Sedat Gündoğdu

Cukurova University | CU · Department of Basic Sciences

An international group of experts says the production of new plastics should be capped to solve the plastic pollution problem. The authors argue that all other measures won’t suffice to keep up with the pace of plastic production and releases. This letter was published in the journal Science.

Plastics are ubiquitous. It has been used in human activities, from agriculture to packaging, infrastructure, and health. The wide range of usage makes plastics an omnipresent pollutant in the environment. This study investigated the abundance and type of plastics in agricultural soil in the Adana/Karataş region in Turkey, where disposable low-tunn...

Plastic pollution has emerged as a prominent environmental concern over recent decades, particularly due to its critical implications for seafood safety. In light of this, an investigation was conducted to assess the abundance and characteristics of microplastics (MPs) in Unio mancus Lamarck 1819, a freshwater bivalve inhabiting Atatürk Dam Lake...

Groundwater is a critical resource for drinking, agriculture, and domestic purposes but is under threat from mi-cro and nano plastic (MNP) pollution. MNPs can contaminate aquifers through various sources such as industrial abrasives, personal care products, wastewater, and improper waste management. MNPs can enter groundwater through leaching or pe...

Pollution of rivers and streams is primarily the result of human activities, leading to significant environmental damage and health risks. Despite industrial-scale activities and inadequate wastewater treatment, many regions still maintain lenient policies regarding the permissible limits of contaminants in water bodies. This pollution causes chemi...

Her sayısında farklı bir konuyu mekânsal adalet perspektifinden inceleyen beyond.istanbul’un yeni sayısı “atık” temasıyla çıktı! Konuk editörlüğünü Sedat Gündoğdu‘nun yaptığı yeni sayı, atığın politik ekolojisini insan dışkısından nükleer atığa, kimyasal atıklardan moloza, plastikten asbeste, madenden tekstil atıklarına, atık ticaretinden çöp sömür...

The UN international legally binding instrument on plastic pollution (UNEA resolution 5/14) aims to reduce plastics pollution. However, midstream and downstream assessments show that optimizing waste management, removal technologies, and improved circularity is not sufficient to curb plastics pollution in the short-, mid- or long-term. Therefore, w...

Please cite this article as: Uğur Çağlayan, Sedat Gündoğdu, Tiffany M. Ramos and Kristian Syberg, Intravenous hypertonic fluids as a source of human microplastic exposure, Abstract This study investigates the presence of microplastics (MPs) in hypertonic fluid solutions, a widely used medical treatment packaged predominantly in plastic. For this pu...

This contributed volume takes a holistic view of the international waste trade and in doing so argues that the transfer of plastic waste from mainly Global North to primarily Global South countries constitutes a form of 21st Century colonialism. The book first describes the history of the plastic waste trade, from toxic disasters in the 1970s and 1...

This chapter examines the impact of plastic waste on the environment in Türkiye, a major importer and generator of plastic waste. Poor waste management exacerbates the harmful effects of plastic waste on the land, the seas, and the air. We analyze whether waste management litigation and practices in Türkiye are in conformity with the country’s obli...

Microplastics (MPs) have attracted global attention due to their ubiquity and potential impact on the environment. However, MPs are poorly documented along the Algerian coast. To address this data gap, this study investigated the presence of MPs on three recreational beaches in western Algeria (Stidia, Sablettes and Mersat El Hadjaj). The mean MP a...

Microplastic (MP) contamination in commercially sold spirulina products has not been previously investigated. In this study, 29 spirulina samples in various packaging types were purchased from different brands and origins to assess the presence of MPs. Microplastic analysis was conducted using microscopic and μ-Raman techniques. To ascertain whethe...

Plastic removal technologies can temporarily mitigate plastic accumulation at local scales, but evidence based criteria are needed in policies to ensure that they are feasible and that ecological benefits outweigh the costs. To reduce plastic pollution efficiently and economically, policy should prioritize regulating and reducing upstream productio...

Aquatic environments are one of the final destinations for microplastics. In this review, a combination of systematic and narrative literature review was conducted to identify and summarise advances, gaps, and future directions in microplastic monitoring studies in the Turkish aquatic environment and in inhabiting aquatic organisms. A total of 62 p...

