Question

In ecotone which species become abundant?
(A) Sibling species
(B) Endemic species
(C) Rare species
(D) Edge species

Answer 1

Hint: Ecotone is the area of the land that is the transition between the two ecosystem communities. It may be forest or field or grassland. Depending on that, the ecotone is classified into two types as the local ecotone and the regional ecotone.

Complete answer:
Local ecotone is defined as the zone that is formed by the transition between the field and the forest. Where the regional ecotone is defined as the zone that lies between the grassland and the forest ecosystem. It means this ecosystem has the trees within the certain areas of the grasslands. This ecosystem has a greater number of animal’s than the species that is present either in the forest or the grassland ecosystem.

The animals that can live in either forest or the grass can adapt themselves in the ecotone ecosystem. Hence the increased number of species in the region of the ecotone border is called the edge effect. The animal or the species that are found their lives abundantly in the zone of ecotone is known as the edge species.

Hence the correct answer is OPTION(D)

Note: The animals that live in the ecotone are deer that may be white tailed and the mule varieties, snowshoe hare, robin, cottontail rabbit, blue jay etc. Ecotone when it resembles the zones of the freshwater and the salt water is called estuary. The zone between the marine and the terrestrial ecosystem is the mangrove forest.