460 research outputs found
A new sea-nettle from the Eastern Mediterranean Sea: Chrysaora pseudoocellata sp. nov. (Scyphozoa: Pelagiidae)
No full textMutlu, Erhan, Çağatay, I. Tulay, Olguner, M. Tunca, Yilmaz, Hasan Emre (2020): A new sea-nettle from the Eastern Mediterranean Sea: Chrysaora pseudoocellata sp. nov. (Scyphozoa: Pelagiidae). Zootaxa 4790 (2): 229-244, DOI: https://doi.org/10.11646/zootaxa.4790.2.
Impact of using thiocolchicoside during endoscopic ureteral calculi removal: A preliminary study
No full textAtes, Erhan/0000-0002-9677-5673;WOS: 000366731000005PubMed: 26174074
Energetska varnost v času krize: študiji primera Bolgarije in Srbije
No full textThis thesis aims to assess the EU’s external energy policy and to what degree it has been embraced by small states during the energy crisis by posing the question, “How does European Union membership influence the external energy policy decisions of small states within the foreign policy dimension during energy security crises?”. To answer this, the research is taking Bulgaria and Serbia as case studies due to their similar population sizes, GDP, and energy consumptions. This research conceptualizes energy security and energy diplomacy to understand how diplomacy and energy dependencies are interrelated and how this relationship can be utilised as a tool in international relations. Through supporting the qualitative work on foreign policy analysis with the quantitative analysis of the energy industry structures and energy dependencies of Serbia and Bulgaria in a comparative manner, this research is conducting mixed research on the issue. The comparison of Bulgaria and Serbia enables the author to analyse and understand the role of EU membership
Ecological distribution of semi-demersal fishes in space and time on the shelf of Antalya Gulf
No full textIn this study we provide a baseline data on semidemersal fish assemblages and biology in a heterogeneous and yet less studied portion of the shelf of Antalya Gulf. The distribution of fish abundance in three transects subjected to different fisheries regulations (fishery vs non fishery areas), and including depths of 10, 25, 75, 125, 200 m, was studied between May 2014 and February 2015 in representative months of winter, spring, summer and autumn seasons. A total of 76 fish species belonging to 40 families was collected and semidemersal species distribution was analyzed in comparison with the whole community. Spatial distribution of fish was driven mainly by depth and two main assemblages were observed: shallow waters (10-25; 75 m) and deep waters (125-200 m). Significant differences among transects were found for the whole community but not for the semidemersal species. Analysis showed that this was due to a strong relation of these species with local environmental characteristics rather than to a different fishing pressure over transects. Firstly all species distribute according to the bathymetrical gradient and secondly to the bottom type structure. Semidemersal species were then found more related to zooplankton and suspended matter availability. The main morphological characteristics, sex and size distribution of the target semidemersal species Spicara smaris (Linnaeus, 1758), Saurida undosquamis (Richardson, 1848), Pagellus acarne (Risso, 1827) were also investigated
İzmir Körfezi’nin (Ege Denizi) Farklı Sektörleri Boyunca Bulunan Epimegafaunanın Dağılımının Ekolojik Yönelimi
No full textDuring 2009-2010 epifaunal materials were collected seasonally with a beam trawl from seven fixed stations in the infralittoral of Gulf of Izmir to study spatiotemporal distribution of megabenthic fauna and their ecology. A total 153 megafaunal species were identified belonging to nine phyla, comprised mostly of 54 molluscans, 43 chordates (mostly fish), 20 arthropods, and 18 echinoderms. Nine alien species were recorded. Four species (two fish species, one gastropod and one Asteroidea species) were constant species and 16 species were common species in the study area. Lesueurigobius friesii, Buglossidium luteum, Turritellinella tricarinata and Astropecten irregularis were the most frequently occurred, and Lesueurigobius friesii, Varicorbula gibba, Anomia ephippium, Turritellinella tricarinata and Dentalium sp were the most abundantly occurred species. Excluding the evenness index, faunistic characteristics tended to increase as a factor of depth. Seasonal density (abundance and biomass) was minimal in April and maximal in February, followed by November having 2-fold higher abundance than that inJuly. Faunal assemblages were correlated with regions of the gulf and habitat type. Buglossidium luteum overspread the entire gulf excluding the inner gulf. Varicorbula gibba and Fulvia fragilis, a pollution indicator predominated the inner gulf. Hydrographical parameters and depth were associated to dictate faunal assemblages with difference among the sectors and habitats.Dağılımlarını ve ekolojilerini çalışmak için 2009-2010 yılları içerisinde İzmir Körfezinin infralittoral zonunda yer alan 7 ayrı ve sabit tutulan derinliklerden epifaunal materyalleri kirişli trol ile mevsimsel toplanmıştır. 