Explain why there are differences in the efficiency of energy transfer between trophic levels.Explain what happens to the energy which is not transferred to the next trophic level in a food chain when one organism feeds on another. Table 3.5 The number of organisms, biomass and energyin each trophic level of Silver Springs, FloridaTrophic level Number oforganismsBiomassEnergy(kJ m-2 year-!)(g m-2)Tertiaryconsumers T40.011.56724 x 10Secondaryconsumers T311.0160241 x 10414 x 103Primaryconsumers T237.0Primary27 x 1010809.087 x 103producers T,Based on Odum (1957). T4 = 1T3 = 2512.5T2 = 600300300T1 = 10,00050005000Figure 3.7 How to draw an ecological pyramid. The value for each trophic level should be divided by two and this valueis the width of the bar on either side of the centre line. The top bar (T4) is often so narrow that it has to be drawn as singleline. Not drawn to scale.

An ecosystem is an area of interaction among plants, animals, decomposers, as well as natural…

Explain why there are differences in the efficiency of energy transfer between trophic levels. Explain what happens to the energy which is not transferred to the next trophic level in a food chain when one organism feeds on another.

Explain why there are differences in the efficiency of energy transfer between trophic levels. Explain what happens to the energy which is not transferred to the next trophic level in a food chain when one organism feeds on another.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter46: Ecosystems

Section: Chapter Questions

Problem 13RQ: Which term describes the process whereby toxic substances increase along trophic levels of an...

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Question

Explain why there are differences in the efficiency of energy transfer between trophic levels.
Explain what happens to the energy which is not transferred to the next trophic level in a food chain when one organism feeds on another.

Table 3.5 The number of organisms, biomass and energy
in each trophic level of Silver Springs, Florida
Trophic level Number of
organisms
Biomass
Energy
(kJ m-2 year-!)
(g m-2)
Tertiary
consumers T4
0.01
1.5
67
24 x 10
Secondary
consumers T3
11.0
1602
41 x 104
14 x 103
Primary
consumers T2
37.0
Primary
27 x 1010
809.0
87 x 103
producers T,
Based on Odum (1957).

T4 = 1
T3 = 25
12.5
T2 = 600
300
300
T1 = 10,000
5000
5000
Figure 3.7 How to draw an ecological pyramid. The value for each trophic level should be divided by two and this value
is the width of the bar on either side of the centre line. The top bar (T4) is often so narrow that it has to be drawn as single
line. Not drawn to scale.

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