Tripathi, H, Kunin, WE, Smith, HE et al. (8 more authors) (2022) Climate-Smart Agriculture and trade-offs with biodiversity and crop yield. Frontiers in Sustainable Food Systems, 6. 868870. ISSN 2571-581X
Abstract
Biophysical evaluations of climate-smart agriculture (CSA) often overlook the potential interactions with and implications for biodiversity and ecosystem services, which are important determinants of food system resilience and sustainability. Drawing on a case study in the East Usambara Mountains, Tanzania, we compare the impacts of CSA with other agricultural management practices on invertebrate pest and natural enemy diversity, and the associated effects on crop damage and crop yield. We found that the most common CSA practices in the region, terracing and trenching with live and compost mulches, provided the best outcomes for crop production, pest suppression and agricultural income. However, greater diversity of pests was observed when neighboring fields planted improved crop varieties, suggesting that the use of improved varieties by farmers creates increased vulnerability to pest damage among neighboring farmers that used local varieties. Also, greater natural enemy diversity was found when neighboring fields were either intercropped or left fallow highlighting spatial flows of ecosystem services between fields. Landcover heterogeneity was positively correlated with pest diversity, whilst landcover richness was positively associated with higher pest volume, highlighting the importance of landscape characteristics in pest and natural enemy dynamics. Finally, we found that crop damage was most severe when pest communities had low species richness, suggesting that a small number of key crop pests contribute to most yield losses. Our findings illustrate that those varied combinations of agricultural management practices lead to heterogeneous biodiversity outcomes and trade-offs, and highlight the importance of local management, neighborhood effects and landscape characteristics. CSA evaluations must therefore look beyond productivity as a measure for success, as trade-offs with invertebrate biodiversity, food production, and environmental sustainability often interact and feedback in complex and unexpected ways.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2022 Tripathi, Kunin, Smith, Sallu, Maurice, Machera, Davies, Florence, Eze, Yamdeu and Sait. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
Keywords: | crop pests, natural enemies, food security, neighborhood effects, East Usambara Mountains, Tanzania, Africa |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) > School of Biology (Leeds) The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Sustainability Research Institute (SRI) (Leeds) |
Funding Information: | Funder Grant number BBSRC (Biotechnology & Biological Sciences Research Council) BB/P027784/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 18 May 2022 10:05 |
Last Modified: | 18 Aug 2023 14:57 |
Published Version: | https://www.frontiersin.org/articles/10.3389/fsufs... |
Status: | Published |
Publisher: | Frontiers Media |
Identification Number: | 10.3389/fsufs.2022.868870 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:186941 |
Download
Filename: Climate-Smart Agriculture and trade-offs with biodiversity and crop yield .pdf
Licence: CC-BY 4.0