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Öğe Additions to the Knowledge of Alien Molluscs of the Aegean Sea with Three New Records: Crepidula fornicata (Linnaeus, 1758), Anadara natalensis (Krauss, 1848) and Arcuatula senhousia (Benson in Cantor, 1842)(Central Fisheries Research Inst, 2014) Dogan, Alper; Ozturk, Bilal; Bakir, Banu Bitlis; Onen, MesutWithin the frame of surveys conducted in Izmir Bay (Aegean Sea) in November 2008, April 2009 and April-May 2012, three alien molluscs (Crepidula fornicata, Anadara natalensis and Arcuatula senhousia) have been recorded. Of the identified species, A. senhousia is new record for the Aegean Sea and the Turkish mollusc fauna, A. natalensis is new record for the Aegean Sea fauna, and the calyptraeid gastropod C. fornicata is new report for the Turkish mollusc fauna.Öğe Alien Marine Molluscs along the Turkish Coast, with a New Record of Varicopeza pauxilla (A. Adams, 1855) (Mollusca: Gastropoda) from the Mediterranean Sea(Inst Zoology, Bas, 2017) Ozturk, Bilal; Bitlis, Banu; Dogan, Alper; Turkcu, NeslihanThis study deals with the alien mollusc species recorded along the Turkish coast after the last checklist published in 2014. Six species (Lodderia novemcarinata, Eratoena sulcifera, Zafra obesula, Z. pumilla, Retusa desgenetti, and Martesia striata) were added to the alien mollusc fauna of the Levantine coast of Turkey, two species (Leucotina natalensis and Pyrunculus fourierii) were recorded along the Aegean coast of Turkey and one species (Arcuatula senhousia) was found in the Sea of Marmara. The present study is also the first report of Varicopezapauxilla (Gastropoda: Cerithiidae) from the Mediterranean Sea. This gastropod species, which originates from the Indo-West Pacific Ocean, was found in Iskenderun Bay (Levantine coast of Turkey). With the above-mentioned species, the total number of alien molluscs along the Turkish coast amounts to 125 species.Öğe Checklist of Echinodermata from the coasts of Turkey(Tubitak Scientific & Technical Research Council Turkey, 2014) Oztoprak, Basak; Dogan, Alper; Dagli, ErtanAccording to the benthic studies on echinoderms inhabiting the coasts of Turkey, a total of 91 echinoderm species belonging to 5 classes have been reported. The Aegean Sea coast is represented by the highest number of species (76 species), followed by the Sea of Marmara (64 species), the Levantine Sea (51 species), and the Black Sea (17 species). Sixty-six echinoderm species were found on soft substrata, while 8 species were reported on hard substrata and 17 species on both soft and hard substrata. The majority of the echinoderm species (83 species) were found at depths ranging from 11 to 50 m, while a small number of species (8 species) were reported from the deeper bottoms (>600 m). Six echinoderm species (Asterias rubens, Amphiodia (Amphispina) obtecta, Ophiactis macrolepidota, Ophiactis savignyi, Diadema setosum, and Synaptula reciprocans) were regarded as alien species.Öğe CIGESMED for divers: Establishing a citizen science initiative for the mapping and monitoring of coralligenous assemblages in the Mediterranean Sea(Pensoft Publ, 2016) Gerovasileiou, Vasilis; Dailianis, Thanos; Panteri, Emmanouela; Michalakis, Nikitas; Gatti, Giulia; Sini, Maria; Dimitriadis, Charalampos; Issaris, Yiannis; Salomidi, Maria; Filiopoulou, Irene; Dogan, Alper; d'Avray, Laure Thierry de Ville; David, Romain; Cinar, Melih Ertan; Koutsoubas, Drosos; Feral, Jean-Pierre; Arvanitidis, ChristosBackground Over the last decade, inventorying and monitoring of marine biodiversity has significantly benefited from the active engagement of volunteers. Although several Citizen Science projects concern tropical reef ecosystems worldwide, none of the existing initiatives has yet specifically focused on their Mediterranean equivalents. Mediterranean coralline reefs, known as "coralligenous", are bioherms primarily built by calcifying rhodophytes on hard substrates