scholarly journals Potential of breadfruit cultivation to contribute to climate-resilient low latitude food systems

2021 ◽  
Author(s):  
Lucy Yang ◽  
Nyree Zerega ◽  
Daniel E Horton
Keyword(s):  
Food Security ◽  
Food Systems ◽  
Pacific Islands ◽  
Emission Scenario ◽  
Sub Saharan Africa ◽  
Low Latitude ◽  
Changing Climate ◽  
High Emission ◽  
Stabilization Scenario ◽  
High Emission Scenario

The number of people in food crisis around the world is increasing, exacerbated by the challenges of COVID-19 and a rapidly changing climate. Major crop yields are projected to decrease in low-latitude regions due to anthropogenic climate change, making tropical and sub-tropical food systems particularly vulnerable to climate shocks. Increased cultivation of breadfruit (Artocarpus altilis), often categorized as a neglected and underutilized species (NUS), has been suggested as an agricultural adaptation pathway for food insecure tropical and subtropical regions, due to its potential to enhance climate resilience and overall sustainability of low-latitude agricultural systems. To better understand breadfruit's cultivation suitability and geographic range in current and future climates, we employ a diverse set of observations and models to delineate the current climatically viable breadfruit range, and assess the climatically viable breadfruit range in the future (2061-2080) under stabilization and high emission scenarios. We find that the area of suitable breadfruit range within the tropics and subtropics is projected to decrease approximately 4.4% in the stabilization scenario and approximately 4.5% in the high emission scenario. In Southeast Asia and the Pacific Islands, yield quality and consistency show minimal decreases under the high emission scenario, with increases in total suitable area under both scenarios. In contrast, in Latin America and the Caribbean, the current range of breadfruit suitability is projected to contract approximately 10.1-11.5% (stabilization-high emission). Present and future model suitability outputs suggest that opportunities to successfully expand breadfruit cultivation over the next several decades exist in sub-Saharan Africa, where food insecurity is coincidentally high. However, in all regions, high emission scenario conditions reduce the overall consistency and quality of breadfruit yields compared to the stabilization scenario. Our results have the potential to inform global food security adaptation planning and highlight breadfruit as an ideal NUS to incorporate in food security adaptation strategies in a changing climate.

scholarly journals IMPROVING QUALITY OF LIFE THROUGH AGRICULTURAL AND NUTRITIONAL POLICY IN SUB-SAHARAN AFRICA: AN INFORMED PLATFORM FOR POST-2015 DEVELOPMENT

2015 ◽  
Vol 10 ◽  
Author(s):  
Eliot Martin
Keyword(s):  
Food Security ◽  
Food Systems ◽  
Cost Effective ◽  
Sub Saharan Africa ◽  
Infrastructure Development ◽  
The Past ◽  
Sub Saharan ◽  
Government Reforms ◽  
Inadequate Nutrition ◽  
Agricultural Diversity

A food security based approach to development did not develop as quickly in Sub-Saharan Africa in the 1970s as it had in Asia, but over the past decade and a half, especially, a cumulative wealth of evidence has led to conclusions that suggest developmental efforts focusing on food systems and nutrition are the most cost-effective and far reaching of efforts to combat poverty and improve health. While hunger indicators have improved over the years, malnutrition remains the most significant challenge to development in the region. The poverty trap caused by malnutrition, and the broader impacts of inadequate nutrition, mean that policy targeting agriculture and nutrition have higher benefits-to-cost than any other policy measures. In analysis of research and developments in agriculture, nutrition, and human development over the past 40 years, the key areas of focus which are most pragmatic for future developmental policy pushes in Sub-Saharan Africa are funding and supporting sustainable intensification of agricultural productivity, promoting women’s economic involvement, coordinating multi-pronged programs centered around food security which include smart input subsides and safety nets, urging the dissemination of agricultural diversity in addition to furthering funding and research in biofortification and improved crops, instituting equitable infrastructure development, working towards the removal of barriers to trade, and accepting accountability through national government reforms in the region.

scholarly journals The Impact of Covid-19 on Livelihoods and Food Security

2021 ◽  
Author(s):  
Thompson, John Thompson, John ◽  
Njuguna Ndung’u ◽  
Miguel Albacete ◽  
Abid Q. Suleri ◽  
Junaid Zahid ◽  
...  
Keyword(s):  
Food Security ◽  
Food Systems ◽  
Social Protection ◽  
Food System ◽  
Small And Medium Enterprises ◽  
Food Prices ◽  
Sub Saharan Africa ◽  
Policy And Practice ◽  
The Impact ◽  
Equity Core

Studies of livelihoods and food systems since the start of the global pandemic in 2020 have shown a consistent pattern: the primary risks to food and livelihood security are at the household level. Covid-19 is having a major impact on households’ production and access to quality, nutritious food, due to losses of income, combined with increasing food prices, and restrictions to movements of people, inputs and products. The studies included in this Research for Policy and Practice Report and supported by the Covid-19 Responses for Equity (CORE) Programme span several continents and are coordinated by leading research organisations with a detailed understanding of local food system dynamics and associated equity and livelihood issues in their regions: (1) the impact of the Covid-19 pandemic on livelihoods in sub-Saharan Africa; (2) supporting small and medium enterprises, food security, and evolving social protection mechanisms to deal with Covid-19 in Pakistan; and (3) impact of Covid-19 on family farming and food security in Latin America: evidence-based public policy responses.

