Algae Lab Essay

695 Words Oct 1st, 2012 3 Pages
Jeanine Campa
Biology 101
10/20/2010
Ecology-Interspecific Interactions Lab
Intro:
Ecology is the study of how organisms interact within their environment. Every species interacts with its surroundings, whether it’s within their populations, community, ecosystem, etc. In this lab, we will be comparing two different species and how they grow alone as well as together, in the same environment. More specifically, in this lab, we will be dealing with one of the most important ideas in ecology, the niche. Due to this concept, we can study the environmental circumstances the organism can handle, the essential resources it will need to survive, and how it will obtain these resources. “Different species can hold similar niches, and the same
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The carrying capacity determines the population level of a species according to the limiting resources,
Algae is one of the most diverse and interesting organisms on the planet. This is because there are over 10,000 unrelated species of organisms that contain chlorophyll and live in large bodies of water or moist land. Keeping a count of population size gives us a good indication of how certain species grow and interact with one another. By using two different species of Algae we can determine what types of interactions the two can encounter. The two species tested were Closterium and Micrasterias algae. We labeled them as species 1 and 2. The purpose of this lab is to determine whether the selected algae species will demonstrate competition or resource partitioning with the coexistence of each other versus alone. At the end of this lab we should be able to determine which species upheld the best under all of these circumstances.
Methods:
This lab was performed with two different types of algae, Micrasterias and Closterium. Within our groups, we counted how many of each species there were to begin with. Each group sampled one micro liter of each algae stock, five times, and then found the average of the five trials and converted it to milliliters. There were three different test tubes of algae stock containing 100 individuals. The first contained 100 Closterium,
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