Assessment of eutrophication in the Berdan River Basin (Türkiye) using various classification tools

ÖZGÜR ÖZBAY | İSMAİL AKÇAY | MEHMET TAHİR ALP

The trophic status of the Berdan River Basin was determined using univariate and multivariate classification tools. The results indicated that the water quality/ trophic status of a downstream section of the Berdan River was characterized as “poor/eutrophic” due to anthropogenic inputs from agricultural, industrial and domestic wastewater discharges. Strong and positive correlations between TRIX values and concentrations of eutrophication parameters suggest that nutrient enrichment of water in the Berdan River during its flow will result in further eutrophication in the coastal region of the N ...Daha fazlası

The Effects of Balanced Diets with Soy Bean Extract or Meat and Bone meal on Muscle and Liver Tissue Protein and Glycogen Levels of the Nile Tilapia (Oreochromis niloticus L.) Infected with Vibrio anguillarum

FERBAL ÖZKAN YILMAZ | KENAN ENGİN | ARZU ÖZLÜER HUNT

This study investigated the effects of balanced diets with solvent extracted soy bean and meat and bone meal on the levels of protein and glycogen in muscle and liver tissues of the Nile tilapia (Oreochromis niloticus L.) infected with Vibrio anguillarum. Compared to the control diet (fishmeal only), diets with solvent extracted soy bean (SBM) and meat and bone meal (MBM) significantly lowered (P

Stratification strength and light climate explain variation in chlorophyll a at the continental scale in a European multilake survey in a heatwave summer

MEHMET TAHİR ALP

To determine the drivers of phytoplankton biomass, we collected standardized morphometric, physical, and biological data in 230 lakes across the Mediterranean, Continental, and Boreal climatic zones of the European continent. Multilinear regression models tested on this snapshot of mostly eutrophic lakes (median total phosphorus [TP] = 0.06 and total nitrogen [TN] = 0.7 mg L−1), and its subsets (2 depth types and 3 climatic zones), show that light climate and stratification strength were the most significant explanatory variables for chlorophyll a (Chl a) variance. TN was a significant predict ...Daha fazlası

Ulva intestinalis (Linnaeus 1753) ve Sargassum vulgare (F. Furcatum (Kützing) J. Agardh1889) Ekstraktlarının Bazı Patojen Mikroorganizmalar Üzerindeki Antimikrobiyal Etkileri

MEHMET TAHİR ALP | DENİZ AYAS

Makroalgler biyolojik aktivitelerinden dolayı önemli bir yere sahiptir. Makroalglerin antimikrobiyal özelliklerinin belirlenmesi amacıyla yaptığımız çalışmada, yeşil algler (Chlorophyta)’den Ulva intestinalis, kahverengi algler (Phaeophyceae)’den Sargassum vulgare türleri kullanılmıştır. Ekstraksiyon olarak aseton, etanol, kloroform ve metanol kullanılarak makroalglerin kuyucuk difüzyon ve spektrofotometrik broth mikrodilüsyon yöntemi ile gram pozitif bakteri suşlarından Staphylococcus aureus, Enterococcus faecalis, gram negatif bakteri suşlarından Escherichia coli ve Klebsiella pneumoniae’e v ...Daha fazlası

Accumulation and Elimination of Cadmium by the Nile Tilapia (Oreochromis niloticus) in differing Temperatures and Responses of Oxidative Stress Biomarkers

FAHRİ KARAYAKAR | BEDİİ CİCİK

The aims of this study were to investigate the accumulation (15 days) and elimination (15 and 30 days) of cadmium (Cd) in the liver, gill, kidney and muscle of Oreochromis niloticus following exposures to different concentrations (1 and 2 mg/L) of Cd at different water temperatures (20, 25, 30 o C). Additionally, responses of oxidative stress biomarkers (superoxide dismutase, SOD; catalase CAT; glutathione peroxidase, GPx and malondialdehyde, MDA) of the liver were determined following Cd exposures. In accumulation period, Cd levels increased significantly in all the tissues at all temperature ...Daha fazlası

THE EFFECTS OF DIFFERENT DIETARY PROTEIN AND LIPID LEVELS AND OIL SOURCES ON THE GROWTH PERFORMANCE AND BODY COMPOSITION OF RAINBOW TROUT (ONCORHYNCHUS MYKISS, W.)