scholarly journals Agriculture and food systems in sub-Saharan Africa in a 4 ° C+ world

2011 ◽  
Vol 369 (1934) ◽  
pp. 117-136 ◽  
Author(s):  
Philip K. Thornton ◽  
Peter G. Jones ◽  
Polly J. Ericksen ◽  
Andrew J. Challinor
Keyword(s):  
Food Security ◽  
Food Systems ◽  
Agricultural Development ◽  
Agricultural Practices ◽  
Commodity Price ◽  
Adaptation Strategies ◽  
Policy Support ◽  
Sub Saharan Africa ◽  
Sub Saharan ◽  
Agriculture And Food

Agricultural development in sub-Saharan Africa faces daunting challenges, which climate change and increasing climate variability will compound in vulnerable areas. The impacts of a changing climate on agricultural production in a world that warms by 4 ° C or more are likely to be severe in places. The livelihoods of many croppers and livestock keepers in Africa are associated with diversity of options. The changes in crop and livestock production that are likely to result in a 4 ° C+ world will diminish the options available to most smallholders. In such a world, current crop and livestock varieties and agricultural practices will often be inadequate, and food security will be more difficult to achieve because of commodity price increases and local production shortfalls. While adaptation strategies exist, considerable institutional and policy support will be needed to implement them successfully on the scale required. Even in the 2 ° C+ world that appears inevitable, planning for and implementing successful adaptation strategies are critical if agricultural growth in the region is to occur, food security be achieved and household livelihoods be enhanced. As part of this effort, better understanding of the critical thresholds in global and African food systems requires urgent research.

scholarly journals Simulation of the Potential Distribution of the Glacier Based on Maximum Entropy Model in the Tianshan Mountains, China

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1541
Author(s):  
Tongxia Wang ◽  
Zhengyong Zhang ◽  
Lin Liu ◽  
Zhongqin Li ◽  
Puyu Wang ◽  
...  
Keyword(s):  
Climate Change ◽  
Distribution Pattern ◽  
Potential Distribution ◽  
Emission Scenario ◽  
Tianshan Mountains ◽  
Glacier Area ◽  
Maximum Entropy Model ◽  
Entropy Model ◽  
High Emission ◽  
High Emission Scenario

Under the background of global climate change, the variation in the spatial distribution and ice volume of mountain glaciers have a profound influence on regional economic development and ecological security. The development of glaciers is like biological succession; when climate change approaches or exceeds the threshold of suitable conditions for glacier development, it will lead to changes in potential distribution pattern. Therefore, from the perspective of the "biological" characteristics of glaciers, it is a beneficial exploration and attempt in the field of glaciology to explore its potential distribution law with the help of the niche model. The maximum entropy model (MaxEnt) can explain the environmental conditions suitable for the survival of things by analyzing the mathematical characteristics and distribution laws of samples in space. According to glacier samples and the geographical environment data screened by correlation analysis and iterative calculation, the potential distribution pattern of Tianshan glaciers in China in reference years (1970–2000) was simulated by MaxEnt. This paper describes the contribution of geographical environmental factors to distribution of glaciers in Tianshan Mountains, quantifies the threshold range of factors affecting the suitable habitat of glaciers, and predicts the area variation and distribution pattern of glaciers under different climate scenarios (SSP1-2.6, SSP5-8.5) in the future (2040–2060, 2080–2100). The results show that the MaxEnt model has good adaptability to simulate the distribution of glaciers. The spatial heterogeneity of potential distribution of glaciers is caused by the spatio-temporal differences of hydrothermal combination and topographic conditions. Among the environmental variables, precipitation during the wettest month, altitude, annual mean temperature, and temperature seasonality have more significant effects on the potential distribution of glaciers. There is significant spatial heterogeneity in the potential distribution of glaciers in different watersheds, altitudes, and aspects. From the forecast results of glacier in various climatic scenarios in the future, about 18.16–27.62% of the total reference year glacier area are in an alternating change of melting and accumulation, among which few glaciers are increasing, but this has not changed the overall retreat trend of glaciers in the study area. Under the low emission scenario, the glacier area of the Tianshan Mountains in China decreased by 18.18% and 23.73% respectively in the middle and end of the 21st century compared with the reference years and decreased by 20.04% and 27.63%, respectively, under the high emission scenario, which showed that the extent of glacier retreat is more intense under the high emission scenario. Our study offers momentous theoretical value and practical significance for enriching and expanding the theories and analytical methods of the glacier change.

scholarly journals Gender Roles, Implications for Water, Land, and Food Security in a Changing Climate: A Systematic Review

