What abiotic and biotic consequences has fragmentation from different land-use practices had on structure and function of Southern Louisiana ecosystems?
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- A corn field is harvested and plowed, removing most---but not all---of the vegetation. The field is then abandoned and soon begins to revegetate. (A) Would this be an example of primary or secondary succession? Explain. (B) If the field remains undisturbed, we would expect the plant community to change over time. What changes might you expect? For example, what characteristics might you expect in the early successional species and what characteristics might you expect in the later successional species? For full credit, be sure to explain how the different characteristics are expected to be beneficial at each successional stage. secondary succession. it is not primer. some physical characteristics change over time like size.In what ways are disturbances important for savanna ecosystemsand the plants in them?Which of the following statements about the effects of clear-cutting on the Amazonian forest are true? Select all that apply. a) Soil moisture is likely to decline. b) Nutrient export is likely to decline. c) Species diversity is likely to decline. d) Atmospheric CO2 is likely to decline.
- The Tumucumaque National Park ecosystem is located in the Brazilian states of Amapá and Pará in South America. The biotic (physical) aspects of our Tumucumaque Mountains National Park ecosystem are? Important biotic factors that shape the Tumucumaque Mountains National Park environment are?General Patterns Found Across All Biomes Disturbance is important in determining the set of species found in an area. Naturally, broadleaf trees will replace longleaf pine trees, changing the forest from coniferous to deciduous. However, fire removes the broadleaf species, maintaining the coniferous forest. Before agriculture, the southeastern United States was dominated by longleaf pine, but now broadleaf trees are found where the great coniferous forests once grew. From this change in forest species, what do you know has happened to the frequency of fire in the southeastern United States? There are more forest fires in the southern United States now then there were in the past. There are fewer forest fires in the southern United States now then there were in the past.Why are wetlands sites of high biodiversity and productivity?
- What is the primary difference between primary and secondary succession? What pioneer plant is most likely growing on this rock? What happens to the rock as the plant continues to grow? Name two events that could lead to primary succession:What is the value of biome diversification in an ecosystem? What features of a biome can contribute to the success of an ecosystem or the organisms that use it as a habitat? Can anthropogenic influence play a positive role in biome diversification or can human influence only negatively impact biome diversity?Habitat loss and fragmentation has caused severe damage to a particular type of ecosystem. Name it.
- Why is the redevelopment of lost forestland so essential to combat the effects of global warming?The following age and volume data are for a stand of trees Age(yrs) Volume (cubic units) 10 8 20 20 30 38 40 59 50 77 60 92 70 101 How would you estimate the best biological rotation age? If there is a difference between optimal biologic rotation and economic rotation age, explain why. Where does the growth rate peak?Why is an understanding of biogeochemical cycles essential in environmental science?