Upstream land-use negatively affects river flow dynamics in the Serengeti National Park
نویسندگان
چکیده
In the Greater Serengeti-Mara ecosystem, with Serengeti National Park (SNP) at its core, people and wildlife are strongly dependent on water supply that has a strong seasonal inter-annual variability. The Mara River, only perennial river in SNP, number of small streams originate from outside SNP before flowing through it. those watersheds increasing grazing pressure livestock, deforestation, irrigation other land uses affect flows subsequently have impacts wildlife. We quantified changes since 1970s discharge dynamics. found baseflow recession period for Mbalageti River remained unchanged 70 days, which is natural system inside SNP. By contrast it decreased 100 days to 16 present coinciding increased commercial-scale Kenya extract reaches This will result zero flow if proposed dams built. observed high flash floods prolonged periods draining livestock grazed watersheds, where severe major erosion prevails results gully formation. eroded sediment expected silt dry out scattered season holes an important source drinkable during season. It appears likely future risk, this consequences Ecohydrology-based solutions catchment scale urgently needed reduce degradation while ensuring sustainable provision.
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ژورنال
عنوان ژورنال: Ecohydrology and Hydrobiology
سال: 2021
ISSN: ['1642-3593', '2080-3397']
DOI: https://doi.org/10.1016/j.ecohyd.2020.12.004