Anthropogenic pressure adds up and interacts with the effects of climate change with a varying magnitude and potential changes depend on species’ Life History (LH) traits, local environmental conditions and co-occurrence of several stressors. Stressors exert negative effects on marine biota when acting as a single factor, but the effects may be amplified when more than one stressor work in combination, producing interacting effects on biodiversity and ecosystem functioning. The impairment of individual functional traits (FT) leads to strong rebounds on LH traits and this may have ecological consequences. No studies actually relate FT and antioxidant enzymes to multiple environmental stressors. In this paper we investigate the effects of food concentration, temperature and hypoxia on metabolic traits as expressed by a proxy such as respiration rate and feeding behaviour and on antioxidant enzymes (Catalase, Superoxide dismutase, Glutathione S-Transferase, Glutathione peroxidase) for the bivalve Mytilus galloprovincialis. Mussels were exposed to three temperatures (12, 20 and 28 °C) under normoxic (8 mg O₂ l⁻¹) and hypoxic (~2 mg O₂ l⁻¹) conditions, with varying food concentrations ranging from 0.9 to 3.5 μg of chlorophyll l⁻¹. The results show that FTs and antioxidant enzymes were affected by temperature, hypoxia and food availability, and outcome allowed us to emphasise that a multi-scalar integrated approach is suitable to detect and monitor effects of anthropogenic disturbance on ecosystem functioning.

人为压力加在一起并与气候变化的影响发生不同程度的变化，其潜在变化取决于物种的生命史（LH）性状，当地环境条件以及几种应激源的共现。压力源作为单一因素对海洋生物群产生负面影响，但当多个压力源组合工作时，这种影响可能会放大，从而对生物多样性和生态系统功能产生相互作用的影响。个别功能性状（FT）的受损会导致LH性状强烈反弹，这可能会带来生态后果。实际上，尚无研究将FT和抗氧化酶与多种环境胁迫因素相关联。在本文中，我们研究了食物浓度的影响，鸡没食子。贻贝在常氧（8 mg O ₂ l ^-1）和低氧（〜2 mg O ₂ l ^-1）条件下暴露于三种温度（12、20和28°C），食物浓度范围从0.9到3.5μg叶绿素l ^-1。结果表明，FTs和抗氧化酶受温度，缺氧和食物供应量的影响，结果使我们强调多尺度综合方法适用于检测和监测人为干扰对生态系统功能的影响。