Biological Science, Books a la Carte Plus Mastering Biology with Pearson eText -- Access Card Package (6th Edition)
6th Edition
ISBN: 9780134296029
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 54, Problem 12PIAT
Summary Introduction
To review:
The results of the graph showing the percentage of berries with borers before and after the installation of nets to prevent the intervention of birds.
Introduction:
Borers are beetles or pests that affect the production of coffee berries. They destroy a significant portion of berries crop.
The graph below shows the results of an experiment that was conducted to determine the role of the predatory birds in protecting the coffee plants from the beetles. For this experiment, 12 plots were selected as control where the birds were free to feed on the beetles. The treatment plot was covered with a net to prevent the invasion of the predatory birds. The given study is an attempt to understand whether birds have any role in reducing the number of borers or not.
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what is k and r for each condition?Â
K (carrying capacity): can be estimated by finding the point where the growth curve levels off. Take the average of this data point and all data collected beyond this point to estimate k (note: if the bacteria population is still growing, you can just take the last value of data for k.Â
r: choose any two points at the log phase of growth. Then use the r formula.Â
Just choose two waste conditions for r and k calculation so I can get the idea of how to do this, thanks.
5a. On the following figure to the right, correctly
label the name of the population growth pattern
that the red line and the blue line demonstrates.
5b. Match the following growth equations to the
growth curve by drawing a line between the
equation and the curve or placing the name of the
growth pattern next to the equation.
dN
(K-N)
rN
--
dt
K
dN
= rN
dT
%|
Time (t) →
5b. What does K in this figure represent? How and why do population growth rates change as the
population nears K?
Population size (N)
Corn undergoes C4 photosynthesis and does not fix nitrogen, whereas Alfalfa is a nitrogen-fixing plant that utilizes C3 photosynthesis. Both species are equally watered. What can you interpret from this dN/dt vs. N plot given the biculture and monoculture treatments for each species (alfalfa & corn)?
Biculture: Both corn & alfalfa grown together in the same pot
Monoculture: Corn & alfalfa grown in separate pots
Chapter 54 Solutions
Biological Science, Books a la Carte Plus Mastering Biology with Pearson eText -- Access Card Package (6th Edition)
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