Aquatic plant

of Photosynthesis By: Maxwell Wissman, Lela Cohen, Sophia Stevenson and Russell Leibovitz ABSTRACT: This experiment was done to answer and/or to find out if you change the light intensity on a healthy plant, then it will photosynthesize differently, because the photons will hit the leaves of the plant more or less, thus increasing or decreasing the photosynthetic rate. This would answer the question by seeing how many bubbles come up without any light and how many bubbles does with light at…

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…

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…

guiding principles for management. The development of flow assessment methodologies is used for prescribing environmental flow requirements. Environmental flow regimes in streams and rivers are the primary determinant of the structure and function of aquatic and riparian ecosystems (Poff et al., 1997; Hart and Finelli, 1999; Bunn and Arthington, 2002). Environmental flows are defined as the ‘quantity, timing and quality of water flows required to sustain freshwater and estuarine ecosystems and…

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’s 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.…

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…

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…

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,…

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 &…

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…