João Frias

João Frias
Atlantic Technological University · Marine and Freshwater Research Centre

PhD in Environmental Sciences
Currently working on the Waves of Change project (Funded by the Irish Marine Institute)

About

55
Publications
85,483
Reads
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3,389
Citations
Citations since 2016
44 Research Items
3189 Citations
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Introduction
João is a post-doctoral researcher at the Marine and Freshwater Research Centre in the Galway-Mayo Institute of Technology, working on marine anthropogenic litter and microplastic pollution. He has 10 years experience in this field and is the co-founder of the Portuguese Marine Litter Association. He is currently working on the IRC funded CAROLINE Fellowship (Marie Skłodowska-Curie Action) with the IMP.act project - 'Managing for Microplastics: A baseline to inform policy stakeholders'
Additional affiliations
October 2015 - June 2016
University of the Azores
Position
  • PhD / Researcher
Education
September 2018 - September 2019
Galway-Mayo Institute of Technology
Field of study
  • Certificate in Teaching and Learning
September 2010 - September 2015
Universidade NOVA de Lisboa
Field of study
  • Doctoral Program in Environment
September 2008 - June 2010
Universidade NOVA de Lisboa
Field of study
  • Master on Ecologic Engineering

Publications

Publications (55)
Article
Size-selective harvesting of intertidal molluscs is a common practice. However, the effects of long-term traditional harvesting remain unclear. Changes in mean shell size are generally taken as evidence of changes in harvesting intensity. However, mean shell size is also influenced by environmental pressures, which may confound the analysis of size...
Article
Microplastics (MPs) are an extensive global contaminant in the marine environment, known to be ingested by marine organisms. The presence of MPs in the commercially important marine decapod crustacean Nephrops norvegicus (Dublin Bay Prawn) has been documented for the North-East Atlantic and the Mediterranean, however, uncertainties remain about ret...
Article
Full-text available
The presence of microplastics (MPs), a contaminant of emerging concern, has attracted increasing attention in commercially important seafood species such as Nephrops norvegicus. This species lend themselves well as bioindicators of environmental contamination owing to their availability, spatial and depth distribution, interactions with seafloor se...
Book
This is a Frontiers e-book comprised of a collection of articles that discuss a wide range of topics related to microplastic pollution. You can download the e-book via the link bellow: https://www.frontiersin.org/research-topics/12090/microplastics-in-the-marine-environment-sources-distribution-biological-effects-and-socio-economic-i
Article
Full-text available
Marine anthropogenic litter is increasing in prevalence in both the marine environment and its inhabitants. This study assesses the levels of anthropogenic microplastics in benthic infauna from 20 subtidal stations in Galway Bay, Ireland. Microplastics were removed from the organisms using an alkaline digestion (KOH) and their synthetic origin was...
Technical Report
Full-text available
Technical report on sources, pathway; impacts on vulnerable ecosystems, biota and climate; and short-, medium- and long-term policy recommendations for microplastics
Article
Full-text available
Plastic pollution, and its associated impacts on marine fauna due to chemical contamination, is an area of growing global concern. We analyzed 145 preen gland oil samples from 32 seabird species belonging to 8 families with different foraging habits and life history strategies from around the world for plastic additives and legacy persistent organi...
Chapter
In recent decades, plastic pollution has been the focus of environmental research, with particular focus on the distribution and potential effects of a novel emerging contaminant: microplastics. These solid particles of microscopic dimensions which have been found throughout the environment, from mountain tops to the bottom of the ocean, are a reas...
Book
Full-text available
This booklet provides an insight into the current perceptions about marine litter and plastic pollution in Ireland. The results presented here are based on an online survey conducted between March and May 2019 to 320 anonymous respondents living in Ireland. The survey is part of the research project Managing for Microplastics: A Baseline to Inform...
Article
Plastic pollution is prevalent in all habitats and microplastic ingestion has been recorded in several different species examined to date. However, most studies have focused solely on commercial species. This study investigates microplastics (MPs) by assessing the levels present in a mixed demersal trawl at two sites in a coastal embayment. MPs wer...
Article
Full-text available