This study analyzed 34 canned fish products, including 28 tuna specimens, 3 salmon specimens, 1 mackerel specimen, and 1 anchovy specimen, from 13 different brands purchased in Türkiye. The study aimed to determine metal/metalloid levels in canned fish and potential health risks for both children and adult consumers. The metal/metalloid levels in t...

Responding to a Science News story, Zouxia Long argues we should ”Begin ocean garbage cleanup immediately” (1) since removal outweighs direct impacts on organisms or species. This notion is unsubstantiated, and overlooks the potential long-term loss of ecosystem function and biodiversity from non-selective plastic removal technologies (PRTs), such...

Microplastics (MPs) have become prevalent in various environmental compartments, including air, water, and soil, attracting attention as significant pollutant parameters. This study investigated the prevalence of MP pollution in surface sediments along Istanbul's Marmara Sea, encompassing the megacity and the Bosphorus. A comprehensive sampling app...

Microplastic (MP) contamination in commercially sold Spirulina products has not been previously investigated. In this study, 29 Spirulina samples in various packaging types were purchased from different brands and origins to assess the presence of MPs. Microplastic analysis was conducted using microscopic and μ-Raman techniques. A total of 251 MP-l...

Microplastics have become ubiquitous pollutants everywhere. However, there is still limited data on the presence of microplastics in some ecosystem compartments. Groundwater resources, particularly thermal waters, are also an environment with little-known microplastic pollution. In this study, the presence of microplastics in thermal water resource...

Microplastic pollution in aquatic ecosystems presents an emerging environmental threat that can have adverse effects on ecology, endanger aquatic species, and result in economic damage. Despite the numerous studies reporting the presence of microplastics in marine environments, research into their presence in freshwater systems or inland waters rem...

In this Matters Arising, we respond to a recent article by Bachmann et al.1 We argue that dealing with plastics pollution as a novel entity within the planetary boundaries framework needs to consider the entirety of the plastics life cycle, from resource extraction to impacts on earth system processes. Singling out LCA quantifications to set a boun...

Plastic pollution in aquatic environments is a recognized environmental threat on a global scale and is fed by the linear economy model of “make-use-dispose,” which underpins both the fossil fuel and plastic industries. This chapter examines the issue of microplastic pollution in different freshwater environments: (i) rivers and tributaries, (ii) l...

Since Turkey is surrounded by seas on three sides and has different climatic characteristics, it has an extremely rich biodiversity. Identifying fish species and varieties is of great importance for protecting them from drought conditions seen in recent years and using them as a source of human food protein. The purpose of this study was to identif...

Though they only account for 16 percent of the world’s population, high-income countries generate about 34 percent of the world’s waste. A large portion of the generated wastes are plastics, which often contain toxic chemicals. Historically, high-income countries have exported a significant amount of plastic waste under the guise of recycling. Thi...

The presence of microplastics (MPs) in processed seafood is a growing concern. In this study, 33 different canned fish brands belonging to 7 producers were purchased from the Turkish market and investigated. MPs composition, possible sources, and potential intake were assessed. Light microscopy was used to quantify potential MPs, and micro-Raman mi...

Britannica Ansiklopedisi’nin “Genellikle ısı ve basınç uygulanarak kalıplanma veya şekillendirme özelliğine sahip polimerik malzeme” olarak tanımladığı plastik, kimyasal bir bileşim olmanın yanında hayatımızın her alanına girmiş ve âdeta hayatımızı işgal etmiş durumda. Öyle ki, özellikle insan kaynaklı çevresel etkilerden kaynaklı olarak “Antropose...

Tarımda plastik malç kullanımı, küresel boyutta tarımsal üretimi büyük ölçüde artıran, ancak çevresel olarak ciddi miktarda plastik kirliliği yaratan bir uygulamadır. Bu çalışmada, 2008 ve 2017 yıllarından bu yana çilek üretiminde plastik malç uygulanan Konya ili Hüyük İlçesi tarım topraklarındaki plastik miktar ve türleri araştırılmıştır. Toprak ö...

Cigarette filters offer no public health benefits, are single-use plastics and the most common source of plastic (cellulose acetate) pollution. Filters are routinely littered, accounting for a significant proportion of plastic litter worldwide, requiring considerable public funds to remove, and are a source of microplastics. Used cigarette filters...

