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Fairy Mushroom Rings

By: Randi Howell and Virginia D'Alessandro Fall 2010 Model and Simulation Final

Randi Howell

on 15 December 2010

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Transcript of Fairy Mushroom Rings

Fairy Mushroom
Rings By: Randi Howell & Virginia D'Alessandro Mycelium: a mass of hyphae hungry cells that grow underground. They feed on nutrients, pushing and growing through the the surface of the earth. Fungi: multicellular, spore producing organisms that absorbe their nuitrients from their surroundings.

The fungi kingdom is broken down into four phylums: the chytrids, zygote fungi, ascomycota, and basidium. Spores: the reproductive cells that are capable of germinating into new fungi. Mushroom: the fleshy, spore-bearing fruiting body of a fungus, typically produced above ground on soil or on its food source Hypha (plural is hyphae): small threads that are part of a fungus. These thin strands stretch out to gather food and nutrients to allow the fungus to grow. Gills: the thin flaps that resemble fish-gills under the cap of a mushroom. They are there to produce the spore (seeds, if you will) for the mushroom. Cap: the top of the mushroom which is often colorful. Mushroom Reproduction Fungi reproduce in many different ways. They can reproduce sexually and asexually.

Sexual Reproduction: the male and female cells fuse, to produce spores inside a "fruiting body" such as a mushroom.

Asexual Reproduction: when a new fungus grows straight out of the parent fungus. Mushroom Basics Mushroom Growth Apical growth: extending or elongating at the tip of the hyphea without increasing the overall diameter. A new hyphea grows out from the spore and yeilds a circular growth pattern. Growth can be rapid because of the constsnt absorbtion of nutrients. A fairy ring is found frequently in a grassy area. There are three types: those that do not affect the surrounding vegetation, those that cause increased growth, and those that damage the surrounding environment. The ring is started from a mycelium. The fungus growth is on the outer edge of the grassy area because the inner band of decaying mycelium use-up the resources in the soil at the center. This creates a ring effect. Each succeeding generation is farther out from the center. MatLab Code Formation of Fairy Rings Animation for Project 1b Animation for Project 1c Question 1:
Complete the simulation of this module. Various exercises can help in writing the
functions. Run the simulation employing various initial grids (ground), as follows:

a. As described in the module with various values of probSpore. Describe the
b. With exactly one spore in the middle
c. With exactly two spores
d. With exactly one spore and a barrier Question 6:
Do Project 1 so that every extended boundary cell has the value of its immediate
neighbor in the original grid.
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