Soil Erosion and Sediment Transport in the Morogoro River Catchment, Tanzania

Rapp, Anders; Axelsson, Valter; Berry, Len; Murray-Rust, Dave

doi:10.1080/04353676.1972.11879863

Cited by 24 publications

(10 citation statements)

References 7 publications

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“…To assess suspended sediment concentrations, stream water samples were taken using a hand-held depth-integrating sampler, based on a design by Finlayson (1981), or a point-integrating sampler (at low flows) based on a design by Rapp et al (1972). Sixty-three onelitre samples were collected over a wide range of flow conditions.…”

Section: Field and Laboratory Techniquesmentioning

confidence: 99%

Suspended sediment production in a suburban tropical basin (Lubumbashi, Zaire)

Lootens

Lumbu

1986

Hydrological Sciences Journal

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A study of suspended sediment transport in the 8.5 km 2 River Lubwe catchment was carried out during the wet season [1983][1984]. The suspended sediment yield was estimated using the suspended-sediment rating curve technique and detailed observations of 10 runoff events. The River Lubwe is characterized by periodic high magnitude floods, during which the bulk of the load is transported. The total suspended load for the hydrological year 1983-1984 is estimated at 108 t, representing -2 -1 a sediment yield of 12,7 t km year ,

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Section: Field and Laboratory Techniquesmentioning

confidence: 99%

Suspended sediment production in a suburban tropical basin (Lubumbashi, Zaire)

Lootens

Lumbu

1986

Hydrological Sciences Journal

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“…Wetland hydro geomorphology is modified by wetting and drying cycles, herbivores (Laws, 1968;MurrayRust, 1972;McCarthy et al, 1998;Deocampo, 2002), and anthropogenic modifications (Murray-Rust, 1972;Rapp et al, 1972;Payton et al, 1992). Hydrology, topography, pedology, lithology, vegetation, and land-use types and intensities (Poesen et al, 2010) control surface channeling, uphill gullying and erosion.…”

Section: Paleoenvironmental Prospects In Semi-arid Amboselimentioning

confidence: 99%

Pollen, People and Place: Multidisciplinary Perspectives on Ecosystem Change at Amboseli, Kenya

et al. 2018

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This study presents a multidisciplinary perspective for understanding environmental change and emerging socio-ecological interactions across the Amboseli region of southwestern Kenya. We focus on late Holocene (<5,000 cal yr. BP) changes and continuities reconstructed from sedimentary, archeological, historical records and socio-ecological models. We utilize multi-disciplinary approaches to understand environmental-ecosystem-social interactions over the longue durée and use this to simulate different land use scenarios supporting conservation and sustainable livelihoods using a socio-ecological model. Today the semi-arid Amboseli landscape supports a large livestock and wildlife population, sustained by a wide variety of plants and extensive rangelands regulated by seasonal rainfall and human activity. Our data provide insight into how large-scale and long-term interactions of climate, people, livestock, wildlife and external connections have shaped the ecosystems across the Amboseli landscape. Environmental conditions were dry between ∼5,000 and 2,000 cal yr. BP, followed by two wet periods at ∼2,100-1,500 and 1,400-800 cal yr. BP with short dry periods; the most recent centuries were characterized by variable climate with alternative dry and wet phases with high spatial heterogeneity. Most evident in paleo and historical records is the changing woody to grass cover ratio, driven by changes in climate and fire regimes entwined with fluctuating elephant, cattle and wild ungulate populations moderated by human activity, including elephant ivory trade intensification. Archeological perspectives on the occupation of different groups (hunter-gatherers, pastoralists, and farmers) in Amboseli region and the relationships between them are discussed. An overview of the known history of humans and elephants, expanding networks of trade, and the arrival and integration of metallurgy, livestock and domesticated crops in the wider region is provided. In recent decades, increased runoff and flooding have resulted in the expansion of wetlands and a reduction of woody vegetation, compounding problems created by increased enclosure and privatization of these landscapes. However, most Githumbi et al.Long-Term Multidisciplinary Perspectives at Amboseli, Kenya of the wetlands outside of the protected area are drying up because of the intensified water extraction by the communities surrounding the National Park and on the adjacent mountains areas, who have increased in numbers, become sedentary and diversified land use around the wetlands.

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“…One would note that most of the previous sediment yield estimates studies in Tanzania and the region at large were catchment specific. The results could not be transferred easily to other hydrologic similar catchments (Rapp et al, 1972;Mulengera and Payton, 1999;Mulengera, 2008;Ndomba, 2007Ndomba, , 2010. In order to estimate catchment yield researchers were forced to use uncertain factor such as sediment delivery ratio (Ndomba et al, 2009).…”

mentioning

confidence: 83%

“…The estimation tools used were either complex for operational and wider application or data intensive (Ndomba et al 2008). In some cases due to limitation in data the developed Sediment yield predictive tools could not be validated (Rapp et al, 1972;Lawrence et al, 2004). As acknowledged by Faraji (1995) and others, at present, there is very scanty knowledge about reservoir sedimentation in Tanzania.…”

mentioning

confidence: 99%