One striking characteristic of Gelidium is that it must be wild-harvested rather than farmed. Unlike Gracilaria for culinary agar production, Gelidium grows slowly and thrives only in cold, turbulent waters over rocky seabeds, conditions nearly impossible to replicate in aquaculture. This dependence on wild harvesting explains the need for seaweed collectors during WWII, and continues to make Gelidium a strategically critical resource.
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（二）无民事行为能力人或者限制民事行为能力人订立的仲裁协议；
Source: Computational Materials Science, Volume 266
（三）非法进行影响国（边）界线走向的活动或者修建有碍国（边）境管理的设施的。