The Rideau River Ecosystem and Food Web Team A BIO/101 Brian Fox The Rideau River Ecosystems are biological populations of interacting organisms and their physical surroundings. Many are areas of lands that have changed due to the nearby water currents. These areas of land are home to many animals and plants that have adapted to survive. Each individual ecosystem is comprised of different features that make it conducive to certain plants and animals. That means each ecosystem is unique.
QUESTIONS 1. Make an observation – Based on the data in Table 4, discuss what patterns you observe in regards to dissolved oxygen content and fish populations in the body of water? Answer = By my observation the pattern goes by minus 1 twice, then minus 2 twice, then plus 3 twice, then minus 4 twice, then minus 5, so the pattern is 1,2,3,4,5, and so on. 2. Do background research – Utilizing at least one scholarly source, describe how the dissolved oxygen content in a body of water can effect fish populations.
Biology Excursion Question Using data collected on field trip and two named animals, explain the relationship between the distribution and abundance of these two organisms and the abiotic features of the rock platform. There is a close relationship between the abundance and the distribution of organisms living amongst the long reef platform. Abiotic features such as temperature range, salinity, Ph. levels, turbidity, water availability effect the distribution and abundance of aquatic sea creatures living in the area. Some of the organisms such as Tesseropora Roseas (Barnacles) and Knobbly Winks have different adaptations, which allow them to survive in these harsh conditions.
Lab 1 - Exercise 1: Data Interpretation Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many living organism requires oxygen to survive, it is a necessary component of water systems such as streams, lakes and rivers in order to support aquatic life. The dissolved oxygen is measured in units of parts per million (ppm). Examine the data in Table 4 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from; finally, answer the questions below. Questions 1.
Knick points reflect different conditions and processes on the river often caused by previous erosion. River terraces are where vertical erosion occurs in a floodplain that was previously being formed by the normal conditions of deposition and lateral erosion. The river cuts downwards and abandons the old flood plain as a river terrace. Over time once the profile is regraded, the river may
Land use and other human activities also influence the peak discharge of floods by modifying how rainfall and snowmelt are stored on and run off the land surface into streams. With less storage capacity for water in urban basins and more rapid runoff, urban streams rise more quickly during
Final Essay Exam GEOL 108 1. Describe the paths of water through the hydrologic cycle. Explain the processes and the energy gains and losses involved in the changes of water between its 3 states. Operationally, we often most concerned with water does when it reaches the solid earth, both on the surface and in the sub-surface. Explain the relationship between the saturated zone, the water table, a ground water well and the cone of depression, all within the sub-surface.
Cycles in biology A cycle is a series of events repeated in the same order. Cycles are a major aspect of biology which occurs in a ecosystem, plants and animals. One cycle which is part of the ecosystem is the water cycle. The sun heats water in oceans and seas and water evaporates as water vapour into the air. Transpiration removes water from plants and soil.
The cross section helped to better understand the thickness, flow direction and distribution of the aquifer(s) within the mapping area. 3 river stream gages are placed in the stream in order to better understand the relationship between groundwater and surface water by giving quantities of discharge/recharge in cubic feet per second (cfs). Understanding the relationship between the groundwater and surface water gives aid for producing the potentiometric surface map which includes the gaining (effluent) and losing (influent) parts of the stream. Results Two aquifers were located, a confined and unconfined aquifer. The unconfined aquifer, or the upper aquifer, (see cross and contour map) consists of a predominately sand rich and partial gravel unit and is approximately 50 feet thick.
The Hjulström Curve is a graph devised by Filip Hjulström in 1935 that shows the velocity, and energy, of water needed to erode, transport or deposit varying sizes of sediment. For example, a small piece of sand takes a water velocity of only 20cm/s to erode, but a boulder takes a water velocity of around 600cm/s. This information can then be used by river engineers to design dams, bridges or flood defences. Boat builders can calculate how strong their boats needs to be in order to be safe in a powerful river. The Hjulström Curve has logarithmic scale, which is because changes in the erosion, transportation and deposition of a particle changes quickly at a small scale, but at a large scale it changes very gradually.