Effect of environmental changes on vegetable and legume yields and nutritional quality

Scheelbeek, Pauline; Bird, Frances A.; Tuomisto, Hanna L.; Green, Rosemary; Harris, Francesca; Joy, Edward J. M.; Chalabi, Zaid; Allen, Elizabeth; Haines, Andy; Dangour, Alan D.

doi:10.1073/pnas.1800442115

Cited by 195 publications

(101 citation statements)

References 24 publications

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“…Reduced availability of other nutritionally relevant crops such as fruits, vegetables, nuts and legumes would also threaten food security, especially from a dietary (or nutrient) diversity perspective. A recent systematic review on the effect of environmental changes on vegetable and legume yields and nutritional quality found that under a business-as-usual scenario, environmental changes are likely to have substantial negative impact on yields [10], in keeping with our findings presented here regarding fruit, nuts and seeds.…”

Section: Comparison With Other Literaturesupporting

confidence: 90%

“…A search of seven databases was carried out in conjunction with a second systematic review evaluating the impact of environmental change on vegetables and legumes [10]. Databases searched were OvidSP MED-LINE, OvidSP EMBASE, EBSCO GreenFILE, Web of Science Core Collection and OvidSP AGRIS: to identify papers on fruits two additional databases were searched: Scopus and OvidSP CAB Abstracts.…”

Section: Search Strategymentioning

confidence: 99%

“…If not tackled by adequate adaptations strategies, these changes threaten to impact food security [2]. Global research efforts, focussing mainly on staple crops [2][3][4][5][6][7][8][9] and more recently vegetables and legumes [10], have demonstrated reduced crop yield and nutrient quality in response to environmental stressors. However, there has, to-date, been little focus on fruits, nuts and seeds, which are an important source of nutrients and are associated with positive health outcomes.…”

Section: Introductionmentioning

confidence: 99%

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The impact of environmental changes on the yield and nutritional quality of fruits, nuts and seeds: a systematic review

Alae-Carew

Nicoleau

Bird

et al. 2020

Environ. Res. Lett.

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Background: Environmental changes are predicted to threaten human health, agricultural production and food security. Whilst their impact has been evaluated for major cereals, legumes and vegetables, no systematic evidence synthesis has been performed to date evaluating impact of environmental change on fruits, nuts and seeds (FN&S)-valuable sources of nutrients and pivotal in reducing risks of non-communicable disease. Methods: We systematically searched seven databases, identifying available published literature evaluating impacts of water availability and salinity, temperature, carbon dioxide (CO 2 ) and ozone (O 3 ) on yields and nutritional quality of FN&S. Doseresponse relationships were assessed and, where possible, mean yield changes relative to baseline conditions were calculated. Results: 81 papers on fruits and 24 papers on nuts and seeds were identified, detailing 582 and 167 experiments respectively. A 50% reduction in water availability and a 3-4dS m −1 increase in water salinity resulted in significant fruit yield reductions (mean yield changes: −20.7% [95%CI −43.1% to −1.7%]; and −28.2% [95%CI −53.0% to −3.4%] respectively). A 75%-100% increase in CO 2 concentrations resulted in positive yield impacts (+37.8%; [95%CI 4.1% to 71.5%]; and 10.1%; [95%CI −30.0% to 50.3%] for fruits and nuts respectively). Evidence on yield impacts of increased O 3 concentrations and elevated temperatures (>25°C) was scarce, but consistently negative. The positive effect of elevated CO 2 levels appeared to attenuate with simultaneous exposure to elevated temperatures. Data on impacts of environmental change on nutritional quality of FN&S were sparse, with mixed results. Discussion: In the absence of adaptation strategies, predicted environmental changes will reduce yields of FN&S. With global intake already well-below WHO recommendations, declining FN&S yields may adversely affect population health. Adaptation strategies and careful agricultural and food system planning will be essential to optimise crop productivity in the context of future environmental changes, thereby supporting and safeguarding sustainable and resilient food systems.

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Section: Comparison With Other Literaturesupporting

confidence: 90%

Section: Search Strategymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The impact of environmental changes on the yield and nutritional quality of fruits, nuts and seeds: a systematic review

Alae-Carew

Nicoleau

Bird

et al. 2020

Environ. Res. Lett.

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“…Reduced consumption of livestock-based products (e.g., meat, eggs, and milk) and reduced food waste have also been demonstrated as effective strategies for alleviating future agricultural land and water requirements, especially in conjunction with liberalized trade [79,92,94]. There are also the impacts of higher CO 2 concentrations on the quality of the nutrients in food [106], indicating a need to link food impacts and mitigation strategies at the global-scale.…”

Section: Agro-economic Modelsmentioning

confidence: 99%

Integrated Solutions for the Water-Energy-Land Nexus: Are Global Models Rising to the Challenge?

