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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 distribution2. Imagine that a scientist suggests that the size of an insect population depends on the temperature. What observations must this scientist make in order to collect evidence to support his or her hypothesis? A. The scientist must observe the insect population only in winter. B. The scientist must observe the insect population in the laboratory. C. The scientist must observe the insect population in different areas. D. The scientist must observe the insect population throughout the year. Explanation:10. 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 males
- 4. There was a fish kill because of the higher temperature below the water. * density-dependent limiting factor density-independent limiting factor2. As a fish farm manager, you need to prepare a pond of size 1.0 Ha for stocking 5.0 g Nile tilapia fingerlings. a. Describe the steps you will take to successfully do the stocking b. Calculate the total number of fingerlings that will be stocked if the stocking rate is 10 fish/m2. c. Suggest with reasons the type, pellet size and quantity of feed you would give to the stocked fish/day in the first week of stocking.2. 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.
- 3. A 1998 study of grizzly bears in the Kananaskis area estimated the population size at 48 to 56 individuals. The study area encompassed 4000 hectares. a) Use the values to determine maximum and minimum density estimates for the population.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 factor
- 3. 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.
