89)You study a population of mussels recently introduced to a section of the Rideau River 8 years ago. You know that 13 mussels were originally let go in the river by a resident. These mussels have no predators. You know from your research that, under ideal conditions, the instantaneous rate of increase of this mussel species is 0.16. You also think the conditions on the river were ideal when the mussels were introduced. After surveying the food available in the river, you estimated that there is enough food to support a population of 11,200 mussels. How many mussels do expect to be in the river now?

You study a population of snails recently introduced to a small lake 10 years ago. You know that 7 snails were originally let go in the lake by a cottager. The lake has no snail predators nor any other species occupying the same or a similar ecological niche. You know from your research that, under ideal conditions, the instantaneous rate of increase of this snail species is 0.5. You also think the conditions on the lake were ideal when the snails were introduced. After surveying the food available in the lake, you estimated that there is enough food to support a population of 1696 snails. How many snails do expect to be in the lake now?

Do the questions below the mosquito please

116 2. In 1919 a researcher by the name of Dahl wanted to estimate the number of trout in a Norwegian lake. The trout were subject to fishing so it was important to know how big the population was in order to manage the fish stock. He captured and marked 109 trout in his first sample. A few days later, he caught 177 trout in his second sample, of which 57 were marked. Use the Lincoln index (on the previous page) to estimate the total population size: Size of first sample: Size of second sample: Number marked in second sample: Estimated total population: 3. Discuss some of the problems with the mark and recapture method if the second sampling is: Left too long a time before being repeated: (b) Too soon after the first sampling: 4. Describe two important assumptions being made in this method of sampling, which would cause the method to fail if they were not true: (a) (b) 5. Some types of animal would be unsuitable for this method of population estimation (i.e. would not work). (a) Name…