MURAT BİLGÜVEN

Nutrient inputs from two major rivers into the cilician basin of the north-eastern Mediterranean Sea.

MEHMET TÜRKERİ | SUAT MARANKOZ | ÖZGÜR ÖZBAY | İSMAİL AKÇAY | MEHMET TAHİR ALP

In this study, dissolved nutrients concentrations were measured monthly at downstream points of the two regional rivers (the Berdan and Göksu rivers) flowing into the Cilician Basin of the North-eastern (NE) Mediterranean Sea.The dissolved nutrients data obtained between September 2021 and August 2022 were used to determine riverine nutrient fluxes. This study showed that spatial and temporal variations were recorded in nutrients concentrations of the two regional rivers with the maximum values consistently recorded in the Berdan River having lower volume fluxes.The annual nutrient inputs of t ...Daha fazlası

EKOLOJİK SU ÜRÜNLERİ YETİŞTİRİCİLİĞİ

MURAT BİLGÜVEN

Tarımsal üretimde bugüne kadar ana hedef genellikle üretim artışı ol¬muştur. Kantitatif üretim artışının yanında, ürün kalitesinin artırılması, üretim girdilerinin azaltılması, doğal kaynakların korunması, insan, hayvan ve çevre sağlığı gibi konular hep ikinci planda kalmıştır. Geleneksel tarım yöntemlerinin uygulandığı sanayileşmiş birçok Avrupa ülkesinde, ekolojik denge alt üst olmuş, buna bağlı olarak insan sağlığı bozul¬muş, birçok canlı türünün nesli tükenme tehlikesiyle karşı karşıya kalmıştır. Çiftçiler ve tüketiciler, geleneksel tarım uygulamalarında (bitkisel ve hayvansal üretim) kull ...Daha fazlası

Ekolojik Organik Tarımda Hayvancılık

MURAT BİLGÜVEN

Tarımsal üretimde bugüne kadar ana hedef genellikle üretim artışı olmuştur. Kantitatif üretim artışının yanında, ürün kalitesinin artırılması, üretim girdilerinin azaltılması, doğal kaynakların korunması, insan, hayvan ve çevre sağlığı gibi konular hep ikinci planda kalmıştır. Geleneksel tarım yöntemlerinin uygulandığı sanayileşmiş birçok Avrupa ülkesinde, ekolojik denge alt üst olmuş, buna bağlı olarak insan sağlığı bozulmuş, birçok canlı türünün nesli tükenme tehlikesiyle karşı karşıya kalmıştır, Çiftçiler ve tüketiciler, geleneksel tarım uygulamalarında (bitkisel ve hayvansal üretim) kullan ...Daha fazlası

Balık beslemede çinko

MURAT BİLGÜVEN

Balık Ununun Bir Kısmı Yerine Tam Yağlı Soya Kullanımının Gökkuşağı Alabalığı Oncorhynchus Mykiss W 1792 Yemlerinde İlave Sentetik Amino Asit Ve Veya Dikalsiyum Fosfat Kullanılmasının Besi Performansı Üzerine Etkisi

MURAT BİLGÜVEN

Effects Of The Feeds Containing Different Plant Protein Sources On Growth Performance And Body Composition Of Rainbow Trout (Oncorhynchus mykiss W )

MURAT BİLGÜVEN | MUSTAFA BARIŞ

In this study, a total of 720 rainbow trout (Oncorhyncus mykiss) having 50.08±0.19 g of average initial weight were used to compare of usage of the soybean meal, sunflower meal, canola meal and cottonseed meal as the best plant protein source. Four different feeds which contain soybean meal (SBM), canola meal (CM), sunflower meal (SFM) and cotton seed meal were used, respectively. Four trial groups were tested in triplicate during 12 weeks. Experimental diets were prepared as isonitrogenous significantly difference among the groups for average feed consumption, condition factor and survival ra ...Daha fazlası