9 filuma ait toplam 153 tür bulunmuştur ve bunların bir çoğu 54 tür Mollusca, 43 Chordata (çoğu balık türü), 20 Arthropoda ve 18 to Echinodermata filumlarına ait bulunmuştur. 9 tür yabancı tür olarak tespit edilmiştir. Dört tür (2 balık, 1 gastropod ve 1 Asteroidea türü) bölge için kalıcı ve 16 tür yaygın tür olarak tahmin edilmiştir. Lesueurigobius friesii, Buglossidium luteum, Turritellinella tricarinata ve Astropecten irregularis bölgede en sık, ve Lesueurigobius friesii, Varicorbula gibba, Anomia ephippium, Turritellinella tricarinata and Dentalium sp en bol bulunan türlerdir. Düzenlilik indeksi hariç, diğer faunistik karakterler deniz tabani derinliği ile artış eğilimdedir. Mevsimsel bolluk ve biyokütle Nisan ayında minimum ve Şubatta maksimum iken, bunu Temmuz ayındaki değerlerden iki katı değere sahip Kasım ayı takip etmiştir. Fauna topluluğu, körfezin bölgeleri ve habitatları ile ilişkili bulunmuştur. Buglossidium luteum iç bölge hariç körfezin her yerine yayılmıştır. Organik kirlilik göstergesi olan Varicorbula gibba ve Fulvia fragilis iç körfezde oldukça baskındır. Körfezin farklı bölgeleri ve dip yapısı yanında, hidrografik ve dip derinliği farklı faunal topluğun oluşumuna neden olmaktadır
Recent Occurrence of Rare Echeneis naucrates from the Turkish Mediterranean Coast
No full textOne specimen of live sharksucker was caught with a bottom trammel net in Taşucu Bay, south-eastern coast of Turkey, at 1 m depth on May, 2021. Meristic parameters were determined by fin ray counts and metric parameters were measured from the photos of the specimen. Excluding the recent record in Antalya Gulf, previous records of this species occurred later than May, generally in July in the Mediterranean Sea as well as in the Aegean Sea. The biometrical measurements were different in Taşucu Bay compared to those caught from the Aegean Sea and the central Mediterranean Sea (Tunisian and Sicilian waters), but relatively similar to those reported from Croatia. Major discriminative variables, albeit less significant in individuals from the central Mediterranean, were the number of anal, pectoral and dorsal fin rays. Numbers of suction disc laminae were higher in individuals from the central Mediterranean Sea and New Zealand than those from the Turkish coasts (all 21 disc laminae). The statistical analyses (Principal Component and Discriminant analyses) affirmed successful use of meristic parameters to differentiate the biometric characteristics of the species from the Aegean Sea, the central and eastern Mediterranean Sea. The length-weight relationship showed that the species had a negative allometric growth
Spatio-temporal diversity of Megistozoobenthos in the Antalya Gulf and relationships with environmental features
No full textAntalya Gulf is situated in the Levantine Sea, the second biggest and most eastern basin in the Mediterranean Sea. This area is an ultra-oligotrophic basin, strongly affected by anthropogenic inputs, in particular in the fishing areas. For this characteristic, in the Levantine Sea, there is a strong pressure on the natural resources and benthic assemblages. Furthermore, many alien species enter from Suez Canal and are well established in the area. All these pressures are leading to a degradation of the Levantine Sea. For this reason it is important to have tools to study and monitoring the functioning of the marine ecosystem. Benthic organisms are superior to many other biological groups for their response to environmental stresses. The variability of benthic assemblages on a site can reflect, in an integrative mode, the entire functioning of the marine ecosystem. In this study, that wants to analyze the spatial and temporal distribution of the benthic macrofaunal assemblages of Antalya Gulf, 90 benthic species divided in 8 taxa (Annelida, Cnidaria, Echinodermata, Echiura, Mollusca, Porifera, Sipunculida and Tunicata) were found. All the analyses conducted on the entire benthic class and later on Mollusca and Echinodermata separately highlighted the importance of depth on structuring benthic community
Investigation of Factors That May Affect the Commitment of Healthcare Professionals to Their Works During the COVID-19 Pandemic Period
