Final Lab Report E1

Final Lab Report E1 - Introduction In this unit of ecology...

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Introduction: In this unit of ecology, the ecosystem of a natural habitat and a controlled habitat were observed. The natural habitat observed was a local marsh and the controlled habitat was an aquarium arrangement. Ecological diversity, complexity, and interactions were observed in these environments. Ecological diversity was the largest observation made. Through a diversity index/key, various types of creatures were indentified. Also, the differences in environmental features were tested. The habitats were tested for temperature, pH, dissolved O2, NH3, NO2, and NO3. This data allowed for observation and data analysis. Another instrument was used, the Ecobeaker, to identify life-long environmental changes. This was a computer simulation that created a natural habitat and allowed experiments to be performed over long periods of time. This allowed the group to observe results of different animals being introduced to an environment. The goal of the Ecology unit was to understand the diversity in different ecosystems, to discover the elements in each environment, and be able to process data. Methods and Materials: Throughout the Ecology portion of the Biology laboratories many different methods and materials were used to observe and measure the natural and artificial ecosystems that were used during the labs. The method used that gave us the largest amount of information was the senses. Whatever the type of ecosystem or organisms that was observed, senses played the largest role in gathering the information required to complete the labs successfully. Because the senses usually don’t give the information needed in enough depth, many materials and tools were used to increase the amount of information derived from observations. Microscopes are one of the essential materials used during labs. Both dissecting and compound
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microscopes were used throughout the labs. The dissecting microscopes were used to view larger organisms like insects and plant material, while the compound microscopes were used to view microscopic organisms like the cercariae. In attachment to the compound microscopes, Nikon E200 Coolpix Cameras were used to record pictures of some of the microscopic organisms that were viewed using the compound microscope and the computer was used to store the images for future reference. In retrieving data from the artificial and natural ecosystems many different types of equipment were used (Cooper). To measure temperature two different tools were used. The Vernier probes were used to measure the temperature when they were available and when they weren’t a common thermometer was used instead. The Vernier probes were also used to measure the amount of dissolved oxygen in the aquatic environments. The Vernier probes were attached to T-I 83 Graphing calculators that showed the amount of dissolved oxygen. To measure the amount of pH that was in the ecosystems, test strips were used. The test strips also measured the amount of Nitrogen that was present in the environments. When collecting samples from the marsh, D-nets
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Final Lab Report E1 - Introduction In this unit of ecology...

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