scholarly journals Constraints to Vegetable Production Resulting from Pest and Diseases Induced by Climate Change and Globalization: A Review

2017 ◽  
Vol 9 (10) ◽  
pp. 11 ◽  
Author(s):  
Mutondwa M. Phophi ◽  
Paramu L. Mafongoya
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Insect Pests ◽  
Negative Impact ◽  
Climatic Factors ◽  
Smallholder Farmers ◽  
Future Research ◽  
Vegetable Production ◽  
Pests And Diseases ◽  
Exotic Pests

Vegetable production worldwide is constrained by pests and diseases which effects are exacerbated by climate change and variability. Greenhouse gas emissions are also increasing due to poor agricultural practices and other human activities. This will continue to have a negative impact on the prevalence of insect pests and diseases. This review focuses on the climatic factors that impact on insect pests and diseases of vegetable crops. High atmospheric temperatures and elevated carbon dioxide increases pest development, survival of pests and distribution of pest to new areas. The distribution of insect pests and diseases are not due to climate changes only but are also a result of globalisation and poor biosecurity measures at country borders. There is limited information on the distribution of pests and diseases due to globalisation in African countries. New exotic pests will continue to be introduced to countries if biosecurity measures are not improved. Future research must focus on how to manage emerging pests and diseases influenced by high temperatures and carbon dioxide and other climatic conditions which influence pest severity under smallholder farmers in the southern African regions.

scholarly journals Perceptions of Climate Change and Drivers of Insect Pest Outbreaks in Vegetable Crops in Limpopo Province of South Africa

Climate ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 27 ◽  
Author(s):  
Mutondwa Masindi Phophi ◽  
Paramu Mafongoya ◽  
Shenelle Lottering
Keyword(s):  
Climate Change ◽  
South Africa ◽  
Insect Pests ◽  
Climatic Factors ◽  
Smallholder Farmers ◽  
Limpopo Province ◽  
Bivariate Analysis ◽  
Vegetable Production ◽  
Dry Spells ◽  
Pest Outbreaks

Vegetable production is a source of income for smallholder farmers in Limpopo Province, South Africa. Vegetable production is constrained by the negative impacts of climate change and pests. This study assessed farmers’ awareness of climate change, farmers’ knowledge of insect pests and factors that influence insect pests’ prevalence. The data were collected using quantitative and qualitative methods. The data were subjected to descriptive and bivariate analysis. About 84.5% of smallholder farmers were aware of climate change. Late rainfall (24.4%), long dry spells (15%) and increased drought frequency (19.4%) were highlighted as dominant indicators of climate change by farmers. Aphids (22.2%), Bagrada hilaris (12.5%) and Spodoptera frugiperda (10.2%) were the most prevalent insect pests within the Vhembe District. Warmer winters, dry spells and high temperatures were perceived by farmers to influence insect pests’ prevalence within the district. It can be concluded that farmers are aware of climate change and climatic factors influencing pest prevalence within the district. Pest risk maps are needed to improve the preparedness of the government and farmers in controlling insect pests under changing climates.

scholarly journals Minimizing pest and disease risks in uncertain climates: CABI initiatives developing new technologies and tools for outreaching early warning to farmers.

2021 ◽  
Author(s):  
Bryony Taylor ◽  
Jonathan Casey ◽  
Sivapragasam Annamalai ◽  
Elizabeth A. Finch ◽  
Tim Beale ◽  
...  
Keyword(s):  
Climate Change ◽  
Management Practices ◽  
New Technologies ◽  
Negative Impact ◽  
Smallholder Farmers ◽  
Observation Data ◽  
Extreme Temperatures ◽  
Pests And Diseases ◽  
Recent Climate ◽  
The Face