Microplastics are pervasive items in the environment and it has been suggested that subtidal sediments are a potential sink and hotspot areas for these pollutants. Due to logistic limitations, this environmental compartment is not routinely sampled, which is evident in the limited number of studies conducted in subtidal zones, compared to intertida...
Article
Floating microplastic debris at the ocean's surface represents about 1% of all plastics found in the environment, with the remainder thought to be either deposited along the coast or sinks to the bottom of the ocean. This exploratory research on a coastal embayment in the Northeast Atlantic Ocean assesses floating microplastic densities and the pot...
Article
Plastic pollution is among the most pervasive stressors currently influencing the marine environment and affecting even the most remote areas. To date, there are still fundamental gaps in our understanding of the major pathways and fate of plastic debris in the oceans. Here we show that oceanic insular environments are important transitory reposito...
Article
Microplastic ingestion by intertidal fauna is a well-documented phenomenon, with emphasis on the physiological consequences of microplastic exposure. However, the behavioural effects of microplastic ingestion have not been explored to the same degree, even in species with documented microplastic ingestion. In this study, the predator-avoidance emer...
Article
Microplastics are widespread pollutants in the marine environment, yet few studies have assessed the abundance and characteristics of microplastics in commercial species. This study evaluates the presence of ingested mi-croplastics in the gastrointestinal tract of Nephrops norvegicus (n = 150), collected from five Irish prawn grounds. The efficienc...
Article
Microplastics (MPs) are an environmental pollutant of increasing concern. However, little research has assessed MP levels in intertidal gastropods. The authors explored MP abundance in the gastropod Littorina littorea from four sites within Galway Bay, West Ireland. To do this, 50 L. littorea were collected from four rocky shores of varying wave ex...
Technical Report
Full-text available
Intertidal Sampling Protocol for marine litter and microplastics of the Managing for Microplastics: A Baseline to Inform Policy Stakeholders (IMP.act) project
Technical Report
Full-text available
Microplastic pollution is presently considered a high concern topic by scientists, policy makers, governmental bodies, non-governmental organizations and the general public. Microplastics are highly widespread in all environmental compartments (e.g. air, water, sediments and biota) and increasing empirical evidence points towards potential negative...
Article
Deep sea sediments have emerged as a potential sink for microplastics in the marine environment. The discovery of microplastics in various environmental compartments of the Arctic Central Basin (ACB) suggested that these contaminants were potentially being transported to the deep-sea realm of this oceanic basin. For the first time, the present stud...
Article
Polymer science is one of the most revolutionary research areas of the last century, instigated by the discovery of Bakelite, the first synthetic plastic. Plastic, once a revolutionary material, has gradually become a global environmental threat with ubiquitous distribution. The term ‘microplastics’ coined in 2004, is used to describe the smaller p...
Poster
Full-text available
Preliminary findings on microplastics abundances in Galway Bay, Ireland
Poster
Full-text available
Marine anthropogenic litter, of which microplastics is part of, has long been recognised as an emerging pollutant of global concern with ubiquitous distribution and direct and indirect impacts on aquatic ecosystems, marine fauna and local economies. In order to contribute to the international debate on microplastics, we hereby propose a standardis...
Chapter
The presence and accumulation of plastics and microplastics in the marine environment (including open sea and coastal systems) is of growing concern. Once discarded in the environment, plastic debris disperse and accumulate in marine habitats all over the world (Cózar et al., 2017; Imhof et al., 2017; van Sebille et al., 2015). Reported concentrati...
Article
Marine litter has been identified as one of the major environmental problems that oceans are currently facing. Worldwide efforts are being made to reduce the input of litter into the oceans, and projects aimed at monitoring their quantities are key to evaluate their success. This study, provide baseline information on the quantities of marine litte...
Technical Report
Full-text available
Marine anthropogenic litter has long been recognised as an emerging pollutant of global concern. Its ubiquitous distribution and its direct and indirect impacts on aquatic ecosystems, marine fauna and local economies have been recently highlighted by several studies and international organisations around the world. Although comprised of different m...
Article
