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Questions and Answers
What is the effect of abiotic factors on ecosystems?
What are ecotones known for?
How does having multiple food sources protect a predator species?
What does an ecological niche encompass?
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What is a consequence of species occupying different niches in an ecosystem?
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What disturbance in the ecosystem occurs when a new species enters?
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What characterizes exotic species in an ecosystem?
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How did the opossum establish its niche in North America?
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What is one of the main causes of species depletion and extinction?
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Why are indigenous populations often weaker than introduced exotic species?
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What happened to the bluebird population in North America due to starlings?
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How many introduced species are reported in Canada?
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What event led to the introduction of starlings in North America?
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Which biome is characterized by coniferous trees and is found primarily in Canada?
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What is the primary factor determining ecosystem diversity in terrestrial environments?
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In aquatic environments, which zone is characterized by sufficient light for photosynthesis?
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What role do abiotic factors play in the growth of producers?
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Which type of competition occurs between members of the same species?
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What is the primary role of predators in an ecosystem?
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Which organisms are affected by parasitism?
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What sampling method uses a rectangular area to count organisms?
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Which of the following aquatic zones has the least light available for photosynthesis?
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What is the dominant species found in the grassland biome?
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Which of the following biomes has the least diversity?
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What shape is characteristic of conifer trees in the taiga biome?
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Which biomes primarily dominate the Canadian landscape?
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What factor is primarily related to ecosystem diversity as one approaches the equator?
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Study Notes
Life on Earth
- Not evenly distributed
- Abiotic factors dictate productivity of an ecosystem
- Organism tolerance of abiotic changes is limited
Ecotones
- Transition area between ecosystems
- Increased biodiversity compared to individual ecosystems
- Enhanced stability from multiple food sources
Ecological Niches
- Each organism has a unique role in an ecosystem
- Includes: place in the food web, habitat, breeding area, and activity time
- Reduces competition and promotes ecosystem stability
Exotic Species
- Disrupt ecosystem balance through competition
- Can be introduced naturally or through human intervention
- Often lead to species depletion or extinction
Biomes
- Large geographical areas with specific temperature and precipitation ranges
- Adaptations and dominant species are characteristic of each biome
Biome Diversity
- Terrestrial ecosystems: precipitation and temperature are key factors
- Aquatic ecosystems: available light plays a significant role
Taiga Biome
- Also known as Boreal forest biome
- Dominant species: Conifers
- Adapted to cold winters and warm summers
- Contains diverse ecosystems with unique species
Aquatic Ecosystem Diversity
- Upper layer: High light for photosynthesis
- Deeper layer: Cooler with reduced light
- Diversity decreases with depth
Growth-Limiting Factors
- Abiotic: Soil type, moisture, humidity, temperature, etc.
- Biotic: Competition, predation, parasitism
Competition
- Intraspecific: Members of the same population compete for resources
- Interspecific: Different species compete for resources
Predation
- Predator consumes prey
- Affects multiple food chain relationships
Parasitism
- Parasite benefits at the expense of the host
- Can impact host population density and survival rates
Population Sampling
- Estimates population size using samples
- Transects and quadrats are common sampling techniques
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Description
Explore the intricate relationships within ecosystems and biomes, focusing on factors that influence productivity, biodiversity, and stability. This quiz covers topics such as ecological niches, ecotones, and the impact of exotic species on environment balance.