Population ecology

As a result from the action of over hunting wolves, more specifically depleting the population in the area, the population of deer increased due to the disappearance of their predator. However, due to the increase of deer population, Leopold noticed the depletion of the mountains resources, such as shrub and other tree foliage. Although the wolves are gone, more known as “a hunter’s paradise”, the deer population increases and consumes a majority of the mountains resources, and eventually the…

He argues that the extraction of resources and pollution results from the disturbance of the assimilative capacity of the earth caused by the “uneven growth” whereby population and industries are concentrated in towns. Similarly, the concentration of resource extraction and monoculture (agriculture)in the rural or underdeveloped regions disturbs the assimilative capacity in these regions and depletes the soil reserves…

South America, Chile, and Argentina. Most of the Valdivian Coastal Reserve rainforest is located in Chile. The forest has many bamboos and ferns, and evergreen trees. According to Veblem Delmastro, who is an expert in biogeography, forest ecology, landscape ecology and the ecological aspects of global environmental change says that Chile has faced many disturbances to their forests due to…

The reasons for the Barn owls decline are not fully understood, but can most likely be attributed to the loss of suitable habitat due to various aspects of agricultural intensification and the increased use of harmful second generation anti-coagulant rodenticides. Other factors that have been implicated in their decline are the loss of suitable nest sites, an expansion of major road networks and the increased severity of winters. The Barn Owl is also in decline while the Corncrake is no longer…

T., Valentini, A., Miquel, C., Taberlet, P., Bellemain, E., & Miaud, C. (2012). Improved detection of an alien invasive species through environmental DNA barcoding: The example of the American bullfrog Lithobates catesbeianus. Journal of Applied Ecology, 49, 953­959. doi:10.1111/j.1365­2664.2012.02171.x In this research work authors suggests that It is more easy to destroy the Alien Invasive Species(AIS) at their very initial stage. They supported that now it is possible to detect low amount of…

fragmentation has become an increasing issue. Island biogeography has helped with understanding what fragmentation can do and has helped with developments in several areas such as landscape ecology in North America (Wu and Vankat 1995). However, Kent (2007) explains the relationship between landscape ecology and biogeography is uncertain. Purse et al. (2015) use landscape and climate to help determine why an alien species Harmonia axyridis was more prone to spread to some areas but not others.…

Lionfish are venomous Marine fish found in the Pacific and the Indian Ocean. The fish have started invading the Atlantic waters. The Lionfish pose a great danger to the native ecology, and they might destabilize the ecology. They have a large appetite and are well adapted to evade their prey. The lionfish belong to kingdom Animalia and the Phylum Chordata. The fish lives in deep waters in the Coral feeding on the reef fish. The fish develop at a very fast rate such that a fingerling attains…

In particular, I can relate to where Bell and Ashwood write about the Western value of individualism. It was interesting to read about the section on “individualism, the body, and ecology” in relation to this period in my life (pg. 206). I definitely felt closed off from my body at this time and it certainly wasn’t something discussed as I become an adult (the natural processes of the body and life). I wonder if I hadn’t moved to an…

biologists define evolution? Biologists define evolution as the cumulative genetic changes that occur in a population of organisms over time. 2. What are Darwin’s four premises of evolution by natural selection? 1. High Productive Capacity- Each species produce more offspring than will survive to maturity. 2. Heritable Variation- Individuals vary in traits that may impact survival. 3. Limits on Population Growth, or a Struggle For Existence- Outside pressure on which individuals will survive.…

Benefits of Natural Forest Fires to Forest Ecology Introduction Since its discovery, fire has fascinated man with its potential. Fire provides light and heat and while it destroys some things that come in contact with it, it is also capable of metamorphosing other things for the overall benefit of life. Natural fires are a routine occurrence in forested areas, especially during hot and dry weather conditions or due to lightning strikes. In the summer of 1988, for example, 42 instances of…