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- The rate of plant growth on an island near Isle Royale is such that the carrying capacity of moose on the island is 450. Currently there are 450 moose present. The environment is stable and free of wolves. One day, 200 additional moose arrive on the island. What is the expected number of moose on the island 30 years later, assuming conditions do not change?7) 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?In 1970 the deer population of an island forest reserve about 518 square kilometers in size was about 2000 animals. Although the island had excellent vegetation for feeding, the food supply obviously had limits. Thus the forest management personnel feared that overgrazing might lead to mass starvation. Since the area was too remote for hunters, the wildlife service decided to bring in natural predators to control the deer population. It was hoped that natural predation would keep the deer population from becoming too large and also increase the deer quality (or health), as predators often eliminate the weaker members of the herd. In 1971, ten wolves were flown into the island. The data collected during this program are shown in the following table. The Population Change is the number of deer born minus the number of deer that died during that year. Fill in the last column for each year. The first has been calculated for you. Then graph the deer and wolf populations on the graph below.…
- In 1970 the deer population of an island forest reserve about 518 square kilometers in size was about 2000 animals. Although the island had excellent vegetation for feeding, the food supply obviously had limits. Thus the forest management personnel feared that overgrazing might lead to mass starvation. Since the area was too remote for hunters, the wildlife service decided to bring in natural predators to control the deer population. It was hoped that natural predation would keep the deer population from becoming too large and also increase the deer quality (or health), as predators often eliminate the weaker members of the herd. In 1971, ten wolves were flown into the island. The data collected during this program are shown in the following table. The Population Change is the number of deer born minus the number of deer that died during that year. Fill in the last column for each year. The first has been calculated for you. Then graph the deer and wolf populations on the graph below.…In 1929, 13 white-tailed deer were introduced to an isolated island with no natural predators. A survey was conducted once a year to estimate the population of deer on the island. The table shows the deer population over the first five years on the island. The deer fed on many of the native plants found on the island, including the California false indigo, a thornless shrub that is a preferred food source on the island for deer. Based on the data, which of the following graphs correctly predicts the population of California false indigo from 1929 to 1941? Year of Survey Population of Deer 1929 13 1932 29 1935 66 1938 157 1941 398 image 1 because the California false indigo will be able to reproduce faster than it can be consumed by the deer and will be unaffected by the deer population, maintaining its current population image 2 because the increasing number of deer will help spread seeds of the plant and lead to a rise in…Trumpeter swans were once widespread and abundant in North America. However, a combination of heavy hunting pressure and habitat lost drastically 4 reduced the species’ population down to less than 70 individuals in the wild by the mid-1930s. By the mid-1980s, Trumpeter swans were more prevalent again in Alberta, especially near Grande Prairie. The following graph depicts the estimated number of Trumpeter swans in Alberta, carried out at five-year intervals from 1985 to 2010. What growth pattern of the Trumpeter swan population in Alberta is being observed? What environmental conditions allow the growth pattern that you identified? What may cause the growth pattern that is being observed to change?
- Zebra mussels are an aquatic invasive species that are threatening the diversity and abundance of native species in the lake ecosystems of Alberta. Sylvan Lake is a beautiful recreational lake located in central Alberta. It has a total area of 43 km2. If the population of zebra mussels is estimated to be 128 mussels/200 km2, calculate the size of the zebra mussel population in Sylvan Lake. Express your answer as a value rounded to one decimal place. AnswerA mess of 40 iguanas moved to a new island which is so large that the carrying capacity is essentially non-existent. The growth rate for these island iguanas was 0.6 and they have a generation time of 2 years. How many iguanas do you expect to find on the island after 6 years? (Show your work. Round your final answer to the nearest whole iguana and clearly indicate your final answer).Data set 1 Date of peak cherry-blossom bloom, Kyoto, Japan May 1st Trend Apr 14th Apr 1st 2021 Mar 26th Mar 25th 800 1000 1200 1400 1600 1800 2020 Year Source: Yasuyuki Aono, Osaka Prefecture University The Economist Data set 2 Cherry blossoms peak bloom dates and March temperatures over time (1921-2011) 4/29 - 60 55 4/19 50 4/9- 45 3/30 - 40 3/20 Peak bloom dote 35 -March temperature 3/10 30 1919 1939 1959 1979 1999 Year Prompt- What is the effect of global warming on the blooming of cherry trees in Japan and Washington DC? Write your evidence section including the following: * Description of the change in blooming times in Japan including quantitative data (numbers) from the graph. * Description of the change in blooming times in Washington DC including quantitative data (numbers) from the graph. MAY 15 ottv MacBook Air Bloom date emperature
- What if we were able to restore some critical salmon habitat, like the forests surrounding the spawning streams? To test this restoration, increase K to 40,000 fish. What would that do to the MSY value? [ Select ] Does this mean you would be able to harvest more or less fish? [ Select ]A population of boreal toads has a current size of 100 and time steps are measured in years. If the instantaneous rate of increase is 0.8 (toads/(toadXtime)), what will the expected population size be after two years? Note: You need to first figure out which equation to use for this problem. O 64 toads O 117 toads O 495 toads O 6400 toads No toads will be left because the instantaneous rate of increase is less than 1.0.A continuously growing population of bears has a population size of 500 and its intrinsic rate of increase is 0.07 per year. Assuming that this rate of increase remains the same, about how long should it take for the population to reach 1,000? (Note: “e” is about 2.7 and the natural logarithm of 2 is about 0.70).