Landscape of Fear In “Scared to Death” by Ed Yong, he discusses how the addition of one predator can cause a cascade effect on the remaining prey in the ecosystem. The grey wolf was originally eradicated in the Yellowstone Park in order to increase quality of life for the elk. The elk was the natural prey of the wolf, and faced dwindling populations due to its presence. Following the elimination of the removal of the wolves, the elk population flourished, reaching numbers as high as 19,000. This eventually turned out to not be 100% good news for the park, as the elk greatly diminished the park’s trees.…
In recent years, we have seen the ecosystem flourish due to a successful reintroduction of wolves into Yellowstone National Park. We have seen a steady decrease in elk population, which in turn helped create a successful trophic cascade. Looking at graphs we can see that the wolf reintroduction has done its job, and we see a more than 50% decrease in population of elk. But what could happen if the wolf population doubled. We could see a total extermination of elk from Yellowstone and a decrease in visitors to Yellowstone, but in turn we could see in increase in the population of wolves, water animals, birds, and bears.…
Every species has a great ability to produce offspring and its population expands until it runs out of food or it is limited by competition, its own waste products, or some other factor. Changes in climate or introduction of a new species from elsewhere can greatly affect the balance of nature.…
An ecosystem is a complex set of relationships among the living resources, habitats, and residents of an area. Which includes plants, trees, animals, fish, birds, microorganisms, water, soil, and people ( ). The Patuxent Wildlife Research Center, in laurel, Md encompasses a type of ecosystem, which makes it a unique environment t visit. The Patuxent Wildlife ecosystem contains many plants, wildlife, and lakes. In this essay I will discuss the structural and functional dynamics of the Patuxents Wildlife Research Center ecosystem of Lake Allen at North…
ecosystems and how they control and predict all living organisms on planet earth. One such…
An ecosystem is a biological community of interacting organisms and their physical environment. Ecosystems can be changed by both human activity and natural succession. Ecological succession is the observed process of change in the species structure of an ecological community over time. The time scale can be decades (for example, after a wildfire), or even millions of years after a mass extinction. This essay aims to identify ways in which vegetation has transformed over time, and to evaluate the importance of both human and physical factors.…
An example of this is when the wolves were taken out of Yellowstone Park, when this happened the park became deprived of plants. When they were put in the plants became grown and diverse. This happened because the wolves changed the behaviors of its prey and this make it so that the plants were able to grow back. This was all created by keystone species. Overall keystone species have the biggest impact on the high…
There are two ways that humans disrupt the proper functioning of ecosystems. One is by altering the structure of natural landscapes. Tearing down trees, which can be homes to different wildlife species, can do this. Another way humans disrupt the functioning of ecosystems is by altering soil composition.…
Three effects of over hunting wolves are the following. Elk populations grew because the predatory pressure was taken off of them. Also because the elk did not have any pressure on they began not to move around slot leading to weaker willow stands. Finally, because of this overpopulation, populations of birds have been decreasing because of these overpopulations birds do not have shelter or food.…
Keystone species are extremely important in ecosystems across the world. They help control things like population, abiotic and biotic life, and impacts on human life. Keystone species essentially control the functions of the environment they live in, and provide positive and negative effects. In class, we studied the effect that wolves had on the environment of Yellowstone National Park. Now, I introduce Grizzly Bears and Beavers as my two examples of a Keystone Species. Beavers completely change their respective ecosystems because they build dams, which then creates wetlands, in order to catch prey and build shelters. Grizzly Bears help to regulate populations of prey and provide surrounding areas with valuable nutrients. Both of these species impact their respective ecosystems in similar and different ways.…
The areas that are being put to use as wolf habitat are still inhabitant by cattle. The removal of the Mexican wolf from the Southwest, led to the rise of antelope, herds of elk, and deer. The inhabitants of the rural Southwest see the reintroduction of wolfs as an attempt to control the use of land in poor states. The importance of wolf recovery is necessary because it will conserve the wolf itself, maintain important ecological processes, and provide spiritual, recreational, economic and esthetic benefits to people. The conservation of wolves is supported by ecology, evolution, economics, education and ethics. Wolves have been an important evolutionary forces for thousands of years shaping and maintaining the landscape of North America and…
Sustainability means being able to keep up with the replacement of resources in balance with the demand. It is important to the ecosystem's sustainability that its resources are not depleted too quickly. Predator-prey relationships illustrate this concept. Prey species such as deer will continue to forage as long as food is available. Left unchecked, populations increase to the point where some members starve. Predators will take the weakest members of the herd as an efficient means to get food with the least amount of effort. The prey population recovers and is stronger as the ecosystem's sustainability returns.…
An ecosystem is a very important part of our natural world. Everything relates to nature in one way or another. In turn, should be treated with respect and should be not tampered from its original state. With animal annihilation and extinction aside one large issue that comes to mind dealing with ecosystem imbalance is invasive species. Most invasive species do not add or diminish from there new invasive ecosystem but sometimes they can cause a devastating effect on things such as population imbalance, predator versus prey imbalance and outright off balancing the entire ecosystem food web. The purpose of this paper is to discuss what an invasive species can do to an ecosystem and possible solutions to correcting the imbalance in the…
species or its' habitat. It is the latter part of the bill that causes the…
Ecology helps us understand the importance of mass extinction in evolution, and it also helps us understand some of the causes of extinction. Ecological niche is one of the most important concepts to understand. An animal or plant lives in a certain place is active at a particular times, and eats certain things; all these factors describe its ecological niche.…