Ecosystem-Based Fishery Management: A Critical Review of Concepts and Ecological Economic Models

An ecosystem approach means different things to different people. As a result the concept of ecosystem-based fishery management is evolving and it has no universal definition or consistent application. As regards ecosystem modeling, most economic models of fishery ignore the linkages to lower trophic levels. In particular, environmental data and other bottom-up information is widely disregarded. The objective of this paper is to provide a critical review of concepts and ecological economic models relating to ecosystem-based fishery management especially to the environmental issues. The paper started by reviewing basic concepts related to ecosystem-based fishery management and the economic value of ecosystems. Then it aimed to review the development of ecosystem modeling with emphasis on economic aspects of ecology. This was followed by a presentation of the applications of ecosystem-based fishery management in practice. The paper concluded with some critical discussions and brought together conclusions derived from previous literature reviews. We found that although the concept of ecosystem-based fishery management has no universal definition, there is a widespread agreement about the need to implement the ecosystem approach for fisheries in practice. We also revealed that nutrient flow plays a crucial role in an ecosystem. In addition, it has many properties such as recycling and exchanging between consumers and producers, which are similar to monetary flows in an economy. Therefore, nutrients should be chosen as the currency in ecological economic models.Ecosystem approach, fisheries management, ecological economic models

THE VARIATION OF QUALITY AND CURRENT SITUATION OF ARSENIC IN THE PLEISTOCENE AQUIFER- MEKONG DELTA

Joint Research on Environmental Science and Technology for the Eart

Factors Affecting the Competitiveness of Logistics Service Enterprises: A Case Study of Dong Nai Province

Competitiveness of enterprises can maintain and improve competitive advantage in consuming products or services. Besides, enterprises expanded their consumption network through surveying experiences in the logistics service sector. Therefore, the authors surveyed 30 logistics service enterprises with 500 customers. The results showed five factors that affected the competitiveness of logistics service enterprises of Dong Nai Province with 1% significance. Finally, the article draws some recommendations to help enterprises improve the competitiveness of logistics service

CURRENT SITUATION AND SOLUTIONS DEVELOPING TEAM OF THE LECTURES IN VIETNAM CURRENT EDUCATION INSTITUTIONS

In the context that the fundamental and comprehensive reform of higher education in Vietnam is being promoted, it is becoming increasingly urgent to set requirements for innovation and to develop the team of lecturers, especially when the goal of education is the formation of personality and the development of personal capabilities for learners. With the identification of the teaching staff as the decisive factor for the success of the educational innovation process, the article summarizes and analyzes the current situation of the team of lecturers in higher education institutions in Vietnam today. On that basis, some basic solutions are proposed to develop the teaching staff to meet the tasks in the coming time. Article visualizations

Towards green growth in Vietnam: the case of marine capture fisheries

The objective of this study is to assess sustainable development and the potential for green growth of the marine capture fisheries in Vietnam. We use “standard” bio-economic models with additional terms to correct some of ecosystem externalities and to define reference points for the fisheries. The results show that Vietnam’s marine capture fisheries are unsustainable and the fishing effort needs to be reduced about 0.35 and 0.39 of present effort in order to achieve the maximum sustainable yield and maximum economic yield, respectively. If ecosystem externalities are taken into account, the situation is even worse. The potential for green growth in the fisheries is estimated to be about 7.3 billion USD, higher than the export value for fisheries and aquaculture products in Vietnam in 2016. Green growth policies for the fisheries include public subsidies to environmentally friendly industries, reducing the “trash” fish catch and more efficient regulations more effectively enforced

Bio-economic Model of Eastern Baltic Cod Under the Influence of Nutrient Enrichment

The objective of this paper is to study the economic management of Eastern Baltic cod (Gadusmorhua) under the influence of nutrient enrichment. Average nitrogen concentration in the spawning areas during the spawning season of cod stock is chosen to be an indicator of nutrient enrichment. The optimal cod stock is defined using a dynamic bio-economic model for the cod fisheries. The results show that the current stock level is about half of the estimated optimal stock level and that the current Total Allowable Catch (TAC) is about onefourth of the optimal equilibrium yield. The results also indicate that the benefit from a reduction in nitrogen very much depends on the harvest policies. If the TAC is set equal to the optimal equilibrium yield, the benefit of a nitrogen reduction from the 2009 level to the optimal nitrogen level would be about604 million DKK over a 10-year time horizon, given a discount rate of 4% per year. However, if a recovery management plan is chosen, the benefit would only be about 49 million DKK over a 10-year time horizon

BUILDING THE TEACHING STAFF OF DEFENSE EDUCATION AND SECURITY IN UNIVERSITIES TO MEET CURRENT DEVELOPMENT REQUIREMENTS IN VIETNAM

In Vietnam today, strengthening defense and security education for all classes of people, especially students at universities, is an essential job. In particular, one of the critical factors contributing to improving the quality of defense and security education for university students is the teaching staff of defense and security education. However, the teaching staff of defense and security education in Vietnamese universities needs more quantity and has certain limitations in quality. The article outlines several requirements posed to the teaching staff of national defense and security education and, on that basis, proposes some solutions to build the contingent of defense and security education lecturers in Vietnamese universities to meet the current development requirements of the country.  Article visualizations