Journal website link: www.frontiersin.org

Turkey is one of the major plastic pollution sources in the Mediterranean and the Black Sea. This review summarizes present information, data, and legislation on plastic pollution in Turkish aquatic ecosystems. According to results derived from reviewed studies, both macro and microplastic pollution were documented in Turkish aquatic ecosystems. Mo...

This study analyzes the metal/metalloid levels in stuffed mussels (Mytilus galloprovincialis) sold in five cities in Turkey and evaluates the possible health risks these levels pose for children and adults. Inductively Coupled Plasma–Mass Spectrometer (ICP–MS) was used to determine the metal levels of samples. In stuffed mussels, the highest levels...

To examine the impact of the dumping and open burning of waste plastics with unknown content on human and environmental health, samples were collected from soil, ash, water, and sediment, together with samples of plastic waste, from five different dumping sites in the Adana province. These samples were examined by Greenpeace Research Laboratories a...

The tendency for plastic leakage into the environment is increasing, and researchers struggle to detect the increase of plastic particles in marine environments. However, this situation raises a heated debate about the fate and final destination of missing plastics. The main axis of these discussions is whether the polymer types of plastics are als...

Due to the increasing plastic production in the world, it is predicted that the amount of microplastic will increase in the future in all ecosystems in the world, especially in aquatic ecosystems. It is obvious that the negative effects of this pollution will increase in the same way. In this section, the coastal ecosystem, which is an important pa...

Microplastic pollution in the marine environment is a growing concern. Microplastic particles floating or settled in the sea affect both biotic and abiotic components of the marine environment through absorption by biota, entanglement, and colonization. There is also strong evidence that microplastics support microbial growth (also known as plastic...

Contamination of the food and especially marine environment with nano/micro-plastic particles has raised serious concern in recent years. Environmental pollution and the resulting seafood contamination with microplastic (MP) pose a potential threat to consumers. The absorption rate of the MP by fish is generally considered low, although the bioavai...

Microplastic pellets were sampled in May and November 2018 during one-week surveys at 13 coastal beaches in Iskenderun Bay/Turkey. Pellet pollution index (PPI) was calculated for the beaches as a tool to assess beach pollution by microplastic pellets. Hydrometeorological conditions, including wind, current, wave, surface run-off, and precipitation,...

This study was carried out by the Microplastics Research Group with support from GAIA (Global Alliance for Incinerator Alternatives). Data collection of the research was carried out by Eksen Research. A total of 1078 people (48.6% male and 51.4% female) in 25 cities across Turkey were interviewed to assess their knowledge/perception with regard to...

Macro- and microplastics are critical emerging pollutants found in marine and freshwater environments around the world. Plastic consumption supported by a linear economy combined with exportation of plastic packaging materials to countries with deficient solid waste management practices causes massive plastic pollution in low and middle-income coun...

The blue swimming crab, Portunus segnis, is a Lessepsian and the most abundant and economically significant crab species on the Mediterranean Sea coast of Türkiye. However, there are a few studies on the growth of P. segnis in Türkiye. Our objective is to determine the allometry, and growth parameters of P. segnis in Iskenderun Bay, the Northeaster...

Rural areas are exposed to severe environmental pollution issues fed by industrial and agricultural activities combined with poor waste and sanitation management practices, struggling to achieve the United Nations’ Sustainable Development Goals (SDGs) in line with Agenda 2030. Rural communities are examined through a “dual approach” as both contrib...

The anthropogenic marine debris in the Mediterranean Sea represents a growing concern because of its potentially harmful impact on marine ecosystems. In this paper, we investigated the composition of marine debris in the Iskenderun Bay seafloor. Between November 2009 and April 2010, a total of 34 trawl operations were conducted. Hauls lasted 60-385...

Turkey became a major importer of global plastic waste after China banned plastic imports on January 1, 2018. Turkey imported only 261,864 tons of plastic waste annually before the ban, but annual imports increased to 772,831 tons by 2020. Turkey recently implemented restrictions on importing plastic waste (quotas, %1 contamination limit, banned mi...

Hukukta hukuki yorum için temel kabul edilen ilkelerden biri, yetkide ve usulde paralellik ilkesidir. Paralellik ilkesi, salt teknik hukuki bir ilke olmanın ötesinde çeşitli anlamlara sahiptir. Hayatın her alanında olduğu gibi oyunda, bilimde, sanatta ve felsefede kullanılan metodolojinin temeline, bu temeli oluşturan sistematik yapının çatısına da...

