Effects of high and low marsh macrophyte species and plant density on hydraulic control and pollutant removal in constructed wetlands - Syafiq Shaharuddin; Nurul Hana Mokhtar Kamal; Noor Aida Saad; Sukratta Cham Long; Mohamad Aiman Iqbal Abdul Majid; Junaidah Abdullah; Mohd Remy Rozainy Mohd Arif Zainol (Ecohydrology & Hydrobiology, 2026)