Effects of fishing and acidification‐related benthic mortality on the southeast Australian marine ecosystem

摘要: Oceanic uptake of anthropogenic carbon dioxide (CO2) is altering the carbonate chemistry seawater, with potentially negative consequences for many calcifying marine organisms. At same time, increasing fisheries exploitation impacting on ecosystems. Here, using increased benthic-invertebrate mortality as a proxy effects ocean acidification, potential impact two stressors fishing and acidification southeast Australian ecosystem to year 2050 was explored. The individual interaction biomass diversity were examined entire regional assemblages. For 61 functional groups or species, cumulative moderate additive (30%), synergistic (33%), antagonistic (37%). Strong resulted in (22%), (40%), (38%) effects. greatest demersal food web, predation affecting benthic production. Areas that have been subject intensive most susceptible effect, although also mitigated some decline biodiversity observed acidification. model suggested long-term could act synergistically sensitivity change from (decades) causing unexpected restructuring pelagic webs. Major regime shifts occur around 2040. Greater focus needed how differential resources may exacerbate accelerate environmental changes such