Pathway toward sustainable blue economy: Consideration of greenhouse gas emissions, trade, and economic growth in 25 nations bordering the Indian ocean

The sustainability of the blue economy (BE) may be impeded by the adverse consequences of human activities, such as greenhouse gas (GHG) emissions, unsustainable economic expansion, and engagement in environmentally harmful trading practices. Therefore, this study aims to determine the impact of GHG emissions, trade, and economic growth on the BE. To achieve this, we used a panel dataset of 25 selected countries surrounding the Indian Ocean, covering the period 2002–2019. As a process of estimation, we employed the Westerlund error correction model to detect cointegration. To determine the long-term relationship among the variables, we adopted the cross-sectional autoregressive distributed lag (CS-ARDL) approach, which revealed a significant outcome in the long run but an insignificant outcome in the short run. In response to this divergence, the panel corrected standard error (PCSE) model was applied to correct the autocorrelation problem. Subsequently, a two-step generalized methods of moment (GMM) test was conducted to check robustness. Based on the results of PCSE and GMM, this study reveals that trade has a negative effect on the BE, while GHG emissions and economic growth have a positive ascendance. From a policy standpoint, all governments must integrate ocean-based solutions into their national climate pledges to fulfill the objectives outlined in the Sustainable Development Goals (SDGs), particularly SDG 14 (Life Below Water).