A researcher was interested in models and mechanisms of succession in the rocky intertidal where disturbance is frequent. They observed that in newly bare rock space created by disturbance that two species of barnacles arrived first, followed by macroalgae. Limpets are an important herbivore of macroalgae. They were interested in how species interactions would affect succession. They conducted a series of experiments removing barnacles and/or limpets and examined algal abundance to be able to fill in the attached interaction diagram. See attached imageSee second attached image for question In a second experiment, they wanted to test two hypotheses about themechanism of succession: Hypothesis (1) barnacles changed the physicalenvironment of the rocks that directly affected macroalgal settlement or survivalor Hypothesis (2) barnacles indirectly affected interactions of algae with otherspecies. If (1) were supported, removing barnacles would have the same effectregardless of the presence of the other species. If (2) were supported, the effectof removing barnacles would depend on the presence or absence of the otherspecies. They cleared 8cm x 8cm plots of all algae with the following treatments:barnacles and limpets present (+L +B), barnacles present and limpets removed (-L+B), barnacles removed with limpets present (+L-B), and both barnacles andlimpets removed (-L -B). Their results are in the attached figure. Which hypothesiswas supported by the data?A.ALGAL DENSITY(inds./10 cm²)MMODELS AND MECHANISMS VI'MS 'N' J-L+B1-L-B+L+B'MМ' J1985NSS N1984O A. Hypothesis 1: direct effect via physical changesO B. Hypothesis 2: indirect effect via other species interactionsJ'MM1986-L+B+L+B|-L-B**-L+B+L+B-L-B+L-B Barnacleiii.Limpetiv.Algaeii.

The experiment aimed to scrutinize two hypotheses concerning the succession mechanism. Hypothesis 1…

Answered: A researcher was interested in models…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

See similar textbooks

Related questions

Concept explainers

Question

A researcher was interested in models and mechanisms of succession in the rocky intertidal where disturbance is frequent. They observed that in newly bare rock space created by disturbance that two species of barnacles arrived first, followed by macroalgae. Limpets are an important herbivore of macroalgae. They were interested in how species interactions would affect succession. They conducted a series of experiments removing barnacles and/or limpets and examined algal abundance to be able to fill in the attached interaction diagram. See attached image

See second attached image for question

In a second experiment, they wanted to test two hypotheses about the
mechanism of succession: Hypothesis (1) barnacles changed the physical
environment of the rocks that directly affected macroalgal settlement or survival
or Hypothesis (2) barnacles indirectly affected interactions of algae with other
species. If (1) were supported, removing barnacles would have the same effect
regardless of the presence of the other species. If (2) were supported, the effect
of removing barnacles would depend on the presence or absence of the other
species. They cleared 8cm x 8cm plots of all algae with the following treatments:
barnacles and limpets present (+L +B), barnacles present and limpets removed (-L
+B), barnacles removed with limpets present (+L-B), and both barnacles and
limpets removed (-L -B). Their results are in the attached figure. Which hypothesis
was supported by the data?
A.
ALGAL DENSITY
(inds./10 cm²)
M
MODELS AND MECHANISMS VI
'M
S 'N' J
-L+B
1-L-B
+L+B
'M
М' J
1985
NS
S N
1984
O A. Hypothesis 1: direct effect via physical changes
O B. Hypothesis 2: indirect effect via other species interactions
J
'M
M
1986
-L+B
+L+B
|-L-B
**
-L+B
+L+B
-L-B
+L-B

Expert Solution

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

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