Salinity tolerance of aquatic plants indicated by monitoring data from the Netherlands

摘要: Abstract Data on salinity tolerance of aquatic plant species are scarce, but required to better understand species’ responses in multiple stressed environments. We analyzed data from a Dutch Water board the province Zeeland according occurrence taxa relation (chloride concentration). The dataset contained 862 samples plants (altogether 46 taxa) and chloride concentrations. smallest range was found for Nuphar lutea occurring sites with 43 140 mg l−1 Cl−. widest observed Glaux maritima 710 22,000 Two (N. Potamogeton trichoides) had an optimum lower than 100 Cl−, while three (G. maritima, Salicornia spp. Ulva (=non-filamentous)) higher 10,000 Change points (CPs) were determined class level along gradient. These CPs defined as class, at which largest change is determined. CP that relatively sensitive, such Sparganium erectum Carex riparia, below 200 relative tolerant taxa, Stuckenia pectinata Ranunculus sceleratus, concentrations more tenfold higher. upper limit occurred study area generally similar few limits previously published. Implications assigning water body types implementing Framework Directive Netherlands discussed.