Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 19, Problem 2SQ
Summary Introduction
To determine: The survivorship curve in following conditions – large number offspring with minimal parental care and few number of offspring with long-standing care.
Concept introduction: Survivorship curve is the graphical representation showing that the number of individual in a particular population of a species surviving at each age of the utmost life span.
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True or False?
a) In Lotka-Volterra competition models, coexistence CANNOT occur if interspecific competition is stronger than intraspecific competition.
b)There are three types of survivorship curves that describe mortality rates at different age classes. A type I survivorship curve describes a population with low juvenile mortality, while a type III survivorship curve describes a population with high juvenile mortality.
A trade-off for having many offspring would be
that they would require a large amount of parental care.
that they would likely be small in size.
that they would have high survivorship.
that they would likely be large in size.
In this figure, which survivorship curve best describes a species likely to exhibit high juvenile mortality and weak parental care?
Three general types of survivorship curves
Туре !
1000
100
Турe II
10
1
Type III
Old
0.1
Young
Age
O Type II
O Type III
O Type I
Number of survivors (Nx)
Chapter 19 Solutions
Campbell Essential Biology with Physiology (6th Edition)
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- A coyote population in Colorado has 40 individuals, the potential reproductive rate per individual per year is 1.5, and the carrying capacity of the area is 50 coyotes. In the same habitat, the bobcat population has 30 individuals, the potential reproductive rate per individual per year is 2, and the carrying capacity of the area is 100 bobcats. The bobcats depress population growth of coyotes through competition by 0.20, while the coyotes depress population growth of bobcats through competition by 1.1. What will the population size be for coyotes next year? *Note that this is the other half of the bobcat question, and you need to round your answer to a whole animal. 40 5 45 16 55arrow_forwardTo create a survivorship curve for the Andean condor: Graph Title: Survivorship Curve for Andean Condor Y-axis: Labeled "Survivorship" with indicators for "Low," "Medium," and "High" levels, ranging from 0 to 100% of the total initial cohort size. X-axis: Labeled "Life Span" with stages "Young" (0-5 years), "Middle-aged" (6-37 years), and "Old" (38-75 years). Key Features of the Curve: Begins high, reflecting near-total survival from birth to maturity due to low mortality and protected upbringing. remains flat and high through the middle age, indicating sustained low mortality. shows a steep decline in old age, representing increased mortality as individuals reach the latter part of their lifespan.arrow_forwardWhat is predation? explain and provide example.arrow_forward
- In 2010, 150 coyotes (Canis latrans) were counted in Pierce County, WA. And the growth rate is 14 coyortes per year. Following a survey of the community, the social carrying capacity of coyotes was around 500 individuals. How long will it take for the coyote population to reach this human tolerance goal? Biologists have estimated the biological carrying capacity for coyotes in the county to be 1000 individuals. How long will it be before the population reaches carrying capacity using exponential growth? Would it take more or less time for the population to reach carrying capacity if using logistic growth equation and assumptions?arrow_forwardA population of 1,492 finches is introduced to a rainforest. Over the next year, the finches show a death rate of 0.395 while the population drops to 1,134. What's the birth rate for this population? Is this proving to be a suitable habitat? (Two answers) a) Yes, this is a suitable habitat. The birth rate is higher than the death rate. b) No, this is not a suitable habitat. The birth rate is much lower than the death rate. c) 589 d) -358 e) 0.155 f) 0.845arrow_forwardA population of 1,492 finches is introduced to a rainforest. Over the next year, the finches show a death rate of 0.395 while the population drops to 1,134. What's the birth rate for this population? Is this proving to be a suitable habitat? (Two answers) * Yes, this is a suitable habitat. The birth rate is higher than the death rate. No, this is not a suitable habitat. The birth rate is much lower then the death rate. 589 -358 0.155 0.845 Which of the following is true of a population approaching its carrying capacity? The population's rate of increase approaches zero. ロロロ□arrow_forward
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