5. What is the average percentage of warrens attacked in each soil type. Soil type Average percentage of warrens attacked Stony banks Loam Stony hills Stony pediments Desert loam Sand dunes
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The data shown in Table 1 were collected from a study of predation on rabbit warrens and nests found on different soil types across seven regions of Australia between 1996-1998. Using these data, answer the questions that follow.
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- Figure 5. This figure shows the number of individuals of three tree species (Blue Pine, Black Oak, and Rusty Cactus) on a woodlot in eastern Ontario, Canada. For each statement, select TRUE if it is consistent, or FALSE if it is not consistent with the information presented above. This woodlot experienced a fire in 1969. That suggests that this figure shows primary succession in this woodlot from 1970 to 2015. options: True FalseMule Deer Use the passage to answer the question. This image shows a male mule deer (Odocoileus hemionus), which is native to western North America. Named for their large ears, mule deer are hunted for sport and food under strict management practices, such as designated hunting seasons and limits on how many deer a hunter can take. A) In a short paragraph, propose a hypothesis to test the effect of a zoned reserve on mule deer populations. Justify your hypothesis based on your knowledge of zoned reserves. B) In 1-2 short paragraphs, outline a field experiment to test your hypothesis on the effect of a zoned reserve on mule deer populations. Describe your control group, experimental group, and the data you would collect. Identify at least two environmental factors that could affect your data collection and how you would address them, if possible.Two winters ago, a species of bird called the pine siskin began appearing in droves at backyard bird feeders in my hometown. We would occasionally spot a few each winter, but numbers were unusually high that year. The next winter, it seemed as if all of the "extra" pine siskins had disappeared. Numbers fell back to the levels that we were used to seeing. Use the concept of carrying capacity to explain the irruption of pine siskins described in the scenario. Provide your answer in a standard paragraph using complete sentences
- Andinomys colombianus is a rat species in colombia that plays an important role in the environment help spreading seeds of the plants that also inhabit their areas. Which 4 of the following would be the most important to constructing a population monitoring plan and budget to help stop the rapid decrease of this species and include the information of the four characteristics in relation to the species and a possible plan. 1.Biotic Interactions 2.Environment 3.Demography 4.Morphology 5.Physiology 6.Genetics 7.Distribution 8.BehaviorSince 2000, three mammal species have been declared extinct by the IUCN: the Bramble Cay melomys (Melomys rubicola), Christmas Island pipistrelle (Pipistrellus murrayi) and the Saudi gazelle (Gazella saudiya). What is the extinction rate of mammals, in MSY, since 2000 (+/-0.01)? Assume for our purposes that 5,436 mammals have been monitored over the past 20 years.What is the Predator Release Hypothesis? Explain how it works. What is ONE principle or idea that we studied in this course that can be illustrated using it (other than predation). Explain how the predator release hypothesis fits into that idea.
- Suppose that researchers wanted to examine the combined effects of an introduced predator (a trout) and the trematode parasite Ribeiroia on amphibian populations. To do this, they established frog populations in each of 40 artificial ponds. Each pond was assigned at random to one of four treatments (10 ponds per treatment): 1) neither trout or parasites were added to the pond (the "No trout, no parasite" treatment); 2) no trout were added but parasites were added ("No trout, parasite added"); 3) trout were added but parasites were not added ("Trout added, no parasite"); and 4) both trout and parasites were added ("Trout added, parasite added"). Each pond contained refugia where tadpoles could avoid attack by trout, to avoid fish predators driving frog populations to extinction in an artificial pond, unlike what typically occurs in a natural pond. After two breeding seasons, the researchers estimated the density of frogs in each pond. The results are shown in the table and the figure.…https://media.hhmi.org/biointeractive/click/lionfish-invasion/introduction.html This section starts explaining how scientists use the population survey data that are collected to model how the lionfish population changes over time. These models enable scientists to make predictions about population changes, which is an important element of developing plans for managing the lionfish population You'll be using the discrete-time logistic model that is described on this page in future parts of the case study, so make sure to carefully read through the explanation of this mathematical model. Even if you don't have a strong math background, this case study walks through the equation step by step. 6)Which of the following are constant terms in the discrete-time logistic model? choose all that apply a)Nt b)ΔN c)t d)K e)Δt f)rmax,d g)None of theseA particular species of butterfly is capable of surviving and reproducing both in open grasslands and in forested habitats. However, in the forested habitats this butterfly is heavily predated (eaten) by a forest bird species, so the beetle species avoids these areas and is generally found only in grasslands. Which of the following statements are true? Answer choices: A. The butterfly's realized niche includes both grasslands and forested habitats. B. The butterfly's fundamental niche includes only grasslands. C. The butterfly's realized niche includes only grasslands. D. The butterfly's fundamental niche includes both grasslands and forested habitats E. The butterfly and the forest bird species are in competition.
- 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 0.577) The following data has been obtained from the coastal haddock (Melanogrammus aeglefinus) fishery of Maine. The fishing season was divided into 10 periods. Period Catch per Period 1 208 2 195 3 168 4 132 5 91 6 80 7 63 8 56 9 48 10 33 It was also recorded that five fishing trawlers were in operation during each period of the fishing season. Question: What was the size of the haddock population originally available to the fishery?Which statement about the classic competition experiments involving two Paramecium species is FALSE? The experiment involved interspecific competition. The experiment involved exploitation competition. Each species, when grown alone, exhibited logistic growth. When grown together, the species exhibited logistic growth, but each reached a lower carrying capacity than when it was grown alone.