nymphs, commonly known as mudeyes.

  1. Investigating the abiotic factors that affect the size of Ivy leaves in shaded and ...

    An excited electron from photosystem II passes to an electron acceptor and down an electron transfer chain to photosystem I, which is at a lower energy level than photosystem II. This loss of energy allows the synthesis of a molecule of ATP.

  2. The Aral Sea Disaster

    Finally, we should consider a situation where there is an increasing river flow to the Aral Sea. In that case, the water volume and area would both grow while the salinity gradually fell. The rate of the process would depend upon the amount of river run off.

  1. Investigate the feeding relationship of invertebrates in ponds of different light levels.

    if there is no light the plants would be able to photosynthesise and would die, resulting in the death of invertebrates as they would have no food to eat, and would probably have a great effect on the freshwater pond food web.

  2. Investigating difference in Abiotic Factors and species diversity in two ponds.

    * I predict the acidity will be more acidic in the meadow pond due to the fact that more rainfall reaching the pond as there is fewer trees which reduce interception which increases surface run-off. As I mentioned I will be taking this data during the day in which carbon

  1. An Investigation into Species Diversity with distance along a Pingo.

    The light metre will be used 20 times in each zone to obtain readings for light intensity. An average reading will then be taken to increase accuracy. Auger This will be used to form a soil transect which will illustrate the depth of the soil and the amount of chalk in the soil.

  2. Absorption Spectrum of Chlorophyll.

    The extract was then centrifuged in the IEC- 7000 at 12?C at 3000 rpm for 15 minutes (a longer time of 20 minutes was used for the okra extracts). The residue was discarded and the supernatant was transferred to another 50 ml tube (with the sides wrapped with aluminum foil)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work