Plastics (both micro and macroplastics) is an important environmental contaminant, affecting the food chain and directly entering into marine products, including seafood. However, plastic contamination in wild derived fishmeal, a globally traded commodity, remains unknown. Using a global sampling approach, this study is the first study to assess th...

Microplastic (MP) pollution is a ubiquitous and persistent pollution problem in the marine environment that is threatening marine life. In this study, the presence of MP in stuffed mussels sold in 5 Turkish cities was examined. The microplastic content of ready-to-eat stuffed mussels purchased from 41 different vendors in 5 different cities was stu...

Plastics have become an inseparable part of modern life as a consequence of their versatility, low cost, durability, and light-weight. In this study, the presence of microplastics in the stomachs and digestive tracts of a total of 243 individuals of leaping mullet (Chelon saliens (Risso, 1810)), red mullet (Mullus barbatus barbatus Linnaeus, 1758),...

The ubiquity of plastics in the environment poses a significant risk for both human health and natural ecosystems. Especially the fiber type plastics have a quite high share among these plastics. The textile industry is one of the most important sources of fibers. Recycling is one of the solutions offered to reduce the environmental impact of texti...

One of the main causes of injury and mortality in marine life is entanglement in plastic litter. Marine plastic waste can affect marine organisms in several ways: causing serious injury or death (resulting from entanglement in or ingestion of plastic items), enabling chemical and microbial transfer (by acting as a vector for the transport of biota)...

Bu çalışmada, Marmara, Ege ve Akdeniz’den toplanan, barbun, istavrit, kefal, mırmır, tekir ve kırmızı karides türlerinin mide ve sindirim kanalları, mikroplastik varlığı açısından incelenmiştir. Bunun yanında, çoğunluğu Ege ve Marmara Denizi’nden toplanmış ya da bu bölgelerdeki çiftliklerden tedarik edilmiş midyelerden üretilen ve Adana, Ankara, Bo...

It has become apparent that the coastal zones of aquatic environments are significantly affected by plastics pollution. The accumulation of marine plastic litter on beaches is an important problem due to their significant environmental impacts. In this study, 13 coastal areas in Iskenderun Bay (NE Levantine coast of Turkey) were sampled in late Apr...

This study examines the extent of macroplastic pollution on Samandağ beach and the potential effects on green sea turtles during nesting. For this purpose, a total of 39 different turtle tracks were studied. Mean plastic concentration was found to be 19.5±1.2 pcs m-2. Among the different types of crawling, the highest concentrations of plastics wer...

Plastic pollution is widely recognized as an important issue for marine environment. Currently, a large proportion of the plastics found in the marine environment are in the form of microplastics (< 5 mm). Microplastics are of most concern because they cannot be easily spotted, and are easily ingested by marine organisms and make their way through...

Plastics' low cost, durability, and versatility have earned them a place in every aspect of our lives. The amount of manufactured plastics reached 355 million tons by 2016. Since 1940s, plastic pollution is becoming a global reality. Although the impact of plastic pollution on the environment has been documented, especially in marine ecosystems, th...

In this study, microplastics in spiny oysters (S. spinosus) in the Yumurtalık Bight (Iskenderun Bay, The northeastern coast of Levatine Sea) were investigated. As a result, microplastics were detected in all oyster samples. The number of microplastics were found between from 1.8 to 2.6 items per individual and 1.8 to 2.1 particles per gr. Three typ...

Wastewater treatment plants are one of the primary pathways through which microplastics enter aquatic environments. In this study, we have determined the microplastics concentrations of the influent and secondary effluent water of two wastewater treatment plants in Turkey. For this purpose, we have taken samples of the influent and effluent water o...

Heavy rains that began on December 20, 2016, caused severe flooding in the province of Mersin, southern Turkey, on December 29, 2016. Two people died and many were wounded as a result. The flood increased the amount of microplastics pollution in Mersin Bay by 14 times.

Fifteen specimens of the big-scale sand smelt, Atherina boyeri were caught by a single trawl haul with a net mesh size of 3 mm on February 2017 from the Seyhan Dam Reservoir (South Anatolia, Adana/Turkey).In this study the big-scale sand smelt, A. boyeri, was recorded for the first time in the Seyhan Dam Reservoir. In addition, some morphometric an...

