IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France.
IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France.
Environ Pollut. 2023 Aug 15;331(Pt 1):121791. doi: 10.1016/j.envpol.2023.121791. Epub 2023 May 16.
Urban streams display consistent ecological symptoms that commonly express degraded biological, physical, and chemical conditions: the urban stream syndrome (USS). Changes linked to the USS result in consistent declines in the abundance and richness of algae, invertebrates, and riparian vegetation. In this paper, we assessed the impacts of extreme ionic pollution from an industrial effluent in an urban stream. We studied the community composition of benthic algae and benthic invertebrates and the indicator traits of riparian vegetation. The dominant pool of benthic algae, benthic invertebrates and riparian species were considered as euryece. However, ionic pollution impacted these three biotic compartments' communities, disrupting these tolerant species assemblages. Indeed, after the effluent, we observed the higher occurrence of conductivity-tolerant benthic taxa, like Nitzschia palea or Potamopyrgus antipodarum and plant species reflecting nitrogen and salt contents in soils. Providing insights into organisms' responses and resistance to heavy ionic pollution, this study sheds light on how industrial environmental perturbations could alter the ecology of freshwater aquatic biodiversity and riparian vegetation.
城市溪流表现出一致的生态症状，通常表达了生物、物理和化学条件恶化：城市溪流综合征（USS）。与 USS 相关的变化导致藻类、无脊椎动物和河岸植被的丰度和丰富度持续下降。在本文中，我们评估了来自城市溪流工业废水的极端离子污染对环境的影响。我们研究了底栖藻类和底栖无脊椎动物的群落组成以及河岸植被的指示特征。底栖藻类、底栖无脊椎动物和河岸物种的主要类群被认为是广适性的。然而，离子污染影响了这三个生物区室的群落，扰乱了这些耐受物种组合。事实上，在废水排放后，我们观察到了对电导率耐受的底栖分类群的更高出现率，如 Palea 裸甲藻或 Potamopyrgus antipodarum 以及反映土壤中氮和盐分含量的植物物种。本研究深入了解了生物体对重金属离子污染的反应和抗性，揭示了工业环境干扰如何改变淡水水生生物多样性和河岸植被的生态。
