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.
Plants are the producers for an ecosystem. They photosynthesise carbon dioxide and water and produce energy in the form of carbohydrates and other molecules. Photosynthesis requires water, and plants gain water from the soil using mineral ions such as nitrate produced by the nitrifying bacteria. Hydrolysis of ATP releases energy for processes such as active transport of the nitrate ions (and others such as potassium etc) from the soil into root hair cells, a process that lowers water potential and is used to draw water into the plant from the soil. In leaves, photosynthesis involves the photolysis of water, a process that involves the attachment of two electrons to a magnesium ion in chlorophyll and the production of hydrogen ions from the breakdown of water.
Oxygen is measured in 2's and with less fish there is more oxygen. 2. Do background research – Utilizing at least one scholarly source, describe how variations in dissolved oxygen content in a body of water can affect fish populations. Answer = According to a study conducted in a Florida spring by authors Mckinsey & Chapman, "It is likely that the pattern of variation in dissolved oxygen interacts with the respiratory abilities of the fishes to affect the distribution pattern and community composition along the gradient". (Mckinsey, D. & Chapman, L., 1998, pg.
The deep volcanic ash where he found the lupine held few nutrients. But lupines, like other plants in the pea family, are able to “fix” nitrogen, thus enriching the soil. Each lupine plant created a microhabitat that was hospitable to several other plant species. Besides enriching the soil with nitrogen, the lupines also physically trapped windblown debris and attracted insects. As the insects died on or around the plant, they enriched the soil with organic matter.
Lab 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 = It appears that the more dissolved oxygen in the water, the more the number of fish are observed in that same area of water. 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.
Today, scientists, and resource managers are concerned about the future of the lagoon, including declines in quality of the water, loss of habitat, biological diversity, invasive species, diminishing fisheries, and the declining of the ecosystem’s health. These issues can be solved with extensive scientific research and continuous monitoring. A better understanding of complex ecosystem processes in the lagoon will help to ensure its
Why Do Microbiologists Study Termites? In nature, intimate relationships between organisms commonly occur, one of which is a mutually advantageous relationship for both the host and the hosted. This mutualistic symbiosis is best characterized in the role protozoans and fungi play in the digestion of cellulose in a termite’s (family termitidae) gut. Without this help, termites would not be able to break down the lignin-rich woody materials needed for growth and nutrition but with this help the symbionts i.e. protists and fungi, have their food delivered to them, thus conserving energy by not having to go far to feed.
Pine can only be infected by basidiospores produced on Ribes plants. These spores are somewhat delicate and short-lived, so spores typically are not dispersed from Ribes to pine more than about 300 meters. However, the Ribes species proved too elusive, difficult to kill and resilient. Also, Pruning is an effective way to fight against white pine blister rust. Branch infections are not too serious; stem infections are — they are often lethal.
These are: • The Bottom Layer • The Middle Layer • The Top Layer The Bottom Layer - This consists of ferns, small plants and saprophytes. The Middle Layer - This layer has trees, ferns and eprophytes. The Top Layer- This layer contains tall trees that have buttress roots. • The leaves of the tall trees will form a continuous canopy which will shut out most of the light at the ground level resulting in little undergrowth. • The majority of the trees in the rainforest are broad leaf and green which helps in getting rid of excess water through transpiration and leafs will protect themselves through a drip tip.