Cüneyt Nadir Solak

• Prof. Dr. at Dumlupinar University

A compilation/discussion of data published on diatoms in aquatic systems from Turkey is provided based on data ordered according to type of study, type of water body, and river basins within the conterminous Turkish territory. The majority of phycological studies in Turkey focus on phytoplankton seasonal changes in lakes and reservoirs located in l...

The descriptions of the new species Cymbella balkii sp. nov. and C. yerlii sp. nov. were given in this study. The species were found in a karstic limnocrene spring which is one of the most important sources of Sakarya River. Cymbella balkii sp. nov. is very similar to C. pervarians, C. simonsenii, C. percymbiformis, C. perparva, C. alpestris and C....

The Kızılırmak River is the longest river (1.355 km) in Turkey and flows into the Black Sea. Main pressures in the basin are waste water discharges, widespread agriculture, livestock activities, and excessive salinity due to the natural formation. In this study, the performance of the most widely used European diatom indices (IPS, IDG, IBD, EPI-D,...

Background and aims – Kützing separated the genus Achnanthidium from the genus Achnanthes based on two species: Achnanthes minutissima and Achnanthidium microcephalum . These two genera were distinguished by the presence of stalks in the Achnanthes genus and their absence in Achnanthidium . Before electron microscopy, the difference between Achnant...

Çanakkale is located in Western Anatolia, a region known for extensive mining in the country. In this study, three new species: Nitzschia arslaniana sp. nov., Nitzschia efeiana sp. nov., and Nitzschia szaboiana sp. nov. are described from highly acidic environments in Çanakkale. In morphology, Nitzschia arslaniana is similar to Nitzschia inconspicu...

A new Fallacia cinariana sp. nov. is described from a unique extreme microenvironment in the highly calcareous Kaklık Cave, Pamukkale Travertines in the Western Anatolian Karst Region, Türkiye with calcareous (pH 8.2) rich waters. Valves of F. cinariana are small (<15 um), linear to linear-elliptic with rounded ends. As with the type species for th...

This study introduces Halamphora witkowskii sp. nov., a newly discovered diatom spe-cies from Lake Van, the world’s largest soda lake known for its high alkalinity. Detailed morpho-logical and morphometric analyses using light and scanning electron microscopy effectively distin-guished this new species from closely related taxa, including Halamphor...

In this study, the distribution and composition of epipelic diatoms in Büyükçekmece Reservoir, which is one of the most important and main freshwater resources for İstanbul, Türkiye were investigated seasonally. Epipelic diatom samples were collected from five different stations each season (February, May, August, and November) in 2019. A total num...

This paper describes a new species of Halamphora – Halamphora lombokensissp. nov. and records for the first time Halamphora banzuensis for the coasts of Indonesia. The study utilized light and scanning electron microscopy to meticulously examine the morphology. These species were found at Kuta Beach on the island of Lombok in Indonesia in highly sa...

In this study, we describe Halamphora vantushpaensissp. nov., a newly identified diatom species found in the highly alkaline Lake Van in Eastern Turkey (Türkiye). This new species is characterized morphologically by light and scanning electron microscopy, performed on both wild and cultivated samples. Two monoclonal cultures were submitted to a gen...

Two new Halamphora (Amphipleuraceae: Bacillariophyta) species from Aydar-Arnasay system of Lake in Uzbekistan)

Psychrophile diatoms in Turkiye

Diversity of Halamphora (Diatomae)

Rare or poorly known diatoms in Salda lake

The Erg Er Raoui is located in the northwestern part of the Algerian Sahara. In the region, numerous inter-dune depressions are marked by Holocene lacustrine sedimentation (detrital layers overlain by white biogenic carbonates containing diatoms). The samples were collected from the depressions by scraping the surface of the hills. The samples were...

Cultures in Mediterranean climate zones (MCZs) around the world have long been reliant on groundwater and springs as freshwater sources. While their ecology and cultural sustainability are recognized as critically important, inter-relationships between springs and culture in MCZs have received less attention. Here we augmented a global literature r...

Morpholog3cally, Halamphora 3s very s3m3lat to Amphora genus. F3rstly, the genus was descr3bed by Levkov. Regard3ng the genus, Grunow's stud3es were qu3te remarkable. In th3s study, d3fferent waters l3ke brack3sh (some spr3ngs 3n Burdur Lake, Acıgöl, Van and Hazar Lake), hotspr3ngs (Kütahya-Ged3z, S3mav, Emet and Tavşanlı hotspr3ngs, Çanakkale-Tuzl...