Abstract Recent climate models have projected a global temperature increase of at least 1.5-2°C on present day temperatures, including a high likelihood of an increase in extreme temperatures experienced in inhabited places. Changes to observed precipitation patterns are likely with several regions predicted to experience an increase in heavy precipitation and others likely to experience more drought, and a precipitation deficit. There is a growing body of evidence to suggest these changing climatic conditions affect the distribution and phenology of pests and diseases of agriculture. As ectothermic organisms, arthropod pests and fungal diseases are sensitive to changes in mean temperatures and temperature ranges to which they are exposed, with warmer average conditions likely to increase development rates and more extreme temperatures likely to have a negative impact on development. Models which incorporate climate change projections indicate that pests and diseases may shift or increase their ranges in line with warming temperatures. Smallholder farmers are particularly vulnerable to the effects of climate change, with farmers reporting negative impacts on crop production and needing to change farming practices in response to changing climates. In the face of changeable conditions, traditional pest management practices may not be as effective given the climate change induced changes which may be present in the ecosystems e.g. alteration of tritrophic interactions between pest and natural enemies. This paper gives an overview of current and recent projects where CABI and partners have developed and utilised existing technologies, methodologies and approaches that may help smallholder farmers to receive the necessary information to control pests and diseases in the context of changing climates. First, we cover the application of species distribution models and their benefits in highlighting areas at risk of pest incursion in the future. Second, we cover within season modelling approaches, driven by earth observation data sources to help farmers to make informed decisions on the best time to apply an intervention, in the face of changing within season temperatures. Finally, we report on CABI's activities associated with climate smart agriculture in South East Asia.

scholarly journals Viticulture and Winemaking under Climate Change

Agronomy ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 783 ◽  
Author(s):  
Helder Fraga
Keyword(s):  
Climate Change ◽  
Climatic Factors ◽  
Climate Modeling ◽  
Mitigation Measures ◽  
Future Research ◽  
Special Issue ◽  
Adaptation Measures ◽  
Pronounced Increase ◽  
Berry Quality ◽  
Precipitation Regimes

The importance of viticulture and the winemaking socio-economic sector is acknowledged worldwide. The most renowned winemaking regions show very specific environmental characteristics, where climate usually plays a central role. Considering the strong influence of weather and climatic factors on grapevine yields and berry quality attributes, climate change may indeed significantly impact this crop. Recent-past trends already point to a pronounced increase in the growing season mean temperatures, as well as changes in the precipitation regimes, which has been influencing wine typicity across some of the most renowned winemaking regions worldwide. Moreover, several climate scenarios give evidence of enhanced stress conditions for grapevine growth until the end of the century. Although grapevines have a high resilience, the clear evidence for significant climate change in the upcoming decades urges adaptation and mitigation measures to be taken by the sector stakeholders. To provide hints on the abovementioned issues, we have edited a special issue entitled: “Viticulture and Winemaking under Climate Change”. Contributions from different fields were considered, including crop and climate modeling, and potential adaptation measures against these threats. The current special issue allows the expansion of the scientific knowledge of these particular fields of research, also providing a path for future research.

scholarly journals The fourth generation of urban projects to tackle climate change: a typological proposal

2021 ◽  
Vol 1203 (3) ◽  
pp. 032012
Author(s):  
Gino Perez-Lancellotti ◽  
Marcela Ziede
Keyword(s):  
Climate Change ◽  
Negative Impact ◽  
Mitigation Strategies ◽  
Fourth Generation ◽  
Future Research ◽  
Sea Levels ◽  
Natural Systems ◽  
Rising Sea Levels ◽  
Urban Project ◽  
Adaptation And Mitigation

Abstract Climate change is the major challenge of our humanity and the relationship between climate change and cities has received increasing scholarly attention from governance, urban planning and infrastructure perspectives. However, the scale of the urban project, understood as the operationalization of climate change actions, has been neglected. The current three generations of urban projects are revisited (modern city, morphologic articulation, large urban projects) and a fourth-generation within the context of climate change is identified as missing; it combines adaptation and mitigation strategies for urban projects. While adaptation strategies are oriented to minimizing the negative impact of climate change on rising sea-levels, floods and rivers’ changes through green and blue infrastructures, mitigation strategies are twofold: one oriented to minimizing CO2 gas emissions and the other to reducing the risks of deterioration of natural systems due to human intervention or natural causes. Integrating the four generations, a typology of a 2x2 matrix of urban projects is drawn up. The four quadrants of types of urban projects are explained and accompanied by examples. Potential and desirable shifts between the quadrants are discussed to understand how changes are needed to advance to develop this new generation of urban projects. The paper contributes to expanding our understanding of urban projects in the context of climate change with heuristics purposes for researchers, practitioners and academia, and to prepare public policy makers to encourage the debate of climate change actions of adaptation and mitigation that should be materialized on an urban project scale. Future research may empirically test the typology in different contexts of development.

