The authors combined in situ monitoring of stable isotopes and ecohydrological monitoring in different urban vegetation in Berlin. They provide novel insights on plant physiology and hydrological functioning through high-resolution isotope data to capture sub-daily plant water uptake and internal water cycling. 

Blue-green infrastructure is a critical tool for improving stormwater quality, but the removal of dissolved, hydrophilic contaminants remains a major challenge. The authors propose a tiered conceptual framework of progressively more complex, costly, and resource-intensive interventions to remove dissolved, hydrophilic contaminants and thus minimize risks to ecosystems and drinking water sources.

Microplastics are ubiquitous – in the environment and in the human body. However, accurately detecting these particles poses major challenges for researchers from various disciplines. The authors described the methodological difficulties in the journal and call for more standardized methods in biomonitoring.