under dim-light conditions; they are considered hotspots of biodiversity and are extremely popular among divers due to their complex structure, conspicuous biological wealth and high aesthetic value. Nevertheless, data on their distribution, structure and conservation status is lacking for several Mediterranean areas while they are vulnerable to an increasing number of threats. New information In the framework of CIGESMED SeasEra (ERAnet) project a specialized Citizen Science project was launched, aiming to engage enthusiast divers in the study and monitoring of Mediterranean coralligenous assemblages through the gathering of basic information regarding their spatial occurrence, assemblage structure and associated pressures or threats. For its active implementation, a data collection protocol and a multilingual website were developed, comprising an educational module and a data submission platform. Georeferenced data reporting focuses on: (a) basic topographic and abiotic features for the preliminary description of each site, and the creation of data series for sites receiving multiple visits; (b) presence and relative abundance of typical conspicuous species, as well as (c) existence of pressures and imminent threats, for the characterization and assessment of coralligenous assemblages. A variety of tools is provided to facilitate end users, while divers have the choice to report additional information and are encouraged to upload their photographs. The long-term goal is the development of an active community of amateur observers providing widespread and ecologically significant data on coralligenous assemblages.Öğe Contribution to the knowledge of the molluscan fauna of Kusadasi Bay (Aegean Sea)(Tubitak Scientific & Technical Research Council Turkey, 2017) Bitlis, Banu; Ozturk, Bilal; Dogan, AlperThe present study was carried out in order to determine the molluscan species distributed in Kusadasi Bay. The investigated material was collected from different biotopes at 11 stations at varying depths between 0 and 180 m; it was sampled in the years 2000 and 2005 by using a van Veen grab and a dredge, and randomly by snorkeling. The study resulted in 134 molluscan species determined in Kusadasi Bay. Among them, Septifer cumingii Recluz, 1849 and Mytilaster solidus Monterosato, 1883 are new records for the Aegean coast of Turkey. Of the identified species, Bittium latreillii (Payraudeau, 1826) (1401 ind.), Musculus costulatus (Risso, 1826) (773 ind.), Bittium reticulatum (da Costa, 1778) (330 ind.), Columbella rustica (Linnaeus, 1758) (140 ind.), Rissoa similis Scacchi, 1836 (81 ind.), and Tricolia pullus pullus (Linnaeus, 1758) (59 ind.) are widely distributed in the bay, whereas the other species have a restricted distribution. Some ecological characteristics with distributional features of the identified species are also given in the present study.Öğe CRUSTACEA DECAPODA ASSOCIATED WITH BRACHIDONTES PHARAONIS (P. FISCHER, 1870) (MOLLUSCA, BIVALVIA) BEDS FROM THE LEVANTINE COASTS OF TURKEY(Brill Academic Publishers, 2008) Dogan, Alper; Oezcan, Tahir; Bakir, Kerem; Katagan, TuncerThe spatial distribution of the decapod crustacean fauna associated with Brachidontes pharaonis (Mollusca, Bivalvia) beds from the Levantine coasts of Turkey was studied in September 2005. Triplicate samples were collected by means of a quadrate sampler covering 400 cm(2) at nine intertidal stations located between Iskenderun Bay and Antalya Bay. A total of 13 species, represented by 61 individuals was identified. Among these, Pachygrapsus marmoratus was the most dominant species represented with 19 individuals. P. marmoratus and Pilumnus hirtellus were the most frequent decapod species on the mussel beds with 25.9% occurrence.