Global Warming and Tea Production—The Bibliometric View on a Newly Emerging Research Topic

Marx, Werner; Haunschild, Robin; Bornmann, Lutz

doi:10.3390/cli5030046

Cited by 40 publications

(21 citation statements)

References 31 publications

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“…We conducted a bibliometric review to identify the underlying network linkages in published literature using the VOSviewer software. Bibliometric techniques have been used to explore research trends in fields such as molecular research [23], transplant medicine [24], climate science [25] and even medical tourism [18]. Policy researchers have likewise used these methods to examine the literature on policy implementation [26] and policy learning [27], research in health policy [28] and the policy sciences [29,30], and the evolution of science and technology policies [31].…”

Section: Discussionmentioning

confidence: 99%

Where is the policy? A bibliometric analysis of the state of policy research on medical tourism

Virani

Wellstead

Howlett

2020

glob health res policy

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Background: It is imperative that researchers studying medical tourism connect their work with policy, so that its real-world challenges can be better understood, and more effectively addressed. This article gauges the scope and evolution of policy thinking in medical tourism research through a bibliometric review of published academic literature, to establish the extent to which researchers apply public policy theories and frameworks in their investigation of medical tourism, or consider the policy imperatives of their work. Methods: A Boolean search of the Web of Science (WoS) Core Collection was performed to identify policy-related publications on medical tourism. We analyzed the results using bibliometrics and a data visualization software called VOSviewer to identify patterns in knowledge production and underlying network linkages in policy research on the subject. Results: Our findings suggest that only a small proportion of medical tourism research explicitly addresses policy issues or applies policy paradigms in their study approach. Field-specialized journals serving practitioners publish less research as compared to interdisciplinary social and health policy journals. Moreover, there are significant geographical and disciplinary disparities in the policy-orientation of research, and a predilection towards select policy areas such as reproductive and transplant tourism to the neglect of more holistic governance and health system considerations. Conclusion: This article is a call to action for greater engagement by policy scholars on medical tourism, and for health researchers to more explicitly consider how their research might contribute to the understanding and resolution of contemporary policy challenges of medical tourism. Failure to clearly and consistently make the policy connection is a lost opportunity for researchers to frame the public debate, and influence policy thinking on medical tourism.

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Section: Discussionmentioning

confidence: 99%

Where is the policy? A bibliometric analysis of the state of policy research on medical tourism

Virani

Wellstead

Howlett

2020

glob health res policy

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“…Marx et al (2017) identified 14 articles highlighting that shifts in rainfall and solar radiation influence tea yields and quality with implications for farmer livelihoods. For example, Biggs et al (2018) demonstrate that climate change is impacting farmer livelihoods across four major tea-growing regions of Assam, India.…”

Section: Introductionmentioning

confidence: 99%

Environmental Factors Variably Impact Tea Secondary Metabolites in the Context of Climate Change

et al. 2019

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Climate change is impacting food and beverage crops around the world with implications for environmental and human well-being. While numerous studies have examined climate change effects on crop yields, relatively few studies have examined effects on crop quality (concentrations of nutrients, minerals, and secondary metabolites). This review article employs a culturally relevant beverage crop, tea ( Camelia sinensis ), as a lens to examine environmental effects linked to climate change on the directionality of crop quality. Our systematic review identified 86 articles as relevant to the review question. Findings provide evidence that shifts in seasonality, water stress, geography, light factors, altitude, herbivory and microbes, temperature, and soil factors that are linked to climate change can result in both increases and decreases up to 50% in secondary metabolites. A gap was found regarding evidence on the direct effects of carbon dioxide on tea quality, highlighting a critical research area for future study. While this systematic review provides evidence that multiple environmental parameters are impacting tea quality, the directionality and magnitude of these impacts is not clear with contradictory evidence between studies likely due to confounding factors including variation in tea variety, cultivar, specific environmental and agricultural management conditions, and differences in research methods. The environmental factors with the most consistent evidence in this systematic review were seasonality and water stress with 14 out of 18 studies (78%) demonstrating a decrease in concentrations of phenolic compounds or their bioactivity with a seasonal shift from the spring and /or first tea harvest to other seasons and seven out of 10 studies (70%) showing an increase in levels of phenolic compounds or their bioactivity with drought stress. Herbivory and soil fertility were two of the variables that showed the greatest contradictory evidence on tea quality. Both herbivory and soil fertility are variables which farmers have the greatest control over, pointing to the importance of agricultural management for climate mitigation and adaptation. The development of evidence-based management strategies and crop breeding programs for resilient cultivars are called for to mitigate climate impacts on crop quality and overall risk in agricultural and food systems.

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“…In view of the significance of accurately modelling tea species' responses to a changing climate, numerous studies have been devoted to individual country assessments. Alarming evidence of climate change in the tea-growing areas of Sri Lanka, Kenya, India and China are attributed to the rising temperature, variability in rainfall, and increasing incidences of extreme events [9,22]. Using climate model projections, Jayasinghe and Kumar [23] found that regions of Sri Lanka that have been best suited for growing tea will undergo a suitability decline of about 10.5% over the course of the next 30 to 50 years.…”

Section: Introductionmentioning

confidence: 99%

Climate Change May Imperil Tea Production in the Four Major Tea Producers According to Climate Prediction Models

Jayasinghe

Kumar

2020

Agronomy

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The threat of accelerating climate change on species distribution now and in the future is a topic of increasing research interest. However, little work has been undertaken to assess how shifting climates will affect the suitability of tea cultivation. Therefore, we used MaxEnt modelling to project the impact of current and future climatic scenarios on the potential distribution of tea across the four tea-producing countries of China, India, Kenya and Sri Lanka. Projections were made for the years 2050 and 2070 with three Representative Concentration Pathways (RCPs) using seven bioclimatic predictors under three global circulation models (GCMs). The current and future habitat suitability for tea predicted by the models produced a high accuracy rate, with high areas under the receiver operating characteristic curve (AUCs) for all tested RCPs under the three GCMs for the four countries. The mean true skill statistic (TSS) values for tea in Sri Lanka, Kenya, India and China were 0.80, 0.91, 0.91, and 0.74, respectively. The kappa values (k) of the current and future models for all four countries ranged from 0.40 to 0.75, which indicates that the overall performance of the model was good. The precipitation seasonality and annual precipitation were found to be the most influential variables in Sri Lanka and India, respectively, while annual mean temperature was the most effective contributor for determining the suitability of habitat for tea in Kenya and China. An important proviso is that some existing tea-growing areas will face reduced suitability for future tea cultivation suggesting that by 2050 there will be a drastic reduction in the optimal suitability by averages of 26.2%, 14%, and 4.7% in Kenya, Sri Lanka and China, respectively. The optimal suitability will be reduced by 15.1%, 28.6% and 2.6% in Kenya, Sri Lanka and China, respectively, by 2070. India displays an advantage in projected future climates as it gains optimal suitability areas of 15% by 2050 and 25% by 2070.

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Global Warming and Tea Production—The Bibliometric View on a Newly Emerging Research Topic

Cited by 40 publications

References 31 publications

Where is the policy? A bibliometric analysis of the state of policy research on medical tourism

Where is the policy? A bibliometric analysis of the state of policy research on medical tourism

Environmental Factors Variably Impact Tea Secondary Metabolites in the Context of Climate Change

Climate Change May Imperil Tea Production in the Four Major Tea Producers According to Climate Prediction Models

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