IDU paper - Context for Statisticsdocx.docx - Touhid Rifat Science Math Grade 10B Niranjan Bose IDU Ecology(Lab report Research Question How does the

# IDU paper - Context for Statisticsdocx.docx - Touhid Rifat...

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Touhid Rifat Science & Math Grade 10B Niranjan Bose IDU Ecology (Lab report) Research Question: How does the height of the canopy cover effect the quantity of plants in a random quadrat within different zones of a rainforest? Aim: I will be producing a lab report summarizing and evaluating my investigation on the relationship between the height of the trees in the primary and the secondary rainforest and the amount of plants that constitutes in the surrounding area of the trees. Introduction: 13% of the earth’s land is covered in Rainforest. There places in the world, such as in Africa, Amazon and even Tioman where rainforests are a hot topic for discussion, especially because of their large population for immensely tall trees are eminent. Density varies over different zones of the rainforest and so the amount of light that reaches the forest floor, the quantity of seedlings and saplings, the plants heights, etc. There are about 2 different zones, where different rainforests are categorized at, one being the primary and the other, secondary rainforest. Secondary rainforests are more humanly disturbed when compared to the primary forests, thus allowing other consequences to arise within the ecosystem that comprises in a rainforest. Hypothesis: There are about 4 layers in a tropical rainforest forest floor, understorey, canopy and the emergent layer. All these layers work somewhat in blocking the sunlight from reaching the forest floor from where organise live, grow and die. Consequently, with the density of this layers or the height of the trees, more & more light gets blocked and therefore effect either the growth or the quantity of species that lives within an area, where the luminosity of sunlight is lower. This lab will mainly be focusing on the correlation between the the tree height in the primary rainforest and the amount of seedlings and saplings within its surroundings. Therefore, with the increase in tree height, we’ll be expecting a lower quantity in plants and vice versa The reason why this happens is with an increased height, there will be a higher density of layers for the tropical trees and therefore fewer sunlight would make its way through the forest floor, allowing less or no photosynthesis to happen within the organic structure of the plants. In addition to that, I will also be looking into the variance in the heights that I’ve collected for both the primary and the secondary forests. Based on the hypothesis mentioned in the previous statement, I still expect that the variance in the height collected for the primary rainforest would be higher relative to the secondary ones, since the height for tropical trees in the primary zone is higher.
Variable chart: Types of Variable -- Variables -- Independent Variable Trees height (m) Dependent Variable Quantity of plants Controlled Variable Temperature ( ), Humidity (water vapour/m 3 ), location - rainforest Qualitative Data: Time range - 9: 30 am (humid, light rain) to - 10:50 am (humid, sunny) Materials & its usage: - 3 x 3 m String Quadrat (to mark out the quadrat of the randomly chosen coordinate. All

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