[ Select ] The realized niche of Cthamalus is [ Select ]

Biology Today and Tomorrow without Physiology (MindTap Course List)
5th Edition
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Author:Cecie Starr, Christine Evers, Lisa Starr
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Chapter18: The Biosphere And Human Effects
Section: Chapter Questions
Problem 4CT
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Fundamental niche: the combination of resources or areas used or conditions tolerated without competitors
Realized niche: portion of resources or areas used or conditions tolerated with competitors
Experimental setup:
Semibalanus cannot withstand the
1. Transplant rocks
containing young
intertidal Chthamalus to
lower intertidal zone.
Upper
drying that occurs in the upper
zone
zone.
2. Let Semibalanus
Lower intertidal zone
colonize the rocks.
Chthamalus in
upper intertidal zone
3. Remove
Semibalanus from
half of each rock.
Monitor survival
of Chthamalus on
both sides.
Mean tide level
Chthamalus
Chthamalus
+ Semibalanus
Semibalanus in lower-
intertidal zone
Results:
80-
60-
What are the fundamental
niches and realized niches of
40-
both Chthamalus and Semibalanus:
20-
entire zone, upper zone or
lower zone?
0-
Competitor
absent
Competitor
present
The fundamental niche of Cthamalus is
[ Select ]
The realized niche of Cthamalus is
[ Select ]
The fundamental niche of Semibalanus is
[ Select ]
The realized niche of Semibalanus is
[ Select ]
Percent survival
Transcribed Image Text:Fundamental niche: the combination of resources or areas used or conditions tolerated without competitors Realized niche: portion of resources or areas used or conditions tolerated with competitors Experimental setup: Semibalanus cannot withstand the 1. Transplant rocks containing young intertidal Chthamalus to lower intertidal zone. Upper drying that occurs in the upper zone zone. 2. Let Semibalanus Lower intertidal zone colonize the rocks. Chthamalus in upper intertidal zone 3. Remove Semibalanus from half of each rock. Monitor survival of Chthamalus on both sides. Mean tide level Chthamalus Chthamalus + Semibalanus Semibalanus in lower- intertidal zone Results: 80- 60- What are the fundamental niches and realized niches of 40- both Chthamalus and Semibalanus: 20- entire zone, upper zone or lower zone? 0- Competitor absent Competitor present The fundamental niche of Cthamalus is [ Select ] The realized niche of Cthamalus is [ Select ] The fundamental niche of Semibalanus is [ Select ] The realized niche of Semibalanus is [ Select ] Percent survival
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