Podcast
Questions and Answers
What does species richness indicate about an ecosystem?
What does species richness indicate about an ecosystem?
- A high number of similar species
- A dominance of one particular species
- A wide variety of interdependent species (correct)
- An overall decline in population numbers
What does a high Simpson reciprocal index value suggest about an ecosystem?
What does a high Simpson reciprocal index value suggest about an ecosystem?
- Increased population density of a single species
- The ecosystem is highly vulnerable to extinction
- Complexity in terms of species richness and evenness (correct)
- Low interdependence among species
How does evenness relate to species diversity in an ecosystem?
How does evenness relate to species diversity in an ecosystem?
- It indicates the total number of species present
- It signifies a complete absence of dominant species
- It assumes all species have the same population size
- It reflects a balance among different species populations (correct)
Why is it essential to use numerical values of species diversity in conservation efforts?
Why is it essential to use numerical values of species diversity in conservation efforts?
What role does isolation play in the process of speciation?
What role does isolation play in the process of speciation?
What is the main result of natural selection?
What is the main result of natural selection?
What does speciation primarily involve?
What does speciation primarily involve?
What evidence indicates that two varieties are separate species?
What evidence indicates that two varieties are separate species?
Which of the following describes an endemic species?
Which of the following describes an endemic species?
How does artificial selection differ from natural selection?
How does artificial selection differ from natural selection?
What is usually a result of mutation within a species?
What is usually a result of mutation within a species?
Which of the following is a goal of artificial selection in agriculture?
Which of the following is a goal of artificial selection in agriculture?
What is a key factor that leads to the passing on of beneficial traits in a population?
What is a key factor that leads to the passing on of beneficial traits in a population?
What defines a biological hotspot?
What defines a biological hotspot?
Which of the following criteria is NOT used to identify Key Biodiversity Areas (KBAs)?
Which of the following criteria is NOT used to identify Key Biodiversity Areas (KBAs)?
What is a significant challenge faced by indigenous people living in rural areas regarding environmental issues?
What is a significant challenge faced by indigenous people living in rural areas regarding environmental issues?
Which evidence indicates that we are currently in the Anthropocene epoch?
Which evidence indicates that we are currently in the Anthropocene epoch?
What does the theory of evolution state?
What does the theory of evolution state?
What is the significance of LUCA in evolutionary biology?
What is the significance of LUCA in evolutionary biology?
Which two factors are generally required for evolution to occur?
Which two factors are generally required for evolution to occur?
How long is an era in geological terms?
How long is an era in geological terms?
What is one of the main ethical reasons for environmental conservation?
What is one of the main ethical reasons for environmental conservation?
Which organization is characterized by a fast response but cannot enforce binding agreements?
Which organization is characterized by a fast response but cannot enforce binding agreements?
Which funding source primarily supports IGOs?
Which funding source primarily supports IGOs?
What aspect of NGO operations can lead to a confrontational public image?
What aspect of NGO operations can lead to a confrontational public image?
What is a key aesthetic reason for promoting biodiversity?
What is a key aesthetic reason for promoting biodiversity?
Which characteristic distinguishes IGOs from NGOs regarding legislation?
Which characteristic distinguishes IGOs from NGOs regarding legislation?
Which of the following best illustrates the social importance of biodiversity?
Which of the following best illustrates the social importance of biodiversity?
What is a common misconception about the speed of response of IGOs?
What is a common misconception about the speed of response of IGOs?
What is a major impact of the lionfish on marine ecosystems?
What is a major impact of the lionfish on marine ecosystems?
Which of the following is an effective solution to control lionfish populations?
Which of the following is an effective solution to control lionfish populations?
How did the grey squirrel impact native ecosystems in England?
How did the grey squirrel impact native ecosystems in England?
What economic strategy was mentioned to encourage lionfish hunting?
What economic strategy was mentioned to encourage lionfish hunting?
Which of the following correctly describes a biodiversity hotspot?
Which of the following correctly describes a biodiversity hotspot?
What trend was observed regarding animal populations between 1970 and 2018?
What trend was observed regarding animal populations between 1970 and 2018?
What is an ineffective method of managing invasive species mentioned?
What is an ineffective method of managing invasive species mentioned?
Why is encouraging public participation in combating invasive species considered effective?
Why is encouraging public participation in combating invasive species considered effective?
What is the primary focus of Ex Situ conservation methods?
What is the primary focus of Ex Situ conservation methods?
Which of the following best describes the function of CITES?
Which of the following best describes the function of CITES?
What is an example of a strategy used in In Situ conservation?
