Please define ‘r versus K selected’ strategies and then describe how you think organisms with either of these two strategies might respond to habitat change.
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Please define ‘r versus K selected’ strategies and then describe how you think organisms with either of these two strategies might respond to habitat change.
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- Draw on one graph, with N2 on the y-axis and N1 on the x-axis, the isoclines for the twocompetitors with the carrying capacities and competition coefficients listed below. Will thesespecies coexist? If not, which species will win? Competitor 1 Competitor 2 K1 = 200, α12 = 0.4 K2 = 400, α21 =1Using the community assembly theory, provide a framework or explanation on: How do some exotic species outperform locally-adapted native species? Cite specific example(s).Biologically, what conditions are necessary for stable coexistence of competitors? Describe the major ways that species can adapt to enhance the probability of stable coexistence.
- Under which scenario can a hawk successfully invade (or persist among) a population of doves? Group of answer choices C) Lowest resource value (V << C) D) Options A and B E) Options B and C F) Options A, B, and C B) Lower resource value relative to cost (i.e., V > C and V < 2*C) A) When high resource value relative to cost (i.e., V = 2*C)Which one of these statements about COSEWIC is false? COSEWIC's assessments take into account political, social and economic factors. The Species at Risk Act (2002) established COSEWIC as an advisory body. The committee made its first designation in April 1978 and has met annually since then. Members of COSEWIC are wildlife biology experts from academia, government, non-governmental organizations and the private sector responsible for designating wildlife species in danger of disappearing from Canada.Explain what this illustration is trying to convey, and why two indices (Levin’s Normalized Niche Breadth, and Feinsinger’s Proportional Similarity Index) are required
- Compare and contrast species scale vs. system scale goals for conserving both mutualist biodiversity and mutualist ecosystem function. Give a real world example in which one of these approaches is used for mutualism conservation and explain its strengths and weaknesses with respect to conserving mutualism.Question 1 Neutral models emphasize dispersal and chance. Question 1 options: A) True B) False Question 2 Environmental filtering reduces competition. Question 2 options: A) True B) False Question 3 If competition structures a community, then ____________. Question 3 options: A) niches should be widely separated in niche space. B) niche space should be neutral. C) the environment does not filter species. D) there is no niche overlap among species.About adaptation planning, which of the following sentences are true? Select two or more: An adaptation plan identifies the most effective adaptation measures that strive to fulfil the adaptation needs for a particular production system. Risk assessment evaluates the impacts of climate change in terms of their likelihood to occur and severity of the consequences, while vulnerability assessment describes the extent to which a production system or its characteristics are susceptible to or unable to cope with the impacts of climate change. The adaptation measures identified during the adaptation planning process will be implemented by fishers and fish farmers only. Prior to the stakeholder meeting, the entity leading the adaptation planning process needs to make sure that there is no similar climate adaptation planning ongoing or finalized.
- Below is the output of several different models that Caterpillar has built to predic next quarter sales. Model A (3): Weather, recent quarter sales, housing starts Model B (3): Interest rates, worldwide GDP, housing starts Model C (3): Weather, worldwide GDP, housing starts Which model is the optimal combination of explanatory variables a) A b) B (c) C Caterpillar predicting Next Quarter Sales d) D R² R² adj 0.56 0.69 0.59 0.58 0.58 0.57Competition between species on the same trophic tier leads to four potential outcomes, 3 are deterministic (zero sum games where one species goes extinct and the other maximizes their growth to balance at the carrying capacity) and one where both competitors survive, but neither does well. A) This dynamic suggests that extirpation (local extinction) of populations is a far more likely outcome than co-existence. How does this affect management policies aimed at increasing biodiversity and proliferation of inter and intra population and interspecies variation. B) Endangered species are defined by low growth rates (r) and low K (reflecting high demand for resources). What are the implications of both these factors on the outcome of competition scenarios, especially the most common scenario of alternate stable states?According to the resource-ratio hypothesis (a.k.a. R-star), what factor(s) will determine the maximum number of competing species that could possibly coexist in a community? (Note: either one or more-than-one answer could be correct) .what does the number of limiting resources in a community tell us? The number of limiting resources in the community The net primary productivity of the community (NPP). The number of trophic levels that are present in the community. | The intrinsic rate of increase (r) of each species in the community. The colonization rate of each species that can access the habitat.