Net biomass production, energy and nutrients of Potamogeton crispus L., in unpolluted and polluted waters of Ganga river at Varanasi, India.

ambiente urbano biomasa biomass biomasse calcio calcium clima subtropical climat subtropical cursos de agua energia energie energy environmental impact environnement urbain fosforo hiver impacto ambiental inde india invierno nitrogen content phosphore phosphorus potamogeton potasio potassium rivers seasonal variation sodio sodium subtropical climate teneur en azote urban environment water pollution winter