Trophic Levels and Ecosystem Impact

The video tutorial discusses a food web scenario in a habitat of 25.6 km², where a project reduces the primary producers' biomass by 50% and removes all rabbits and deer. This leads to a significant impact on coyotes, which lose their food source. The instructor evaluates different answer choices, explaining why certain assumptions are unfounded. The concept of the energy pyramid and the 10% rule is introduced to explain the changes in biomass and energy transfer. The correct answer is identified, and viewers are encouraged to ask questions.

What is the total biomass of primary producers in the meal habitat?

• 500 kilograms per square kilometer

• 2,000 kilograms per square kilometer

• 1,500 kilograms per square kilometer

• 1,000 kilograms per square kilometer

What is the expected impact of the development project on the primary producers' biomass?

• It will decrease by 25%

• It will decrease by 50%

• It will remain the same

• It will increase by 50%

Which animals are removed from the habitat due to the development project?

• Coyotes and hawks

• Rabbits and deer

• Deer and coyotes

• Hawks and rabbits

What is the likely outcome for coyotes after the removal of their food sources?

• Their biomass will dramatically reduce

• Their population will increase

• They will switch to a new habitat

• They will start eating plants

Why is it unlikely that coyotes will outcompete hawks?

• Hawks are faster

• Hawks have a larger population

• There is no evidence to support this assumption

• Coyotes are herbivores

What rule explains the energy transfer between trophic levels?

• 10% rule

• 15% rule

• 20% rule

• 5% rule

What percentage of energy is transferred from one trophic level to the next?

• 50%

• 10%

• 25%

• 5%

What is the expected reduction in the biomass of coyotes?

• It will decrease by 10%

• It will remain the same

• It will increase by 10%

• It will approach zero

What is the correct answer to the problem discussed in the video?

• Coyotes' biomass will be dramatically reduced

• Primary producers' biomass will increase

• Coyotes will outcompete hawks

• There will be 50% fewer hawks

What should viewers do if they have questions about the video content?

• Comment below the video

• Contact the teacher directly

• Wait for the next video

• Search online for answers