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Fairy Mushroom Rings

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

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
results.
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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