The current article describes Navicula vanseeasp. nov., a new species of diatom from Lake Van, a highly alkaline lake in Eastern Anatolia (Türkiye). The description is based on light and scanning electron microscopy performed on two monoclonal cultures. The complete nuclear rRNA clusters and plastid genomes have been sequenced for these two strains...

Phytoplankton is the most suitable quality element for assessing the ecological status of standing surface water bodies such as lakes and reservoirs. In order to evaluate changes in these water bodies, it is important to determine the reference areas (REFS) and maximum ecological potential areas (MEPS) so as to explain the deviations from the refer...

The Lut Desert is one of the world's driest and hottest large deserts. This large basin has shallow groundwater pools that have been studied little for microbial flora, especially diatoms, and the present study is the second attempt. We report a new genus with one new species and the related morphotypes. The genus Lutophila and its type species L....

The aim of the study is to create/determine the current diatom species list/composition of Lake Gölcük. The study is aimed to determine the current benthic diatom species composition of Gölcük Lake. Within the scope of the TÜBİTAK project No. 121Y393, samples were collected from Gölcük Lake between March 2022 and July 2022, using a van veen grab sa...

The aim of the study is to reconstruct the 100 – 150 year past environmental variables of Lake Gölcük by converting them into qualitative and quantitative data. Within the scope of TÜBİTAK project No. 121Y393, three replicate sample(s) were collected from Gölcük Lake in July 2022 from a water depth of 28 m using a Kajak brand gravity core sampler....

Cultures in Mediterranean climate zones (MCZs) around the world have long been reliant on groundwater and springs as freshwater sources. While their ecology and cultural sustainability are recognized as critically important, inter-relationships between springs and culture in MCZs has received little attention. Here we augmented a global literature...

Aim of the study The Gala Lake, which has a status of National Park and is a protected area, is the one of the most important natural stagnant water bodies in the Marmara Region of Türkiye. However, it is under effect of a significant agricultural stress, mainly resulting from paddy cultivation of rice. In this research, epiphytic diatoms of Gal...

The present study aimed to contribute to the algal flora of Türkiye by Bacillariophyta (diatom) as new records for the Turkish freshwater. Phytobenthos and phytoplankton were sampled three times (spring, summer, and autumn) a year between 2017 and 2019. Samples of the phytoplankton were collected with a water sampler from three depths, and samples...

Craspedostauros E.J. Cox is a diatom genus comprising 17 taxa reported from various regions of the world. While many species of Craspedostauros are epibiontic, the taxa have variable ecological preferences. In this study we formally describe Craspedostauros nazmii sp. nov. , an epilithic species discovered along the Turkish Black Sea Coast, based o...

Kaçkar Mountains is located in the Eastern Black Sea Region in Türkiye. The mountainous area includes granite and volcanic rocks influencing water conditions. Moçar Lake is located at 40°42'35'' N and 40°54'51'' E in the Verçenik Valley with an altitude of 3.060 m. a.s.l. The samples were collected in July 2015 from epilithic and epipelic substrata...

A new species Surirella caljoniana sp. nov. is described from a unique microenvironment in the mountainous region of Türkiye. The taxon was found in a small soda spring which is an important water source for the Kızılırmak River. Surirella caljoniana is similar to Surirella brebissonii Krammer & Lange-Bertalot, S. brebissonii var. kuetzingii Kramme...

During this investigation, sixteen species from the genus Gomphonema were found in a shallow bay (near Oimur, Kabansky District) located on the eastern shore of Lake Baikal. Eleven of these taxa have been described previously. Five species are described as new to science. We provide ecological information about these Gomphonema species, including t...

Cold environments are considered extreme biomes and historically thought to be barren and unproductive. However, investigations show that some of the coldest regions in the world represent unique biodiversity hotspots. In this review, the prominent diatom communities of alpine lakes and ponds across different parts of the world, including the Arcti...

Turkish lakes which have different morphometry and hydrology, have a great potential that supports distinct algal diversity as a result of different climate types and geographical variation (latitudinal, longitudinal, and altitudinal gradients). However, the algal flora of Turkey has not been completed, and the number of new taxa has increased due...