Öğe Current status (as of end of 2020) of marine alien species in Turkey(Public Library Science, 2021) Cinar, Melih Ertan; Bilecenoglu, Murat; Yokes, M. Baki; Ozturk, Bilal; Taskin, Ergun; Bakir, Kerem; Dogan, AlperThe 2020's update of marine alien species list from Turkey yielded a total of 539 species belonging to 18 taxonomic groups, 404 of which have become established in the region and 135 species are casual. A total of 185 new alien species have been added to the list since the previous update of 2011. The present compilation includes reports of an ascidian species (Rhodosoma turcicum) new to the marine fauna of Turkey and range extensions of six species. Among the established species, 105 species have invasive characters at least in one zoogeographic region, comprising 19% of all alien species. Mollusca ranked first in terms of the number of species (123 species), followed by Foraminifera (91 species), Pisces (80 species) and Arthropoda (79 species). The number of alien species found in seas surrounding Turkey ranged from 28 (Black Sea) to 413 (Levantine Sea). The vectoral importance of the Suez Canal diminishes when moving from south to north, accounting for 72% of species introductions in the Levantine Sea vs. only 11% of species introductions in the Black Sea. Most alien species on the coasts of Turkey were originated from the Red Sea (58%), due to the proximity of the country to the Suez Canal. Shipping activities transported 39% of alien species, mainly from the Indo-Pacific area (20%) and the Atlantic Ocean (10%). Misidentified species (such as Pterois volitans, Trachurus declivis, etc.) and species those classified as questionable or cryptogenic were omitted from the list based on new data gathered in the last decade and expert judgements. The documented impacts of invasive species on socio-economy, biodiversity and human health in the last decade as well as the legislation and management backgrounds against alien species in Turkey are presented.Öğe Decapod crustaceans new to the fauna of Cyprus(Brill Academic Publishers, 2008) Dogan, Alper; Ozcan, Tahir; Kirkim, Fevzi; Katagan, TuncerÖğe Exotic Polychaetes of a Sewage Pollution Influenced Lagoon (cardak Lagoon, Turkish Straits)(MDPI, 2023) Dagli, Ertan; Ates, Abdullah Suat; Acar, Secil; Buyukates, Yesim; Dogan, Alper; Bakir, Ahmet KeremThis paper includes three exotic polychaeta species, Hydroides dianthus (Verrill, 1873), Polydora cornuta Bosc, 1802, and Pseudopolydora paucibranchiata (Okuda, 1937), found during benthic samplings in cardak Lagoon (Turkish Straits). The sampling was collected from the sandy and silty bottoms known to be polluted by sewage discharges. A total of 45 specimens of exotic polychaetes (H. dianthus: 1; P. cornuta: 4; P. paucibranchiata: 40) were found. The correlation values between the annual average values of the nutrients and the polychaeta abundance showed that the highest positive relationships with the abundance were between sand content, total phosphate, and pH. P. cornuta was the most observed species with a frequency index value of 75%, while H. dianthus was represented with a single species in the study area. Albeit the previous studies, P. paucibranchiata was observed most abundantly in the sampling station having low organic matter amounts. The study showed that opportunistic polychaetes observed in cardak Lagoon mostly preferred organically poor sediments.Öğe THE FIRST RECORD OF CHELONIBIA TESTUDINARIA (LINNAEUS, 1758) (CIRRIPEDIA, CHELONIBIIDAE) ON THE TURKISH AEGEAN COAST(Brill Academic Publishers, 2015) Dogan, Alper; Bakir, Kerem; Katagan, TuncerÖğe LONG-TERM CHANGES IN THE TRANSITIONAL COMMUNITY OF DETRITIC BOTTOMS IN THE NORTHERN ADRIATIC SEA: DYNAMICS OF BIVALVE ASSEMBLAGES(Parlar Scientific Publications (P S P), 2012) Nerlovic, Vedrana; Hrs-Brenko, Mirjana; Dogan, AlperBenthic fauna is an important component in marine ecosystems. Due to their relatively sessile habit, benthic macrofauna can serve as an indicator of changes in the marine environment caused by natural or anthropogenic disturbances. This study is primarily focused on the long-term natural variability of the