When habitats are broken up into smaller pieces, called habitat fragmentation, it makes it harder for species to move around. This can cause:
- Smaller populations that are more likely to die out
- Less variety in genes, which makes species weaker and less resilient to environmental changes
- Problems with natural processes and services in the ecosystem
There are three ways to think about ecological connectivity: how the land is arranged (structural connectivity), how animals actually move (functional connectivity), and a mix of both physical and actual movement (effective connectivity).
Structural connectivity means the way the land is physically set up to help animals and plants move around. Things like habitat corridors—strips of natural land connecting habitats—make it easier for species to travel from one place to another.
Functional connectivity is about how animals and plants actually move through the landscape. It depends on things like how they behave, the quality of the habitat, and the layout of the land.
Effective connectivity combines both how the land is arranged and how species move. It gives a full picture of how well animals, plants, and resources can travel and interact in an area.