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Species interactions, ecological niches, and community structure
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Community: All populations of different species in an area
Both species harmed
Intraspecific: Within same species Interspecific: Between different species
Competitive exclusion principle:
Resource partitioning:
Predator benefits, prey harmed
Predator adaptations:
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| Section | Format | Questions | Time | Weight | Calculator |
|---|---|---|---|---|---|
| Multiple Choice | MCQ | 60 | 90 min | 50% | ๐ซ |
| Free Response (Long) | FRQ | 2 | 50 min | 30% | ๐ซ |
| Free Response (Short) | FRQ | 4 | 40 min | 20% | ๐ซ |
Avoid these 3 frequent errors
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Prey defenses:
Herbivore benefits, plant harmed
Plant defenses:
Close long-term relationship
Mutualism (+ / +):
Commensalism (+ / 0):
Parasitism (+ / -):
Niche: Total of organism's use of biotic and abiotic resources
Fundamental niche: Potential niche (no competition) Realized niche: Actual niche (with competition)
Species richness: Number of species Species diversity: Richness + evenness (relative abundance)
Dominant species:
Keystone species:
Ecological succession: Change in species composition over time
Starts with no soil:
Starts with soil:
Climax community:
Intermediate disturbance hypothesis: