What is the difference between a xerach succession and a hydrach succession?

Answer 1

Xerach succession is initiated in very dry situations and climates. Hydrach succession takes place on very wet land or in water.

Answer 2

Xerarch succession occurs on dry, nutrient-poor habitats like sand dunes, while hydrarch succession occurs in wet, nutrient-rich habitats like ponds or lakes. Xerarch succession begins with pioneer species tolerant to drought conditions, while hydrarch succession starts with hydrophytic plants adapted to waterlogged environments.