Nimo

Study smarter with Nimo

Personalised revision that adapts to you. Ace your revision with unlimited practice questions that are designed to help you learn faster. We're slowly rolling out to more and more students.

Try Nimo

How transfer efficiency shapes trophic populations

Ecology • Trophic levels in an ecosystem (biology only)

Key concepts

What you'll likely be quizzed about

  • Biomass refers to the dry mass of living or recently dead organisms, measured to account for variations in water content.
  • A trophic level represents organisms sharing the same position in a food chain, such as producers, primary consumers, and secondary consumers.

Flashcards

Test your knowledge with interactive flashcards

What practical measures can increase edible biomass per area in farming?

Click to reveal answer

Increasing primary productivity or reducing the number of trophic transfers enhances edible biomass per unit area.

Key notes

Important points to keep in mind

Biomass measurements use dried tissue to eliminate water variance.

Producers capture only a small fraction of solar energy (about 1%).

About 10% of biomass transfers between trophic levels on average.

Major losses occur through respiration, faeces, and uneaten material.

Lower transfer efficiency results in smaller biomasses and fewer organisms at higher levels.

Short food chains arise from cumulative energy losses at each transfer.

Higher metabolic rates diminish transfer efficiency by escalating respiration losses.

Enhancing primary productivity increases biomass available to all higher trophic levels.

Built with v0