School of Biological, Physical, Mathematics & Actuarial Sciences: Recent submissions
Now showing items 181-200 of 254
-
The norm attainability of some elementary operators
(Applied Mathematics E-Notes, 2012) -
Soil water availability and capacity of nitrogen accumulation influence variations of intrinsic water use efficiency in rice
(Elsevier, 2016)Leaf intrinsic water use efficiency (WUEi) coupling maximum assimilation rate (Amax) and transpirable water lost via stomatal conductance (gsc) has been gaining increasing concern in sustainable crop production. Factors ... -
Patterns of CO2 exchange and productivity of the herbaceous vegetation and trees in a humid savanna in western Kenya
(Springer Science+Business Media Dordrecht, 2015)Factors governing the dynamics between woody and herbaceous vegetation in the savanna are of ecological interest since they determine ecosystem productivity and stability. Field measurements were conducted in a humid savanna ... -
The Afro-alpine dwarf shrub Helichrysum citrispinum favours understorey plants through microclimate amelioration
(Taylor & Francis, 2015)Background: Positive plant–plant interactions similar to specialised plant growth forms are potential strategies to overcome the environmental harshness of Afro-alpine ecosystems. However, knowledge about plant–plant ... -
Supplement understanding of the relative importance of biophysical factors in determination of photosynthetic capacity and photosynthetic productivity in rice ecosystems
(Elsevier, 2016)Extensive variation in gross primary production (GPP) among growing seasons in rice ecosystems, which has previously been reported, may be caused by a number of biophysical factors. Two field-based studies, one on Oryza ... -
Quantification of ecosystem carbon exchange characteristics in a dominant subtropical evergreen forest ecosystem
(Korean Meteorological Society and Springer Netherlands, 2012)CO2 fluxes were measured continuously for three years (2003–2005) using the eddy covariance technique for the canopy layer with a height of 27 m above the ground in a dominant subtropical evergreen forest in Dinghushan, ... -
Water use by a warm-temperate deciduous forest under the influence of the Asian monsoon: contributions of the overstory and understory to forest water use
(Elsevier, 2013)The warm temperate deciduous forests in Asia have a relatively dense understory, hence, it is imperative that we understand the dynamics of transpiration in both the overstory (E O) and understory (E U) of forest stands ... -
Conditional variations in temperature response of photosynthesis, mesophyll and stomatal control of water use in rice and winter wheat
(2016)Environmental responses of photosynthesis and CO2 diffusive conductance as fundamental information for photosynthesis-transpiration coupled model have been increasingly concerned while are still research areas with unanswered ... -
Leaf and Ecosystem Gas Exchange Responses of Buffel Grass-Dominated Grassland to Summer Precipitation
(Elsevier, 2015)stomatal conductance -
Environmental controls on growing-season sap flow density of Quercus serrata Thunb in a temperate deciduous forest of Korea
(Ecological Society of Korea, 2012)Sap flux density (SFD) measurements were used, in combination with morphological characteristics of trees and forest structure, to calculate whole-tree transpiration, stand transpiration (St) and mean canopy stomatal ... -
Inherently delayed germination of Elgon Teak (Olea capensis) seeds in Kakamega Forest, Kenya
(Kamla-Raj, 2010)Olea capensis in Kakamega forest does not show any evidence of natural regeneration under the parent trees. This study sought to determine the factors that may be responsible for the lack of natural regeneration under the ... -
Nutritional and developmental influences on components of rice crop light use efficiency
(Elsevier, 2016)Light use efficiency (LUE) plays a vital role in determination of crop biomass and yield. Important components of LUE, i.e. canopy structure, nitrogen distribution, photosynthetic capacity and CO2 diffusion conductance ... -
Drought responses of Arrhenatherum elatius grown in plant assemblages of varying species richness
(Elsevier, 2011)Evidence exists that plant community diversity influences productivity of individual members and their resistance and resilience during and after perturbations. We simulated drought within the long-term EVENT experimental ... -
Effects of land use practices on soil organic carbon, nitrogen and phosphorus in river Nzoia drainage basin, Kenya
(Science Publishing Group, 2015-06-18)Land use activities along River Nzoia Drainage Basin, Kenya, include cultivation along the river banks, over grazing, deforestation, draining of wetlands for horticulture, harvesting of sand and brick-making. These activities ... -
Carbon dioxide exchange and its regulation in the main agro-ecosystems of Haean catchment in South Korea
(Elsevier, 2015)The Asian agricultural landscape, which accounts for approximately 12.6% of the world’s agricultural land, is highly heterogeneous due to the multicultural cropping system. Information regarding CO2 exchange and carbon (C) ... -
Impacts of selective logging on population structure and dynamics of a canopy tree (Oleacapensis) in Kakamega forest
(African journal of Ecology, 2010-08-03)This study assessed the impacts of logging on the population structure and dynamics of Elgon teak (Olea capensis), a canopy dominant in Kakamega forest. The objective was to ascertain and determine the regeneration status ... -
Sensitivity of peatland herbaceous vegetation to vapor pressure deficit influences net ecosystem CO2 exchange
(Society of Wetland Scientists, 2012)Mountain peatlands in the temperate regions represent a small proportion of the global peatland resource, but play a unique, although less recognized role in the regional water and biogeochemical cycles. We conducted leaf ... -
Stand characteristics and water use at two elevations in a sub-tropical evergreen forest in southern China
(Elsevier, 2014)The humid evergreen monsoon forests in China and other parts of Asia contribute significantly to the global and regional atmospheric circulation and hydrological cycle. The forests are, however, changing in structure due ... -
Socioeconomic factors influencing dependence of households on non-timber forest products in South Nandi Forest, Kenya
(Journal of Economics and Sustainable Development, 2018)Forests are some of the key natural assets that provide a wide range of goods and services to forest adjacent communities. However, there is inadequate information on the factors that influence community members’ level of ... -
Soil properties along a gradient from hillslopes to the savanna plains in the Lambwe valley, Kenya
(Elsevier, 2015)Changes in land use and management strongly affect the physical and chemical properties of soils and their ecological functions. Especially, regions in East Africa have experienced dramatic land use changes in the past, ...
