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Tropical Ecosystems and Biodiversity

5 dot points across 5 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

Why is biodiversity so much greater in the tropics, and why does its uneven distribution matter?

Explain the meaning and measurement of biodiversity, account for its concentration in the tropics, and assess its value
A focused answer to the H2 Geography outcome on biodiversity. Its definition and components, the latitudinal gradient and biodiversity hotspots, the reasons for tropical richness, and the ecological and economic value of biodiversity.
9 min answer →

Why are tropical forests being cleared, and how far do the consequences reach beyond the forest itself?

Explain the causes of tropical deforestation and degradation and assess their local and global consequences
A focused answer to the H2 Geography outcome on deforestation. The direct and underlying causes, the local impacts on soil, water and people, and the global consequences for carbon, climate and biodiversity.
10 min answer →

How can tropical ecosystems be conserved while meeting human needs, and what makes conservation succeed?

Compare approaches to conserving and sustainably managing tropical ecosystems and evaluate their effectiveness
A focused answer to the H2 Geography outcome on ecosystem conservation. Protected areas, sustainable use, community and market-based approaches, restoration, and the criteria for judging conservation success.
9 min answer →

How do energy and nutrients move through a rainforest, and why is the system so productive yet so fragile?

Explain energy flow through trophic levels and the nutrient cycle in tropical rainforests, and why the system is vulnerable to disturbance
A focused answer to the H2 Geography outcome on rainforest energy and nutrients. Trophic levels and energy loss, the Gersmehl nutrient stores and transfers, the closed rapid cycle, and why clearance breaks it.
9 min answer →

How does the structure of a tropical rainforest reflect the climate and competition for light?

Describe the structure and adaptations of the tropical rainforest ecosystem and explain how they respond to the equatorial climate
A focused answer to the H2 Geography outcome on rainforest structure. The vertical layers from emergents to forest floor, plant and animal adaptations, and how the hot, wet, aseasonal climate drives the structure.
9 min answer →