DP Biology Questionbank
C.4 Conservation of biodiversity
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Description
Nature of science:
Scientists collaborate with other agencies—the preservation of species involves international cooperation through intergovernmental and non-governmental organizations. (4.3)Understandings:
- An indicator species is an organism used to assess a specific environmental condition.
- Relative numbers of indicator species can be used to calculate the value of a biotic index.
- In situ conservation may require active management of nature reserves or national parks.
- Ex situ conservation is the preservation of species outside their natural habitats.
- Biogeographic factors affect species diversity.
- Richness and evenness are components of biodiversity.
Applications and skills:
- Application: Case study of the captive breeding and reintroduction of an endangered animal species.
- Application: Analysis of the impact of biogeographic factors on diversity limited to island size and edge effects.
- Skill: Analysis of the biodiversity of two local communities using Simpson’s reciprocal index of diversity.
Guidance:
- The formula for Simpson’s reciprocal index of diversity is:
D = diversity index, N = total number of organisms of all species found and n = number of individuals of a particular species.
Aims:
- Aim 8: Scientists supported by governments are devoting relatively large amounts of effort to save particular animal species. Can criteria be established to justify a hierarchy of value of one species over another?
Directly related questions
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16N.3.SL.TZ0.13b:
A calculation of Simpson’s reciprocal index was undertaken on each field with the following results.
Evaluate these results.
- 16N.3.SL.TZ0.14a: Outline the trend in the number of people with malaria during the period when the use of...
- 16N.3.SL.TZ0.13a: Compare and contrast the richness and the evenness of the two fields.
- 16N.3.HL.TZ0.16b: Outline how the edge effect can affect diversity in forests.
- 16N.3.HL.TZ0.16c: The number of plants in two fields of approximately the same size was counted. Compare and...
- 17M.3.SL.TZ1.16c: Discuss the advantages and disadvantages of in situ conservation methods.
- 17M.3.SL.TZ1.16b: Site A has a higher Simpson’s reciprocal index than Site B showing that its diversity is...
- 17M.3.SL.TZ2.18: Explain the use of indicator species to assess the condition of the environment.
- 17M.3.HL.TZ1.14b: Define indicator species.
- 17M.3.HL.TZ1.15c: State the two components needed to calculate the biodiversity of an area.
- 17M.3.SL.TZ1.16a: Calculate the diversity of site C. Working should be shown.
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17M.3.HL.TZ1.14c:
Indicator species may be affected by biomagnification. Discuss biomagnification using a named example of a pollutant.
- 17M.3.HL.TZ1.15b: Discuss two advantages of ex situ conservation measures.
- 17M.3.HL.TZ2.15c: When coral is bleached, certain organisms become more common in the ecosystem such as the...
- 20N.3.SL.TZ0.14a.ii: Two components of biodiversity are richness and evenness. Deduce which of the two pools was...
- 20N.3.SL.TZ0.14a.i: Two components of biodiversity are richness and evenness. Deduce which of the two pools was...
- 20N.3.SL.TZ0.14b: Calculation of Simpson’s reciprocal diversity index for both rockpools gives the following...
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20N.3.SL.TZ0.14c:
The graph shows how the number of ant species found on isolated islands near New Guinea depends on the size of the island.
[Source: University of Windsor, The Theory of Island Biogeography. Available at:
http://web2.uwindsor.ca/courses/biology/macisaac/55-437/lecture9.htm.]Explain the relationship between island size and number of ant species.
- 17N.3.SL.TZ0.14c: Outline how deforestation can affect the richness of biodiversity in an ecosystem.
- 17N.3.SL.TZ0.14b: State one reason mammals can continue to survive even if they are extinct in the wild.
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17N.3.SL.TZ0.14d:
Explain the impact of plastic waste on Laysan albatrosses (Phoebastria immutabilis).
- 17N.3.SL.TZ0.14a: Calculate how many species are classified as endangered due to hunting and trapping.
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17N.3.HL.TZ0.14b.i:
State the role of an indicator species.
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17N.3.HL.TZ0.14b.ii:
Identify possible approaches to maintain the population of P. sandwichensis.
- 18N.3.HL.TZ0.15c: Outline how organisms in Group V could be used to measure pollution in an environment.
- 18N.3.SL.TZ0.13c: Distinguish between richness and evenness as components of biodiversity.
- 18N.3.HL.TZ0.15a: Identify the group that is most intolerant to pollution.
- 18N.3.HL.TZ0.15b.i: Deduce the meaning of ni in this formula.
- 18N.3.HL.TZ0.15b.ii: Deduce the meaning of ai in this formula.
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18N.3.SL.TZ0.13a:
State which species could be found in mildly polluted water.
- 18N.3.SL.TZ0.13b: State the name given to organisms whose presence or absence reflects an environmental condition.
- 18N.3.SL.TZ0.13d: Explain how edge effects can influence biodiversity in a region.
- 18M.3.SL.TZ2.12a: Determine how far from the forest edge an increase in disturbance-adapted beetles would be detected.
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18M.3.SL.TZ1.12a:
Outline what is meant by the edge effect.
- 18M.3.SL.TZ1.12b: Analyse the differences in biodiversity seen in the three sites.
- 18M.3.SL.TZ2.12b: With respect to the example of disturbance-adapted beetles, explain what is meant by an indicator...
- 18M.3.SL.TZ2.12c: Outline how reserve size and shape can impact edge effects.
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18M.3.HL.TZ1.17b:
Explain biogeographic factors that increase the effectiveness of nature reserves.
- 19M.3.SL.TZ1.11a: From the data, identify the depth along the transect where the greatest species richness is...
- 19M.3.SL.TZ1.12: Outline one example of an active management strategy employed in the context of in situ...
- 19M.3.SL.TZ1.11b: Outline the relationship between Zooxanthellae and reef-building coral reef species.
- 19M.3.HL.TZ1.16b: Distinguish between ex situ and in situ conservation of endangered species.
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19M.3.SL.TZ2.12e:
Barnacles are sensitive to pollution. Outline how it might be possible to use these organisms as indicator species.
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19M.3.SL.TZ2.12b:
Describe the distribution of C. montagui and S. balanoides barnacles in Butter Lump Bay.
- 19M.3.SL.TZ2.14b: Explain the likely effects on biodiversity if a forest becomes fragmented.
- 19M.3.SL.TZ2.12d: State one abiotic factor that could have determined the distribution of barnacles.
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19M.3.SL.TZ2.12c:
E. modestus is an invasive barnacle while the others are native species. Analyse the data to show how it supports this statement.
- 19M.3.SL.TZ2.14a: State two abiotic factors that are increased in the fragmented forest with respect to the centre...
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19M.3.SL.TZ2.12a:
Outline how the data could have been obtained.
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19M.3.HL.TZ2.17:
Outline a named example of the captive breeding and reintroduction of an endangered animal species.
- 19N.3.HL.TZ0.16a: State one advantage of this in situ conservation method.
- 19N.3.HL.TZ0.16c: State what a high value of Simpson’s reciprocal index of diversity suggests about an ecosystem.
- 19N.3.SL.TZ0.15a: State the impact of environmental disturbance on biodiversity.
- 19N.3.HL.TZ0.15c: Describe the use of indicator species in monitoring environmental change.