Date (Publication)

2019-04-16

Citation identifier

https://catalogue.ceh.ac.uk/id/024c5a61-5114-41a6-93b8-e3fb4d24622b

Citation identifier

doi: / 10.5285/024c5a61-5114-41a6-93b8-e3fb4d24622b

Other citation details

Smith, J., Hallett, P., Nayak, D., Boke, S., Habte, M., Yakob, G., Rivington, M., Phimister, E. (2019). Biophysical measurements from Ethiopia's Awassa region during the drought and subsequent floods of 2015-2016. NERC Environmental Information Data Centre 10.5285/024c5a61-5114-41a6-93b8-e3fb4d24622b

Point of contact

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Environmental Information Data Centre		info@eidc.ac.uk	Custodian
NERC Environmental Information Data Centre		info@eidc.ac.uk	Publisher
University of Aberdeen	Smith, J.	jo.smith@abdn.ac.uk	Author
University of Aberdeen	Hallett, P.	paul.hallett@abdn.ac.uk	Author
University of Aberdeen	Nayak, D.	d.nayak@abdn.ac.uk	Author
Southern Agricultural Research Institute, Ethiopia	Boke, S.	abboshiferaw@gmail.com	Author
Southern Agricultural Research Institute, Ethiopia	Habte, M.	mulerhab2006@yahoo.ca	Author
Southern Agricultural Research Institute, Ethiopia	Yakob, G.	getahunyakob@gmail.com	Author
The James Hutton Institute	Rivington, M.	Mike.Rivington@hutton.ac.uk	Author
University of Aberdeen	Phimister, E.	e.phimister@abdn.ac.uk	Author
University of Aberdeen	Smith, J.	jo.smith@abdn.ac.uk	Point of contact

Keywords

• NE/P004830/1

• BREAD

• Soil water

• fertility zones within the household

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no limitations

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This resource is available under the terms of the Open Government Licence

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© Natural Environment Research Council

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If you reuse this data, you should cite: Smith, J., Hallett, P., Nayak, D., Boke, S., Habte, M., Yakob, G., Rivington, M., Phimister, E. (2019). Biophysical measurements from Ethiopia's Awassa region during the drought and subsequent floods of 2015-2016. NERC Environmental Information Data Centre https://doi.org/10.5285/024c5a61-5114-41a6-93b8-e3fb4d24622b

Spatial representation type

Text, table

Language

English

Character set

UTF8

Topic category

• Biota

Begin date

2015-01-01

End date

2016-12-31

Unique resource identifier

OSGB 1936 / British National Grid

Distribution format

Name	Version
Comma-separated values (CSV)

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Environmental Information Data Centre		info@eidc.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://data-package.ceh.ac.uk/sd/024c5a61-5114-41a6-93b8-e3fb4d24622b.zip	Supporting information

OnLine resource

Protocol	Linkage	Name
	https://data-package.ceh.ac.uk/data/024c5a61-5114-41a6-93b8-e3fb4d24622b	Download the data

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Dataset

Other

dataset

Statement

The biophysical measurements were collected from farmers' fields in Halaba District near Hawassa (SNPPR, Ethiopia), after the drought of 2015-2016. Combined with the data provided by the ALTER project (deposited on the EIDC), this provides measurements of soil carbon (C), nitrogen (N) and water characteristics before and after the drought. Soil cores were collected from fields classed as "home", "near" and "far" from the homestead. This corresponds to fields at increasing distance from the household, but does not equate to a set distance; it is more a reflection of the typical land uses in the fields. Measurements are provided at the surface (0-20cm) and below the plough layer (20-50cm). Measurements were collected from fields belonging to farmers with different wealth status (poor medium and rich) in four kebeles (parishes); Eighteen farms were sampled in each kebele. Percent N and percent C in the soil were measured by CNS elemental analyser, Soil pH was measured using a pH meter, 1:5 in CaCl2. Mineral N measurements include nitrate, nitrite and ammonium in μmol per g soil. Nitrate and nitrite were determined by measuring absorbance over a period of 5 hours at a wavelength of 540nm. Ammonium was determined using the indophenol method by measuring absorbance for 30 minutes using a 620 nm wavelength. Soil moisture measurements include the soil moisture content when sampled and at -10 kPa (% by weight). It was not possible to obtain intact cores from Ethiopia or to conduct analysis in country due to equipment availability. Therefore, disturbed soil was repacked into collars and soils were saturated for 48 hours (some were hydrophobic) and then dried to -10 kPa matric potential using a tension table. This potential was selected to represent field capacity due to the sandy nature of this soil. Particle size and aggregate stability were measured for Asore and Lay Arisho only. The percent silt, sand and clay were determined by Laser-diffraction analysis (LDA). Aggregate stability was determined following the wet-sieving method. Bulk density measurements were not taken. However, pedotransfer functions have been derived from the ALTER measurements that allow bulk density to be determined from soil texture and C content.

Metadata

File identifier

024c5a61-5114-41a6-93b8-e3fb4d24622b XML

Metadata language

English

Character set

8859 Part 1

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2025-11-13T16:21:15

Metadata standard name

UK GEMINI

Metadata standard version

2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Environmental Information Data Centre		info@eidc.ac.uk	Point of contact