Yazar "Tarkan, Ali Serhan" için TR-Dizin İndeksli Yayınlar Koleksiyonu listeleme
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Assessing the potential impact of nonnative fish on native fish by relative condition
Gaygusuz, Ozcan; Emiroglu, Ozgur; Tarkan, Ali Serhan; Aydin, Hamdi; Top, Nildeniz; Dorak, Zeynep; Baskurt, Sercan (Tubitak Scientific & Technical Research Council Turkey, 2013)Nonnative species (NNS) pose one of the most common threats to the conservation of biodiversity. Given the difficulty in measuring and documenting the specific impacts of introduced species on native species, indices of ... -
Conversions of total, fork and standard length measurements based on 42 marine and freshwater fish species (from Turkish water)
Gaygusuz, Özcan; Gürsoy Gaygusuz, Çiğdem; Özuluğ, Müfit; Tarkan, Ali Serhan; Acıpınar, Hasan; Bilge, Gökçen; Filiz, Halit (2006)Relationships between total (TL), fork (FL) and standard (SL) lengths belonging 19 families from Aegean and Marmara coast of Turkey were presented for 42 fish species. The relationships between TL, FL and SL were all linear ... -
Development of empirical standard weight equation for Pursak chub Squalius pursakensis, an endemic cyprinid species of Northwest Anatolia
Sulun, Sule; Baskurt, Sercan; Emiroglu, Ozgur; Giannetto, Daniela; Tarkan, Ali Serhan; Agdamar, Sevan; Cicek, Arzu (Tubitak Scientific & Technical Research Council Turkey, 2014)Indices of condition enable the evaluation of the well-being of fish, with the assumption that heavier fish of a given length are in a better condition. Relative weight (W-r) is one of these indices; it is calculated by ... -
The Diel Changes in Feeding Activity, Microhabitat Preferences and Abundance of Two Freshwater Fish Species in Small Temperate Streams (Omerli, Istanbul)
Gürsoy Gaygusuz, Çiğdem; Tarkan, Ali Serhan; Gaygusuz, Özcan (Foundation Environmental Protection & Research-Fepr, 2010)We examined the abundance, food and microhabitat use of Proterorhinus marmoratus (Gobiidae) and Cobitis vardarensis (Cobitidae) during both day and night in two small temperate streams of the Black Sea region (North-West ... -
Diurnal vertical distribution of zooplankton in a newly formed reservoir (Tahtalı Reservoir, Kocaeli): the role of abiotic factors and chlorophyll a
Although water level fluctuations and related environmental variations occurring within reservoirs have a considerable effect on the zooplankton community, studies on zooplankton dynamics of reservoirs are very limited. ... -
The ecology of freshwater bivalves in the Lake Sapanca basin, Turkey
Ercan, Ertan; Gaygusuz, Ozcan; Tarkan, Ali Serhan; Reichard, Martin; Smith, Carl (Tubitak Scientific & Technical Research Council Turkey, 2013)Despite the ecological importance and globally threatened status of freshwater bivalves, the freshwater mussel fauna of Turkey has hitherto received little attention. The aim of this study was to describe the ecology of ... -
Effects of streams on drinkable water reservoir: an assessment of water quality, physical habitat and some biological features of the streams
Tarkan, Ali Serhan (2010)Several water quality and hydrologic parameters were measured to determine the physical, chemical and biological characters of six streams which flow into the Ö merli Reservoir (İstanbul). It was aimed to investigate ... -
Growth and life history traits of a highly exploited population of non- native gibel carp, Carassius gibelio from a Large Eutrophic Lake (Lake Uluabat, NW Turkey): is reproduction the key factor for establishment Success?
