Environmental Regulation, Technological Innovation and Development of Marine Fisheries—Evidence from Ten Coastal Regions in China

This study aims to examine the relationship between environmental regulation, technological innovation and the development of China’s marine fisheries. We make a theoretical overview of the relationship between environmental regulation, technological innovation and the development of marine fisheries. Using data from 10 coastal regions of China, we calculate the comprehensive development level of China’s marine fisheries in each region from 2009 to 2018 through the entropy method. Then, we use a double logit model to analyze the effects of environmental regulation and technological innovation on the development level of China’s marine fisheries, and further test the mediating effect of technological innovation. The results show that environmental regulations have a “U-shaped” effect on the development of China’s marine fisheries. Moreover, technological innovation is crucial in promoting the development of China’s marine fisheries. Further, we identify the mediating role of technological innovation, that is, environmental regulation affects the development of China’s marine fisheries by influencing technological innovation. These findings offer theoretical support for the development of China’s marine fisheries.

The Compliance level of fishing actors and their problems in The Coastal Fishing Port Sadeng to regulations

The Coastal Fishing Port Sadeng is located in Girisubo District, Gunung Kidul Regency, Yogyakarta. The Coastal Fishing Port Sadeng plays a role to support the development of marine fisheries in the Special Region of Yogyakarta Province. The initial information obtained was that at The Coastal Fishing Port Sadeng, fishing actors did not comply with licensing documents. The purpose of this study was to determine the problem and assess the level of compliance of fishing’s actors in The Coastal Fishing Port Sadeng, which has fishing vessels with a size of more than 5 GT, to the applicable regulations in the marine and fisheries sector. The method used in this research is a case study on the compliance of fishing vessels at The Coastal Fishing Port Sadeng. The data analysis used is descriptive analysis. The results of the study stated that the level of compliance of fishing vessels in Coastal Fishing Port Sadeng to the ownership of SIUP licensing documents was 97.14% (very good), SIPI 51.43% (very poor), SLO 48.57% (very poor), and SPB 31.43 % (very less). Licensing documents that are not owned or have expired and the incompatibility of documents with the physical ship are problems that cause the level of compliance of fishing business actors at Coastal Fishing Port Sadeng to be considered very low. Keywords: Compliance level, fishing business actors, problems, PPP Sadeng, regulations

Controlling effort, catch and biomass in models of the global marine fisheries

The starting point is the reduced model of global marine fisheries designated by W-3. The main variables of an ordinary differential equation are: the stock of bioresource, its net natural increase, as well as the catch value, which linearly depends on exogenous effort and nonlinearly on available biomass. In W-4, the effort became endogenous as a result of its positive feedback from biomass. In both models, there are values of control parameters in the catch equations, in which the value of the latter can be maintained for a long time at the maximum stable level, with the exception of transition sections. The principle of necessary precaution is fulfilled for small fish stocks more reliably in W-4 than in W-3, thanks to the transformation of the saddle into an unstable node with a common stable node. For these one-dimensional models, the author proposed an original generalization - the R-1 model of two nonlinear ordinary differential equations. In the latter effort, a new phase variable appears, subordinated to proportional control and derivative regulation. Biomass serves as a “prey”, and the effort appears as a “predator”. For two key control parameters, areas of change were identified for which the target stationary state is a locally asymptotically stable node or focus in R-1. A policy has been proposed for the restoration of depleted fish stocks and a transition to a long-term maximum sustainable harvest has been determined. Optimization over a wide time frame (from 40 to 400 years) allows us to calculate the values of the selected control parameters for which the integral catch volume in R-1 is higher than in W-4 for the same initial values of stock, effort and catch. Social constraints from below on the magnitude of the effort, as well as the desired nature of the transition to the target stationary state, are taken into account. The danger of biomass collapse is overcome, unlike previous models.