Chapters 3-4 Ecosystems and Evolution
1. Even though tropical rain forests only cover about 2% of the earth’s land surface, they are home to about half of all terrestrial plant and animal species. By continuing our harmful logging practices and ever-increasing fossil fuel consumption, we are becoming a greater threat to these “endangered” ecosystems. These tropical rainforests are important in that the copious trees take in carbon dioxide and help regulate its levels in the atmosphere, which is important in keeping our air at the right temperature. We are eliminating large areas of trees by destroying these tropical rainforests, and thus helping accelerate climate change due to global warming. Without the trees to take up the greenhouse gas carbon dioxide, the atmosphere will warm. Finally, the continued destruction of tropical rainforests will change regional weather patterns. The diversity of the tropical rainforests will be lost, and a less diverse, less productive tropical grassland may unfortunately replace it.
2. A) The Earth has a fixed supply of nutrients that are recycled through the biogeochemical cycles such as the carbon, nitrogen, and phosphorus cycles. Without nutrients, there is no real “energy.” For example, producers need the nutrients in the soils in order to thrive and make food, convert atmospheric nitrogen into nitrates, etc. Consumers eat the food, and when the consumers die decomposers come and break the remains down into nutrients again, which become part of the soil which the producers live in. Thanks to the decomposers and detritus feeders, the planet is not full of plant litter, animal wastes, garbage, etc.
B) Gravity keeps the atmosphere close to the Earth- if the atmosphere were too far...
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...me the main factor causing the extinction rate to become 100-1000 faster than normal. This is very concerning. I would tell the person that while extinction may be called a “natural process” by textbooks, it is more of a “man-made process” than anything else. From clear-cutting forests to clearing acres upon acres of grassland to polluting the oceans, we are inadvertently causing countless species to become extinct, decreasing the biodiversity of our planet. Loss of biodiversity first has immediate, negative effects on the particular place in which it occurred (i.e. coral reefs), but then the effects will inevitably affect our environments and lives. There is evidence that species richness increases the productivity and stability of an ecosystem, so decreasing biodiversity would result in less productive and less stable ecosystems- both undesirable side effects.
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- Tropical rainforests are an extremely unique and diverse ecosystem that are located around the earth’s equator. They once covered roughly 7% of the world, but due to human encroachment that has dwindled to just 2%. It is a highly moisture rich environment that typically receives anywhere between 60 and 400 inches of rainfall annually and average humidity ranges from 70 to 90%. A high average year round temperature, coupled with the moisture rich environment, creates an ecosystem that allows for a level of biodiversity seen nowhere else on the planet.... [tags: Rainforest, Forest, Tropical rainforest]
1245 words (3.6 pages)
- Carbon Sequestration in Forest Ecosystems Amid growing concerns about increasing concentrations of greenhouse gases in the atmosphere, mitigation techniques that reduce levels of greenhouse gases are receiving attention as a possible remedy for climate change. Forest ecosystems play an important role in the global carbon cycle, but there are still questions about how significant of a role they play and how manipulating management plans affects a forested area’s carbon sequestration potential. Various factors such as land-use history, age of a forest stand, and potential feedback processes must all be taken into account when determining if forests are a feasible method of climate change miti... [tags: Ecosystems]
2418 words (6.9 pages)
- Ecosystems are a system involving the interactions between a community of living organisms in a particular area and its nonliving environment. In the tropical forest there are many living and nonliving organisms that interactive for the daily growth and life in the forest. Tropical forest’s cover about seven percent’s of the earth and contains approximately fifty percent of the worlds’ species. Tropical rain forest is and interesting ecosystem, it contains different and a wide variety of species.... [tags: organisms, endangered, pollution]
587 words (1.7 pages)
- Every species has a unique ecosystem in which it lives. In order to survive, the habitat is where the organisms’ survival needs of food, water, shelter and place to breed is met. According to our reading this week, habitats and niche are terms used to discuss the interaction of individual organisms in populations, and groups of organisms in communities and ecosystems including humans because we are organisms living in the ecosystem also. (Ireland, K. 2013). Each living thing has their own specific habitat and niche, where they live and how their job contributes to their habitat.... [tags: Rainforest, Forest, Tropical rainforest, Life]
1162 words (3.3 pages)
- Ecosystem is best defined in the Millennium Ecosystem Assessment (MA) (2005) Ecosystems and Human Well-Being: Synthesis. Island Press, Washington page 40 as the collection of interrelated things that work or reside within in one area and that carry immediate impact in changes of one to another, within the environment as a whole. Moreover it goes on to add that Ecosystem services as benefits people obtain from ecosystems and distinguishes four categories of ecosystem services. What are services. These are the benefits that are provided by the ecosystems in the way of making the provision of good.... [tags: Ecosystem, Soil, Forest, Oxygen]
1110 words (3.2 pages)
- Introduction While looking at tropical rainforests and temperate forests, one will notice a wide diversity of: species, location and values. Tropical rain forests are located along equatorial regions of the globe, while temperate forests tend to shy away from the planets waistline and reside in areas north and south of the equator. Temperature and rainfall has a profound effect on the control of temperate and tropical rainforests. Diversity of species is influenced by the type of forest where the species is located.... [tags: Ecology]
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- The study of ecology is currently primarily focused upon anthropogenic effects on ecosystems as well as feeding relationships; however, non-feeding interactions are also an important factor in understanding the balance of the ecosystem and identifying issues. These interactions are generally termed disturbances. What constitutes a disturbance. White and Pickett defined it as “any relatively discrete event in time that disrupts ecosystem, community, or population structure and changes resources, substrate availability, or the physical environment” (White 1985).... [tags: Ecology, Ecosystems]
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- Among the many marvels the Earth’s oceans host, kelp forests as well as coral reefs are incredibly diverse ecosystems that bring opportunities for biodiversity and thriving undersea environments. Kelp forests towering above the ocean floor can grow to over a hundred feet tall, providing a dense habitat for creatures living within. Coral reefs can grow to be hundreds of miles wide, as seen with the Great Barrier Reef in the Pacific Ocean. These reefs much like the kelp forests they share the sea with, provide for rich environments teeming with biodiversity and plenty of undersea resources.... [tags: Coral Reefs, Kelp Forests]
1614 words (4.6 pages)
- The meaning of Ecology is the connection that exists between living organisms and their environment. From the largest animal on Earth to the smallest, they all share our world with us. The ecosystem is connected by the flow of matter and energy and as organisms eat and dispose of matter it supplies them to sustain life. Across the planet various densities of uneven configurations accumulate minerals and nutrients. For example “Energy necessary for all life processes reaches the earth in the form of sunlight.... [tags: environment, ecosystem, organisms, energy]
1054 words (3 pages)
- Factors of Community: 1. Interactions between the climate and topography a. “Rainfall, soil, temperature” 2. The food and resources that grow 3. Other specific resources necessary for a species to survive and adapt to. (Ecological niche) 4. Species interaction 5. Physical disturbances, addition/removal of certain species -These factors determine population sizes of an ecosystem. -Conditions of arctic regions don’t allow many animals to live there due to the low temperature. Niches: (all relationships in which species engage in order to survive and reproduce) -Fundamental Niche is a theoretical niche, where there are no constraints or limited resources) -Realized Niche is the ac... [tags: essays research papers]
2403 words (6.9 pages)