and Their Relationships (continued)
Create a tolerance graph similar to the Tolerance of Steelhead Trout
figure in your book. Title your graph Tolerance of Plant A. Label the
zones. Then label the limits of each zone according to the facts about
Plant A listed below.
. can live at an elevation • cannot live above 6,000 m
between 1,000 and 2,000 m . grows best between 2,000
• can live at an elevation
and 5,000 m
between 5,000 and 6,000 m. cannot live below 1,000 m
Tolerance of plant A
A

Respuesta :

The tolerance range are the range of a limiting factor between which a species can survive. The tolerance graph represents the altitude ranges in which plant A expresses the highest and lowest growth rates.  

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We need to create a tolerance graph for plant A. But before, we will riview some framework about tolerance range.

The tolerance range can be defined as the range of environmental conditions between which an organism or a species is potentially capable of surviving.  

When talking about environmental conditions, we are referring to abiotic factors, such as temperature, pH, latitude, altitude, salinity, humidity, radiation, etcetera. These are the limiting factors.

Limiting factors are environmental, abiotic conditions that act directly on populations and individuals, limiting their distribution and growth. These factors affect natality and mortality rate, migration, etcetera.

The tolerance range depends on the species and the individual development stage.

  • Different species express different tolerance range for the same limiting factor.
  • An individual can change its tolerance range with time.  

Nowing this, we can create the tolerance graph for Plant A.

  • Title: Tolerance of Plant A
  • Left axis  ⇒  Number of individuals
  • Inferior axis  ⇒ Tolerance  ⇒  inferior and superior limits.
  • Superior axis  ⇒ Limiting factor ⇒  0 - 1000 m

                                                                  1000-2000 m

                                                                   2000-5000 m

                                                                   5000-6000 m

                                                                   more than 6000 m

The curve will express

  • the highest number of individuals between the 2000-5000 range.
  • infrequent or low number of individuals between 1000-2000 and 5000-6000 ranges.
  • no individuals at all between 0-1000 and more than 6000 m.      

In the attached files you will find the graph.

These graphs represent the tolerance ranges of species for different limiting factors that affect their growth and distribution.

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