scholarly journals Coral reefs as a source of climate-active aerosols

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e10023
Author(s):  
Rebecca L. Jackson ◽  
Albert J. Gabric ◽  
Roger Cropp

We review the evidence for bio-regulation by coral reefs of local climate through stress-induced emissions of aerosol precursors, such as dimethylsulfide. This is an issue that goes to the core of the coral ecosystem’s ability to maintain homeostasis in the face of increasing climate change impacts and other anthropogenic pressures. We examine this through an analysis of data on aerosol emissions by corals of the Great Barrier Reef, Australia. We focus on the relationship with local stressors, such as surface irradiance levels and sea surface temperature, both before and after notable coral bleaching events. We conclude that coral reefs may be able to regulate their exposure to environmental stressors through modification of the optical properties of the atmosphere, however this ability may be impaired as climate change intensifies.

2020 ◽  
Vol 12 (1) ◽  
pp. 47-73
Author(s):  
Mary Ann Alua ◽  
Kenneth Peprah ◽  
Godwin Thomas Wedam Achana

 Water is precious and vulnerable simultaneously in the face of climate change impacts. Farmers respond differently to climate change impacts depending on available resources. The aim of this study is to investigate the influence of access to water on smallholder farmers’ coping strategies to climate change impacts in the semi-arid zone (Aw climate). Using a mixed method approach, 6 focus group discussions, 10 key informant interviews and 148 questionnaires were administered to farmers. Quantitative data were analysed and presented using descriptive statistics whilst qualitative data were transcribed and discussed alongside. The study found that in coping with local climate change, farmers’ incomes are dependent on availability of water to supplement rainfall. Therefore, communities closer to the waters of the Tono irrigation dam have greater advantage over other communities that rely on waters from dugouts and wells. Also, income gained from farming is complemented with supplementary incomes from activities such as petty trading, carpentry and sale of farmers’ labour on other farms. Availability of water, particularly, during the dry season is a determinant factor of success in terms of good farm produce, income and better coping with local climate change impacts. To help these water-stressed farmers, the provision of sustainable sources of water is inevitable.  The government and smallholders need to work together to solve the problem.


2020 ◽  
Vol 2 (8) ◽  
pp. 101-110
Author(s):  
N. N. ILYSHEVA ◽  
◽  
E. V. KARANINA ◽  
G. P. LEDKOV ◽  
E. V. BALDESKU ◽  
...  

The article deals with the problem of achieving sustainable development. The purpose of this study is to reveal the relationship between the components of sustainable development, taking into account the involvement of indigenous peoples in nature conservation. Climate change makes achieving sustainable development more difficult. Indigenous peoples are the first to feel the effects of climate change and play an important role in the environmental monitoring of their places of residence. The natural environment is the basis of life for indigenous peoples, and biological resources are the main source of food security. In the future, the importance of bioresources will increase, which is why economic development cannot be considered independently. It is assumed that the components of resilience are interrelated and influence each other. To identify this relationship, a model for the correlation of sustainable development components was developed. The model is based on the methods of correlation analysis and allows to determine the tightness of the relationship between economic development and its ecological footprint in the face of climate change. The correlation model was tested on the statistical materials of state reports on the environmental situation in the Khanty-Mansiysk Autonomous Okrug – Yugra. The approbation revealed a strong positive relationship between two components of sustainable development of the region: economy and ecology.


Diversity ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 251
Author(s):  
Adi Zweifler (Zvifler) ◽  
Michael O’Leary ◽  
Kyle Morgan ◽  
Nicola K. Browne

Increasing evidence suggests that coral reefs exposed to elevated turbidity may be more resilient to climate change impacts and serve as an important conservation hotspot. However, logistical difficulties in studying turbid environments have led to poor representation of these reef types within the scientific literature, with studies using different methods and definitions to characterize turbid reefs. Here we review the geological origins and growth histories of turbid reefs from the Holocene (past), their current ecological and environmental states (present), and their potential responses and resilience to increasing local and global pressures (future). We classify turbid reefs using new descriptors based on their turbidity regime (persistent, fluctuating, transitional) and sources of sediment input (natural versus anthropogenic). Further, by comparing the composition, function and resilience of two of the most studied turbid reefs, Paluma Shoals Reef Complex, Australia (natural turbidity) and Singapore reefs (anthropogenic turbidity), we found them to be two distinct types of turbid reefs with different conservation status. As the geographic range of turbid reefs is expected to increase due to local and global stressors, improving our understanding of their responses to environmental change will be central to global coral reef conservation efforts.


Author(s):  
O. J. Kehinde ◽  
A. T. Adeboyejo

Susceptibility to ill health among aged people had been linked with climate change impacts in rapidly urbanising cities. Therefore, this study evaluates to the vulnerability of aged people to the health impacts of climate change in Ibadan, Nigeria. Data on clinically diagnosed climate related diseases (CRDs) (2000 – 2014) among aged people (>50 years) and temperature and rainfall parameters (1970 – 2007) in Ibadan were obtained and projected to year 2050. Also, the relationship between the climatic parameters and incidence of the five most prevalent CRDs were analysed using multiple regression. The increasing trend of mean maximum temperature (r = 0.47) and rainfall (r = 0.15) is associated with incidences of hypertension (34.4%), respiratory diseases (21.2%) and diarrhoea (14.3%) among aged people (> 60 years), mostly male folk (67.2%). The linear composite of disease communalities extracted 84.0% variance of the data set with the following component scores: skin disease (0.98), hypertension (0.96), respiratory disease (0.92), diarrhoea (0.89) and malaria (0.45). Further, CRDs (R2 = 27%, p = 0.012) in Ibadan among aged people could be significantly attributed to influences of climatic parameters. The study suggests building aged peoples’ resilience to emanating impacts through health and nutritional improvement programs, and re-introduction of neighbourhood parks and gardens.


