scholarly journals A Comparison of Microplastic in Fish From Australia and Fiji

2021 ◽  
Vol 8 ◽  
Author(s):  
Nina Wootton ◽  
Marta Ferreira ◽  
Patrick Reis-Santos ◽  
Bronwyn M. Gillanders

Awareness surrounding plastic pollution has increased significantly in the past decade, leading to concerns on potential adverse effects on biota, including the consumption of microplastic by fish. Globally, plastic has been found in many species of fish, but little research has been undertaken in the southern hemisphere. We assessed the abundance and type of plastic in fish captured and sold for human consumption in Australia and Fiji. Fish (goatfish, sea mullet, paddletail, and common coral trout) had their gastrointestinal tracts dissected and microplastic quantified under a microscope. Plastic polymer types were confirmed using μ-FTIR. In Australia, plastic was found in 61.6% of fish gastrointestinal tracts, while in Fiji, 35.3% of fish had plastic. Fish from Australia had almost double the amount of plastic on average than fish caught in Fiji, with 1.58 (± 0.23) pieces per fish in Australia compared to 0.86 (± 0.14) in fish caught in Fiji. The types of plastic differed between countries, with fibers comprising 83.6% of microplastic pieces in fish from Australia whereas 50% of microplastic found in fish from Fiji was film. Polyolefin was the most abundant polymer type in both fibers from Australia and film from Fiji. We hypothesize variations in abundance and plastic type are a reflection of the population density and coastal geomorphology, but may also be a result of legislation and waste management strategies in the two countries. This work adds evidence to the pervasive presence of plastic in fish gastrointestinal tracts, reinforcing the urgent need for efficient plastic waste management, but also a better understanding of the impacts of microplastic on marine biota.

2020 ◽  
Author(s):  
Nina Gnann ◽  
Shungu Garaba ◽  
Oliver Zielinski

<p> Plastic pollution has a big impact on living organisms. At the same time, plastics are everywhere in our daily life. For example, plastic is used in packaging, construction of buildings, cars, electronics, agriculture and many other fields. In fact, plastic production has been increasing rapidly since the 1950s. However, plastic waste management strategies have not adapted accordingly to these rising amounts, which end up in the blue and green planet. Unfortunately, for developing nations it is even more complicated and strategies are still developing. Here we investigate the possibilities of plastic waste detection in Cambodia focusing on cities, rivers and coastal areas. Very fine geo-spatial resolution Red-Green-Blue (RGB) drone imagery was captured over regions of interest in Phnom Penh, Sihanoukville and Siem Reap. To this date, techniques of detecting plastic litter are based on RGB imagery analyses, generating descriptors such as colour, shape, size and form. However, we believe by adding infrared wavebands additional descriptors, such as polymer composition or type can be retrieved for improved classification of plastic litter. Furthermore, remote sensing technologies will be merged with object-based deep learning methodologies to enhance identification of plastic waste items, thus creating a robust learning system. Due to the size and complexity of this problem, automated detection, tracking, characterization and quantification of plastic pollution is a key aspect to improve waste management strategies. We therefore explore multispectral band combinations relevant to the detection of plastic waste and operational approaches in imagery processing. This work will contribute towards algorithm development for analysis of video datasets enhancing future near real-time detection of plastic litter. Eventually, this scientific evidence-based tool can be utilized by stakeholders, policymakers and citizens.</p>


2020 ◽  
Author(s):  
Sukanya Mehra ◽  
Khushboo Sharma ◽  
Geetika Sharma ◽  
Mandeep Singh ◽  
Pooja Chadha

Over the past decade, enhanced scientific interest has produced an expanding knowledge base for microplastics. The highest abundance of microplastics is typically associated with coastlines and oceans but the fate of these microplastics is elusive. Microplastics sink following fragmentation which is further ingested by marine biota thus imposes threat to them. Thus, the present review focuses on properties and sources of microplastics, its impact on environment, the bioaccumulation and trophic transfer of microplastics and its impact on living biota. This study would be helpful for the development and implementation of risk management strategies for managing the disposal of microplastics.