The present study aimed to contribute to the algal flora of Turkey by Bacillariophyta (diatom) as new records for the Turkish freshwater algal flora. Phytobenthos and phytoplankton were sampled three times (spring, summer, and autumn) a year between 2017 and 2019. Samples of the phytoplankton were collected with a water sampler from three depths, a...

Abstract: A compilation/discussion of data published on diatoms in aquatic systems from Turkey is provided based on data ordered according to type of study, type of water body, and river basins within the conterminous Turkish territory. The majority of phycological studies in Turkey focus on phytoplankton seasonal changes in lakes and reservoirs lo...

In purpose to assess the water quality in Peshawar Valley, the diversity of algae and cyanobacteria were studied in 41 sites during 2018-2019. A total of 361 species-indicators of 7 Phyla were revealed. Algae and cyanobacteria in the studied sites preferred benthic and plankton-benthic lifestyle and mesotrophic waters. Indicators characterized wate...

In this article we describe Nitzschia anatoliensis Górecka, Gastineau & Solak sp. nov., an example of a diatom species inhabiting extreme habitats. The new species has been isolated and successfully grown from the highly alkaline Van Lake in East Turkey. The description is based on morphology (light and scanning electron microscopy), the sequencing...

Tigris and Euphrates rivers are transboundary rivers originated in Southeastern Anatolia region of Turkey and flow into Persian Gulf. These two river systems are one of the major drainage basins in southwestern Asia. Benthic diatoms are well environmental indicators in biomonitoring studies because of reacting rapidly to disturbance of water, e.g.,...

We sequenced the chloroplast genome of Poterioochromonas malhamensis (Pringsheim) R.A.Andersen strain SZCZR2049, which originates from Van Lake in Turkey. This genome is 133,923 bp long, and like those currently available for six phototrophic chrysophytes, it displays a long, gene-rich inverted repeat and a very short single-copy region. Compared t...

In this study, the diatoms of three alternative habitats (epilithon, epiphyton and artificial sub-strate) were compared to understand the differences in composition on artificial and natural sub-strates. For this purpose, the samples were collected weekly between 11th August and 2nd Septem-ber 2016 at a sampling site in a shallow marine lake, Mrtvo...

We explained the methodology used in setting the basic and supplementary measures for diffuse pollutants at Küçük Menderes Basin. As the majority of diffuse pollutants arise from livestock breeding and agricultural activities, we focused to propose measures regarded with tackling the pollution from agricultural activities. The types and distributio...

Turkish lakes have different morphometry and hydrology as a result of different climate types and noticeable altitude differences, which provide different habitats for algal diversity. In the last 40 years, the total number of algae taxa in the flora of Turkey has increased due to the studies on phytoplankton taxonomy and ecology. This study aims t...

There is an increasing number of taxonomic and ecologic studies on phytoplankton, one of the biological quality elements according to the EU Water Framework Directive, in Turkey day by day. Abstract We explained the methodology used in setting the basic and supplementary measures for diffuse pollutants at Küçük Menderes Basin. As the majority of di...

Turkish lakes have different morphometric and hydrological features as a result of different climates and noticeable altitude differences in Turkey that are necessary conditions to occur different habitats for algal diversity. The total number of algae taxa in the flora of Turkey has increased due to the growing number of studies on phytoplankto...

Turkish lakes have different morphometry and hydrology as a result of different climate types and noticeable altitude differences, which provide different habitats for algal diversity. In the last 40 years, the total number of algae taxa in the flora of Turkey has increased due to the studies on phytoplankton taxonomy and ecology. This study aim...

There is an increasing number of taxonomic and ecologic studies on phytoplankton, one of the biological quality elements according to the EU Water Framework Directive, in Turkey day by day. This study was carried on from 2017 to 2019 in 275 lakes lies in 25 river basins of Turkey with the aim of examining the taxonomy and biological diversity of th...

In this study, a total of 53 taxa were identified from 13 catchments in Turkey. Gomphonema affine var. rhombicum E.Reichardt, G. angusticephalum E.Reichardt & Lange-Bertalot, G. calcifugum Lange-Bertalot & E.Reichardt, G. elegantissimum E.Reichardt & Lange-Bertalot, G. exilissimum (Grunow) Lange-Bertalot & E.Reichardt, G. graciledictum E.Reichardt,...

