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GCSEScienceAQACombined Science: TrilogyBiologyRevision NotesEcologyOrganisation of an EcosystemRequired Practical: Ecosystems

Required Practical: Ecosystems (AQA GCSE Combined Science: Trilogy): Revision Note

Lára Marie McIvor

Written by: Lára Marie McIvor

Reviewed by: Lucy Kirkham

Updated on

AQA Combined Science: Trilogy: BiologyAQA Biology

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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    Author
    Reviewer
    Lára Marie McIvor

    Author: Lára Marie McIvor

    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.

    Lucy Kirkham

    Author: Lucy Kirkham

    Expertise: Head of STEM

    Lucy has been a passionate Maths teacher for over 12 years, teaching maths across the UK and abroad helping to engage, interest and develop confidence in the subject at all levels.Working as a Head of Department and then Director of Maths, Lucy has advised schools and academy trusts in both Scotland and the East Midlands, where her role was to support and coach teachers to improve Maths teaching for all.