Swamps, springs and diatoms: wetlands of the semi-arid Bogoria-Baringo Rift, Kenya

Owen, R. Bernhart; Renaut, Robin W.; Hover, Victoria C.; Ashley, Gail M.; Muasya, A. Muthama

doi:10.1023/b:hydr.0000025057.62967.2c

Cited by 72 publications

(45 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Lake Bogoria, which is located in the centre of the reserve, is a saline alkaline lake that hosts hundreds of thousands of Lesser Flamingos (BroWn 1973;harPer et al 2003). Numerous hot springs and some geysers located near the shore or under the lake surface are active as a result of the volcanic origin of this area (cioni 1992;oWen et al 2004;Mccall 2010). In addition to the alkaline hot springs, there are also a number of warm springs that receive ground water or water of low salinity.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to the alkaline hot springs, there are also a number of warm springs that receive ground water or water of low salinity. The low salinity water discharge is an important water source for the livestock of the local pastoralists (oWen et al 2004). The focus of this study is a member of the cyanobacterial flora of a warm spring located directly on the shoreline of the Lake Bogoria, Kenya.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Desertifilum fontinale sp. nov. (Oscillatoriales, Cyanobacteria) from a warm spring in East Africa, based on conventional and molecular studies.

Dadheech¹,

Mahmoud²,

Kotut³

et al. 2014

Fottea

View full text Add to dashboard Cite

Abstract:Desertifilum is a filamentous cyanobacterium of crusts and biofilms, recently described from the extreme hot and dry Thar Desert in north-western India. A new species was isolated from a warm spring near Lake Bogoria, Kenya and was characterised by light and electron microscopy and phylogenetically using the 16S rRNA gene, beta and alpha subunits including intergenic spacer (cpcBA-IGS) and 16S-23S internal transcribed spacer (ITS). The aquatic habitat of the new material from Kenya revealed a wider distribution of members of this genus. The new taxon was found to be closest to Desertifilum tharense (Oscillatoriales). The separation of the new species described here as D. fontinale sp. nov., using conventional and molecular traits, was based on differences in phenotypic features, 16S-23S ITS sequence and habitat.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Desertifilum fontinale sp. nov. (Oscillatoriales, Cyanobacteria) from a warm spring in East Africa, based on conventional and molecular studies.

Dadheech¹,

Mahmoud²,

Kotut³

et al. 2014

Fottea

View full text Add to dashboard Cite

show abstract

“…Diatoms are sensitive to water quality parameters such as nutrients (Pan and Stevenson 1996, Cooper et al 1999, Lane and Brown 2007, salinity (Taffs 2001, Hicks and Nichol 2007, Wachnicka et al 2011, Nodine and Gaiser 2013, dissolved oxygen (Zhang et al 2011), and pH (Owen et al 2004, Taffs et al 2008. Diatoms are also sensitive to hydrologic parameters such as hydroperiod (Gaiser et al 1998, Mackay et al 2011) and water depth (Finné et al 2010).…”

Section: Diatom-inferred Vs Observed Hydroperiod (A) and Periphyton mentioning

confidence: 99%

“…Robust diatom-based inference models will provide a means for examining both the drivers and biological feedbacks of regulatory variables at a range of spatial scales. Most diatom-based assessments of wetlands have addressed water quality parameters such as nutrients (Pan & Stevenson 1996;Cooper et al 1999;Gaiser et al 2006;Lane & Brown 2007;Velinsky et al 2011;, salinity (Taffs 2001;Hicks & Nichol 2007;Wachnicka et al 2011), dissolved oxygen (Zhang et al 2011, and pH (Owen et al 2004;Taffs et al 2008). Some studies have employed diatoms to assess wetland vegetation (Huvane & Cooper 2001;Gaiser et al 2005a), and several have employed diatom-based assessment of wetland hydrologic characteristics such as hydroperiod (Gaiser et al 1998;Mackay et al 2011).…”

Section: Introductionmentioning

confidence: 99%

“…To date, inference models that reflect biological feedbacks, such as periphyton characteristics, to hydrologic conditions have not been developed. Reconstructions of ecosystem properties using regional inference models were successful for several wetlands (Gaiser et al 1998;Taffs 2001;Owen et al 2004), while other studies used or advocated basin-specific models (Cooper et al 1999;Gaiser et al 2006;). …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mechanisms of Diatom Assembly in a Hydrologically-Managed Subtropical Wetland

Lee¹

View full text Add to dashboard Cite

Geochemical evidence of hydrothermal recharge in Lake Baringo, central Kenya Rift Valley

et al. 2006

View full text Add to dashboard Cite

Lake Baringo, a freshwater lake in the central Kenya Rift Valley, is fed by perennial and ephemeral rivers, direct rainfall, and hot springs on Ol Kokwe Island near the centre of the lake. The lake has no surface outlet, but despite high evaporation rates it maintains dilute waters by subsurface seepage through permeable sediments and faulted lavas. New geochemical analyses (major ions, trace elements) of the river, lake, and hot spring waters and the suspended sediments have been made to determine the main controls of lake water quality. The results show that evaporative concentration and the binary mixing between two end members (rivers and thermal waters) can explain the hydrochemistry of the lake waters. Two zones are recognized from water composition. The southern part of the lake near sites of perennial river inflow is weakly influenced by evaporation, has low total dissolved species (TDS), and has a seasonally variable load of mainly detrital suspended sediments. In contrast, waters of the northern part of the lake show evidence for strong evaporation (TDS of up to eight times inflow). Authigenic clay minerals and calcite may be precipitating from those more concentrated fluids. The subaerial hot-spring waters have a distinctive chemistry and are enriched in some elements that are also present in the lake water. Comparison of the chemical composition of the inflowing surface waters and lake water shows (1) an enrichment of some species (HCO3-, Cl, SO42-, F, Na, B, V, Cr, As, Mo, Ba and U) in the lake, (2) a depletion in SiO2 in the lake, and (3) a possible hydrothermal origin for most F. The rare earth element distribution and the F/Cl and Na/Cl ratios give valuable information on the rate of mixing of the river and hydrothermal fluids in the lake water. Calculations imply that thermal fluids may be seeping upward locally into the lake through grid-faulted lavas, particularly south of Ol Kokwe Island. Copyright © 2006 John Wiley & Sons, Ltd

show abstract

Swamps, springs and diatoms: wetlands of the semi-arid Bogoria-Baringo Rift, Kenya

Cited by 72 publications

References 26 publications

Desertifilum fontinale sp. nov. (Oscillatoriales, Cyanobacteria) from a warm spring in East Africa, based on conventional and molecular studies.

Desertifilum fontinale sp. nov. (Oscillatoriales, Cyanobacteria) from a warm spring in East Africa, based on conventional and molecular studies.

Mechanisms of Diatom Assembly in a Hydrologically-Managed Subtropical Wetland

Geochemical evidence of hydrothermal recharge in Lake Baringo, central Kenya Rift Valley

Contact Info

Product

Resources

About