Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 45, Problem 4RQ
Which of the following methods will tell an ecologist about both the size and density of a population?
- mark and recapture
- mark and release
- quadrat
- life table
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Quadrat sampling is a method by which organisms in a certain
proportion (sample) of the habitat are counted directly. As with all
sampling methods, it is used to estimate population parameters
when the organisms present are too numerous to count in total.
It can be used to estimate population abundance (number),
density, frequency of occurrence, and distribution. Quadrats
may be used without a transect when studying a relatively uniform
habitat. In this case, the quadrat positions are chosen randomly
using a random number table.
The general procedure is to count all the individuals (or estimate
their percentage cover) in a number of quadrats of known size and
to use this information to work out the abundance or percentage
cover value for the whole area. The number of quadrats used and
their size should be appropriate to the type of organism involved
(e.g. grass vs tree).
Estimated
average density
Total number of individuals counted
Number of quadrats X area of each quadrat
Guidelines…
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?
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.
Chapter 45 Solutions
Biology 2e
Ch. 45 - Figure 45.2 As this graph shows, population...Ch. 45 - Figure 45.10b If the major food source of the...Ch. 45 - Figure 45.16 Age structure diagrams for rapidly...Ch. 45 - Which of the following methods will tell an...Ch. 45 - Which of the following is best at showing the life...Ch. 45 - Humans have which type of survivorship curve? Type...Ch. 45 - How is a clumped population distribution...Ch. 45 - Which of the following is associated with...Ch. 45 - Which of the following is associated with multiple...Ch. 45 - Which of the following is associated with the...
Ch. 45 - Species with limited resources usually exhibit...Ch. 45 - The maximum rate of increased characteristic of a...Ch. 45 - The population size of a species capable of being...Ch. 45 - Species that have many offspring at one time are...Ch. 45 - A forest fire is an example of regulation....Ch. 45 - Primates are examples of: density-dependent...Ch. 45 - Which of the following statements does not support...Ch. 45 - Which of the following events would not negatively...Ch. 45 - A country with zero population growth is likely to...Ch. 45 - Which type of country has the greatest proportion...Ch. 45 - Which of the following is not a way that humans...Ch. 45 - The first species to live on new land, such as...Ch. 45 - Which type of mimicry involves multiple species...Ch. 45 - A symbiotic relationship where both of the...Ch. 45 - Which of the following is not a mutualistic...Ch. 45 - The ability of rats to learn how to run a maze is...Ch. 45 - The training of animals usually involves...Ch. 45 - The sacrifice of the life of an individual so that...Ch. 45 - Why are polyandrous mating systems more rare than...Ch. 45 - Describe how a researcher would determine the size...Ch. 45 - The CDC released the following data in its 2013...Ch. 45 - Why is long-term parental care not associated with...Ch. 45 - Describe the difference in evolutionary pressures...Ch. 45 - Describe the rate of population growth that would...Ch. 45 - Describe how the population of a species that...Ch. 45 - Give an example of how density-dependent and...Ch. 45 - Describe the age structures in rapidly growing...Ch. 45 - Since the introduction of the Endangered Species...Ch. 45 - Describe the competitive exclusion principle and...Ch. 45 - Jaguars are a keystone species in the Amazon....Ch. 45 - Describe Pavlov’s dog experiments as an example of...Ch. 45 - Describe the advantage of using an aural or...
Additional Science Textbook Solutions
Find more solutions based on key concepts
True or false? Some trails are considered vestigial because they existed long ago.
Biological Science (6th Edition)
4. How do gross anatomy and microscopic anatomy differ?
Human Anatomy & Physiology (2nd Edition)
1. ___ Mitosis 2. ___ Meiosis 3. __ Homologous chromosomes 4. __ Crossing over 5. __ Cytokinesis A. Cytoplasmic...
Microbiology with Diseases by Body System (5th Edition)
In pea plants, plant height, seed shape, and seed color are governed by three independently assorting genes. Th...
Genetic Analysis: An Integrated Approach (3rd Edition)
4. Three groups of nonvascular plants are _______, ______, and _______. Three groups of seedless vascular plant...
Biology: Life on Earth (11th Edition)
Distinguish between microevolution, speciation, and macroevolution.
Campbell Essential Biology (7th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following is best at showing the life expectancy of an individual within a population? a. quadrat b. mark and recapture c. survivorship curve d. life tablearrow_forwardCan you please help elaborate this problem and help find the right answer?arrow_forwardWhat is the estimated CARRYING CAPACITY of the population represented in the graph? * 600 ...... 500 роp 400 size 300 200 B. 100 TIME 385 О 290 575 О з30arrow_forward
- Look at the graph below. Grasshopper Population in Grassland < Green Grasshoppers- Brown Grasshoppers 80 60 40 20 Generation 1 Generation 2 Generation 3 Generation 4 Generation 5 Explain what is happening in the graph prior to generation 3. Edit View Insert Format Tools Table 12pt v Paragraph BIU Av ev T?varrow_forwardDifferentiate transect and quadrat sampling. What are strengths and weaknesses of using such methods in doing terrestrial community ecologyarrow_forwardLook at the graph below. Grasshopper Population in Grassland - Green Grasshoppers - Brown Grasshoppers 80 60 40 20 Generation 1 Generation 2 Generation 3 Generation 4 Generation 5 After generation 3, explain a possible reason there is a change in the graph. Predict what change has occurred. Edit View Insert Format Tools Table 12pt v Paragraph v BIUarrow_forward
- Species: fox squirrel Question: What sampling method would you use to estimate N and why?arrow_forwardWhich letter on the graph represents the EXCEEDING phase of the graph? * 600 500 роp 400 size 300 200 B. 100 TIME A D B.arrow_forwardA population's. is the specific environment in which it lives. Select an answer and submit. For keyboard navigation, use the up/down arow keys to select an answer. geographical range b growth rate size habitat dynamics Unanswered • 2 attempts left 1 Submit Question 2 Homework • Unanswered Why do species with large body sizes typically have lower population densities? Select an answer and submit. For keyboard navigation, use the up/down arow keys to select an answer. Small organisms have more potential mates. b Genetic diversity is low. There are not enough individuals to grow the population. d. Large organisms do not like living near one another. Each large organism consumes more available resources. Unanswered • 2 attempts left Submitarrow_forward
- High diversity is equated with communitylecosystem stability because: It helps buffer environmental stresses on a community/ecosystem It provides a variety of nutrient source It sustains complex ecological interactions None is correctarrow_forwardWhich of the following measures the relative abundance of species in a community? Species Evenness Species Diversity Species Distribution Species Richnessarrow_forwardFor each organism, create a survivorship curve by plotting the given information in a line graph. Title each graph "Survivorship Curve for [name of organism]." The y-axis should be labeled "Survivorship" and contain low, medium, and high indicators. The x-axis should be labeled "Life Span" and contain young, middle-aged, and old indicators. Andean condors reproduce slowly. Females lay one or two eggs every other year. The offspring that hatch are well-protected and cared for, and many reach sexual maturity at five to six years. Although their numbers are being threatened by human impacts, they are naturally long-lived, surviving for seventy to seventy-five years.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
From Sea to Changing Sea | Early Life in the Oceans || Radcliffe Institute; Author: Harvard University;https://www.youtube.com/watch?v=Ac0TmDf5Feo;License: Standard youtube license