In the early years of human society, all natural resources such as agriculture, animals, forestry, and fisheries were considered to be public property and the treasure belonged to all people. One branch of these natural resources threatened by over-development is straddling and highly migratory fish species, like tuna, which cannot be protected by a single government. While discussing fishery management, we review the change in tuna catches of thirteen countries in Western and Central Pacific Fisheries Commission (WCPFC), as it represents the impacts from different policies and events during a specific period of time. We reference the method applied in economics science by testing for the existence of stochastic convergence and addressing these break points, which are the important targets due to external shocks or internal influence. The characteristic of the method is in testing both time series and panel data by following the traditional unit root tests methods and unit root tests while considering structural breaks. We are able to conclude in preliminary estimates that some serious historical fishery events happened at the break point time, and if we take these structural breaks into consideration, then the growth of tuna catches will be stationary. In other words, if shocks to relative tuna catches are temporary, then the series stochastically converges, meaning that the manager does not need to intervene in the development of tuna fishery, because temporary shocks do not affect the stationarity of tuna catches¡¦ levels. Once the structural breaks occurred in the past, it is not necessary for these government and international organizations to change fishery policies in order to respond to the breaks. They should realize the meaning of the stationary panel instead of enacting an over-intervening policy based on temporary shocks.

Japan, South Korea, and Taiwan have similar economic backgrounds, as they have undergone the aftermath of destruction and restructuring from the World Wars, and they are all situated in important locations in the East Asia region. Since there have been abundant research studies about competition in economic growth, international trade, and technology advances, however, there competition might also be competition between these countries in the fishery industry. Resulted of Western and the Central Pacific Ocean (WCPO) has been one of the most valuable fishery areas in the world, we use the tuna capture data from the Western and Central Pacific Fisheries Commission (WCPFC) and utilize a cointegration test and error correction model in a time series analysis to analyze the competitive relationship in the three countries. In our study, we found that if the Japanese captures increase, the Taiwanese captures also increase and the same cases occur in the contrasting cases. But the relationships with South Korea and Japan or with South Korea and Taiwan are negative. It represents that the capture in the three countries impact each other. We also try to find the reasons for impact and long-run and short-run competitive relationships.

1982年《聯合國海洋法公約》確立了專屬經濟區的制度後，公海成為海洋生物資源養護與管理的一大缺口，特別是在養護與管理跨界及高度洄游魚群上產生防護的漏洞。1995年國際間通過《聯合國跨界與高度洄游魚類協定》，旨在履行《聯合國海洋法公約》關於養護跨界與高度洄游魚群之規定，並進一步訂立更完善之規範，特別是協定重視各區域性漁業組織之功能，期能透過該些組織，更有效率地管理並養護各區域之跨界與高度洄游魚群。因此，《聯合國海洋法公約》、1995年協定與區域性漁業組織相互間透過法律規範，從架構、實踐與實際執行這三方面試圖形塑一個較為嚴謹及嚴密的網絡。 2004年中西太平洋漁業委員會（WCPFC）成立。協定與委員會透過登臨與檢查的方式，以養護與管理在公海海域之跨界與洄游魚群。然公海自由及公海上由船旗國管轄乃習慣國際法，而為在保育海洋生物資源，在公海上採取相互登臨與檢查為國際海洋法發展之趨勢。由於登臨與檢查乃涉及一國之主權問題，台灣因於國際上之特殊地位，在WCPFC中之登臨與檢查權便為一值得探討之議題。 《WCPFC登檢程序》規定《WCPFC公約》之締約方有相互登臨檢查之權利與義務，而WCPFC之會員有被登檢之義務。由於台灣乃以漁業實體之身份加入，成為WCPFC之會員，並非《WCPFC公約》之締約方，因此台灣是否有登檢其他會員船舶之權利便為我方關切之議題。筆者透過對1995年協定、《WCPFC公約》，以及《WCPFC登檢程序》之分析，認為台灣倘與其他會員或《WCPFC公約》締約方締結登檢協議，則台灣與協議締約方間當可享有《WCPFC登檢程序》中規定之完整的登檢權利與義務，而不受僅為「會員」身份所造成之模糊地位所限制。 / As the 1982 LOS Convention establishes the concept of Exclusive Economic Zone, the high seas has not only become the rest areas without authorities’ jurisdiction, but also been a breach of the conservation and management of living recourses, especially in aspect of the conservation and management of straddling and highly migratory stocks. In 1995, Straddling Stocks Agreement was approved, in which the main purpose is to enforce the principles of LOS Convention relating to the conservation and management of straddling and highly migratory stocks. Straddling Stocks Agreement respects the functions of the regional fishing organizations and expects it to manage and conserve straddling and highly migratory stocks more efficiently in each region. Consequently, through making stipulations, the LOS Convention, 1995 Agreement, and regional fishing organizations attempt to build up a strict network of framework, implementation, and enforcement. In 2004, WCPFC Commission was founded. Through boarding and inspection, 1995 Agreement and WCPFC Commission conserve and manage the straddling and highly migratory stocks. Although the high-seas freedoms and flag State jurisdiction are the parts of customary international law, it is the trend in development of international law to adopt boarding and inspection in high seas for conserving living resources in ocean. Due to boarding and inspection concerning the sovereignty, as the special status in international society, Taiwan’s boarding and inspection rights in WCPFC Commission become a disputed issue. WCPFC Boarding and Inspection Procedures imply that the Contracting Parties of WCPFC Convention have rights and obligations to board and inspect each other’s ships, but the members of WCPFC only have the obligation of being boarded and inspected. Since Taiwan, as the fishing entity, participated in WCPFC as the Member rather than the Contracting Parties. As a result, whether Taiwan possessing any rights to board and inspect other members’ ships is concerned by Taiwan’s authority. By analyzing 1995 Agreement, WCPFC Convention, and WCPFC Boarding and Inspection Procedures, the author concludes that if Taiwan has the agreements relating to boarding and inspection with other Members or Contracting Parties, Taiwan would absolutely possess the full rights and obligations, which the WCPFC Boarding and Inspection Procedures stipulate, without constrained by its ambiguous status caused by the role of Member.