Floods caused by heavy rain carry significant amounts of pollutants into marine environments. This study evaluates the effect of multiple floods that occurred in the northeastern Mediterranean region in Turkey between December 2016 and January 2017 on the microplastic pollution in the Mersin Bay. Sampling was repeated in four different stations bot...

This study presents 738 length-weight relationships for 242 species found in Turkish seas. All length-weight relationships presented were collected from a total of 33 studies. These studies were all performed in Turkish coastal waters between 1997 and 2013. For all studies, the median of a value was calculated as 0.014 and the median of b value was...

In this study, we determined the relationships between seven morphometric characters of common stingray (Dasyatis pastinaca) and the marbled stingray (Dasyatis marmorata) from the Northeast Levantine coast of Turkey. A total of 215 samples were obtained by monthly bottom-total weight (TW), disc length (DL), disc width (DW), nose-eye (NE), mouth-wid...

Estimation of the growth parameters of fish are vital to understand their biology. For this purpose we collected studies that performed up to 2017 regarding the growth of species belonging to the Diplodus genus. Data were gathered from sources like Web of Science (webofknowledge.com), Scopus (scopus.com), Google Scholar (scholar.google.com), Resear...

https://www.tandfonline.com/doi/abs/10.1080/19440049.2018.1447694 Microplastic (MPs) pollution has become a problem that affects all aquatic environment in the world. In this study, we looked into whether MPs in seas and lakes reach consumers through table salt. For this purpose, we gathered 16 brands of table salts from the Turkish market, and...

http://www.egejfas.org/issue/29803/329228 Microplastic pollution is a global problem. The Mediterranean Sea, especially, has high pressure of pollution as it is enclosed by highly populated and industrialized countries. In this study, we have determined the level of microplastic pollution in the Iskenderun Bay, located in the Northeastern Levantine...

The Mediterranean is an ecosystem that faces more and more microplastic pollution every day. This causes the whole Mediterranean to face the negative effects of plastic pollution. This study examines the state of plastic debris and fouling organisms found on it in one of the areas most affected by plastic pollution, Mersin Bay. As a result, a...

NOT: Document password: PRIMO19_Matsuyama The determination of the microplastic distribution will be beneficial as a measure of the potential effects on the environment. The Mediterranean Sea had a high risk of pollution as it was enclosed by highly populated and industrialized countries. Here, we determined the level of micro- and mesoplastic pol...

The determination of the microplastic distribution will be beneficial as a measure of the potential effects on the environment. The Mediterranean Sea had a high risk of pollution as it was enclosed by highly populated and industrialized countries. Here, we determined the level of micro- and mesoplastic pollution in Iskenderun and Mersin Bays, locat...

We collected data on the age at maturity (tm) and maximum reported age (tmax) for 153 stocks of marine fishes in Turkey, belonging to 59 species, 24 families and 2 classes (Actinopterygii and Elasmobranchii). Among Actinopterygii tm had an average of 1.8 years (1 to 4 years) while among Elasmobranchii it had an average of 11.9 years (2 to 11.9 year...

This study presents the record of 5 new Opisthobranchia species that were unrecorded in Iskenderun Bay before. One of the species discovered is a new record for Turkish waters.

The aim of this study is to compare Bayesian and Classical estimation for describing the growth curves of Brushtooth Lizardfish (Saurida lessepsianus Russell, Golani & Tikochinski 2015). Classical nonlinear regression method and Bayesian estimation method were used to obtain the estimation of the components of the von Bertalanffy growth model. The...

This study aims to determine the factors affecting von Bertalanffy growth factors and to demonstrate the relationships between these factors. Accordingly, 65 sets of growth data belonging to 43 studies on the subject of the growth of four Mullidae species prevalent in the Mediterranean (Mullus barbatus, Mullus surmuletus, Upeneus pori and Upeneus m...

This study presents 738 length-weight relationships for 242 species found in Turkish seas. All length-weight relationships presented were collected from a total of 33 studies. These studies were all performed in Turkish coastal waters between 1997 and 2013. For all studies, the median of a value was calculated as 0.014 and the median of b value was...

