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

Predator Prey Simulation Lab Report

Extracts from this document...


Date: 22nd August, 2007 Lab #1: Predator-Prey Simulation ==> OBJECTIVE: To simulate predator prey interactions and record the numbers of predator and prey in their "ecosystem" and prepare a graph. ==> THEORY: In a stable ecosystem, the number of predators and the number of prey fluctuate, but remain relatively constant. Three factors can affect the cycling of predator and prey numbers: a) The reproductive rate of the prey b) The number of prey eaten by each predator c) The reproductive rate of the predator ==> HYPOTHESIS: Dependent Variable: No. of individuals (predators and preys) Independent Variable: Time (generations) It was hypothesized that predators increase when prey are abundant. Henceforth, preys are driven to low numbers by predation, and the predators decline, whereby the preys recover. Thus, the predator population is dependent on the prey population and this cycle keeps on repeating itself. ==> PROCEDURE: 1. Place 3 "prey" on the table. 2. Toss 1 predator onto the table (evenly dispersed) ...read more.


6. Again, number of prey doubles, if the predator didn't "capture" 3 prey, it died. But a new one moves in for the next round. Keep going, adding to the number of prey each round. 7. Eventually the predator will be able to capture enough prey to survive. The number of predators doubles. Add to the predator population by adding predator cards. Now when the predators are tossed, more than one will be tossed. Any "captured" prey should also be removed. 8. Continue to record the data through 20 generations. ==> RESULTS: => Data Table Generations 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th 15th 16th 17th 18th 19th 20th Number of Predators 1 1 1 1 2 2 1 1 1 1 2 2 3 1 1 2 1 1 2 1 Number of Prey 3 4 4 6 6 4 2 4 6 8 10 10 8 4 4 2 2 4 2 ...read more.


Hence, the predators and preys co-exist in the eco-system. Q. What inferences can you make based on this data? A. When the prey population rises, the predator population also keeps on increasing, as more predators survive by eating at least 3 preys each. However, as the predators increase in number, they start overfeeding on the preys, thus leading to a drop in the prey population. Once the prey population drops, the predator population drops due to lack of food. The cycle repeats indefinitely. From the graph, the one representing the prey population is a typical boom and bust graph, as once the prey population rises and reaches its peak, it suddenly drops, before building up again. On the other hand, the predator population is stable, even though the numbers remain low. ==> CITATION: The computerized graph was created with the help of the following website: * http://www.nces.ed.gov ...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. Marked by a teacher

    Biology: Lab report Germination

    4 star(s)

    It is necessary because plants need photosynthesis to convert water and carbon dioxide into sugar, which is food for a plant. [3] Temperature Experiment Upon testing the variable of temperature, it has become clear that cress seeds germinate much more quickly in a warmer climate. My hypothesis was thus correct.

  2. Bio lab - Oxygen Consumption in germinating and non-germinating seeds

    Limitations and Suggestion: Through this experiment, there were some limitations that we faced while performing the lab. First of all, when displacing the seeds and the beads and when reading the water level at the pipette, the measurements might not in accurate due to parallax.

  1. effect of microwave radiation on lentil seeds lab report

    Conclusion Plants use energy from the sun to grow and make food through the process of photosynthesis in their leaves. Some of the sun's energy is in the form of ultraviolet radiation, a kind of electromagnetic radiation. Electromagnetic radiation is also produced in microwaves.

  2. Biology Industrial Melanism of Peppered Moth Lab

    Calculations of the percentages of light-coloured moths and melanic moths left on light-coloured "tree bark". Trial Number Percentage of Melanic Moths (%) Percentage of Light-Coloured Moths (%) 1 40.0 60.0 2 30.0 70.0 3 23.3 76.7 4 33.3 66.7 5 26.7 73.3 Processed Table 4.

  1. Enzyme Lab

    By using these disks, we were able to keep the same surface area in which the enzyme was exposed to the substrate. Scale The same 100ml graduated cylinder was used in our experiment. This same 100ml graduated cylinder was used at all times to avoid any errors and complications that

  2. Yeast Population

    Type of Sugar: In this experiment, I used the same type of sugar, glucose. There are many types of sugar, and each of them may lead to different results. To keep the results as accurate as possible, I used the same type of sugar.

  1. A Local Ecosystem, Patterns in Nature,Life on Earth,The Australian Biota ...

    If a population of predators is removed from an ecosystem, the prey population may multiply rapidly, leading first to habitat destruction and then to a reduction in the number of prey. * Identify examples of allelopathy, parasitism mutualism and commensalism in an ecosystem and the role of organisms in each type of relationship Allelopathy occurs in plants.

  2. Mitosis Lab report

    These chromatids are then known as chromosomes when separate. In anaphase, the chromatids are not at the sides yet, but rather just separated and heading towards the sides. Telophase: The chromatids have reached each side of the cell, and then the whole cell starts to split.

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