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A biologist determines the growth rate of a population of 198 frogs in a marsh near
Beaverhill Lake, Alberta, to evaluate the quality of the environment. The researcher finds
that, in one year, 34 were born, 86 died, 12 migrated into the marsh, and there was no
emigration.
a. frogs are considered an indicator species for the quality of the environment. Determine whether the growth rate of this population in one year is a cause for concern. if so, what might the concerns be?
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- O Villay Use the passage to answer the question. Mule Deer A) In a short paragraph, propose a hypothesis to test the effect of a zoned reserve on mule deer populations. Justify your hypothesis based on your This image shows a male mule deer (Odocoileus hemionus), which is native to western North America. Named for their large ears, mule knowledge of zoned reserves. deer are hunted for sport and food under strict management B) In 1-2 short paragraphs, outline a field experiment to test your hypothesis on the effect of a zoned reserve on mule deer populations. Describe your control group, experimental group, and the data you would collect. Identify at least two environmental factors that could affect your data collection and practices, such as designated hunting seasons and limits on how many deer a hunter can take. Imagine a scenario where the local mule deer population has declined after a harsh winter. Wildlife management agencies have how you would address them, if possible. proposed…Lake Winnipeg is a shallow lake composed of two basins: a wide north basin and a narrow southbasin that provides a habitat for over 50 different species of fish. Each of the statements belowinvolves a situation that will affect the growth of a population. Classify each of the statements asDD (density dependent) or DI (density independent) and give a reason for your choice.1. Rainbow smelt and yellow perch attempt to occupy the same area. The more aggressive smeltsurvive; the perch do not. __________________________________________________2. A severe flood brings a lot of sediment and silt into Lake Winnipeg. The turbidity of the lakeincreases greatly. ________________________________________________________3. Since northern pike prey on yellow perch, an increase in the perch population causes anincrease in the pike population. _______________________________________________4. Many fish die due to an increase in water…Mule Deer Use the passage to answer the question. This image shows a male mule deer (Odocoileus hemionus), which is native to western North America. Named for their large ears, mule deer are hunted for sport and food under strict management practices, such as designated hunting seasons and limits on how many deer a hunter can take. A) In a short paragraph, propose a hypothesis to test the effect of a zoned reserve on mule deer populations. Justify your hypothesis based on your knowledge of zoned reserves. B) In 1-2 short paragraphs, outline a field experiment to test your hypothesis on the effect of a zoned reserve on mule deer populations. Describe your control group, experimental group, and the data you would collect. Identify at least two environmental factors that could affect your data collection and how you would address them, if possible.
- Mark 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?Which of the following best describes bycatch? a. dividing catch of marine life among fishing boats b. bonus catch of marine life, such as increased numbers of intended catch c. unintentional catch of nontarget marine life in fishing gear d. catching too much of a target species of fishA population is likely to increase in size ifa. there are more postreproductive adults than juveniles.b. parasites increase in abundance.c. its population pyramid is narrower at the base than inthe middle.d. its reproductive rate is greater than replacement levelfertility.
- Which of the following is true of overexploitation? Select ALL that apply. a Only animals are affected by overexploitation. b Overfishing is due to modern fishing techniques that can take a lot of fish at once. c Amphibians are overexploited for food, medicine, and research. d Overexploitation means harvesting species at a rate slower than the population can recover. e Many birds are overcollected for the pet trade.The type of place where a species typically lives is called its _______. a. niche c. community b. habitat d. populationA species' ______ is all the habitats in which it can live, and all of the resources it is capable of exploiting. A. realized niche B. fundamental niche
- Carrying capacity is defined as a species’ average population size in an environment. Which of the following resulted to exceeding carrying capacity in a particular environment? a. increasing birthrates, decreasing deathrates, increasing immigration and no emigration takes place b. increasing birthrates, decreasing deathrates, decreasing immigration and no emigration takes place c. increasing birthrates, decreasing deathrates, decreasing immigration and increasing emigration d. decreasing birthrates, increasing deathrates, increasing immigration and increasing emigrationBelow is a table that shows the changes in a population of domesticated rabbits. What is the most likely explanation for why size of the rabbit population remained relatively constant from 1990-1992? Year 1986 1987 1988 1989 1990 1991 1992 Population 601 732 769 800 816 815 816 O a. The population suffered from a new disease O b. A new predator was introduced c. The rabbit's prey source was killed off due to hunting o d. The population reached its carrying capacityA recent United Nations analysis report gathered data on declines in biodiversity across the world. Using the graphs provided, which statement shows an area of concern and is an alternative to the general hypothesis "Humans are responsible for a significant increase in the extinction rate among species in the world today as a result of damage caused to the environment"? A. Fertilizer use in developing countries should be encouraged to decrease the extinction rate B. Decreasing air pollution in the least developed countries would decrease species survival rate C. Protection of key biodiversity areas should be a priority for developed countries to lower the extinction rate D. Assisting developing countries with more sustainable methods of extraction of living biomass would increase species survival rates