Study Guide for Topic 2 Test

IB ES&S Exam Review
Topics 2.5-2.7

Function of the Ecosystem: Topic 2.5
Producers, Consumers, Decomposers Roles in the ecosystem.
Photosynthesis and Respiration
Transfers and Transformations of Energy in an Ecosystem
Material Cycles- CO2/O2, H2O and Nitrogen
Gross Productivity, Net Productivity, Primary and Secondary Productivity
How to Calculate Productivity

Changes in the Ecosystem: Topic 2.6
Limiting Factors
Carrying Capacity
S and J population curves
Density-dependent and Density Independent limiting factors
Internal and External Limiting Factors
K and r strategists and their characteristics
Succession
Energy Flow, Productivity, Diversity and Mineral Cycling at different stages of Succession
Factors that affect climax communities

Measuring changes in the system: Topic 2.7
Methods to measure abiotic and biotic components
Methods to measure changes from human activity
Use of EIA’s (Environmental Impact Assessment)