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Independent Study Projects Finding Answers to Questions And Making a Difference in Sweat Mountain Park We began with observations and inferences in the park. Our observations led us to questions: Why are there so many mushrooms in the park? How old is the park? What is the origin of the terraces in the park? Where did the large rocks come from? Why is the stream bank so steep in some places? What caused some of the trees to fall over? Some questions suggest experimentation and data collection as a part of the research to find the answer. These questions are better for your project. Can you tell the difference? Can some of the other questions be re-worded to better meet the criteria for this project? Is there a relationship between the amount of intensity of light and the type of vegetation? After observing salamanders in the stream: How are they classified? What species of salamanders live in the stream? Is their life cycle seasonal? Are they entirely aquatic or do they eventually come out of the water to live on the land? What is their niche in the food web? How does the size of salamanders vary in the creek? Do more salamanders live in riffles, runs, or pools? Is this a healthy population of salamanders? How do they compare with salamanders found in other local creeks? After observing crayfish in the stream: How are they classified? … What species of the crayfish live in the stream? What is their niche in the food web? What is their life cycle? What is their life span? How does their number and size compare with different parts of the creek? …with other populations in various streams in the watershed? Mushrooms and other fungi in the park: What varieties of fungi can be found in Sweat Mountain Park in the fall, winter…? Where are they found? Is it random or specific to a spot in the park? Does the emergence of mushrooms follow a rain event? Does applying water to a specific area affect the number and variety of mushrooms or other organisms that are found there? Other questions: Does light intensity and temperature vary at different places in the park? Do the organisms found at specific different places in the park vary through the year? (population study) Does the flow rate of the creek change or remain the same? What factors affect the flow rate? What kind of data could you collect? How could you determine this? What is the origin of the water from the pipe that begins our stream? I’ve noticed an area that looks to be a gully formed during heavy rain events that flows from the parking lot to the creek…why? What volume of water is directed from the bus parking area to the stream if we have one half inch of rain…or one inch of rain? Is this a problem? How long has the park been there? Have the stream banks always been that steep? What factors contribute to the shape of a stream? Is the stream stable or is it continuing to erode the banks? How could you find this information? What experiment could you conduct to find out? What are the rules that protect surface waters? How healthy is the water in other parts of the watershed? Are there any permitted discharges in the water in our Rubes Creek watershed? Are there any issues relating to use of the water? Where does our drinking water come from? Does the water temperature change through the day? What about the levels of dissolved oxygen and pH, do they also change? What is the food web for our creek? …for other areas in the park? What are the producers, consumers, and decomposers? What mammals live in the park? How could you find out? What indirect evidence could you collect to determine this? What species of trees live in the park? Is there some relationship between the circumference and location in the park? What about along a transect (a line across the park)? Why is this information interesting or useful? Is this a natural stand of trees or planted? How old are the trees in the park? Is this variety of trees unique in some way? Are the trees that are being removed for development the same varieties? Is this typical of the piedmont region of Georgia? How long does it take to restore a woodland area such as this? What is the value of this area? From Explore the World Using Protozoa: Collect protozoa from the creek using a variety of methods. Compare those found at different places in the stream, rock scrapings, bottom sediments, submerged vegetation, surface water, etc. See Appendix Compare protists found in different locations in the stream. Compare stream water with pond water (from another location). This collection should be done before a freeze. Investigation 1.2 Determining Abundance and Diversity- compare in different environments (soil, leaf litter, etc.) See pages 28-29 for Morphology and Natural Habitats How are protozoa physically adapted to their natural habitats? Does protozoan morphology relate to habitat structure? Chapter 4 Comparative ecology: Investigation 4.1 Species Colonization or 4.2Ecological Succession Soil Types in the park What type of soils are there in the park? Does soil type vary by location? How does the soil type affect the types of plants or other organisms found there? There are several good experiments and background information that might help you plan your investigation in Biology is Outdoors!: See investigation 4: Soil Analysis pages 22-30 Soil Organisms are also interesting study subjects. How do the soil organisms at different depth compare? What about comparing the soil organisms in different parts of the park (on the path, near a rotting log, beside the path, in a grassy area)? Investigation 5: Soil Organisms pages 31-50 Instructions are included for how to collect soil nematodes with a Baermann Funnel, how to collect soil arthropods with a Berlese Funnel, and how to collect surface arthroods with a Pitfall Trap. This section also includes several spin-off investigations and concludes with the formula and for how to calculate the diversity index (a method that ecologists use to compare the numbers of individuals of different species found in different locations). Microenvironments: Investigation 7 pages 65-79 Have you considered investigating a specific microenvironment in the park? These are small areas with specific living conditions that are usually temporary. The book lists pavement cracks, puddles, or a shrub. What about a rotting log or under a large rock? Can you think of others? Investigation 10: Natural Areas pages 102-130 See this section for definitions of the various terrestrial and aquatic ecosystems. There is an investigation for streams here. See the spinoff idea on page 130 if you are interested in how people affect an area. What are some of the kinds of effects that people have on the environment? The Amateur Biologists Chapter 7 Museum Secrets for Preserving Plants (beginning on page 49) may be of interest to some of you interested in the changing leaves of fall. What causes this change in colors? How can you best preserve some of the specimens for identification and further study? Are you interested in animal behavior? Chapter 22 Learning in Sow Bugs (beginning on page 170) sounds interesting. Porcellio laevia (sow bugs) may be just the organisms for you. Read about them. You will need to collect a population to maintain and study. Exploring Ecology Activity 15, page 82 has some suggestions for studying populations within the community of living things in a region, like the park. Surveying Small Communities (Activity 18) and Using the Line Transect (Activity 21- pages 114-119) may also be useful for planning a study. You could establish a transect and collect data about the populations in the community and revisit the same transect to determine if and how the community changes. Activity 22 Soil (organisms -page 120-) Activity 23 Naming Soils – p.125— Activity Classifying Soil Samples – p. 129— Activity 25 Determining Soil Porosity – p. 133— Activity 26 Temperature Influences on a Community- p. 139— (Food Web and Energy Flow activities are also included in Part 4)