Complex sentence: Common property regimes typically protect the core resource and allocate the fringe through complex community norms of consensus decision-making facing the difficult task to devise rules that limit the amount, timing, and technology used to withdraw various resource units from the resource system.
Split into simpler sentences: Common property regimes typically protect the core resource and allocate the fringe through complex community norms of consensus decision-making. Common resource management has to face the difficult task of devising rules that limit the amount, timing, and technology used to withdraw various resource units from the resource system.