Question

How is a trophic cascade (top down regulation) different from the traditional trophic pyramid (bottom up regulation)?

Answer 1

▪Trophic Cascades have been observed in small-scale or simple food webs, but not in large, complex, open-ocean ecosystems.

▫ Using data spanning many decades from a once cod-dominated northwest Atlantic ecosystem, we demonstrate a trophic cascade in a large marine ecosystem.

▪ Several cod stocks in other geographic areas have also collapsed without recovery, suggesting the existence of trophic cascades in these systems.

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Answer 2

Trophic Pyramid

Explanation:

• The energy pyramid, another method for understanding a biological system is by understanding the subject of trophic cascades
• Trophic cascades found when the abundance of specific living beings are significantly influenced
• A top-down trophic course happens when there is an removal of a top predator
• The  base up cascade, the number of primary producers in essential makers will consistently control the increase/decrease of the energy in the higher trophic levels
• Primary producers are plants, phytoplankton and zooplankton that require photosynthesis