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AN INVESTIGATION OF THE DIFFERENT SPECIES OF MAYFLY WITHIN THE POOL & RIFFLE
Member rating: No Rating | Words: | Submitted: Mon Dec 11 2006
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AN INVESTIGATION OF THE DIFFERENT SPECIES OF MAYFLY WITHIN THE POOL & RIFFLE AIM: I am going to investigate the different species of Mayfly within the pool and riffle. I am going to create tables to show results from my investigation. I am also going to draw graphs to show the distribution of Mayfly Nymphs within the pools & riffles. NULL HYPOTHESIS: There is no significant difference in numbers of Mayfly Nymphs found within the riffles and pools. ALTERNATE HYPOTHESIS: There is a significant difference in numbers of Mayfly Nymphs found in the riffles and pools. STREAM: Data was collected from Nant Iago (James Stream) which is situated in St Mary's Vale. It is surrounded by Beech woodland. The source of the stream is the Sugar Loaf Mountain. It also contains peaty soils that are slightly acidic. Many erosive streams receive most of their energy from organic matter washed into the stream, largely as leaf litter. The litter is...
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