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Responses of ecosystem carbon dioxide fluxes to soil moisture fluctuations in a moist Kenyan savanna

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dc.contributor.author DO Otieno, GO K'Otuto, JN Maina, Y Kuzyakov, JC Onyango
dc.date.accessioned 2020-08-31T08:56:18Z
dc.date.available 2020-08-31T08:56:18Z
dc.date.issued 2010-11-01
dc.identifier.uri https://repository.maseno.ac.ke/handle/123456789/2608
dc.description.abstract Measurements were conducted within a fence-exclosure between February 2008 and July 2009 to investigate the influence of soil moisture on ecosystem CO₂ fluxes in a Themeda triandra-dominated grassland of a humid Kenyan savanna. Rainout shelters were constructed to reduce ambient rainfall by 0%, 10% and 20% respectively to attain variable soil water content (SWC) during plant growth. SWC within the top 30 cm layer, above-ground biomass, soil and plant nitrogen (N) concentrations were assessed monthly alongside CO₂ fluxes. Net ecosystem CO₂ exchange (NEE) and ecosystem respiration (R eco ) were measured with closed chambers while carbon (C) partitioning during the wet and dry seasons were assessed through pulse ¹³C labelling. There were significant seasonal and between plot differences in SWC, above-ground biomass, canopy light utilization efficiency (α), CO₂ … en_US
dc.publisher Cambridge University Press en_US
dc.subject 813C, Africa, biomass, CO2 chambers, ecosystem respiration, gross primary production, humid savanna, net ecosystem exchange, nitrogen, soil moisture, en_US
dc.title Responses of ecosystem carbon dioxide fluxes to soil moisture fluctuations in a moist Kenyan savanna en_US
dc.type Article en_US


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