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

A report on an Ecosystem

Extracts from this document...


A report on an Ecosystem Introduction Ecology is the study of the abundance of life, and the interaction between organisms (biotic features), and their abiotic environment. An ecosystem is a natural environment unit consisting of all plants, animals and micro-organisms (biotic factors) in an area functioning together with all of the non-living physical (abiotic) factors of the environment. Ecosystems vary in size. They can range from something as small as a puddle to the Earth itself. They are also "open" as energy can flow in and out freely. For instance the Earth converts rays from the sun into a number of organic products. An ecosystem is composed of abiotic factors e.g. water, rocks, air, and biotic factors like animals, plants, and microorganisms. Aim In this investigation I will explore the interaction between living things, and their environment. I will also survey the effects on the biotic factors when there is an alteration in the environment. Hypothesis I hypothesise that there is a strong link between organisms, and their abiotic environment. If a certain factor is slightly altered this could affect the population of a given species in a given area. ...read more.


Measure a piece of land 10m x 10m in area using measuring tape, Make sure 10m transect line runs through a selected area where features such as undulation of land and vegetation varies. 2. Using a thermometer measure the air temperature by holding a thermometer 1m above ground level 3. Measure the temperature of the soil by placing a different thermometer in the soil. Dig the instrument into the ground so that it does not fall. 4. Following this collect a soil sample by digging into the soil using a trowel 5. Carefully place the soil in a plastic bag. Tie up the plastic bag so that the soil sample is secure. 6. Walk the length of the transect line, observing the plants and animals along the way. Make a list of all plants and animals species observed. 7. Choose a specific plant species (grass), Form 0.5m x 0.5m quadrangle using measuring tape, and count number of chosen species within this quadrat. 8. Repeat step seven 5 times using different quadrats of the same area in order to justify results. ...read more.


- A number of Primary: Mouse, Dragonfly, Robin, Worm, Wasp - Secondary and tertiary consumers: Dragonfly, Wasp, Stoat, Snake - Parasites: Anopheles Mosquito 1st quad (population) 2nd quad (population) 3rd quad (population) 4th quad (population) 5th quad (population) Total Population in 10m x 10m land (est.)* Ants (without rock) 50 49 24 3 12 552 Ants (with rock) 37 33 20 3 6 296 Ants (with crabgrass) 50 49 24 17 12 552 Ants (without crabgrass) 12 16 10 9 21^ 272 * Sum total of 5 quads multiplied by 20 ^ food had been dropped in this area Note: all initial quadrangles used had both Ants and crabgrass Differences in population after alteration Total Population in 10m x 10m land (est.)* Ants (without rock) 552 Ants (with rock) 296 Difference 552-296= 256 Ants (with crabgrass) 552 Ants (without crabgrass) 272 Difference 552-272= 280 Food Chains Food Web Errors and Uncertainties - Mistake when counting organisms - Presence of humans may have skewed population results Conclusion My hypothesis proved true. When an abiotic or biotic feature was changed in the environment the population of organisms situated in the given area also changed. Via this experiment one can conclude that the biotic and abiotic factors of an environment are inextricably linked to one another. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology 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 International Baccalaureate Biology essays

  1. Biology - Observing the Process of Guttation

    the day may cause plants to grow at different rates because some plants may absorb more or less water throughout different time periods of the day. Observing the plants at the same time is a fair way to obtain data because plant conditions may change as often as every minute.

  2. Ecology Open Investigation Does the geographic location affect the biotic and abiotic ...

    Brown Lake 18 Mile Swamp Terrestrial Vegetation Melaleuca trees Acacia (Brisbane wattle) Lomandra Eucalyptus Casuarina Sundew Leptospermum Black wattle Banksia Casuarina Melaleuca trees Cottonwood plants She-oak Water Vegetation Reeds Rushes Reeds Rushes Blue water lilies Bladderwort Water Birds N/A N/A Terrestrial Birds Masked lapwings Brown honey eater Noisy fryer birds

  1. Population Ecology - Dandelions

    Another aspect may have been walking in a straight line towards the fence. Some members deviated from the straight path that they were supposed to follow for best representation of data, which may have caused slight variant results.

  2. Allelopathy. Open Investigation Will increasing the number of allelopathic sunflower plants effect the ...

    - 25 � Grower's Pride Dwarf Bean Tender Green seeds - 50 � D.T Brown Sunflower seeds - 25 � REKO 6006 100mm STD Black plastic Pots - 1 � Plastic box (L600mm � W400mm �D200mm)

  1. Lung Capacity Fitness Level

    Therefore for this experiment, all participants must weigh between 55 and 65 kilograms. Height Height is big factors that can affect vital lung capacity as the taller you are the bigger your lungs thus enabling you to have a large vital lung capacity.

  2. Credit River Abiotic Feature Study

    Figure 1 Figure 2 Figure 3 Figure 4 *Figures 3 and 4 discount one velocity measurement. This measurement was an anomaly at 0m/s, a significant difference from any velocity data. Not shown here, the anomaly changes the graph's contents and makes statistical analysis much more difficult since the Microsoft Excel

  1. Examine the correlation between soil moisture at different heights up the slope and the ...

    leaf, from where the stem branches off into the leaf, until the tip of the leaf (the last possible point of the leaf at which a measurement can be taken). In order to determine the longest leaf, all leaves must be measured because if they?re not all measured, our recording

  2. (IB) Ecology Observation Report. The tree that Ive chosen to observe from March ...

    27 ________________ Ongoing Observations I was able to implement biweekly observations since April 5, with the five pre-set objectives as the main focus of my observations. A common noticeable point during the observations was that there was little change in the outlook of the tree ?X,? despite the abrupt changes in leaves and flowers of nearby plants and trees.

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