Aquatic ecosystem

Presence of carnivores helps to maintain the integrity of ecosystems throughout the world (Soulè and Terborgh, 1999). Many carnivores are capable of altering trophic structure and biodiversity through a process known as top-down control (Elmhagen and Rushton, 2007). Through this, carnivores are able to prevent the overabundance of herbivores. If uncontrolled, an explosion in herbivore population density would increase the grazing pressure that would ultimately threat the survival of the…

Niche that the organism fills The ecological niche or niche of an organism is the place and role in nature. This encompasses what it does, who it feeds, what it feed on as well as what it pollinates. Considering the role that the Brenton Blue butterfly fills, we find that like other butterflies, it serves as a pollinator. In this case, the Brenton Blue is a pollinator for its food plant, Indigo (scientific name Indigofera erecta). When the butterfly lands on the plant to feast on the nectar…

RICHNESS: is the total number of different species in the area • RELATIVE ABANDANCE: is the proportion each species represents in that certain measured area. we recognize three types of biodiversity 1.genetic diversity 2.species diversity and 3.ecosystem diversity ( COUNTRY LIFE ,April 2011.) Species diversity means a measurement of species richness and evenness as well as the variety of organisms…

In the literature, different equations are used to calculate the energy requirement for birds (Emmans, 1974, Peguri and Coon, 1988, NRC, 1994, Sakomura et al., 1993, 2006), the factorial model has been the basis for the elaboration from these models, estimating the requirements consider the differences in weights, body composition, potential for growth and production of the animals, as well as the environment. The factorial method is based on the principle that the requirement in energy or…

Human Threats: For both of these species the common habitat is the Marram grass and fresh water regions within the Nature Reserve. As there are many contributing factors to the loss and damage of both of these habitats, it is difficult to pinpoint which factor causes the most destruction. Habitat loss and fragmentation, an overall decline in groundwater quality, water pollution incidents, water shortages and predation from feral populations such as ducks and competition from introduced exotics…

fly on Jacaranda trees compared to infestation levels on indigenous Bush Willow trees. By Cian MacFie Hyde Park High School Table of Contents Introduction Alien Invasive plant species are a large threat to ecosystems all over the world today and have many negative consequences for biodiversity (van Wilgen et al. 2011). Thousands of alien invasive plants have been introduced into South Africa with some becoming naturalized and some becoming invasive…

anacondas that have entered Florida's ecosystem are native and are many problems to the native species that are already inhabitants of the Everglades. What these pythons have done is they are distorting the natural food chain of that ecosystem this is drastically changing…

a personal property that is valuable (Robbins, et al. 69). Similarily, the American Forest Foundation recognizes and supports forest owners who have used their own human labor to transform forests into natural property that provides a variety of ecosystem services. One of the American Forest Foundation’s programs, the American Tree Farm System (ATFS), has collaborated with family-owned forests for seventy-five years to help them face many challenges, including the ongoing threat of wildfire, and…

natural recourses, harming ecosystems, using fossil fuels and population growth are major contributing factors in harming our environment in the 21st century. Natural resources stated by Withgott are sources people take from the environment in order to survive. Examples of natural recourses consist of air, water, wood, oil, and wind (p.3). Natural recourses are an issue…

The Hydra You have just taken a hike through the woods and then you discover a salt water lake. Seeing a strange portal, curious, you swim towards it. You go on to the miniscule island that the portal is on. As you start to get near the portal a thick fog starts to form and you can’t see anything. The ground starts to tremble at your feet as a gigantic figure rises from the shadows. As the gigantic shadow looms over you it starts to stomp towards you, you are about to fall down as it gets…