• 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...

Introduction

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.

Middle

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.

Conclusion

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)

    stopped growing and are the same as Day 7 Same as Day 2 Results in cm, showing average growth of plants Control 1 Control 2 Light Dark Warm Cold Day 1 n/a n/a n/a n/a n/a n/a Day 2 n/a n/a n/a n/a n/a n/a Day 3 0.5 0.4 0.7

  2. Mitosis Lab report

    Comparison In both structures, the chromatids carry the same amount of DNA as each other, which is a major similarity. However, even though the late prophase chromosome is called a chromosome, it contains two chromatids, while the anaphase chromosome contains only one chromatid.

  1. effect of microwave radiation on lentil seeds lab report

    The same can be said for the number of leaves where the number of leaves for lentil plants for control have a mean of 2.7 where the mean is 4 for lentil plants put under radiation for 10 seconds. Once again this shows a rather realistic difference which is further proved by the accepted H0.

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

    In mutualism, both organisms benefit from the relationship. Lichen is an example of a close mutualistic relationship between an alga and a fungus. The alga produces food through the process of photosynthesis. The fungus provides a place for the alga to live.

  1. 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.

  2. Botany Lab Report

    The root should be long enough to reach the wet are underground but it couldn't be proved as we couldn't hurt the plants. Most plants are short as they grow slowly and require less energy. They don't make too much food thus they do not lose too much water.

  1. Biology Industrial Melanism of Peppered Moth Lab

    1 13 17 2 13 17 3 13 17 4 11 19 5 12 18 Table 11. Number of Melanic Moths and Light-Coloured Moths left on Dark- Coloured "Tree Bark" Trial Number Number of Melanic Moths Number of Light-Coloured Moths 1 21 9 2 23 7 3 25 5 4 27 3 5 27 3 Table 12.

  2. A report on an Ecosystem

    1x Trowel * 1x plastic bag * 1x Calculator Abiotic factor Measurement Air Temperature at ground level 27�C Air Temperature 1m above ground 29�C Soil Temperature 25�C Soil pH 7.3 Geographical Features The plot of land is in a semi-arid environment, with an ecosystem consisting of mostly low-level herbs with

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