If you are a biologist interested in working in the tropical rainforest’s, briefly describe a research study you could complete at each level in the biological hierarchy, starting from the organisms level to the biosphere. 2. What are the two biotic variables that dictate type of terrestrial bimbo? Do aquatic and marine systems rely on the same two variables? Why or why not? 3. Which of the terrestrial boomers Is the most vulnerable to anthropogenic (human) Influence and why?
What Is being affected? 4. Create a table that lists the bimbo, biotic variables that are elevate, and examples of organisms that would reside there. 5. Why arena species all over the planet? What influences dispersal? 6. What is the value of describing populations using density, dispersion, and demographic information? Be specific and be sure to demonstrate your understanding of the terms. 7. What are the two mall population growth models? What organisms may follow those growth models? 8.
What factors influence the populations described in #6? How do density-dependent and density-independent factors play a role? Chapter 41 1 . What are the five mall types of Interspecies Interactions discussed In the chapter? Describe each. . When Interactions result In a negative outcome for one species (e. G. Parasitism, predation, herbivore), the species that is affected will typically have a response to prevent that negative outcome. Describe examples of how species respond to these effects. 3.
How do invasive species affect the natural populations? 4. What is the difference between a food chain and a food web? 5. What type of ecosystems would likely demonstrate bottom-up control? Top-down control? Why? 6. Is ecological disturbance a bad thing? Why or why not? Give an example to support your answer. 7. How did MacArthur and Wilson demonstrate the connection between area and species richness & diversity? Chapter 42 1 . Why do ecologists need to understand the laws of thermodynamics? How do they apply to an ecosystem? 2.
How much energy Is being transferred for each atrophic level? 3. What is primary production? What limits primary production in aquatic ecosystems? Why is primary production so low in the open ocean? 4. Why can we say that biochemical cycles are nature’s way of recycling? 5. List the inputs and outputs (to the atmosphere) of each of the following biochemical cycles: a. Water cycle b. Carbon cycle d. Phosphorus cycle Chapter 43 1. What are the three levels of biodiversity? Is one level more important to study than the others?
Why or why not? 2. What are the threats to biodiversity? Describe specific examples of each. 3. Why are small populations at risk? Describe specific issues associated with small populations. 4. Should we preserve land in multiple small patches or one large patch (SOLOS theory – single large or several small)? Using your knowledge of landscape structure and biodiversity, how would you establish a protected area and why? 5. How does climate change affect species diversity and distribution? 6. What do we mean by the term “sustainability’?