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Determination of dust deposition and associated nutrients in natural forest and plantation - A case study from the moist semi-deciduous forest zone in Ghana

Breuning-Madsen, Henrik; Lyngsie, Gry LU and Awadzi, Teodore Wola (2017) In Geoderma 285. p.240-246
Abstract

Every year in December to February the dust laden Harmattan blows from Sahara towards southwest to the countries along the east west going coast of the Gulf of Guinea. Only few investigations have quantified external dust deposition in forests and plantations in that region and hereby the nutrient input by dust. This paper investigates three different methods for sampling and quantifying dust deposition in natural forests and plantations in the moist semi-deciduous forest zone in Ghana. The three methods tested were the following: bowls with water, plastic mats with straws and funnels for determining canopy drip. The study shows that the canopy drip method overestimates the external dust deposition due to a significant enrichment of... (More)

Every year in December to February the dust laden Harmattan blows from Sahara towards southwest to the countries along the east west going coast of the Gulf of Guinea. Only few investigations have quantified external dust deposition in forests and plantations in that region and hereby the nutrient input by dust. This paper investigates three different methods for sampling and quantifying dust deposition in natural forests and plantations in the moist semi-deciduous forest zone in Ghana. The three methods tested were the following: bowls with water, plastic mats with straws and funnels for determining canopy drip. The study shows that the canopy drip method overestimates the external dust deposition due to a significant enrichment of organic matter during the throughfall. Therefore, it is necessary to combine the canopy drip method with sampling from outside the forest to determine the external organic matter content in the dust deposited to a forest. The study showed that the dust deposition in the forest and in the rubber and cocoa plantations was 1.5 to 2.0 times bigger than on the plastic mats located outside the forested area and further, that the external nutrient input by dust to the natural forests is very low in the Kade area, only about 0.2 kg ha-1 total P and the readily available Ca, Mg and K are respectively 0.4 kg ha-1, 0.2 kg ha-1 and 0.7 kg ha-1.

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organization
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type
Contribution to journal
publication status
published
subject
keywords
Aeolian transport, dust sampling method, Harmattan dust, nutrients, West Africa
in
Geoderma
volume
285
pages
7 pages
publisher
Elsevier
external identifiers
  • scopus:84991666867
  • wos:000388153100023
ISSN
0016-7061
DOI
10.1016/j.geoderma.2016.10.005
language
English
LU publication?
yes
id
4a0ef37e-3cc3-477a-92e3-6d7ac2165b31
date added to LUP
2017-02-27 09:25:20
date last changed
2018-01-07 11:52:55
@article{4a0ef37e-3cc3-477a-92e3-6d7ac2165b31,
  abstract     = {<p>Every year in December to February the dust laden Harmattan blows from Sahara towards southwest to the countries along the east west going coast of the Gulf of Guinea. Only few investigations have quantified external dust deposition in forests and plantations in that region and hereby the nutrient input by dust. This paper investigates three different methods for sampling and quantifying dust deposition in natural forests and plantations in the moist semi-deciduous forest zone in Ghana. The three methods tested were the following: bowls with water, plastic mats with straws and funnels for determining canopy drip. The study shows that the canopy drip method overestimates the external dust deposition due to a significant enrichment of organic matter during the throughfall. Therefore, it is necessary to combine the canopy drip method with sampling from outside the forest to determine the external organic matter content in the dust deposited to a forest. The study showed that the dust deposition in the forest and in the rubber and cocoa plantations was 1.5 to 2.0 times bigger than on the plastic mats located outside the forested area and further, that the external nutrient input by dust to the natural forests is very low in the Kade area, only about 0.2 kg ha<sup>-1</sup> total P and the readily available Ca, Mg and K are respectively 0.4 kg ha<sup>-1</sup>, 0.2 kg ha<sup>-1</sup> and 0.7 kg ha<sup>-1</sup>.</p>},
  author       = {Breuning-Madsen, Henrik and Lyngsie, Gry and Awadzi, Teodore Wola},
  issn         = {0016-7061},
  keyword      = {Aeolian transport,dust sampling method,Harmattan dust,nutrients,West Africa},
  language     = {eng},
  month        = {01},
  pages        = {240--246},
  publisher    = {Elsevier},
  series       = {Geoderma},
  title        = {Determination of dust deposition and associated nutrients in natural forest and plantation - A case study from the moist semi-deciduous forest zone in Ghana},
  url          = {http://dx.doi.org/10.1016/j.geoderma.2016.10.005},
  volume       = {285},
  year         = {2017},
}