Microplastic ingestion has been reported for several marine species, but the level of contamination in transitional systems and associated biota is less known. The aim of this study was to assess the occurrence of microplastic ingestion in three commercial fish species: the sea bass (Dicentrarchus labrax), the seabream (Diplodus vulgaris) and the f...
Article
Juvenile oceanic-stage sea turtles are particularly vulnerable to the increasing quantity of plastic coming into the oceans. In this study, we analysed the gastrointestinal tracts of 24 juvenile oceanic-stage loggerheads (Caretta caretta) collected off the North Atlantic subtropical gyre, in the Azores region, a key feeding ground for juvenile logg...
Poster
Full-text available
Marine litter is a global problem, affecting several ecosystems and a countless number of species, with direct socio-economic and environmental impacts on tourism and fisheries. Environmental awareness and public outreach actions are key behaviour change measures, as they target practically any sector of society, and contribute to minimise impacts,...
Poster
Full-text available
Despite its geographic isolation from large population centres, the Azores archipelago (north-eastern Atlantic) is not immune to thegrowing environmental threat of marine litter.Recent research developments suggest that many organisms are directly affected by this issue that should be addressed by consistent monitoring efforts. The goal of this stu...
Thesis
Full-text available
Marine litter is one of the most pervasive environmental pollution problems that is currently affecting marine ecosystems worldwide. Synthetic plastic materials are the most common type of marine debris which according to worldwide statistics represent approximately 80% of litter stranded on beaches. Inside marine litter, microplastics represent th...
Article
Beach clean-ups campaigns organized by Coastwatch, Geota, are a common annually practice in the Portuguese coastal area. Bearing in mind the goals and objectives of the Marine Strategy Framework Directive (2008/56/EC) (MSFD), the Institute of Marine Research (IMAR FCT-UNL), in Faculty of Sciences and Technology of Universidade Nova de Lisboa partic...
Article
Full-text available
Beach clean-ups campaigns organized by Coastwatch, Geota, are a common annually practice in the Portuguese coastal area. Bearing in mind the goals and objectives of the Marine Strategy Framework Directive (2008/56/EC) (MSFD), the Institute of Marine Research (IMAR FCT-UNL), in Faculty of Sciences and Technology of Universidade Nova de Lisboa partic...
Conference Paper
Full-text available
Background/Question/Methods Plastic pollution is now recognized as a global issue due to the general concern about the increasing amounts found in the oceans worldwide and the fact that plastic particles act as vectors of contamination with persistent bioacumulative and toxic (PBT) pollutants. The size of plastic fragments decreases in result of...
Article
Plastic marine debris pollution affects all the oceans and has short, medium and long-term consequences for organisms living in these environments. Plastics, especially microplastics represent a threat to wildlife due to particle uptake by ingestion while larger plastic pieces entangle and suffocate animals. Since 2008, we are studying plastic debr...
Article
Full-text available
AbsTrACT Plastic marine debris pollution affects all the oceans, and has short, medium and long term consequences for organisms living in these environments. Plastics, especially microplastics represent a threat to wildlife due to particle uptake by ingestion while larger plastic pieces entangle and suffocate animals. Since 2008, we are studying pl...
Article
Microplastics pose a threat to coastal environments due to their capacity to adsorb persistent organic pollutants (POPs). These particles (less than 5 mm in size) are potentially dangerous to marine species due to magnification risk over the food chain. Samples were collected from two Portuguese beaches and sorted in four classes to relate the adso...

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Projects

Projects (9)
Project
MicroplastiX is an international, multidisciplinary research project which will investigate the effects of weathering and degradation on plastic materials along with the consequent fragmentation into smaller items known as microplastics (MPs). The project will also explore how these processes affect MP distribution and dispersal on the marine environment, as well as effects on marine biota. For more details please check www.microplastix.org
Project
The Frontiers in Environmental Science is calling for papers for a special research topic dedicated to microplastics. We welcome high quality submissions on a range of aspects related to MP pollution, from waste management and recycling to their sources and sinks in terrestrial, aquatic and marine environments. Please, visit the link bellow to more information: https://www.frontiersin.org/research-topics/12090/microplastics-in-the-marine-environment-sources-distribution-biological-effects-and-socio-economic-i