2021 ◽  
Vol 5 ◽  
Author(s):  
Henry Bikwibili Tantoh ◽  
Tracey T. J. M. McKay ◽  
Felix Ekwabena Donkor ◽  
Mulala Danny Simatele
Keyword(s):  
Systematic Review ◽  
Food Security ◽  
Gender Roles ◽  
Rural Women ◽  
Policy Development ◽  
Sub Saharan Africa ◽  
Gender Inequalities ◽  
Top Down ◽  
Changing Climate ◽  
Sub Saharan

Water and land are vital resources essential to ensuring sustainable and productive rural economies. They are also essential for safeguarding food security and socio-economic development. In spite of this, the concept of water-land-food (WLF) security nexus has generally been examined from a top-down manner with women mostly disenfranchised in the access and management of water and land in particular. Concurrently, risks linked with climate crisis aggravate gender inequalities. The limited access to resources, restricted formal rights through top-down management exacerbates the vulnerability of poor rural women. Furthermore, policy development procedures follow a sectoral approach with no account of interrelationship and interdependence between the sectors. This, directly and indirectly limits the stewardship of natural resources and mitigation of the effects of climate change. This study, therefore, examines gender roles and their implications for water, land, and food security in a changing climate through an integrative systematic review of literature in Sub-Saharan Africa. It further explains the importance to consider the nexus in adaptation. Food security and sustainable livelihoods could be ensured if women can freely and adequately access land and participate in decision-making processes.

scholarly journals Prioritizing Achievable Goals for Food Security in the Developing World

2021 ◽  
pp. 11-25
Author(s):  
Sanjaya Rajaram ◽  
Maarten van Ginkel
Keyword(s):  
Food Security ◽  
Food Systems ◽  
Food System ◽  
Systems Approach ◽  
Climate Change Impacts ◽  
Sub Saharan Africa ◽  
Rapid Responses ◽  
Sub Saharan ◽  
New Research ◽  
The Impact

Many solutions have been proposed to address food security. We present here a prioritized set of actions achievable within the next 2–10 years. By taking a systems approach we follow the impact pathway backwards starting from the needs and desires of the end-users to eventually define the research agenda that will exactly address those targeted solutions with positive impacts. The following actions emerge as high-priority and achievable in the near future: new research tools to study food systems; dis-aggregated intra-household surveys to reveal within-family inequalities in food access; increased scientific consensus on climate change impacts in sub-Saharan Africa; rapid response measures to address sudden emergencies, such as capturing excess rainfall water; financial tools to enable rapid responses with recovery measures afterwards; consideration of restrictions that excess heat and humidity impose on human productivity; secure land ownership and tenure rights to encourage long-term agricultural investment; mechanization at all stages along the food system.

scholarly journals Large Losses in Glacier Area and Water Availability by the End of Twenty-First Century under High Emission Scenario, Satluj Basin, Himalaya

2019 ◽  
Vol 116 (10) ◽  
pp. 1721 ◽  
Author(s):  
Veena Prasad ◽  
Anil V. Kulkarni ◽  
S. Pradeep ◽  
S. Pratibha ◽  
Sayli A. Tawde ◽  
...  
Keyword(s):  
Water Availability ◽  
Emission Scenario ◽  
First Century ◽  
Glacier Area ◽  
High Emission ◽  
Twenty First Century ◽  
High Emission Scenario

scholarly journals Estimation of future changes in photovoltaic potential in Australia due to climate change

2021 ◽  
Vol 16 (11) ◽  
pp. 114034
Author(s):  
Shukla Poddar ◽  
Jason P Evans ◽  
Merlinde Kay ◽  
Abhnil Prasad ◽  
Stephen Bremner
Keyword(s):  
Power Generation ◽  
Wind Speed ◽  
Emission Scenario ◽  
Radiation Temperature ◽  
Pv Systems ◽  
The Future ◽  
High Emission ◽  
High Emission Scenario ◽  
Far Future

Abstract Solar photovoltaic (PV) energy is one of the fastest growing renewable energy sources globally. However, the dependency of PV generation on climatological factors such as the intensity of radiation, temperature, wind speed, cloud cover, etc can impact future power generation capacity. Considering the future large-scale deployment of PV systems, accurate climate information is essential for PV site selection, stable grid regulation, planning and energy output projections. In this study, the long-term changes in the future PV potential are estimated over Australia using regional climate projections for the near-future (2020–2039) and far-future (2060–2079) periods under a high emission scenario that projects 3.4 °C warming by 2100. The effects of projected changes in shortwave downwelling radiation, temperature and wind speed on the future performance of PV systems over Australia is also examined. Results indicate decline in the future PV potential over most of the continent due to reduced insolation and increased temperature. Northern coastal Australia experiences negligible increase in PV potential during the far future period due to increase in radiation and wind speed in that region. On further investigation, we find that the cell temperatures are projected to increase in the future under a high emission scenario (2.5 °C by 2079), resulting in increased degradation and risks of failure. The elevated cell temperatures significantly contribute to cell efficiency losses, that are expected to increase in the future (6–13 d yr−1 for multi-crystalline silicon cells) mostly around Western and central Australia indicating further reductions in PV power generation. Therefore, long-term PV power projections can help understand the variations in future power generation and identify regions where PV systems will be highly susceptible to losses in Australia.

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