Although planktonic algae are a basic component of freshwater ecosystems, studies on their diversity and species distribution are still not in satisfactory numbers. This study aims to contribute to Turkish freshwater algal flora particularly with the new records reported. A total of 158 Charophyta taxa were determined in the study conducted from...

This paper presents the first scanning electron microscope documentation and valve ultrastructure description of the rare species Craticula vixvisibilis var. distinctior Lange-Bertalot, and a description of the new species Craticula anatoliana sp. nov. Both species occurred in high electrolyte content, brackish maar-type lakes in the Inner Anatolia...

Background The Aegean Sea coast of Turkey hosts one of the most important nesting grounds for loggerhead sea turtles ( Caretta caretta ) in the Mediterranean Sea. Previous studies have revealed that the sea turtle carapace provides favourable conditions for various epibiontic organisms. Epibionts occurring on the carapace have been examined from di...

Diatoms are one of the components in the littoral zone and the most productive in terms of O 2 production and primary production. Despite their importance in these coastal ecosystems, the diatoms of littoral zones of Turkish coastlines have been understud-ied. In this report, we document the littoral diatoms from Dalyan Iztuzu Beach at the southeas...

The Sakarya River basin is one of the largest basins in Turkey, and encompasses the Kocaeli, Düzce, Sakarya, Bursa, Bilecik, Bolu, Kütahya, Eskişehir, Ankara, Afyon, and Konya provinces. In this study, the water quality status of the basin was investigated using 18 diatom indices, calculated in Omnidia software. For this purpose, a total of 46 stat...

The Ergene River is the most significant fluvial ecosystem located in the Thrace Region of Turkey. But it is being exposed to an intensive organic – inorganic pollution by means of agricultural – industrial applications conducted around its basin. In this research, the epipelic (EPP) diatoms of the Ergene River were investigated and the water quali...

Diatoms are one of the components in the littoral zone and the most productive in terms of O2 production and primary production. Despite their importance in these coastal ecosystems, the diatoms of littoral zones of Turkish coastlines have been understudied. In this report, we document the littoral diatoms from Dalyan Iztuzu Beach at the southeast...

The genus Nupela Vyverman & Compère comprises 81 species, which have been reported from different continents. This study presents the morphological characteristics of Nupela brevistriata sp. nov. found in moss samples collected from soil and tree bark in Southeast Asia, on the islands of Palambak and Sumatra. Light and scanning electron microscope...

The Meriç River is one of the longest rivers of the Balkans and the Tunca River is the most significant tributary of the Meriç River. In the present study, the epipelic diatoms of the Meriç and Tunca Rivers were investigated and the water quality was evaluated from a physicochemical and biological perspective. Epipelic (EPP) diatoms were collected...

This book is the first source of both the freshwater and marine algal flora of Turkey. In total, 3690 taxa (species and infraspecies level) were recorded.

Diatoms (important representatives of phytobenthos) are ecologically significant quality elements for rivers and lakes according to the EU Water Framework Directive (2000/60/EC). We aimed to investigate common diatoms of Gediz River Basin within the scope of the studies for preparation of Gediz River Basin Management Plan. Samples were collected fr...

The family of Bacillariaceae Ehrenberg is a group of well-known raphid diatoms, associated with water quality. Our current knowledge of the species diversity of this group in Turkey is still incomplete. There are three river basins in the Kütahya region in Turkey, located in the eastern part of the country, including the Gediz, Sakarya and Susurluk...

Mofette is a name applied to a volcanic discharge consisting chiefly of carbon dioxide, often associated with other vapours, representing the final phase of volcanic activity. A characteristic feature of these mofette is high concentration of iron compounds, resulting in accumulation of reddish-brown deposits. The average ferrous ion concentration...

The marine diatom Olifantiella Riaux–Gobin et Compère predominantly occurs in tropical Indo– Pacific coral reef environments. The genus has about a dozen validly published taxa and is characterized by transapically elongate striae composed of a macroareola, broad perforated girdle, and tubular buciniportula process of trumpet–shape. The valve mantl...

We describe as new to science six new species of the diatom genus Gomphonema Ehrenberg from Lake Baikal, based on light and scanning electron microscope observations. The six species are morphologically similar to G. ventricosum, a northern European taxon known mostly from Scotland, Scandinavia and other Baltic countries, though it has been recogni...

