What is a potential hazard posed by large-branch removal from decurrent trees?

The removal of large branches from decurrent trees, which have a spreading growth habit, can lead to the formation of codominant stems. This is especially relevant after a significant branch is cut away, as the adjacent stems that were previously subordinate may start to grow more vigorously. In the absence of the larger branch, these stems can become more dominant, often leading to structural weaknesses in the tree due to their close proximity and competition for space.

Codominant stems are characterized by having multiple leaders that are often the same size, which can create problems such as included bark, reducing the structural integrity of the tree. This increases the risk of branch failure in the future as these structures may not support the weight of the leaves and branches effectively. Understanding this consequence is crucial for arborists when planning removals, as it affects the overall health and stability of the tree.

The other options do not address the specific concerns that arise from the structural changes caused by the removal of large branches in decurrent trees.