Sahrah Fischer

Dr. Sahrah Fischer

orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 March 2019 in Science of The Total Environment
Verified
Journal Article
Closed access
SFSahrah Fischer
Sahrah Fischer
THThomas Hilger
Thomas Hilger
HPHans-Peter Piepho
Hans-Peter Piepho
IJIrmgard Jordan
Irmgard Jordan
GCGeorg Cadisch
Georg Cadisch

1 May 2020 in Science of The Total Environment
Verified
Journal Article
Closed access
SFSahrah Fischer
Sahrah Fischer
THThomas Hilger
Thomas Hilger
HPHans-Peter Piepho
Hans-Peter Piepho
IJIrmgard Jordan
Irmgard Jordan
Jeninah KarungiJeninah Karungi
Jeninah Karungi
GCGeorg Cadisch
Georg Cadisch

12 June 2020 in Environmental Management
Verified
Journal Article
Open access
PDF file
SFSahrah Fischer
Sahrah Fischer
LJLisa Jäckering
Lisa Jäckering
KKKatja Kehlenbeck
Katja Kehlenbeck
Baobab (Adansonia digitata L.) is a multipurpose, drought resistant, wild fruit tree, endemic to arid and semi-arid lands of Sub-Saharan Africa. Baobab populations have been showing a lack of regeneration, and therefore causes concern for the species survival. This study investigated the state, distribution and use of baobabs in an under-researched population in Kenya, to identify the potential for further use and development of baobab resources. A baobab population was chosen in Taita–Taveta County, covering a sample area of 2015 km2. A systematic stratified transect survey was done to map baobab distribution using 49 transects (0.5 × 3 km each). The diameter at breast height and other indicators were measured on all baobabs in the transects to assess population status and health. A household survey (n = 46) and focus group discussions (n = 12) were done following the transect survey to gain an idea on the uses and distribution of baobab. In total, 432 baobab trees were measured and recorded in the research area of 2015 km2. The baobabs grew in two clusters (i.e., areas with a baobab density of ≥0.08 baobabs/ha). Both clusters showed rejuvenating populations. The main factors identified by the respondents, positively and negatively influencing baobab distribution were environmental factors, wildlife, human impact and commercial value. The study area shows a great potential for baobab to become an important part of the diet, due to its current use as an emergency food during food scarce times, and the relatively healthy and stable rejuvenating populations.

29 April 2023 in Agriculture
Verified
Journal Article
Open access
PDF file
TPTaewan Park
Taewan Park
SFSahrah Fischer
Sahrah Fischer
CLChristine Lambert
Christine Lambert
THThomas Hilger
Thomas Hilger
IJIrmgard Jordan
Irmgard Jordan
GCGeorg Cadisch
Georg Cadisch
Green leafy vegetables, such as Vigna unguiculata, Brassica oleraceae, and Solanum scabrum, are important sources of vitamins A, B1, and C. Although vitamin deficiencies considerably affect human health, not much is known about the effects of changing soil and climate conditions on vegetable vitamin concentrations. The effects of high or low soil fertility and three drought intensities (75%, 50%, and 25% pot capacity) on three plant species were analysed (n = 48 pots) in a greenhouse trial. The fresh yield was reduced in all the vegetables as a result of lower soil fertility during a severe drought. The vitamin concentrations increased with increasing drought stress in some species. Regardless, the total vitamin yields showed a net decrease due to the significant biomass loss. Changes in vitamin concentrations as a result of a degrading environment and increasing climate change events are an important factor to be considered for food composition calculations and nutrient balances, particularly due to the consequences on human health, and should therefore be considered in agricultural trials.


14 July 2021 in Nutrients
Verified
Journal Article
Open access
PDF file
EKEleonore Kretz
Eleonore Kretz
IJIrmgard Jordan
Irmgard Jordan
AIAnnet Itaru
Annet Itaru
MGM. Gracia Glas
M. Gracia Glas
SFSahrah Fischer
Sahrah Fischer
LWLydiah Maruti Waswa
Lydiah Maruti Waswa
Fruits are micronutrient-rich sources which are often underrepresented in children’s diets. More insights into the determinants of children’s fruit consumption are needed to improve nutrition education in Teso South Sub-County, Kenya. A multiphase mixed method study was applied among 48 farm households with children 0–8 years of age. A market survey together with focus group discussions were used to design a formative research approach including qualitative and quantitative data collection methods. The unavailability of fruits and the inability to plant fruit trees in the homesteads were the main challenges to improve fruit consumption behaviour, although a number of different fruit species were available on the market or in households. Perceived shortage of fruits, financial constraints to purchase fruits and taste were important barriers. Fruits as snacks given between meals was perceived as helpful to satisfy children. The mean number of fruit trees in the homesteads was positively associated with fruit consumption. Field trials are needed to test how best fruit trees within home gardens and on farms can be included, acknowledging limited space and constraints of households with young children. This should be combined with nutrition education programs addressing perceptions about the social and nutrient value of fruits for children.