What is hydrarch succession?

Explanation

(a) In primary succession in water, the pioneers are the small phytoplanktons,
(b) They are replaced with time by free-floating angiosperms, then by rooted hydrophytes, sedges, grasses and finally the trees.
(c ) The climax again would be a forest. With time the water body is converted into land
(d) All the succession whether taking place in water or on land, proceeds to a similar climax community - The mesic.