- Leopard Toads are threatened by
habitat
fragmentation. Barriers like roads, walls and canals
make it difficult for toads (and other small animals) to
migrate or find suitable places to feed and breed. For example, the M3 freeway created a barrier between the toad’s
feeding and breeding areas, resulting in a population
decline.
- Many toads are killed on roads when they migrate
between their feeding and breeding areas. In about August
adult toads migrate at night from gardens and open
spaces to water bodies to breed. Sometime between the
months of October and December the young toads
migrate from water bodies to their feeding grounds.
- Many frog species are threatened because there are
very few seasonal wetlands left on the Cape Flats. These
animals now depend on urban rivers, permanent wetlands
and garden ponds where there are more predators that can
eat the young tadpoles.
- Frogs and tadpoles are killed by pollution in urban
rivers and wetlands. Alien fish, such as bass and carp, also eat tadpoles
reducing recruitment to the population. Many urban rivers and wetlands are invaded by
alien
water plants, which the city removes by
dredging. If dredging takes place during the breeding
season, many tadpoles and young toads are destroyed.
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