Olifantiella expanding biogeography

Although there are many studies on the diatoms, the most important represantatives of phytobenthos, the distribution of diatom composition is still a new issue in Turkey. This study aims to investigate the distribution of benthic diatom composition in Küçük Menderes River Basin. Samples were collected from epilithon and epipelon substrates of 7 riv...

The diatoms are one of the most important groups of organisms for biomonitoring studies. In Turkey, most previous applications of diatoms to water quality monitoring have focused on the pennate diatoms, with almost no attention given to the centric forms. The paper presents the centric diatoms in some river catchments in Central Anatolia (Konya clo...

Algae are among the key organisms of aquatic ecosystems. While there have been a large number of important algological studies on different river basins in Turkey, the use of algae in biomonitoring is a new approach. Epiphytic and epilithic algae in the Melen River were studied between May 2003 and April 2004. A total of 148 taxa, with 101 belongin...

We describe as new to science six new species of the diatom genus Gomphonema Ehrenberg from Lake Baikal, based on light and scanning electron microscope observations. The six species are morphologically similar to G. ventricosum, a northern European taxon known mostly from Scotland, Scandinavia and other Baltic countries, though it has been recogni...

Iran is a large country with a great diversity of aquatic ecosystems including rivers, springs, shallow seas, lakes, waterfalls, lagoons, and wetlands. Despite the many types of aquatic habitats, there has been a limited study of the diatom flora. The purpose of this study is to present the diatom species and characterize their distribution in the K...

Marine benthic diatoms are important tools for food web and photosynthesis. In December 2012, epipelic diatom samples were taken from Akliman Bay, Sinop and were examined to determine the marine benthic diatom flora. As a result, 31 taxa from genus Amphora, Berkeleya, Biremis, Chamaepinnularia, Fallacia, Gomphonemopsis, Halamphora, Licmophora, Mast...

The first datas of Beysehir lake fisheries trace to 1915. Lake fisheries wasn't good managed until mid 1980's and the catchable stock more than harvested stock. The perch (Sander lucioperca) was introduced in 1978 and the balance of fish abundance was begun to change. Endemic and commercial fish species Chub (Squalis anatolicus) population was decr...

Diatoms are one of the key organisms used in biomonitoring studies and they occur in a wide variety of environments, exhibiting a broad range of tolerance to abiotic factors. Historically, the first freshwater diatom study in Turkey was conducted in 1844 by Ehrenberg based on the material collected from the Murat and Aras Rivers. Situated between l...

Diatoms are mostly characterized by their siliceous bipartite cell walls, forming a frustule. Diatoms are one of important groups for monitoring in lentic and lotic systems. Cymbelloid diatoms are one of the highest diversity in Turkish inland waters. In this study, the samples were collected from 25 stations from different habitats (epilithic, epi...

The first cymbelloid diatom, Cymbella cymbiformis C. Agardh was designated by Agardh in 1880. There were several but classical taxonomic contributions until the last quartile of the 20th century and the four genera were resident in the family; Cymbella, Encyonema and Reimeria. Just before and after the new millenium had arosed, the genera Encyonops...

Centric diatom taxa in the Cyclotella ocellata and C. comensis complexes show high morphological variability and often apparently continuous morphological transitions. In this study, we investigated natural assemblages of the C. ocellata/C. comensis complex from Hungarian and Croatian lakes and from Turkish streams using morphological and molecular...

We document the diversity of diatom taxa from the G. acuminatum and truncatum-capitatum species complexes in Lake Baikal using light and scanning electron microscopy. This investigation revealed four species new to Science, namely G. pseudacuminatum sp. nov., G. microlaticollum sp. nov., G. paracapitatum sp. nov., and G. microcapitatum sp. nov. In...

The Lake Eğirdir is the second largest freshwater lake of Turkey. It is located in city of Isparta and its vicinity and this area is also known as Turkish Lakes Region. It covers 480 km2 aquatic surface area and average water depth is about 7-8 m. Lake Eğirdir extends 50 km in N-S and 17 km in E-W directions. Narrowest part of the lake is about 1,5...

Simonsenia delognei is a diatom species which is relatively rarely recorded, but apparently widespread in Europe and other continents. This taxon has recently been discovered for the first time in springs of Central Poland, where it was found to occur abundantly. Somewhat later this species has also been identified and photographed in samples from...