EBK BIOLOGY
6th Edition
ISBN: 8220106777640
Author: Maier
Publisher: PEARSON
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Chapter 15, Problem 1AAATB
A researcher captures 50 penguins, marks them with a spot of paint on their bills, and releases them. One month later, the researcher returns, captures another 50 penguins, and notes that only 1 has a previous mark. What is the likely size of the total penguin population in the researcher’s study area?
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Chapter 15 Solutions
EBK BIOLOGY
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- You visit the Apalachicola National Forest and capture, mark and release 30 fence lizards. A week later you return and capture 25 lizards, 5 of which are recaptures from the previous sample. What is your best estimate of the lizard population size?arrow_forwardYou are trying to estimate the population size of a school of fish in the Florida Keys. The first time, you sample and mark 37 sardines. The second time around, you capture 40 sardines and 13 of them were already marked. What is the estimated population size? Show your work!arrow_forwardIn an effort to measure the size of a bluegill population in a pond, you set 10 traps for bluegills. You catch and mark 40 with a tag on the tail fin and then release them. A week later you return to the pond and set 10 traps and you catch 40 more, of which 8 have a tag on the tail fin. What is the best estimate of the bluegill population in the pond?arrow_forward
- To measure the population of lake trout in a 250-hectare lake, 100 individuals were netted and marked with a fin clip, and then returned to the lake. The next week, the lake is netted again, and out of the 300 lake trout that are caught, 15 have fin clips. Using the capture-recapture estimate, the lake trout population size could be closest to? Also, what formula do I use to solve this problem? Thank You!arrow_forwardA pest control technician captures and applies ear tags to 24 brown rats, which he then releases. A week later, he traps 100 brown rats, 8 of which have ear tags. Estimate the total population of brown rats in this area.arrow_forwardA population of wolves in a national park is known to be 150 individuals. As wildlife ecologist, you are tasked with assessing the accuracy of the mark and recapture technique. At the start, you mark 30 wolves, and your recapture yields 20 wolves, 5 of whom are marked. State whether the mark and recapture data results in an over or underestimation of the actual population size, and show work to support your claim.arrow_forward
- How do you calculate N (population size)? Is the mark-recapture method a reliable way to estimate population size?arrow_forwardAfter examining two specific organisms on Movebank.org, consider the movement trends of the two organisms and discuss the importance of this type of data. Consider the resources related to tracking methods and discuss the benefits of this kind of research in understanding and protecting wildlife populations. Is it important to know the details of wildlife populations? Is there a point do where scientists go too far? Share your opinion on the importance of knowing the size of a given population and defend your position.arrow_forwardMark Recapture can be written as M N = R Define each term. Use this equation to answer the following question. Show your work. A biologist for Mosaic fertilizer company catches 26 Florida scrub jays as part of their monthly environmental monitoring. Each bird is given a band. The next month, they catch 32 birds. 13 of the birds have bands. What is the estimated population size of the birds in that area?arrow_forward
- Click to see additional instructions The ecology lab did a mark-recapture study on grasshoppers in a field at Possum Creek MetroPark. They caught and marked 52 individuals. The next week, they caught 92 individuals, 11 of which had been previously marked. Which of the following is the best estimate of crayfish population size in the stretch of stream sampled? Round to the nearest individual.arrow_forwardThis figure plots the breeding populations of fur seals as they recovered from uncontrolled hunting. Based on this graph, what is the approximate carrying capacity of the fur seal's breeding habitat? 10 a) about 1,000 seals b) about 5,000 seals 6. c) about 10,000 seals 1915 1925 1935 1945 Year Data from K. W. Kenyon et al., A population study of the Alaska fur-seal herd, Federal Government Series: Special Scientific Report-Wildlife 12 (1954). © 2018 Pearson Education, Inc. Breeding male fur seals (thousands)arrow_forward(Number marked × total number recaptured)# recaptured with mark/Number marked × total number recaptured# recaptured with mark The formula above is the equation for estimated population size using the Mark and Recapture method of population estimation. I initially catch and tag 10 rabbits. Later I recapture 50 total rabbits and 10 of those are marked. What is the estimated population size of this rabbit population? Question 22 options: 500 rabbits 20 rabbits 2 rabbits 50 Rabbitsarrow_forward
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