11:375:101 Lecture Notes - Lecture 2: Carbohydrate, Cell Nucleus, Covalent Bond
5 Dec 2017
School
Department
Course
Professor
Document Summary
Problem: wanted to know if deforestation increased the loss of water and soil nutrients from soils. Testable hypothesis: when a forest is cleared of its vegetation and exposed to rain and melting snow, it retains less water and loses more soil nutrients. Experiment at hubbard brook experimental forest in new hampshire. Water volume in the creeks draining the forest. Nutrient concentration in creeks draining the forest. The weather is the same in the two sites. Experiments are performed during the same time. There are multiple control sites to experiment with. In a perfect world, the control site is exactly the same as the experimental site, with only one variable changed. Analyzed data: compared the loss of water and nutrients from an uncut forest (control site) with one that had been stripped (experimental site) Plants and everything need nitrogen from the soil, not air.
