All these cycles are uniq in their own way by how they distrubte back into the environent and it is continuous process which never stops. If one of the cycles to end it would effect the other dramtically. All cycles work together keep the biome intact.
Succession In A Swamp
Mostly the only succession can happen in a swamp would be a nutral succession. There another that can happen but more than likely the chances of the biome comming back are at 20% and that would be priamry succession caused by drought.
Water would be a major abiotic factor. The sun would be another one,Mud and rocks would also be an abiotic factor.Plants can also sometimes be considered as an abiotic factor