Yabancı bir tür olan gümüşi havuz balığı, Carassius gibelio’nun aşırı bir avcılık baskısı ile avlandığı Uluabat Gölü’ndeki yerleşme başarısını anlayabilmek amacıyla, bu balığın biyolojik özellikleri ve populasyon yapısı ... -
Improving the ecological understanding of species complexes: the case of piscivory and protracted spawning in the carp gudgeon group Hypseleotris spp. (Eleotridae, Teleostei)
Vilizzi, Lorenzo; Tarkan, Ali Serhan (Tubitak Scientific & Technical Research Council Turkey, 2016)Species complexes are a common occurrence in freshwater fish assemblages and may often pose a challenge to the understanding of their ecology. A typical case is the 'cryptic' carp gudgeon group Hypseleotris spp. in ... -
Inter-tissue variability in the stable isotope values of European perch (Perca fluviatilis) and pumpkinseed (Lepomis gibbosus)
Tarkan, Ali Serhan; Kurtul, Irmak; Britton, J. Robert (EDP SCIENCES S A, 2023)Ecological studies on native and invasive populations of European perch Perca fluviatilis and pumpkinseed Lepomis gibbosus are often based on stable isotope (SI) analysis based on dorsal muscle, where samples are usually ... -
Invasion of freshwater bodies in the Marmara region (northwestern Turkey) by nonnative gibel carp, Carassius gibelio (Bloch, 1782)
Aydin, Hamdi; Gaygusuz, Ozcan; Tarkan, Ali Serhan; Top, Nildeniz; Emiroglu, Ozgur; Gaygusuz, Cigdem Gursoy (Tubitak Scientific & Technical Research Council Turkey, 2011)The aim of this study was to learn the invasion speed and sex ratio, which would be indicative of invasive character, of a nonnative fish species, gibel carp, by reporting its new localities in the Marmara region of ... -
Length–weight and length–length relationships for three endemic cyprinid species of the Aegean region (Turkey) with proposed standard weight equations
Gıannetto, Daniela; Tarkan, Ali Serhan; Akbaş, Ferit; Karakuş, Nildeniz Top; Ağdamar, Sevan; Karakuş, Uğur; Lorenzonı, Massimo (2015)Empirical standard weight equations and length–weight and length–length relationships were estimated for Barbus pergamonensis, Capoeta bergamae, and Ladigesocypris irideus, three endemic cyprinid species of Turkey that are ... -
A new locality for the freshwater fis Chondrostoma angorense Elvira, 1987 (Osteichtyes: Cyprinidae) in the Marmara Region (Turkey)
Marmara Bölgesi’nde (Türkiye) tatlısu balığı Chondrostoma angorense Elvira, 1987 (Osteichtyes: Cyprinidae) için yeni bir lokalite. Sakarya Nehri havzasından ilk Chondrostoma türü C. nasus olarak 1987 yılında rapor edildi. ... -
Occurrence of non-native fishes in a small Man-made lake (Lake Ula, Muğla): past, present, future perspectivs
Sulama amaçlı yapılmış olan ve yabancı tür aşılamalarına maruz kalan ve Ula Göleti’nin bazı fizko-kimyasal su özellikleri ve balık kondisyonu ile balık kompozisyonundaki değişimler incelenmiştir. Toplam altı farklı tür ... -
Ötrofik bir rezervuarda (Tahtalı, Kuzeybatı Türkiye) fizikokimyasal faktörler ve klorofil a’nın zooplanktonun günlük dikey dağılımına etkisi
Son yıllarda dünya çapında artış göstermesine rağmen, sulama amacıyla yapılan su kütlelerinde zooplankton komünitesinin bölgesel ve zamana bağlı değişimleri çok az ilgi görmüştür. Bu çalışmanın amacı, ötrofik bir rezervuarın ... -
Parasites of the common carp Cyprinus carpio L., 1758 (Teleostei: Cyprinidae) from water bodies of Turkey: updated checklist and review for the 1964-2014 period
Vilizzi, Lorenzo; Tarkan, Ali Serhan; Ekmekci, Fitnat Güler (Tubitak Scientific & Technical Research Council Turkey, 2015)A synopsis is provided of the parasites of common carp Cyprinus carpio L. from water bodies of Turkey based on literature data from 1964 to 2014. In total, 45 studies were included in the review and these provided data ... -
A Re-assessment of the Growth Index for Quantifying Growth in Length of Fish with Application to Roach, Rutilus rutilus (L., 1758)
Tarkan, Ali Serhan; Vılızzı, Lorenzo (2016)Balık populasyonları arasında boyca ortalama büyüme oranlarının karşılaştırmalı değerlendirmeleri özellikle yaygın dağılımları olan balıklarda türlerin kontrolü, yönetimi ve korunmasına yönelik bilgi edinme anlamında ... -
REOCCURRENCE OF A COMMERCIAL EURYHALINE FISH SPECIES, Atherina boyeri Risso, 1810 (Atherinidae) IN BÜYÜKÇEKMECE RESERVOIR (ISTANBUL, TURKEY)
Saç, Gülşah; Gaygusuz, Özcan; Tarkan, Ali Serhan (2015)The big-scale sand smelt, Atherina boyeri Risso, 1810 was recorded for the first time from Bü yü kç ekmece Reservoir (İstanbul, Turkey) in 1982. However, recent studies on the fish fauna of Bü yü ... -
Spatiotemporal distribution, abundance, and species–environment relationships of Scyphozoa (Cnidaria) species in Hisarönü, Marmaris, and Fethiye bays (Muğla, Turkey)
This study was undertaken monthly between September 2011 and October 2012 at 10 stations in Hisarö nü , Marmaris, and Fethiye bays of Muğla Province with the aim of examining spatiotemporal patterns of distribution, ... -
Standard weight equations of two sub-/tropic nonnative freshwater fish, Clarias gariepinus and Oreochromis niloticus, in the Sakarya River Basin (NW Turkey)
Emiroğlu, Özgür; Başakurt, Sercan; Aksu, Sadi; Giannetto, Daniela; Tarkan, Ali Serhan (Tubitak Scientific & Technical Research Council Turkey, 2018)Clarias gariepinus and Oreochrornis niloticus are two hot-water fish species of African origin that have been recently reported to occur unnaturally in hot-water resources and springs in the Sakarya River Basin (northwestern ...