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5 results on '"Heckelei, Thomas"'

3. Quantifying sustainable intensification of agriculture: The contribution of metrics and modelling

Author

Biobased Economy, Energy and Resources, Mouratiadou, Ioanna, Latka, Catharina, van der Hilst, Floor, Müller, Christoph, Berges, Regine, Bodirsky, Benjamin Leon, Ewert, Frank, Faye, Babacar, Heckelei, Thomas, Hoffmann, Munir, Lehtonen, Heikki, Lorite, Ignacio Jesus, Nendel, Claas, Palosuo, Taru, Rodríguez, Alfredo, Rötter, Reimund Paul, Ruiz-Ramos, Margarita, Stella, Tommaso, Webber, Heidi, Wicke, Birka, Biobased Economy, Energy and Resources, Mouratiadou, Ioanna, Latka, Catharina, van der Hilst, Floor, Müller, Christoph, Berges, Regine, Bodirsky, Benjamin Leon, Ewert, Frank, Faye, Babacar, Heckelei, Thomas, Hoffmann, Munir, Lehtonen, Heikki, Lorite, Ignacio Jesus, Nendel, Claas, Palosuo, Taru, Rodríguez, Alfredo, Rötter, Reimund Paul, Ruiz-Ramos, Margarita, Stella, Tommaso, Webber, Heidi, and Wicke, Birka

Published
2021

4. Multi-scale resilience of a communal rangeland system in South Africa

Author

Rasch, Sebastian, Heckelei, Thomas, Storm, Hugo, Oomen, Roelof, Naumann, Christiane, Rasch, Sebastian, Heckelei, Thomas, Storm, Hugo, Oomen, Roelof, and Naumann, Christiane

Abstract

Resilience has either been assessed on system or individual scale so far. Ignoring the other scale may potentially change the interpretation of resilience in socio-ecological systems (SES). Thus, this paper argues that the co-evolution of both resiliencies must be studied to capture multi-scale complexity. We attempt to close this gap by assessing resilience at both scales of a village community in Thaba Nchu, South Africa. Villagers use a commonly managed rangeland for beef cattle production. An agent based model of household interaction coupled with a biophysical model of the rangeland measures the resiliencies of the SES towards a shock, a stress and a policy intervention. Currently, the SES remains in a stable attractor in terms of SES resilience. Household resilience, however, degrades in a process of structural change. A drought scenario shows improved SES resilience but structural change at household level accelerated. An increase in the number absentee herders increases the likelihood for SES collapse by eroding social embededdness. Finally, an introduced basic income grant demonstrates that the SES is able to cope with an increased number of appropriators. However, interaction of the policy intervention with an exogenous stress translates into an increased probability of SES decoupling. (C) 2016 Elsevier B.V. All rights reserved.

Published
2017

5. COVID-19 in rural Africa: Food access disruptions, food insecurity and coping strategies in Kenya, Namibia, and Tanzania.

Author

Tabe-Ojong MPJ, Gebrekidan BH, Nshakira-Rukundo E, Börner J, and Heckelei T

Abstract

This study assesses the extent of COVID-19-related food insecurity in Kenya, Tanzania, and Namibia. Using the Household Food Insecurity Access Scale, we measure food insecurity in various dimensions and document several food access disruptions associated with the COVID-19 pandemic between April and July 2020. Furthermore, we assess the association of COVID-19 countermeasures with the adoption of various strategies in line with the coping strategies index. We rely on a unique phone survey that followed households who participated in an earlier field-based survey. First, through Ordinary Least-Squares and Probit regressions, we show a strong and statistically significant association between COVID-19 countermeasures and food access disruptions and food insecurity in each of the three countries. We then use a multivariate probit regression model to understand the use of the various coping strategies, including reducing food intake, increasing food search, and relying more on less nutritious foods. We provide evidence on the complementarities and trade-offs in using these coping strategies. COVID-19 and related lockdown measures coincided with a deleterious increase in food insecurity in rural Africa., (© 2022 The Authors. Agricultural Economics published by Wiley Periodicals LLC on behalf of International Association of Agricultural Economists.)

Published
2022
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