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    Spatial variability in local plankton communities can have large effects on the composition and diversity of the secondary production with in an area. Therefore, it is important for scientists to study the factors that affect plankton community‚Äôs abundance, diversity and dominance. In this study multiple physical and biological factors were observed in order to examine how surface plankton communities varied with distance from shore in the nearshore environment of the Southern California Bight.…

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    Invertebrate Diversity

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    This study examined the effects of physical factors on diversity in freshwater environments by observing invertebrate diversity in riffles and pools in a freshwater stream. It was hypothesized that differences in invertebrate diversity between riffles and pools would be due to physical factors in the environment. To test this hypothesis, invertebrates were collected from each environment and classified by their taxa, and Shannon-Simpson indices were produced from these data to analyze the…

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    Shark culling is a state government implemented policy in which sharks within the vicinity of a beach can be legally killed through shark nets or drumlines or a combination of the two. Drumlines are unmanned buoyant drums anchored one kilometre of a beach's shoreline. In between the drums are ropes with hooks. Drumlines are baited so that if a shark is swimming in the vicinity of a beach it would be attracted to the bait and not humans. Each state has different policies on drumlines depending on…

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    phosphorous is an essential nutrient to plant and animal life and is in short supply in most fresh waters, a small increase could result in detrimental effects to the habitat such as accelerated plant growth, low dissolved oxygen, and death to certain fish (Detter, 2). Knowing the concentration of phosphate is a water quality issue because most digestive problems are results of high levels of phosphate as well as eutrophication, or the overgrowth of plants (Detter, 2). Knowing the concentration…

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    Steelhead Trout Case Study

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    There are many factors that contribute to the conclusion that the steelhead trout will and will not be able to reestablish themselves in the Arroyo Del Valle presently. Some of the most important factors for the re-establishment of the trout are the relatively stable pH, adequate DO levels, and low pollution. From our graphs, it is evident that the pH of the creek is consistent around 7, which is a pH that the steelhead can establish themselves and live in. Steelhead trout require a DO level…

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    Aerobic Enzyme Lab

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    the key elements necessary for the growth of plants and animals (1). That is why having the right levels of phosphorous in the water is so essential. If too much phosphate is present in the water the algae and weeds will grow rapidly, may choke the waterway, and use up large amounts of precious oxygen (in the absence of photosynthesis and as the algae and plants die and are consumed by aerobic bacteria.) The result may be the death of many fish and aquatic organisms. Experimental Methods First,…

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    -Short-Grass Prairie a. Overcrowding of species is a limiting factor because if there is an abundance of coyotes, it will lead to overhunting of smaller organisms b. Spreading of disease is a limiting factor because there is a dense population, so the diseases will spread faster c. Natural disasters is a limiting factor because there is an abundance of prairie fires that can reach the large population d. Human interaction is a limiting factor because things like dams affect the population of…

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    Indiana Wetlands Essay

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    of the year, but does not need to completely saturated year round. A wetland can be seasonally flooded (Tiner). The wetlands in Indiana perform a vital role in water purification and some general flood protection. A part for these roles a diverse plant group is adapted and more prevalent among wetlands. Wetlands are a complicated part of the ecosystem and come in a multitude of different forms. Swamps for example are dominated by woody species, and have two more specific classifications, shrub…

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    Hypothesis 2: Calcium levels in the soil affect species richness. Prediction: An increase in the calcium levels in the soil will decrease the species richness. Reasoning: As the calcium levels increase, some plants begin to take advantage of increased calcium levels and outcompete other plants, driving them to extinction. Thereby, decreasing species richness. Analytical approach: Regression Independent variable: Calcium levels Dependent variable: Species Richness By signing, I acknowledge that I…

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    ecological components that included behaviour, condition, habitat use, energy intake and inter/intra specific interactions, etc. Accurate description of fish diets and feeding habits also provides the basis for understanding trophic interactions in aquatic food webs. Conceptually, trophic relations of fishes begin with foods and feeding behaviour of individuals or species. Diet composition analysis can be used to evaluate effects of ontogeny, or the establishment of exotic species (Gelwick &…

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