INTERPRETING ECOLOGICAL DATAGraph 1: Rabbits Over Timea. The graph shows ab. The carrying capacity for rabbits isc. During which month were the rabbits in exponential growth?Graph 2: Average Toe Lengtha. In 1800, about how many people surveyed had a 3 cm toe?How many in 2000?b. The data shows thec. In 2000, what is the average toe length?Number of people(in thousands)12010080604020growth curve.Year 2000Year 1800Name:Graph 3: Mexico and USselection has occurred?Length of big toe (in centimeters)May 1stWhat is the average toe length in 1800a. In Mexico, what percentage of the population is between 0-4years of age?In the US?b. Which population is growing the fastest?c. Which age group has the smallest number in both countries?Chart 4: Trapping GeeseIn order to estimate the population of geese in Northern Wisconsin,ecologists marked 10 geese and then released them back into thepopulation. Over a 6 year period, geese were trapped and theirnumbers recorded.a. Use the formula to calculate the estimated number of geese in thearea studied?number of rabbitsb. This technique is calledc. Supposing more of the geese found in the trap had the mark,60(a) MexicoMaleFemale864202468YearJune 1st198019811982198319841985GeeseTrapped101512851080+Date:Age (b) United Statesnovenengnorons↓及顶的MSX的情的HD4949470-74Aug 1st Sept 1stPercentage of population111o216420 246Number withMark(Total number captured) x (number marked)(total number recaptured with mark) would the estimated number of geese in the area be greater or lesser?Chart 5: Mushroom PlotsAnother ecologist uses a different method to estimate the number of mushrooms in a forest. She plots a 10x10 area and randomlychooses 5 spots, where she counts the number of mushrooms in the plots and records them on the grid.35a.Calculate the number of mushrooms in the forest based on the grid data:b. Thie technique is calledChart 6: Snakes & MiceThe data shows populations of snake and mice found in anexperimental field.Year19601970198019902000During 2001a. During which year was the mouse population at zero populationgrowth?b. What is the carrying capacity for snakes?c. What is the carrying capacity for mice?d. What is the rate of growth (r) for mice during 1970?1980?Snakes Mice born100080040060062064021030151415Micedied200300500550600580

Introduction : The two factors used to evaluate a country's population growth are the birth rate…

INTERPRETING ECOLOGICAL DATA Graph 1: Rabbits Over Time a. The graph shows a b. The carrying capacity for rabbits is c. During which month were the rabbits in exponential growth? growth curve. Graph 2: Average Toe Length a. In 1800, about how many people surveyed had a 3 cm toe? How many in 2000? b. The data shows the selection has occurred? 60 8 number of rabbits 20 May 1st June 1st Aug 1st Sept 1st

INTERPRETING ECOLOGICAL DATA Graph 1: Rabbits Over Time a. The graph shows a b. The carrying capacity for rabbits is c. During which month were the rabbits in exponential growth? growth curve. Graph 2: Average Toe Length a. In 1800, about how many people surveyed had a 3 cm toe? How many in 2000? b. The data shows the selection has occurred? 60 8 number of rabbits 20 May 1st June 1st Aug 1st Sept 1st

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter19: Population And Community Ecology

Section: Chapter Questions

Problem 2ACQ: Figure 19.6 If the major food source of seals declines due to pollution or overfishing, which of the...

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Give typing answer with explanation and conclusion 1. Which of the following is most likely to increase the carrying capacity of an area for an organism? Choose ALL that apply A. Creating a migration corridor between patches of suitable habitat B. Harvesting the organism to reduce the population C. Eliminating a disease from the area D. Food source increases E. Climate change causing a mutualist to migrate out of the habitat
b. The graph below shows the population size changes of two animals over an 90-year span. Study the graph and then answer the questions which follow: Hare-Lynx Data 180 160 140 120 100 Hare 80 Lynx 60 40 20 1845 1855 1865 1875 1885 1895 1905 1915 1925 1935 Year a. In what year was the prey population at its highest? b. i. What was the carrying capacity of the habitat for the predator population in 1855? ii. Compare the carrying capacities for both populations and explain why there is a difference. c. Suggest one factor, other than the presence of prey, that may afieot the size of the predator population. d. The graph shows a predator-prey relationship that is based th a temperate climate. Identify one such relationship that exists: i. On a coral reef: ii. In a Barbadian garden: (spuesnoup ui) JaqunN
ulations and Communities rat will be discussed in Lesson 2 after readding the headings. Record your ournal. Details Categorize causes of population changes. Change Causes Size increase 1. 2. Size decrease 1. 2. Complete the diagram below with arrows to chara opulation density. ze of population Relative space available ine limiting factors, and give four examples of thes ting factors:
Direction: Analyze the situation and tell what limiting factor is being described. Choose in the box below the type of limiting factors. Mortality Natality Emigration Immigration Situation Limiting Factor 1. Every year, there's an increase in the population of migratory birds in Candava. Pampanga. 2. The increase of the population of frogs during rainy days. 3. Russian population decline due to Covid-19 effect. 4. Decrease in the population of birds when they move to another place due to unfavorable weather conditions. 5. The population in the Philippines increases due to teenage pregnancy.
Population size increases whena. the sum of birth rate and death rate exceeds the sum ofimmigration and emigration.b. the sum of birth rate and immigration exceeds the sum of deathrate and emigration.Figure 37.20 Opportunistic and Equilibrium Species:A Summary.• High reproduction rate• Many ospring• Each ospring receives littleparental care• Low survival rate for juveniles• Early reproductive maturity• Type III survivorship curve:Opportunistic life history Equilibrium life history• Low reproduction rate• Few ospring• Each ospring receivesextensive parental care• High survival rate for juveniles• Late reproductive maturity• Type I survivorship curve:AgeSurvivorsAgeSurvivors764 UNIT SEVEN The Ecology of Lifehoe2420X_ch37_748-765.indd 764 12/15/16 11:45 PMc. the sum of birth rate and emigration exceeds the sum of death rateand immigration.d. the sum of death rate and immigration exceeds the sum of birthrate and emigration.
Below 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 capacity
Organismsthat produce many offspring would best be characterized by which of thefollowing?a.A convex survivorship curveb.A concave survivorship curvec.A linear survivorship curved.A sigmoidal survivorship curvee.None of the choices apply
Suppose 200 fish are marked and released in a pond. The following week, 200 fish are caught and 100 of them have marks. There are about ______ fish in this pond. a. 200 b. 300 c. 400 d. 2,000
An increase in infant mortality will _______ a populations replacement fertility rate. a. raise b. lower c. not affect
Figure 19.6 If the major food source of seals declines due to pollution or overfishing, which of the following would likely occur? a. The carrying capacity of seals would decrease, as would the seal population. b. The carrying capacity of seals would decrease, but the seal population would remain the same. c. The number of seal deaths would increase, but the number of births would also increase, so the population size would remain the same. d. The carrying capacity of seals would remain the same, but the population of seals would decrease.
When r is a positive number, the population size is (a) stable (b) increasing (c) decreasing (d) either increasing or decreasing, depending on interference competition (e) either increasing or stable, depending on whether the species is semelparous
A population of 1,000 individuals experiences 462 births and 380 deaths in 1 year. What is the value of r for this population? a. 0.842/individual/year b. 0.462/individual/year c. 0.380/individual/year d. 0.820/individual/year e. 0.082/individual/year