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GCSEBiology: Combined ScienceAQARevision Notes7. Ecology7.2 Organisation of an Ecosystem7.2.2 Required Practical: Ecosystems

Required Practical: Ecosystems (AQA GCSE Biology: Combined Science)

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RP9: Investigating Ecosystems

  • Aim: To measure the population size of a common species in a habitat and use sampling techniques to investigate the effect of a factor on the distribution of this species
  • You will:
    • Use a quadrat to estimate the population size of a plant species in a survey area
    • Use a transect line and a quadrat to investigate the effect of a factor on the number of plants in a survey area

Measuring the population size of a common species in a habitat

RP Ecosystems_ Estimating Population Size Method (1)_1, downloadable IGCSE & GCSE Biology revision notes

RP Ecosystems_ Estimating Population Size Method, downloadable IGCSE & GCSE Biology revision notes

How to estimate the population size of a plant species in a survey area

Investigating the effect of a factor on the distribution of this species

RP Ecosystems_ Investigating the Effect of a Factor on the Distribution of a Species Method (1)_1, downloadable IGCSE & GCSE Biology revision notes

RP Ecosystems_ Investigating the Effect of a Factor on the Distribution of a Species Method (2)_1, downloadable IGCSE & GCSE Biology revision notes

How to investigate the effect of a factor on the number of plants in a survey area

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    Lára

    Author: Lára

    Expertise: Biology Lead

    Lára graduated from Oxford University in Biological Sciences and has now been a science tutor working in the UK for several years. Lára has a particular interest in the area of infectious disease and epidemiology, and enjoys creating original educational materials that develop confidence and facilitate learning.