Author(s):  
Laith Abdullah Alaryan ◽  
Ayman Ahmad Abu Haija ◽  
Ali Mahmoud Alrabei

The application of fair value has started early in Jordan, which was a bone of contention among supporters and opponents. This study came to provide empirical evidence on the relationship between fair value and financial manipulation. The study extracted data from 45 companies’ annual reports during a ten-year period (1997- 2006) five years before and after the application of fair value to examine the relationship among the application of fair value accounting and the presence of manipulation in financial statements. The result indicates that the number of firms that manipulated information in the financial statements had increased after applying fair value accounting. The results have policy implications, one of which is that the Jordanian government should either enact new regulations or modify the current regulations in the face of an increasing number of manipulations by firms after the application of fair value accounting. These regulations are needed to increase both the managements’ and accountants’ responsibility towards the firms and to enhance the business ethics of the organization.


2021 ◽  
Author(s):  
Lena Fuldauer ◽  
Scott Thacker ◽  
Robyn Haggis ◽  
Francesco Fuso Nerini ◽  
Robert Nicholls ◽  
...  

Abstract The international community has committed to achieve 17 Sustainable Development Goals (SDGs) by 2030 and to enhance climate action under the Paris Agreement. Yet achievement of the SDGs is already threatened by climate-change impacts. Here we show that further adaptation this decade is urgently required to safeguard 68% of SDG targets against acute and chronic threats from climate change. We analyse how the relationship between SDG targets and climate-change impacts is mediated by ecosystems and socio-economic sectors, which provides a framework for targeting adaptation. Adaptation of wetlands, rivers, cropland, construction, water, electricity and housing in the most vulnerable countries should be a global priority to safeguard sustainable development by 2030. We have applied our systems framework at the national scale in Saint Lucia and Ghana, which is helping to align National Adaptation Plans with the SDGs, thus ensuring that adaptation is contributing to, rather than detracting from, sustainable development.


Author(s):  
S. Momtaz ◽  
M. Asaduzzaman ◽  
Z. Kabir

Abstract The purpose of this chapter is to understand the vulnerability of women's livelihoods to climate change impacts in Bangladesh. Data were collected through a survey of 150 randomly selected women from a sample of households. Focus group discussions, key informant interviews, participant observations, and a transect walk, provided supporting information to substantiate the household surveys. The chapter first outlines the theoretical foundation on which the research is based. This is followed by examining women's vulnerability in the study area. The chapter then describes women's coping strategies in the face of climate change-induced disasters. The chapter further explores women's adaptive capacity through the examination of their access to various services. It ends with a set of recommendations for policy makers in order to improve the situation of women's vulnerability.


Nutrients ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 2010 ◽  
Author(s):  
Caroline J. Smith

Predicted global climate change, including rising average temperatures, increasing airborne pollution, and ultraviolet radiation exposure, presents multiple environmental stressors contributing to increased morbidity and mortality. Extreme temperatures and more frequent and severe heat events will increase the risk of heat-related illness and associated complications in vulnerable populations, including infants and children. Historically, children have been viewed to possess inferior thermoregulatory capabilities, owing to lower sweat rates and higher core temperature responses compared to adults. Accumulating evidence counters this notion, with limited child–adult differences in thermoregulation evident during mild and moderate heat exposure, with increased risk of heat illness only at environmental extremes. In the context of predicted global climate change, extreme environmental temperatures will be encountered more frequently, placing children at increased risk. Thermoregulatory and overall physiological strain in high temperatures may be further exacerbated by exposure to/presence of physiological and environmental stressors including pollution, ultraviolet radiation, obesity, diabetes, associated comorbidities, and polypharmacy that are more commonly occurring at younger ages. The aim of this review is to revisit fundamental differences in child–adult thermoregulation in the face of these multifaceted climate challenges, address emerging concerns, and emphasize risk reduction strategies for the health and performance of children in the heat.


2012 ◽  
Vol 174-177 ◽  
pp. 2270-2277 ◽  
Author(s):  
Yan Qiang Wei ◽  
Yi Ping Fang

Climate change has a significant impact on the environment and is expected to increase the frequency and intensity of nature disaster and create new hazards (e.g., rise in sea level). As densely populated and resource-intensive regions, cities will experience the enhanced heat island effect, flooding or water scarcity as a result of extremes in rainfall, and severe storms may devastate entire settlements. In the face of a projected rise in the frequency and severity of nature disasters due to socio-economic developments and climate change the question arises of how to adapt to and ameliorate impacts of natural disasters. This paper provides some insights into this subject from an urban planning perspective and takes a review on the aspects of climate change impacts on urban economics, based on the practices of mitigation and adaptation experiences, some strategies of adaptation are provided and discussed at last.


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