Biomass determination of fuelwood trees and bushes of Botswana, Southern Africa

1993 ◽  
Vol 60 (3-4) ◽  
pp. 257-269 ◽  
Author(s):  
T. Tietema
Keyword(s):  
Southern Africa ◽  
Biomass Determination

Biovolume as a tool in biomass determination of Oligochaeta and Chironomidae

1993 ◽  
Vol 29 (1) ◽  
pp. 37-46 ◽  
Author(s):  
HENK SMIT ◽  
ESTI DUDOK HEEL ◽  
SASKIA WIERSMA
Keyword(s):  
Biomass Determination

scholarly journals Effects of Fertilization on Biomass and Macronutrient Content of Eucalyptus urophylla S.T. Blake in Arenized Soil of Pampa Biome

2019 ◽  
pp. 1-10
Author(s):  
Huan Pablo de Souza ◽  
Mauro Valdir Schumacher ◽  
Aline Aparecida Ludvichak ◽  
Dione Richer Momolli ◽  
Claudiney Do Couto Guimarães ◽  
...  
Keyword(s):  
Biomass Accumulation ◽  
Stem Bark ◽  
Total Biomass ◽  
Eucalyptus Urophylla ◽  
Stem Wood ◽  
Randomized Design ◽  
Pampa Biome ◽  
Biomass Determination ◽  
To Receive

The objective of this study was to quantify the biomass and the macronutrient stock in an experiment of fertilization with Eucalyptus urophylla, planted in arenized soil at 12 months-old, in Rio Grande do Sul, Brazil. The experiment had a completely randomized design with five treatments (T1, T2, T3, T4 and T5) with three replications. The treatments T2, T3, T4 and T5, received increasing doses of triple superphosphate. On the other hand, the T1 treatment was the only one to receive natural phosphate in planting. For the determination of the biomass, fifteen trees were felled and separated in the following components: leaves, branches, stem bark, stem wood and roots. Samples of the components were collected and transported to the laboratory for biomass determination and chemical analysis. The total biomass varied between the treatments, with highest biomass accumulation of 6.83 Mg ha-1 occurring in T5. The T1 presented the highest biomass for roots representing 33.4% of the total biomass. The biomass distribution among the different components in the decreasing order was: roots > stem wood > leaves > branches > stem bark, for all the treatments. The treatment with higher doses of fertilizers (T5) presented the highest amount of nutrient accumulation in the total biomass (131.26 kg ha-1). The concentration and accumulation of nutrients presented the following trend K > N > Ca > Mg > P > S. Analyzing the different components of biomass, the highest amounts of nutrients followed the order: leaves > roots > stem wood > branches > stem bark. Fertilization influenced the biomass production of E. urophylla in arenized soil in the Pampa biome, but without significant differences to date (12 months). The leaves had the highest concentration of macronutrients, with the exception of Ca, which was higher in the bark. The K was the element that presented highest accumulation in whole tree. The plantation of eucalyptus with fertilization management may be an alternative for the economic use of arenized soil.

scholarly journals Land en volk in die Areopagusrede (Handelinge 17:22-31)

1992 ◽  
Vol 26 (4) ◽  
Author(s):  
W. C. Opperman
Keyword(s):  
Southern Africa ◽  
Christian Perspective ◽  
The Face ◽  
The Creation

The basic aim of this article is to determine an adequate translation and interpretation of Acts 17:26, and to attempt, by means of basic exegesis and in the light of revelatory history, to supply a Christian perspective on the problem of land and people(s) in Southern Africa. In order to define the possible ‘meanings’ of words and to extract the main revelatory history related to this topic, the syntax and thought structure of this pericope are also analysed. The conclusion arrived at is that the second main thought of the speech, in which the creation of man and nations is described, is contracted in Acts 17:26. The creation and determination of the abode of man and nations are very definite biblical aspects of the revelation of the true God. A very important issue evident in this pericope is that the highest calling of each nation is not in the first place to determine and secure the location or borders of its country, but to seek the face of God within the abode granted by God as He is the creator and upholder of each nation.

scholarly journals Determination of Catechins from Elephantorrhiza elephantina and Pentanisia prunelloides using Voltammetry and UV spectroscopy

2014 ◽  
Vol 9 (1) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Smart J. Mpofu ◽  
Omotayo A. Arotiba ◽  
Lerato Hlekelele ◽  
Derek T. Ndinteh ◽  
Rui W.M. Krause
Keyword(s):  
Medicinal Plants ◽  
Comparative Study ◽  
Southern Africa ◽  
Uv Spectroscopy ◽  
Methanol Extracts ◽  
Vis Spectroscopy ◽  
First Time ◽  
Identification And Quantification

In this work, we report the identification and quantification of catechins by electrochemistry and UV-Vis spectroscopy in Elephantorrhiza elephantina (Fabaceae) and Pentanisia prunelloides (Rubiaceae), both of which are medicinal plants that are widely used in Southern Africa to remedy various ailments. A comparative study of the catechin content as (-)-epicatechin equivalent is reported for the first time, with E. elephantina exhibiting a higher concentration relative to P. prunelloides in both aqueous and methanol extracts.

scholarly journals Occurrence of Endoparasites in Indigenous Zambian Dogs

2016 ◽  
Vol 60 (3) ◽  
pp. 19-23
Author(s):  
M. Bruce-Miller ◽  
M. Goldová
Keyword(s):  
Southern Africa ◽  
Zinc Sulphate ◽  
Gastrointestinal Parasites ◽  
Wet Season ◽  
Dipylidium Caninum ◽  
Faecal Samples ◽  
The Family ◽  
Flotation Method ◽  
Toxascaris Leonina

Abstract This study was conducted in the country of Zambia, Southern Africa, to investigate the occurrence of endo-parasites in indigenous Zambian dogs. Faecal samples were collected from 41 indigenous Zambian dogs from different areas of the Mbabala region in the Southern province of Zambia during the “hot wet” season, although at the time that the samples were collected, the country was experiencing a drought. Faecal samples were analysed using the concentration flotation method with zinc sulphate for the determination of the presence of gastrointestinal parasites. The most prevalent parasites were species from the family Ancylostomatidae (65.0 % infection rate) which followed by: Isospora canis (9.8 %), Dipylidium caninum (4.8 %), and Toxascaris leonina (2.4 %). There were in addition, two cases of co-infections with the family Ancylostomatidae and D. caninum, as well as the family Ancylostomatidae and I. canis.

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