What this lesson teaches
I can describe Singapore's natural features: its land, climate and ecosystems.
Syllabus K329, Topic 5.1, Key Question 1. What are the natural characteristics of Singapore?
Make a guess
A plan keeps the same total area of forest but splits it into many small, separate patches. What might be lost?
- The trees, which can be replanted on lawns nearby.
- Routes that let animals move between habitats.
- The patches will join back together by themselves.
- Nothing, because the total area is the same.
Show the answer
Routes that let animals move between habitats.
Breaking a habitat into patches cuts the links between them. Some species cannot cross roads or open ground to reach food or mates.
Rainforests, mangroves, shores and reefs each support different life and services, and the links between them matter too.
An ecosystem is living things interacting with each other and their surroundings. Singapore's land ecosystems include tropical rainforest. Its plants provide habitat, cycle water and store carbon.
Coastal habitats are different. Intertidal areas are between land and sea: exposed at low tide and covered at high tide. Mangroves grow in waterlogged coastal mud. Their roots shelter animals, slow water and trap mud. Coral reefs support many sea creatures. No habitat can fully replace another.
Biodiversity is the variety of life. Losing one patch of habitat can cut the routes between the patches that remain. So conservation needs connected habitats as well as protected ones. People enjoy these places too, but heavy use must be managed.
- Rainforest
- Singapore's main land ecosystem.
- Mangroves
- Roots shelter animals, slow water and trap mud.
- Connections
- Linked habitats let species move.
Step by step
Different habitats
Rainforest, mangrove, intertidal area and reef.
Useful processes
Mangrove roots shelter life and trap mud.
Linked spaces
Corridors help animals move between habitats.
Worked example: Why a corridor helps
NParks plans nature corridors and planted nature ways between green spaces. They help animals move between habitats. But a thin corridor cannot replace a large, healthy habitat.
Watch out for this
Any planted lawn can replace a cleared forest.
A lawn lacks the forest's species, layers and size. Equal green area does not mean equal wildlife.
Check your understanding
A plan keeps the same total green area but splits a forest into small, separate patches. What should be checked?
- Whether each patch is large enough to hold a picnic area for visitors.
- Nothing, because the green area is unchanged.
- Whether species can still move between habitats.
Show the answer
Whether species can still move between habitats.
Yes. Splitting habitat can cut vital links.