The seasonal variations of caulerpenyne (CYN) levels, secondary metabolite of Caulerpa genus, were investigated in the fronds and stolons of Caulerpa taxifolia var. distichophylla recently present at three stations in the Gulf of İskenderun, the Eastern Mediterranean Sea, including its relationships with various physicochemical parameters of the se...

This paper presents the first report of Elysia grandifolia Kelaart, 1858 in the Iskenderun Bay (the northeast end of the Levantine Sea (EM), the southeastern coast of Turkey). It is, also, the second record for the Turkish Levantine coast.

In this paper, a Bayesian growth modeling method is introduced for tarek (Alburnus tarichi, Guldenstadt, 1814) growth. 560 tareks were sampled 12 times by using 20 mm, 22 mm and 24 mm trammel nets between the months of January 2008 and January 2009. The Bayesian method was used to estimate weight-length relationship parameters and von Bertalanffy g...

Invasive species may exhibit dynamics different to those exhibited in their native range owing to the lack of native competitors and predators. The blue crab (Callinectes sapidus) is native to the western Atlantic, but is an invasive species in the Mediterranean. We examined the dynamics of growth and mortality of an invasive population of blue cra...

Bu çalışmada Saurida lessepsianus’un von Bertalanffy büyüme modeli parametreleri tahminine, farklı parametrizasyon tekniklerinin etkisi incelenmiştir. Bu amaçla Galucci ve Quinn parametrizasyonu, Mooij parametrizasyonu, Francis parametrizasyonu ve Schnute parametrizasyonu kullanılmıştır. Akaike Bilgi Kriteri (AIC), güvenirlik aralıkları ve parametr...

This study presents the first record of Martesia striata (Linnaeus, 1758) in the Mediterranean Sea. It was detected during a routine monitoring study in the Iskenderun Bay, Turkey. The potential for M. striata to establish permanent population in the Mediterranean Sea and possible risks that might arise from such a situation were briefly discussed.

This study aimed to determine the effects on protein of frozen storage time (-20 °C), and on properties of raw, marinated and smoked rainbow trouts (Oncorhynchus my kiss). Therefore, the fish were smoked and marinated. All filleted fish samples including also the raw ones were vacuum- packed, subjected to 9 months of frozen storage and analyzed at...

Süveyş kanalının 1869’da açılmasıyla birlikte, birçok canlı türü, bu kanal aracılığıyla Akdeniz sularına giriş yapmaya başlamıştır. Bu tarih Akdeniz’in biyolojik çeşitliliği için dönüm noktası sayılabilir. Çünkü bu tarihten sonra artık Akdeniz’in biyoçeşitliliği muazzam bir şekilde değişmeye başlamıştır. Günümüze de bu değişim halen devam etmeyi sü...

This study examines features such as the population structure, growth and reproduction of the pearl mullet captured in the Lake Ercek. Between the dates January 2008 and January 2010 a total number of 527 individual were sampled through using trammel net and mesh size of 20,22 and 24 mm of fish net. The fork length, total and gonad weight, sex and...

Yetiştiriciliği yapılan türlerin ekonomik, kaliteli, hızlı ve az kayıpla yetiştirilebilmeleri ve pazara sunulmaları için önemli çalışmalar gerçekleştirilmektedir. Yetiştiricilikte, üretim maliyetinin %30-60 oranında önemli bir kısmını tutan yem ve yem maddelerinin geliştirilmesi konusunda birçok araştırma yapılmaktadır. Dolayısıyla su ürünleri yeti...

The aim of this study was to compare Bayesian and Classical estimation for describing the growth curves of red mullet (Mullus barbatus barbatus Linnaeus, 1758). Classical nonlinear regression method and Bayesian estimation method were used to obtain the estimation of the components of the von Bertalanffy growth model. The estimated parameters showe...

In order to put cultured species on the market with high quality and few casualties, many important studies are carried out. Most of the researches are conducted in the development of feed and feed ingredients 30-60% of the production cost in farming. Therefore, in aquaculture, an interest in alternative feed ingredients is moving at a very fast ra...

In the present paper we have examined Bayesian update for descriptive statistics for a sample of 730 Por’s Goatfish (Upeneus pori) (Ben-Tuvia and Golani, 1989), collected from Iskenderun Bay, in the northeast Mediterranean Sea. The computational approach uses the Markov Chain Monte Carlo simulation to draw samples from the posterior distributions o...