Johnson

Burek

Byers

et al. 2019

Water

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Increasing human demands for water, energy, food and materials, are expected to accentuate resource supply challenges over the coming decades. Experience suggests that long-term strategies for a single sector could yield both trade-offs and synergies for other sectors. Thus, long-term transition pathways for linked resource systems should be informed using nexus approaches. Global integrated assessment models can represent the synergies and trade-offs inherent in the exploitation of water, energy and land (WEL) resources, including the impacts of international trade and climate policies. In this study, we review the current state-of-the-science in global integrated assessment modeling with an emphasis on how models have incorporated integrated WEL solutions. A large-scale assessment of the relevant literature was performed using online databases and structured keyword search queries. The results point to the following main opportunities for future research and model development: (1) improving the temporal and spatial resolution of economic models for the energy and water sectors;(2) balancing energy and land requirements across sectors; (3) integrated representation of the role of distribution infrastructure in alleviating resource challenges; (4) modeling of solution impacts on downstream environmental quality; (5) improved representation of the implementation challenges stemming from regional financial and institutional capacity; (6) enabling dynamic multi-sectoral vulnerability and adaptation needs assessment; and (7) the development of fully-coupled assessment frameworks based on consistent, scalable, and regionally-transferable platforms. Improved database management and computational power are needed to address many of these modeling challenges at a global-scale. IntroductionWater, energy and land (WEL) represent fundamental resources needed for human survival and are critical for supporting economic development and ecosystem services, such as flood control, carbon sequestration and biodiversity. Socioeconomic and climate trends are rapidly increasing global demands for WEL resources. Based on the "middle-of-the-road" Shared Socioeconomic Pathway (SSP2) scenario in which population reaches about 9 billion in 2050, food demand is projected to increase on average 74% (59-98%) from 2005 to 2050 [1], primary energy supply will increase on average 92% (81-113%) [2], agricultural land is projected to increase on average 5% (3-7%) [3], and global water demand is projected to increase about 50% [4,5]. Meanwhile, WEL resources are regionally constrained for physical or economic reasons and several global "mega-trends", such as climate change, urbanization, and globalization, are expected to have regional impacts that may either exacerbate or alleviate resource constraints and the associated supply challenges [6]. There is an urgent need to better understand the impacts and vulnerability of human populations and ecosystems to future socioeconomic and climatic change as well as to identify sustainable strategies for m...

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“…These crops also fix nitrogen because of their symbiosis with Rhizobium bacteria, which makes them attractive crops for soil improvement in farming systems 2 . However, increased abiotic stress such as heat, drought and salinity, and high pressure of disease and insect pests under climate change will decrease yield and quality of existing legume varieties 3 .…”

Section: Introductionmentioning

confidence: 99%

Understanding patterns of abiotic and biotic stress resilience to unleash the potential of crop wild relatives for climate-smart legume breeding

Rakha

Tan

et al. 2019

Preprint

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Although new varieties are urgently needed for climate-smart legume production, legume breeding lags behind with cereals and underutilizes wild relatives. This paper provides insights in patterns of abiotic and biotic stress resilience of legume crops and wild relatives to enhance the use and conservation of these genetic resources for climate-smart legume breeding. We focus on Vigna, a pantropical genus with more than 88 taxa including important crops such as cowpea and mung bean. Sources of pest and disease resistance occur in more than 50 percent of the Vigna taxa, which were screened while sources of abiotic stress resilience occur in less than 20 percent of the taxa, which were screened. This difference suggests that Vigna taxa co-evolve with pests and diseases while taxa are more conservative to adapt to climatic changes and salinization. Twenty-two Vigna taxa are poorly conserved in genebanks or not at all. This germplasm is not available for legume breeding and requires urgent germplasm collecting before these taxa extirpate on farm and in the wild. Vigna taxa, which tolerate heat and drought stress are rare compared with taxa, which escape these stresses or tolerate salinity. These rare Vigna taxa should be prioritized for conservation and screening for multifunctional traits of combined abiotic and biotic stress resilience. The high presence of salinity tolerance compared with drought stress tolerance, suggests that Vigna taxa are good at developing salt-tolerant traits compared with drought-tolerant traits. Vigna taxa are therefore of high value for legume production in areas that suffer from salinization.

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Effect of environmental changes on vegetable and legume yields and nutritional quality

Cited by 195 publications

References 24 publications

The impact of environmental changes on the yield and nutritional quality of fruits, nuts and seeds: a systematic review

The impact of environmental changes on the yield and nutritional quality of fruits, nuts and seeds: a systematic review

Integrated Solutions for the Water-Energy-Land Nexus: Are Global Models Rising to the Challenge?

Understanding patterns of abiotic and biotic stress resilience to unleash the potential of crop wild relatives for climate-smart legume breeding

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