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- 11. Calculate the estimated population size, N, given a study that initially marked 100 animals and subsequently captured 50, of which 25 were marked. 12. When sampling a species that has clumped distributions, which approach listed below is best? A) sampling at random locations B) counting every individual C) calculating an ecological density D) assuming a uniform distribution10. Effective population size refers to the number of individuals which can participate in the reproduction process. Which of the following proportions of individuals would bring about the highest effective population size? 20 females and 80 males 70 females and 30 males 45 females and 55 males 35 females and 65 males2. In a river in Ontario, 351 Atlantic salmon were captured and fin-marked with numbered anchor tags. Two weeks later, a total of 132 Atlantic salmon were re-captured, and 12 carried the anchor tags. Estimate the Atlantic salmon population in this river during the study.
- I am doing an ecology research paper on Brown Anole Lizard Distribution, to perform my experiment I will choose 4 spots in a park such as a lake, a shaded tree, a boardwalk, and a sidewalk. then to quantify my results I will go three times a day for five weeks and count how many lizards I see in each area. I need help thinking of a good research question? it does not have to be long.3. The population of rats in a field had a tremendous decrease because of the absence of snakes. * A. density-dependent limiting factor B. density-independent limiting factor3. Explain why it is common practice to also collect information about the physical environment when sampling populations: Quadrat 5 Quadrat 4 Quadrat 3 Quadrat 2 Quadrat 1 0 QUADRAT Height/m Light / arbitrary units Humidity / percent Temperature / °C 1 0.4 40 99 2 0.8 56 88 3 1.2 80 50 Percentage cover 68 72 76 14.3 14.2 Kichen 12.1 12.2 13 4 5 1.6 2.0 72 78 intain: 100 Red stem moss Fern moss Snake moss Star moss Eye brow moss Broad leaved star moss Tree moss Lichens (various species) 4. The figure (above) shows the changes in vegetation cover along a 2 m vertical transect up the trunk of an oak tree (Quercus). Changes in the physical factors light, humidity, and temperature along the same transect were also recorded. From what you know about the ecology of mosses and lichens, account for the observed vegetation distribution:
- 2. Complete the following sentence. "Transhumance Is the movement of livestock to new pastures." OA. Annual B. Temporary O C. Seasonal OD. Irregular1. Discuss some limitations of the mark and recapture method. 2. Discuss reasons why population numbers would be important and how this data could be used to manage wildlife populations.5. Which of the following total fertility rates would be most likely to reduce the worldwide human population to less than 7 billion people over the next century? A. a total fertility rate of 4.1 B. a total fertility rate of 3.5 C. a total fertility rate of 2.7 D. a total fertility rate of 2.2 E. a total fertility rate of 1.4
- 2. What is the generation time, net reproductive rate, and intrinsic rate of increase? 3. Plot the change in population size over time (for 10 years) starting with 10 individuals. 4. What would the female population size be in 25 years? 5. If hares were an endangered species, what other kinds of information would you need to gather to support your predictions made in 3 and 4?1. Based on the graph, determine the population of carabao in:i. 4 years: _______ii. 5 years: _______iii. 6 years: _______2. What is the maximum carrying capacity of carabao in the given ecosystem?3. How many years did it take for the carabao to reach its carrying capacity? Explain your answer.3. A population of 1,492 Baltimore Orioles is introduced to an area of Nerstrand woods. Over the next year, the Orioles show a death rate of 0.395 while the population drops to 1,134. What's the birth rate for this population? Is this proving to be a suitable habitat? 4.780 turkeys live in Merriam township, which is 92 acres in size. The birth rate is 0.472 turkeys/ year. The death rate is 0.331 turkeys/ year. What is the population density? а. b. What is dN/dt? с. Predict N after one year, assuming dN/dt stays constant. One dandelion plant can produce many seeds, leading to a high growth rate for dandelion populations. If a population of dandelions is currently 40 individuals, and rma= 80 dandelions/month, predict dN/dt if these dandelions would grow exponentially. 5. Imagine the dandelions mentioned in #5 cannot grow exponentially, due to lack of space. The carrying capacity for their patch of lawn is 70 dandelions. What is their dN/dt in this logistic growth situation? 6.
