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How does the distance from the ground affects the abundance of different species of moss on a rocky surface wall?

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How does the distance from the ground affects the abundance of different species of moss on a rocky surface wall? Problem/issue: Mosses are very small green plants that grow together forming dense carpets in clusters on fallen logs, at the base of trees or in damp, shady places. Their structure consists of a thick stem, densely covered with tiny leaves. Moss plants do not possess true roots. Instead, mosses derive their nutrients and moisture from the air. Moss affects the communities in which they live since they provide food and shelter to small insects and animals. Moss also protects soil and keeps slopes from erosion during rainstorms or severe weather. ...read more.


Hypothesis: The closer to the ground in a rocky surface wall, the more abundance of species of moss are developed. Variables: a) Independent variable: * The distance from the ground in a rocky surface wall b) Dependent variable: * The abundance of the different types of moss c) Fixed variables: * Land (the area will be the same rocky wall at different points) * Temperature * Water precipitations * Sunlight * Wind * Quadrats sizes * Time * Latitude * Length of the transect * Space size between quadrats Materials: * A rocky surface wall approximately 2 meters high and 50 cm wide * Measuring tape * A digital camera for photographic records * 5 meters or rope * 4 nails * A hammer * Anemometer for measuring wind speed Method: 1. ...read more.


Calculations of results: a) The measurements used for the percentage cover will be the following: Percentage cover (%) ACFOR Scale Score >50 Abundant 5 25-50 Common 4 12-25 Frequent 3 6-12 Occasional 2 <6, or single individual Rare 1 Absent 0 Table #1 Percentage cover scales b) After measuring the percentage cover of each quadrat, the data will be arranged on the following table. A table will be created per quadrat where N is the letter of the quadrat. Moss specie Percentage cover (%) ACFOR Scale Score Table #2 Quadrat N c) After obtaining the percentage cover or each quadrat, a T-test will be produced in order to determine if there's a big difference or not. Then, conclusions may be drawn from the collection of data. ...read more.

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