diversity, biotic and multimetric indices, through the use of prolonged data collection (1989-1991 and 2003-2009) on bivalve assemblages in the transitional community of detritic bottoms in the northern Adriatic Sea. With regards to faunistic composition, Cluster and Abundance Comparison analyses were used to assess the recruitment and fluctuations in the quality of bivalve assemblages during the investigated periods. The results of univariate and multivariate analyses clearly distinguished three separate groups (1990-1991, 2003-2006 and 2007-2009) from aforementioned periods during which the research was conducted. Furthermore, this study also discusses the temporal variability in bivalve diversity, which is due to the ecological status of the investigated area in the northern Adriatic Sea.Öğe Macro-benthic invertebrates associated with the black sponge Sarcotragus foetidus (Porifera) in the Levantine and Aegean Seas, with special emphasis on alien species(Academic Press Ltd- Elsevier Science Ltd, 2019) Cinar, Melih Ertan; Bakir, Kerem; Dogan, Alper; Acik, Sermin; Kurt, Guley; Katagan, Tuncer; Kirkim, FevziThe fauna associated to the sponge Sarcotragus foetidus was studied in two eco-regions of the Mediterranean Sea, the Aegean and Levantine Seas. A total of 134 species belonging to 8 taxonomic groups were determined. Different species assemblages were encountered in the eco-regions, mainly due to the importance of some alien species (Red Sea invaders) on sponge communities. Among community parameters, only the number of species differed significantly among the sub-regions. the number of species and the number of individuals were significantly and positively correlated with the sponge volume. the species assemblage patterns determined were significant correlated with a set of environmental variables such as nitrogen, phosphate and dissolved oxygen. Some alien species such as the ophiuroid Ophiactis savignyi and the polychaete Leonnates indicus densely invaded porous systems of sponges in the Levantine Sea, indicating the magnitude of impacts of alien species on the eastern Mediterranean ecosystem. in the Levantine Sea, the alien species accounted for 34% of total number of individuals of macro-invertebrates associated with sponges, but the percentage rose up to 64% in Iskenderun Bay (eastern-most point of studied area). the biotic index ALEX detected a moderate ecological status in the area in terms of the impacts of alien species on native biodiversity.Öğe Macrobenthic fauna associated with the invasive alien species Brachidontes pharaonis (Mollusca: Bivalvia) in the Levantine Sea (Turkey)(Cambridge Univ Press, 2017) Cinar, Melih Ertan; Bakir, Kerem; Ozturk, Bilal; Katagan, Tuncer; Dogan, Alper; Acik, Sermin; Kurt-Sahin, Guley; Ozcan, Tahir; Dagli, Ertan; Bitlis-Bakir, Banu; Kocak, Ferah; Kirkim, FevziThe invasive alien mytilid species, Brachidontes pharaonis, forms a biogenic habitat in the mediolittoral and upper-infralittoral zones of the Levantine Sea, hosting a number of alien and native species. Examinations of samples taken from dense, continuous mussel beds at seven stations along the coast of northern Levantine Sea yielded 187 macro-benthic invertebrate species belonging to 11 taxonomic groups. Polychaeta accounted for 46% and 37% of the total number of species and individuals, respectively. The top three dominant species in the mussel beds were Stenothoe gallensis, Spirobranchus kraussi and Mytilaster minimus. The species with the highest frequency values on the mussel beds were Pseudonereis anomala, Phascolosoma stephensoni and Elasmopus pocillimanus. The highest density and biomass of the associated fauna were estimated as 42,550 ind m(-2) and 1503 wwt g m(-2), respectively. The species number in samples varied between 14 and 47 species. The environmental variables best explaining variations in zoobenthic community structures were salinity, dissolved oxygen and total inorganic nitrogen in the water column. The biotic indices, TUBI and ALEX, classified the ecological status of one or two stations as moderate or poor, based on the relative abundances of ecological and zoogeographic groups, respectively. A total of 21 alien species were found to be associated with the mussel bed, of which Syllis ergeni is being newly considered as a new established alien species for the Mediterranean Sea. The maximum density of associated alien species was calculated as 30,300 ind m(-2). The alien species assemblages were greatly affected by salinity and total inorganic nitrogen.