Wildlife-water quality interactions in the Serengeti National Park, Tanzania

摘要: Summary Surveys of water quality in the surface waters Serengeti National Park were undertaken both wet and dry seasons 1996. Most rivers ponded, with ponds having aflushing time 1 month season zero flushing season. pH values varied spatially from extremely alkaline conditions (pH>10) southern plains to acidic northern region (pH=5·9). In at end salinity was high (5‐17‰) while there abundant zebras wildebeest had started migrate away, a finding suggesting excessive may be trigger initiating annual migration. heavily eutrophicated as result animal dung. As result, dissolved oxygen concentration near surfacefluctuated widely between 200% saturation, smaller occurring deeper column. Stirring mechanical aeration by hippos, crocodiles mammals crossing prevented formation anoxic conditions. The stress measurably lessened wetland-fringed bodies offiltering. Light penetration (§10 cm) saline flocculation enhanced bacteria vegetation detritus, elsewhere euphotic zone less than cm thick generally inhospitable aquatic life. discontinuity wooded savanna grassland coincides occurrence alkaline,