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4.1 Species, Communities and Ecosystems

Experiments

Here are experiments our science specialists have selected to support the IB* topic.

RecommendedInquiry

Modeling Population Dynamics

Experiment #18 from Investigating Biology through Inquiry

In this Preliminary Activity, you will use a spreadsheet to model a simple exponential growth for one species. You will then explore the effects of carrying capacity, competition, and predators on population dynamics.

After completing the Preliminary Activity, you will first use reference sources to find out more about population dynamics before you choose and investigate a researchable question. Some topics to consider in your reference search are:

  • populations
  • communities
  • herbivores
  • predators
  • population dynamics
  • carrying capacity

RecommendedInquiry

Biodiversity in Ecosystems

Experiment #15 from Investigating Environmental Science through Inquiry

In the Preliminary Activity, you will learn techniques for determining diversity as well as techniques for measuring light.

After completing the Preliminary Activity, you will first use reference sources to find out more about biodiversity in ecosystems before you choose and investigate a researchable question.

Inquiry

Decomposition Column Investigations

Experiment #18 from Investigating Environmental Science through Inquiry

In the Preliminary Activity, you will gain experience using a pH Sensor and learn pH measuring technique as you determine the pH of a water sample.

After completing the Preliminary Activity, you will first use reference sources to find out more about the decomposition and related concepts before you choose and investigate a researchable question.

RecommendedInquiry

Ecocolumn Investigations

Experiment #19 from Investigating Environmental Science through Inquiry

In the Preliminary Activity, you will gain experience using a Soil Moisture Sensor and learn soil moisture measuring technique as you determine the volumetric soil water content of a soil sample.

After completing the Preliminary Activity, you will first use reference sources to find out more about ecosystem concepts before you choose and investigate a researchable question dealing with ecosystems. Some topics to consider in your reference search are:

Educational Standard
International Baccalaureate (IB)
Subject
Biology
Section
Core
Topic
4. Ecology

* The IB Diploma Program is an official program of the International Baccalaureate Organization (IBO) which authorizes schools to offer it. The material available here has been developed independently of the IBO and is not endorsed by it.

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