No full textThe environment of uncertainty created by the COVID-19 pandemic period has caused difficulties especially for healthcare professionals in their work activities. The purpose of this research is to find out which variables might affect the commitment of healthcare professionals to their works during this COVID-19 period. Based on the data announced by the Ministry of Health during the pandemic in the first quarter of 2021, it was decided to conduct a research on doctors, nurses, caregivers, and medical secretaries working in hospitals in the cities of the Eastern Black Sea Region of Turkey which generally show high risk. In the developed research model, satisfactory conditions (SC), emotional commitment to change (ECC), and psychological ownership (PO) as variables that may directly or indirectly affect the commitment of healthcare professionals to their works (CW) were used. The Smart PLS program was used in the analysis of the research model and hypothesis. It was seen that the ECC of healthcare professionals has a positive and significant (.694; p .086). Looking at the indirect (intermediary) effects obtained as a result of the research, it was seen that all of the hypotheses consist of positive coefficients. This situation reveals that the mediating variables have complementary effects on the obtained results. © The Author(s) 2022.WOS:00078698580000
Bibliometric profile of articles published in the field of gastronomy (2013-2017)
No full textBu araştırmanın amacı Türkiye’de gastronomi alanında yazılmış makalelerin
bibliyometrik olarak incelenmesidir. Araştırmanın evrenini, Türkiye’de 2013-2017
yılları arasında gastronomi alanında yayınlanan makaleler oluşturmaktadır. 2013-
2017 yılları arasında 14 farklı dergide gastronomi alanında 202 makale tespit
edilmiş olup, bu makaleler toplam 443 yazar tarafından kaleme alınmıştır.
Çalışmada nitel araştırma yöntemi tercih edilmiş olup, verilerin analizinde betimsel
analiz yöntemi kullanılmıştır. Makaleler yayınlanan dergi, yıl, dil, anahtar kelime,
yazar sayısı, tema, araştırma metotları ve referans kaynakları gibi değişkenler ele
alınarak incelenmiştir. Araştırma sonuçlarına göre, makalelerin en çok Turizm ve
Gastronomi Araştırmaları dergisinde yayınlandığı, 2017 yılında gastronomi temalı
makalelerin sayıca fazla olduğu, makalelerin %46,5 oran ile en çok iki yazar
tarafından ortak yayınlandığı, en çok makale yayınlayan üniversitenin Gazi
Üniversitesi olduğu, makalelerin en çok “Gastronomi ve Yiyecek İçecek
Endüstrisi” temasında yazıldığı tespit edilmiştirThe aim of this research is to examine the bibliometric of articles written in Turkey
in the field of gastronomy. The universe of the study consists of articles published
in the field of gastronomy in Turkey between the years 2013-2017. 202 articles on gastronomy in 14 different journals between 2013 and 2017 have been identified
and these articles have been written by 443 authors. Qualitative research method
was preferred in this study and descriptive analysis method was used in data
analysis. Articles such as journal, year, language, keyword, author number, theme,
research methods and reference sources were examined. According to the results of
the research, the most of the articles were published in the Journal of Tourism and
Gastronomy Researches, in 2017 there were a large number of gastronomy-themed
articles. It has been found that it is written in the “Gastronomy and Food Beverage
Industry” theme
Diel vertical migration of Sagitta setosa as inferred acoustically in the Black Sea
No full textSwimming trajectories of chaetognaths Sagitta setosa Muller in the Black Sea were studied using an echosounder operating at 120 and 200 kHz and an acoustic Doppler current profiler (ADCP) operating at 150 kHz. S. setosa were acoustically discriminated with respect to vertical migration and swimming speed, according to dissolved oxygen (DO) concentration and the timing of migrations. S. setosa formed a concentration layer thicker than Calanus euxinus did (1-3 m). The migration was completed in about 2.5-4 h, upward migration starting before C. euxinus and downward migration after C. euxinus. Adult Sagitta swam fast only in the well-oxygenated layer (subsurface maximum DO). The DO was found to be a significant (p < 0.05) variable by partial correlation between the speed and hydrographical parameters. This feature constituted an oxygen-dependent influence on S. setosa's vertical swimming and distinguished S. setosa from C. euxinus. Chaetognaths migrated daily between the nearsurface and the oxycline or the suboxic zone (OMZ, see Fig. 3b for the layers characterized by DO). Whether the deepest depth limit of migration was the oxycline or the OMZ depended on the relative abundance of adult and immature (young) individuals in the concentration layer. In July and September, individuals belonging to a new generation did not migrate but stayed in subsurface water day and night
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