Future projections based on the IPCC high emissions scenario RCP8.5 have previously shown that the Pacific Northwest coastal waters will be subjected to altered ocean states in the upwelled shelf waters, resulting in higher primary productivity and increased regions of hypoxia and acidification in the inner estuarine waters such as the Salish Sea. However, corresponding effects on the lower trophic levels and submerged aquatic vegetation have not yet been quantified. Supported by new synoptic field data, explicit coupled simulation of algae, zooplankton, and eelgrass biomass was accomplished for the first time in the Salish Sea. We re-applied the improved model to evaluate future ecological response and examined potential algal species shift, but with the effects of zooplankton production, metabolism, and predation-prey interactions included. We also evaluated the role of eelgrass with respect to potential for improvements to dissolved oxygen and pH levels and as a mitigation measure against hypoxia and ocean acidification. The results re-confirm the possibility that there could be a substantial area-days increase (≈52-fold) in exposure of benthic and near-bed pelagic species to hypoxic waters in 2095. The projections for ocean acidification similarly indicate ≈ 20 -114% increase in exposure to lower pH corrosive waters with aragonite saturation state Ω_A <1. Importantly, projected increase in primary productivity was shown to propagate to higher trophic levels, with ≈ 13% and 25% increases in micro and mesozooplankton biomass levels. However, the preliminary results also point to sensitivity of the eelgrass model to environmental stressor and potential loss eelgrass biomass in the future.

根据IPCC高排放情景RCP8.5进行的未来预测先前表明，太平洋西北沿海水域将在上升架水域中遭受海洋状态的变化，从而导致较高的初级生产力以及内河口地区的缺氧和酸化区域增加萨利什海等水域。然而，对较低营养水平和淹没的水生植被的相应影响尚未量化。在新的天气数据的支持下，藻类，浮游动物和鳗草生物量的显式耦合模拟首次在萨利什海完成。我们重新应用了改进的模型来评估未来的生态响应并检查了潜在的藻类转移，但其中包括浮游动物生产，代谢和捕食与被捕食相互作用的影响。我们还评估了鳗草在改善溶解氧和pH值方面的作用，并作为缓解缺氧和海洋酸化的缓解措施。结果再次证实了在2095年底栖和近床浮游物种暴露于低氧水域的面积-天数可能会大幅增加（约52倍）的可能性。海洋酸化的预测同样表明约20 -114在文石饱和状态Ω的较低pH腐蚀性水中暴露的百分比增加Ω_A <1。重要的是，预计初级生产力的增长会传播到更高的营养水平，其中微量和中游浮游生物的生物量水平分别增加约13％和25％。但是，初步结果也表明，鳗model模型对环境胁迫的敏感性以及今后潜在的鳗e生物量损失。