Öğe Marine molluscs of the Turkish coasts: an updated checklist(Tubitak Scientific & Technical Research Council Turkey, 2014) Ozturk, Bilal; Dogan, Alper; Bitlis-Bakir, Banu; Salman, AlpThis study presents the molluscan species diversity along the Turkish coasts. The compilation of the available references revealed a total of 1065 species belonging to 7 classes (Caudofoveata, Solenogastres, Polyplacophora, Gastropoda, Bivalvia, Scaphopoda, and Cephalopoda). Most of the reported species belong to the class Gastropoda (706 species), followed by Bivalvia (279 species), Cephalopoda (50 species), Polyplacophora (17 species), Scaphopoda (10 species), Caudofoveata (2 species), and Solenogastres (1 species). Among the coasts of Turkey, the highest number of molluscan species was recorded from the Aegean Sea (825 species), followed by the Levantine Sea (807 species), Sea of Marmara (537 species), and the Black Sea (155 species). Of the 1065 mollusc taxa, 118 species are alien ones that originated outside the Mediterranean Sea. Among the listed species, Timoclea roemeriana (Bivalvia), and Sepiola ligulata and Abraliopsis morisii (both from Cephalopoda) are new records for the Turkish mollusc fauna, 11 species of the classes Polyplacophora, Gastropoda, and Bivalvia (Leptochiton boettgeri, Cerithium protractum, Similiphora similior, Cerithiopsis diadema, Rissoa guerinii, Crepidula moulinsii, Crepidula unguiformis, Bela zenetouae, Doto coronata, Lima marioni, and Limaria loscombi) are new reports for the Levantine coast of Turkey, and 2 gastropod species (Acirsa subdecussata and Monotygma lauta) are new reports for the Aegean coast of Turkey. Among the listed taxa, 27 species have been classified in the IUCN Red List or Barcelona/Bern Conventions.Öğe Mollusc Fauna of Iskenderun Bay and Checklist of the Region(Central Fisheries Research Inst, 2012) Bakir, Banu Bitlis; Ozturk, Bilal; Dogan, Alper; Onen, MesutThis study was performed to determine the molluscs distributed in Iskenderun Bay (Levantine Sea). For this purpose, the material collected from the area between the years 2005 and 2009, within the framework of different projects, was investigated. The investigation of the material taken from various biotopes ranging at depths between 0 and 100 m resulted in identification of 286 mollusc species and 27.542 specimens belonging to them. Among the encountered species, Vitreolina cf perminima (Jeffreys, 1883) is new record for the Turkish molluscan fauna and 18 species are being new records for the Turkish Levantine coast. A checklist of Iskenderun mollusc fauna is given based on the present study and the studies carried out beforehand, and a total of 424 moluscan species are known to be distributed in Iskenderun Bay.Öğe On the occurrence of Pinctada radiata (Mollusca: Bivalvia: Pteriidae), an alien species in Croatian waters(Inst Oceanografiju I Ribarstvo, 2008) Dogan, Alper; Nerlovic, VedranaTwo specimens of lessepsian bivalve Pinctada radiata were encountered in a benthic study conducted at a depth of 59 m on a silty-sand bottom in the northern Adriatic Sea, Croatia, in April 2006. This is the first record of the species in the Croatian part of Adriatic Sea.