Ecological pyramids typically represent a simplified view of energy flow or biomass within an ecosystem. The limitations of ecological pyramids include:
No place for saprophytes: Saprophytes (decomposers) play a crucial role in nutrient cycling but are often not explicitly represented in ecological pyramids.
Simplified food chains: Ecological pyramids often depict simple, linear food chains, while in reality, ecosystems have complex food webs.
Ignoring same species at multiple trophic levels: Some species can occupy multiple trophic levels (e.g., an omnivore). Ecological pyramids often don’t account for this.
The statement “It accommodates a food web” is not a limitation; it would be an improvement if they did.
List I | List II | ||
---|---|---|---|
A | Mesozoic Era | I | Lower invertebrates |
B | Proterozoic Era | II | Fish & Amphibia |
C | Cenozoic Era | III | Birds & Reptiles |
D | Paleozoic Era | IV | Mammals |