51

Last updated

25 August 2025

pptx, 23.46 MB
pptx, 23.46 MB
pdf, 26.91 KB
pdf, 26.91 KB

This 56 slide ready to teach presentation for IB DP Environmental Systems and societies unit 2 part 5 (Succession, Zonation and change in Ecosystems) with content, images, tasks for students and additional links/videos includes:

Zonation & Succession

Zonation vs Succession

Zonation vs. Succession (Simplified Comparison)

Zonation – Ecological Niches & Limiting Factors

Altitudinal Zonation (e.g., Mountains)

Rocky Shore Zonation

Kite Diagrams – Species Distribution

r and K Reproductive Strategies – Population Curves

K-strategist Characteristics

r-strategist Characteristics

Succession – What Is It?

Two Types of Succession (Primary vs. Secondary)

Primary Succession – Starting Without Soil

Mosses and Lichens – Pioneer Species

Formation of Soil – Early Succession

Simple Plants (Mosses/Ferns) Appear

Soil Improves – Grasses and Wildflowers Grow

Larger Plants Establish – Shrubs and Trees

Complex Communities Form – Full Succession

Example: Galapagos Islands – Volcanic Succession

Secondary Succession – After Disturbance

Secondary Succession – Natural Recovery

Primary vs. Secondary Succession – Comparison

Climax Community – Final Stable State

Case Study: Sand Dune Succession

Stages of Sand Dune Succession

Yellow Dunes and Marram Grass

Grey Dunes and Plant Diversity

Dune Slacks – Wetland Areas

Changes During Succession – Summary of Trends

Production vs. Respiration Over Time

Climax Community Example – East African Savannah

What is a Sere? – Succession Pathways

Types of Sere – Lithosere, Psammosere

Plagiosere – Human-Interrupted Succession

Exam style Questions and Answers

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