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M5 - Marine ecology
(Part 2)

This block builds on knowledge and concepts introduced in M1–M5 (Part 1), learners planning to complete the full IGCSE Marine Science course are strongly encouraged to study the previous blocks first. However, this block can also be studied as a stand-alone unit focused on practical ecology and fieldwork skills.

Key ecological concepts will be reviewed where necessary, making it suitable for learners who wish to develop their understanding of ecological investigations, data collection and exam-style practical questions.

How do marine scientists investigate ecosystems when they can't count every organism in the ocean?

In this practical-focused Marine Ecology block, students will develop the skills used by real ecologists to study marine environments and analyse ecological data.

Together we'll explore quadrat sampling, species richness, population estimates, line and belt transects, shore profiles, sediment analysis and abiotic factors. Although we won't be carrying out full fieldwork investigations during live lessons, students will learn how each technique works through demonstrations, worked examples and exam-style questions, with the option to try investigations independently with a grown-up if they wish.

With interactive Kahoot quizzes, practical demonstrations, data analysis and plenty of opportunities to apply knowledge to real ecological scenarios, this block is ideal for learners who want to build confidence in the practical skills assessed throughout IGCSE Marine Science.

Course Objectives:

By the end of this block, students should be able to:

Describe how ecologists estimate population size and species richness using sampling techniques.

Explain how quadrats are used to investigate the abundance and distribution of organisms.

Describe and compare line transects and belt transects.

Explain how species distribution changes across marine ecosystems.

Identify and measure important abiotic factors that influence ecosystems.

Describe how shore profiles can be measured and interpreted.

Explain how sediment size and particle characteristics can be investigated.

Describe methods used to measure the moisture content of sediments.

Select appropriate methods for investigating different marine ecosystems.

Present, interpret and analyse ecological data.

Evaluate ecological investigations and identify sources of error and limitations.

Specialist Resources Needed:

Throughout the block, learners will be introduced to a range of ecological fieldwork equipment including quadrats, transects, clinometers, identification guides and sampling equipment.

These techniques will be demonstrated during lessons and linked to IGCSE examination questions. Learners are welcome to try some of the investigations independently with appropriate adult supervision, but this is entirely optional.

Worksheets and supporting resources will be available on the dashboard, and students can fully participate in the course by watching the demonstrations and engaging with the discussions and exam practice activities.

If you definitely do not require your live space for this course, please opt to cancel your registration through the link in your Zoom confirmation email.
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