What is an example of a strategy used in In Situ conservation?
What is one key requirement for zoos participating in Ex Situ conservation?
What is one key requirement for zoos participating in Ex Situ conservation?
Which type of conservation indirectly conserves entire habitats and ecosystems?
Which type of conservation indirectly conserves entire habitats and ecosystems?
Flashcards
Alien Invasive Species
Alien Invasive Species
A species that is not native to an area and causes harm to the environment.
Endemic Species
Endemic Species
A species that is found only in a specific geographic area.
Biodiversity Hotspot
Biodiversity Hotspot
Areas with a high concentration of endemic species and a high threat of extinction.
Lionfish Impact on Coral Reefs
Lionfish Impact on Coral Reefs
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Grey Squirrels Impact on Native Ecosystems
Grey Squirrels Impact on Native Ecosystems
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Habitat Destruction Threat to Biodiversity
Habitat Destruction Threat to Biodiversity
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Financial Incentives for Invasive Species Control
Financial Incentives for Invasive Species Control
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Marketing Invasive Species as Food
Marketing Invasive Species as Food
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Natural Selection
Natural Selection
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Speciation
Speciation
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Reproductive Isolation
Reproductive Isolation
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Endemism
Endemism
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Artificial Selection
Artificial Selection
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Mutation
Mutation
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Variation
Variation
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Selective Breeding
Selective Breeding
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Key Biodiversity Areas (KBAs)
Key Biodiversity Areas (KBAs)
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Biological Hotspots
Biological Hotspots
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Theory of Evolution
Theory of Evolution
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Last Universal Common Ancestor (LUCA)
Last Universal Common Ancestor (LUCA)
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Anthropocene
Anthropocene
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Evolution Requirements
Evolution Requirements
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Biological Processes
Biological Processes
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Ex Situ Conservation
Ex Situ Conservation
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In Situ Conservation
In Situ Conservation
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CITES
CITES
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Flagship Species
Flagship Species
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Mixed Conservation
Mixed Conservation
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Ethical Value of Biodiversity
Ethical Value of Biodiversity
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Aesthetic Value of Biodiversity
Aesthetic Value of Biodiversity
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Ecological Value of Biodiversity
Ecological Value of Biodiversity
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Social Value of Biodiversity
Social Value of Biodiversity
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Economic Value of Biodiversity
Economic Value of Biodiversity
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IGO's Role in Biodiversity Conservation
IGO's Role in Biodiversity Conservation
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NGO's Role in Biodiversity Conservation
NGO's Role in Biodiversity Conservation
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Conservation Strategies for Biodiversity
Conservation Strategies for Biodiversity
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What is the difference between species richness and evenness?
What is the difference between species richness and evenness?
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What does the Simpson reciprocal index tell us about an ecosystem?
What does the Simpson reciprocal index tell us about an ecosystem?
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How can we measure the impact of human activities on biodiversity?
How can we measure the impact of human activities on biodiversity?
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What is natural selection and how does it lead to the diversity of species?
What is natural selection and how does it lead to the diversity of species?
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How does isolation lead to the creation of new species?
How does isolation lead to the creation of new species?
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Study Notes
Biodiversity
- Biodiversity is the biotic and abiotic diversity per unit area
- Biotic factors are living factors, such as animals and plants.
- Abiotic factors are non-living factors, such as rocks and caves.
Habitat Diversity
- Habitat diversity is the variety of places where organisms live.
- Some organisms live in abiotic environments (like caves) and others in biotic environments (like plants).
Species Diversity
- Species diversity is the variety of different species in an ecosystem.
- It is one component of biodiversity.
Genetic Diversity
- Genetic diversity is the variety of genes within a species.
- For example, humans all have eyes, but the variety in their genes leads to varied eye color.
- Humans have about 39,000 genes, and plants have hundreds to thousands.
Species Diversity Components
- Richness and evenness are components of species diversity.
- High evenness indicates a complex ecosystem with lots of different niches, supporting many species.
- Low evenness indicates a community dominated by one or a few species.
Simpson's Index
- Simpson's index measures biodiversity.
- Higher values of Simpson's index indicate a more diverse ecosystem.
- A high index means a complex ecosystem that is stable, whereas a low index suggests an ecosystem that could be at risk of collapse.
Biodiversity and Human Impacts
- Human activities can negatively impact biodiversity by altering ecosystems and thus altering the index.
- Increasing complexity leads to more richness and evenness.
- Human action can lead to an increase in the Simpson's Index if complexity increases, vice versa.
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