scholarly journals Climate change impacts on pest ecology and risks to pasture resilience

2021 ◽  
Vol 17 ◽  
Author(s):  
Sarah Mansfield ◽  
Colin Ferguson ◽  
Philippa Gerard ◽  
David Hodges ◽  
John Kean ◽  
...  
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Range Expansion ◽  
Insect Pests ◽  
Climate Change Impacts ◽  
Geographic Range ◽  
Pastoral Systems ◽  
Carbon Dioxide Levels ◽  
Farm System ◽  
Impacts Of Climate Change

It is well understood that damage by insect pests can have serious consequences for pasture resilience. However, the impacts of climate change on pastoral systems, the responses of insect pests, and implications for pest impact mitigation are unclear. This paper reviews pest responses to climate change, including direct impacts such as temperature and carbon dioxide levels, geographic range expansion, sleeper pests, and outbreaks resulting from disturbance such as drought and farm system changes. The paper concludes with a plea for transdisciplinary research into pasture resilience under climate change that has insect pests as an integral component – not as an afterthought.

THE MECHANISMS OF PUBLIC POLICY TO MITIGATE THE NEGATIVE IMPACT ON THE ENVIRONMENT

2021 ◽  
pp. 145-155
Author(s):  
Svetlana Kodaneva ◽  
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Global Economy ◽  
Negative Impact ◽  
National Context ◽  
Industrial Emissions ◽  
Environmentally Responsible Behavior ◽  
Responsible Behavior ◽  
Environmentally Responsible ◽  
State Programs

As the global economy grows, so do greenhouse gas emissions, in particular carbon dioxide, which is considered one of the main causes of climate change. The growing environmental problems determine the urgency of taking operational measures to reduce the negative impact of human activities on the environment. State policy should be aimed at both reducing the level of industrial emissions of pollutants and creating environmentally responsible behavior of residents. The article discusses various mechanisms for implementing relevant state programs, depending on the national context.

Methane in Australian agriculture: current emissions, sources and sinks, and potential mitigation strategies

2015 ◽  
Vol 66 (1) ◽  
pp. 1 ◽  
Author(s):  
Damien Finn ◽  
Ram Dalal ◽  
Athol Klieve
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Plant Biomass ◽  
Methane Flux ◽  
Methane Emissions ◽  
Mitigation Strategies ◽  
Extreme Weather Events ◽  
Future Research ◽  
Sources And Sinks ◽  
Climate Change Drivers

Methane is a potent greenhouse gas with a global warming potential ~28 times that of carbon dioxide. Consequently, sources and sinks that influence the concentration of methane in the atmosphere are of great interest. In Australia, agriculture is the primary source of anthropogenic methane emissions (60.4% of national emissions, or 3 260 kt–1 methane year–1, between 1990 and 2011), and cropping and grazing soils represent Australia’s largest potential terrestrial methane sink. As of 2011, the expansion of agricultural soils, which are ~70% less efficient at consuming methane than undisturbed soils, to 59% of Australia’s land mass (456 Mha) and increasing livestock densities in northern Australia suggest negative implications for national methane flux. Plant biomass burning does not appear to have long-term negative effects on methane flux unless soils are converted for agricultural purposes. Rice cultivation contributes marginally to national methane emissions and this fluctuates depending on water availability. Significant available research into biological, geochemical and agronomic factors has been pertinent for developing effective methane mitigation strategies. We discuss methane-flux feedback mechanisms in relation to climate change drivers such as temperature, atmospheric carbon dioxide and methane concentrations, precipitation and extreme weather events. Future research should focus on quantifying the role of Australian cropping and grazing soils as methane sinks in the national methane budget, linking biodiversity and activity of methane-cycling microbes to environmental factors, and quantifying how a combination of climate change drivers will affect total methane flux in these systems.

scholarly journals Evaluating farmers’ adaptation strategies to climate change: A case study of Kaou local government area, Tahoua State, Niger Republic

2016 ◽  
Vol 8 (3) ◽  
Author(s):  
A. Moussa Tabbo ◽  
Zakou Amadou ◽  
Agada B. Danbaky
Keyword(s):  
Climate Change ◽  
Negative Impact ◽  
Adaptation Strategies ◽  
Small Scale ◽  
Vegetable Production ◽  
Random Utility Theory ◽  
Wild Fruits ◽  
Climate Change Information ◽  
Change Projects ◽  
The Difference

