Soru

Passage:
The legal principle known as the public trust doctrine originated in Roman law, notably in the Institutes of Justinian, which declared that certain resources—such as the air, running water, the sea, and its shores—are by nature common to all humankind. This concept was subsequently integrated into English common law, where the sovereign held title to navigable waterways strictly in trust for the public benefit. When adopted by United States courts in the nineteenth century, most famously in the 1892 Supreme Court decision *Illinois Central Railroad v. Illinois*, the doctrine’s scope was narrowly defined. It served primarily as a safeguard for economic and logistical interests, specifically ensuring public access to navigable waters for the purposes of commerce, navigation, and commercial fishing. Under this traditional framework, states were largely prohibited from alienating trust lands to private entities if such conveyances would substantially impair the public’s ability to navigate or trade.

For decades, the public trust doctrine remained tethered to these utilitarian origins. However, the late twentieth century witnessed a profound jurisprudential shift, fundamentally transforming the doctrine's application. This evolution culminated in the California Supreme Court’s landmark 1983 decision in *National Audubon Society v. Superior Court*, commonly referred to as the Mono Lake case. In this ruling, the court explicitly broadened the definition of protected public trust uses well beyond traditional commerce and navigation. The court established that the doctrine also encompasses the preservation of ecological integrity, scientific study, and scenic recreation.

Furthermore, the Mono Lake decision resolved a long-standing tension between the public trust doctrine and the appropriative water rights system, which allows users to divert water for beneficial use elsewhere. The court ruled that the state possesses a continuous, non-delegable duty to supervise and reassess trust resources. Consequently, the state retains the authority to reconsider and modify previously granted appropriative water rights if those diversions later cause unforeseen ecological damage to navigable bodies of water.

Despite its environmental accolades, this modern expansion has faced robust opposition from legal scholars and agricultural advocates. Critics argue that extending the public trust doctrine to encompass ecological preservation injects severe regulatory uncertainty into water management. They contend that by allowing courts to retroactively alter established appropriative rights, the expansion destabilizes the long-term investments of municipalities and agricultural enterprises. Moreover, these critics warn that the ruling inappropriately shifts authority away from specialized administrative water boards, placing complex hydrological management into the hands of an unpredictable judiciary.

Question:
According to the passage, which of the following principles or outcomes were explicitly established by the California Supreme Court’s 1983 ruling in the Mono Lake case? (Select all that apply)