2021 ◽  
Vol 5 (1) ◽  
pp. 27-36
Author(s):  
Janvier Hakuzimana

Plastics production (i.e 450 million tons per annum globally), use and disposal (i.e 300 million tons per annum globally) are one of the top environmental concerns and global waste management impediments. Nevertheless, nearly 90% of all plastics ever produced to present has never been recycled. Over the past decades, researchers’ voices have repeatedly been raised for acting and saving inland as well as aquatic ecosystems being harmed by the increasing plastic pollution. Microplastics have been reported by several studies to be in tap water, bottled drinks and in fish we eat. Consequently, conventions and agreements have been signed, laws and regulations enforced (banning, increased taxation, etc) in various regions and countries across the globe for lessening plastics harm on the environment. In this struggle, Rwanda looks to be in front line in beating plastic pollution crisis compared to other regional and continental countries; hence resulted in calling its capital Kigali by many, “the Africa’s cleanest city”. This success behind plastics break free could be attributed to Rwanda’s current strong institutional, political will (promotion of plastic recycling and reuse), legal frameworks (e.g non- biodegradable plastic bags ban, outlawing of single-use plastic items, penalties, severe fines, etc) and active citizens (e.g monthly community works also known as umuganda etc) in terms of eliminating plastic pollution, foster socio-economic development and environmental protection. These strategies do not only protect the environment but also save the money that the government would spend in cleaning the cities and facilitate the advertising of the country for its eco-friendliness; resulting in its tourism development. Recently, similar initiatives of reducing or banning plastics have been taken by several governments in African ,, lower-income countries and developed ones from other regions across the globe due to either limited recycling facilities, inadequate plastics trash disposal or as a solution to overcome the increase of plastic pollution which harm humans, farm animals, aquatic lives (fishes, sea turtles, etc), and the environment health. Thus, the present paper reviews the current knowledge of environmental impacts of plastics, approaches adopted for alleviating the harm from plastics in Rwanda and their implementation procedures which gave credits to the country on global environmental protection scene so that lessons from these practices can be implemented by other countries which aim at reducing plastics waste and associated pollution. The current solid waste management (i.e mainly plastics) and challenges are also discussed in order to be addressed by the authority in charge. Data and literature were retrieved from peer-reviewed journal articles, websites, books, reports, dissertations, local and international online newspapers. Despite significant efforts made towards a plastic free country, less has been written on plastic pollution in Rwanda; making it difficult to get reliable data and information for quantifying past impacts of plastic wastes. Furthermore, to the best of our knowledge no scientific research or report has been so far conducted to prove how plastic wastes contributed over the past years to flooding, prevented crops from growing, to what extent plastic litters have restrained rainwater from penetrating various soil types and other forms of plastic pollution in the country. Such studies are paramount for scientifically justify the ban initiatives in the country. This review resulted into encyclopedia that other researchers can build on to better understand environmental impacts of plastics to learn best plastics management practices for a sustainable environment.


2018 ◽  
Vol 10 (1) ◽  
pp. 34-45 ◽  
Author(s):  
Olaniyi FC ◽  
Ogola JS ◽  
Tshitangano TG

Background:Poor medical waste management has been implicated in an increase in the number of epidemics and waste-related diseases in the past years. South Africa is resource-constrained in the management of medical waste.Objectives:A review of studies regarding medical waste management in South Africa in the past decade was undertaken to explore the practices of medical waste management and the challenges being faced by stakeholders.Method:Published articles, South African government documents, reports of hospital surveys, unpublished theses and dissertations were consulted, analysed and synthesised. The studies employed quantitative, qualitative and mixed research methods and documented comparable results from all provinces.Results:The absence of a national policy to guide the medical waste management practice in the provinces was identified as the principal problem. Poor practices were reported across the country from the point of medical waste generation to disposal, as well as non-enforcement of guidelines in the provinces where they exit. The authorized disposal sites nationally are currently unable to cope with the enormous amount of the medical waste being generated and illegal dumping of the waste in unapproved sites have been reported. The challenges range from lack of adequate facilities for temporary storage of waste to final disposal.Conclusion:These challenges must be addressed and the practices corrected to forestall the adverse effects of poorly managed medical waste on the country. There is a need to develop a medical waste policy to assist in the management of such waste.


Medicines ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 16
Author(s):  
Gabriele Savioli ◽  
Iride Francesca Ceresa ◽  
Luca Caneva ◽  
Sebastiano Gerosa ◽  
Giovanni Ricevuti

Coagulopathy induced by major trauma is common, affecting approximately one-third of patients after trauma. It develops independently of iatrogenic, hypothermic, and dilutive causes (such as iatrogenic cause in case of fluid administration), which instead have a pejorative aspect on coagulopathy. Notwithstanding the continuous research conducted over the past decade on Trauma-Induced Coagulopathy (TIC), it remains a life-threatening condition with a significant impact on trauma mortality. We reviewed the current evidence regarding TIC diagnosis and pathophysiological mechanisms and summarized the different iterations of optimal TIC management strategies among which product resuscitation, potential drug administrations, and hemostatis-focused approaches. We have identified areas of ongoing investigation and controversy in TIC management.


2016 ◽  
Vol 51 (1) ◽  
pp. 57-66 ◽  
Author(s):  
Jelena Čulin ◽  
Toni Bielić

The environmental impact of shipping on marine environment includes discharge of garbage. Plastic litter is of particular concern due to abundance, resistance to degradation and detrimental effect on marine biota. According to recently published studies, a further research is required to assess human health risk. Monitoring data indicate that despite banning plastic disposal at sea, shipping is still a source of plastic pollution. Some of the measures to combat the problem are discussed.


2008 ◽  
Vol 32 (4) ◽  
pp. 439-461 ◽  
Author(s):  
B.J. Smith ◽  
M. Gomez-Heras ◽  
S. McCabe

The problem of the decay and conservation of stone-built heritage is a complex one, requiring input across many disciplines to identify appropriate remedial steps and management strategies. Over the past few decades, earth scientists have brought a unique perspective to this challenging area, drawing on traditions and knowledge obtained from research into landscape development and the natural environment. This paper reviews the crucial themes that have arisen particularly, although not exclusively, from the work of physical geographers — themes that have sought to correct common misconceptions held by the public, as well as those directly engaged in construction and conservation, regarding the nature, causes and controls of building stone decay. It also looks to the future, suggesting how the behaviour of building stones (and hence the work of stone decay scientists) might alter in response to the looming challenge of climate change.


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