The study discusses local farmers’ strategies of coping with and building resilience against the negative impact of climate change. Information for the discussion was from data collected using a set of structured questionnaires from interviews scheduled with 128 farmers. The questionnaire was based on previous literature and direct reconnaissance interview with farmers, which culminated in 13 strategies used for the study being reported. For each question, respondents were asked to choose their best and worst strategies. Thus, the difference between the best and worst strategies consistent with random utility theory has been used for the modelling. Results show that semi-transhumance, various handicrafts making, rural migration, small-scale vegetable production and small-scale river exploitation were the most important strategies identified, whilst water transport and vending, shifting cultivation, gypsum mining, gathering and trading of wild fruits and edible plants as well as cattle and sheep fattening were the least appreciated strategies identified amongst the farmers facing climate change. These findings are therefore imperative for planning farmers’ capacity-building and resilience against climate change projects to ensure sustainability in the study area.Keywords: Farmers’ adaptation strategies; Climate change resilience; Kaou

The convergence of carbon dioxide emissions: a survey of the empirical literature

2020 ◽  
Vol 47 (7) ◽  
pp. 1757-1785 ◽  
Author(s):  
James E. Payne
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Empirical Studies ◽  
Geographic Region ◽  
Mitigation Strategies ◽  
Empirical Literature ◽  
Future Research ◽  
Content Type ◽  
Change Models

PurposeThis survey of the literature on the convergence of carbon dioxide (CO2) emissions informs researchers on areas for future research by summarizing the countries examined, the types of convergence tested and the methodological approaches undertaken.Design/methodology/approachThis survey examines peer-reviewed empirical studies of CO2 emissions convergence with respect to country coverage and alternative approaches to test for various types of convergence.FindingsFor large multicountry studies, the support for convergence is quite limited. However, studies focused exclusively on a subset of countries defined by income classification, geographic region or institutional structure reveal the finding of convergence is more prevalent. Studies at the subnational level have primarily been in the cases of the US and China with the exception of two studies across industry sectors in Portugal and Sweden.Research limitations/implicationsThis study focuses exclusively on peer-reviewed published studies.Practical implicationsThis study is relevant to the design of mitigation strategies to reduce CO2 emissions and the assumption of convergence underlying climate change models.Social implicationsAs a major component of greenhouse gas emissions, CO2 emissions is of global importance in its impact on the environment and climate change.Originality/valueThis study provides the most recent and comprehensive survey of the empirical literature on the convergence of CO2 emissions.

Methods and uncertainties in bioclimatic envelope modelling under climate change

2006 ◽  
Vol 30 (6) ◽  
pp. 751-777 ◽  
Author(s):  
Risto K. Heikkinen ◽  
Miska Luoto ◽  
Miguel B. Araújo ◽  
Raimo Virkkala ◽  
Wilfried Thuiller ◽  
...  
Keyword(s):  
Climate Change ◽  
Climate Models ◽  
Climatic Factors ◽  
Future Climate Change ◽  
Future Research ◽  
Climate Change Scenarios ◽  
Distribution Models ◽  
Wide Range ◽  
Bioclimatic Modelling ◽  
Bioclimatic Envelope

Potential impacts of projected climate change on biodiversity are often assessed using single-species bioclimatic ‘envelope’models. Such models are a special case of species distribution models in which the current geographical distribution of species is related to climatic variables so to enable projections of distributions under future climate change scenarios. This work reviews a number of critical methodological issues that may lead to uncertainty in predictions from bioclimatic modelling. Particular attention is paid to recent developments of bioclimatic modelling that address some of these issues as well as to the topics where more progress needs to be made. Developing and applying bioclimatic models in a informative way requires good understanding of a wide range of methodologies, including the choice of modelling technique, model validation, collinearity, autocorrelation, biased sampling of explanatory variables, scaling and impacts of non-climatic factors. A key challenge for future research is integrating factors such as land cover, direct CO2 effects, biotic interactions and dispersal mechanisms into species-climate models. We conclude that, although bioclimatic envelope models have a number of important advantages, they need to be applied only when users of models have a thorough understanding of their limitations and uncertainties.

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