The ecosystem health of rivers downstream of dams is among the issues that has become focus of attention of many researchers particularly in the recent years. This paper aims to deal with the question, how the environmental health of a river ecosystem can be addressed in water resources planning and management studies. In this study, different parameters affecting the ecosystem of river-reservo...

Keberadaan gulma dipengaruhi oleh jenis pupuk yang diberikan pada tanaman budidaya. Setiap memiliki kandungan berbeda sehingga berpengaruh terhadap spesies tumbuh. Agar dapat mengetahui tumbuh perlu dilakukan identifikasi lahan Penelitian bulan Juni – Agustus 2021 di Kebun pertanian Kelompok Tani Sinar Harapan, Kota Tarakan Provinsi Kalimantan Utara. Metode penelitian yaitu metode sampling acak...

On the basis of “Environmental quality standard for surface water” (GB 3838-2002) in China, eight water indexes were measured M River, including pH, temperature (T), transparency (SD), dissolved oxygen (DO), chemical needs Oxygen (COD), ammonia nitrogen (NH 3 -N), total (TN), phosphorus (TP). Using single factor index method, it is concluded that pollution River serious and beyond Grade V envir...

Contributions on a PC formatted disk, in any standard word processor or DOS (ASCII) text, or as email attachments, will assist the Editor. continued on next page Alternative stable states, resilience and hysteresis during recovery from eutrophication A case study . . . . . . . 1-4 Ramón Margalef 1919-2004 . . . . . . . . 5 Environmental Issues Ubiquity and Cosmopolitanism of Protists questioned...

Describimos la riqueza y abundancia de las especies murciélagos Reserva del Valle Mamoní ubicada en el Corregimiento Las Margaritas, Distrito Chepo, cual se ubica punto más estrecho Istmo Panamá. Se realizaron muestreos mensuales febrero a diciembre 2021 zonas bosques primario secundario; agrícolas ribereñas aledañas reserva. Mediante uso redes niebla búsqueda generalizada refugios, identificar...