Öğe On the occurrence of Rhomboidella prideaux (Leach, 1815) (Mollusca : Bivalvia : Mytilidae) in the eastern Mediterranean(Calif Malacozoological Soc Inc, 2006) Ozturk, Bilal; Poutiers, Jean-Maurice; Onen, Mesut; Dogan, AlperIn a study performed in 2000 on the benthic fauna inhabiting the Turkish coasts of the Aegean Sea, a small less known Mytilidae species, Rhomboidella prideaux (Leach, 1815), which has not been reported from the eastern Mediterranean so far, was found. In the present study, the taxonomic, ecological and distributional aspects of this species, based on the material collected from the Aegean Sea and the eastern coast of Sicily, are provided.Öğe Ptenoglossa species (Mollusca : Gastropoda) distributed along the Turkish coast of the Aegean Sea(Tubitak Scientific & Technical Research Council Turkey, 2008) Oztuerk, Bilal; Dogan, Alper; Bitlis, Banu; Onen, MesutThis study was performed to determine Ptenoglossa species (Mollusca, Gastropoda) distributed along the Turkish coastline of the Aegean Sea. The examination of samples, taken between 1995 and 2005 from various biotopes and depths up to 300 m, yielded 249 specimens and 130 shells, belonging to 33 ptenoglossate species, of which Monophorus thiriotae Bouchet 1984, Similiphora similior (Bouchet and Guillemot 1978), Cerithiopsis diadema Monterosato 1874, Cerithiopsis jeffreysi Watson 1885, Krachia tiara (Monterosato 1874), Punctiscala cerigothana (Sturani 1896), Melanella boscii (Payraudeau 1826), and Nanobalcis nana (Monterosato 1878) were unrecorded from the Turkish coasts. Furthermore, M. thiriotae and K. tiara are new reports for the eastern Mediterranean Sea and the Aegean Sea fauna, respectively. This study also elucidates ecological characteristics of the species found and their distribution along the Turkish coasts. The photographs of newly reported species for the Turkish mollusc fauna are also given.Öğe Response to oxygen deficiency (depletion): Bivalve assemblages as an indicator of ecosystem instability in the northern Adriatic Sea(Walter De Gruyter Gmbh, 2011) Nerlovic, Vedrana; Dogan, Alper; Hrs-Brenko, MirjanaBenthic communities represent a powerful tool for the detection of natural and anthropogenic disturbances, as well as for the assessment of marine ecosystem stability. This paper shows that bivalve assemblages could serve as excellent indicators of disturbance and ecosystem instability. The goal of this study was to compare two sets of data in order to determine the differences between two different periods belonging to bivalve assemblage in the muddy detritic bottom of the northern Adriatic Sea in the post-anoxic period during December 1989, 1990, 1991 and quite a while later, during 2003, 2004 and 2005. Abundances of some indicator species such as Corbula gibba, Modiolarca subpicta and Timoclea ovata were detected during the post-anoxic period. Recruitment in the quality of bivalve assemblages was proved by the ecologic and biotic indexes during 2003, 2004 and 2005, during a period of relatively stable ecological conditions. Fluctuation in bivalve diversity due to the ecological quality of the marine ecosystem in the eastern part of the northern Adriatic Sea is also discussed.Öğe Review of marine alien isopods in Türkiye with two new records: of Paracerceis sculpta and Paranthura japonica(Natl Centre Marine Research, 2024) Dagli, Ertan; Bakir, Kerem; Gundeger, Gizem; Nerlovic, Vedrana; Dogan, AlperThis study focuses on the alien isopod species recorded in the Turkish seas. To date, two alien species ( Paradella dianae , Sphaeroma walkeri ) have been reported in the country, accounting for almost 2.4% of the total number of isopod species occurring in the Turkish seas. The faunistic analysis of benthic samples collected from Dardanelles (& Ccedil;anakkale) Straits and Izmir Bay revealed two new alien isopod species ( Paranthura japonica and Paracerceis sculpta ), on the Turkish coasts. Additionally, this is the first record of P. japonica in the Black Sea ecosystem. This study analyses and discusses the morphological, ecological and distributional characteristics of the species.