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Turkish Journal of Biology

Biomass

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Full-Text Articles in Life Sciences

Effects Of Gradual Soil Drought Stress On The Growth, Biomass Partitioning, And Chlorophyll Fluorescence Of Prunus Mongolica Seedlings, Youyan Guo, Hongyuan Yu, Dongsheng Kong, Fang Yan, Donghua Liu, Yajuan Zhang Jan 2015

Effects Of Gradual Soil Drought Stress On The Growth, Biomass Partitioning, And Chlorophyll Fluorescence Of Prunus Mongolica Seedlings, Youyan Guo, Hongyuan Yu, Dongsheng Kong, Fang Yan, Donghua Liu, Yajuan Zhang

Turkish Journal of Biology

The present studyaimed to determine the effects of gradual drought stress on Prunus mongolica seedlings. The growth and chlorophyll fluorescence of the seedlings were investigated under drought and control conditions. The short-term (21 day) decline in soil water content from 30.46% to 15.55% did not significantly influence the growth of P. mongolica seedlings but increased the height, basal diameter, crown, leaf number, stem mass, leaf mass, and root mass of the seedlings. The growth of the drought group reached the maximum, but remained lower than that of the control group, within 21 days. Compared with the control group, the drought …


Effect Of Cell-Conditioned Media On Biomass Production Of Leishmania Parasites, Melahat Bagirova, Rabi̇a Çakir Koç, Adi̇l Allahverdi̇yev, Meli̇ke Ersöz Jan 2012

Effect Of Cell-Conditioned Media On Biomass Production Of Leishmania Parasites, Melahat Bagirova, Rabi̇a Çakir Koç, Adi̇l Allahverdi̇yev, Meli̇ke Ersöz

Turkish Journal of Biology

A large amount of parasite biomass production necessitates a higher volume of culture media, and this further increases the overall cost. For this reason, novel and alternative culture supplementary materials have been continuously investigated. The aim of this study was therefore to evaluate the effect of cell-conditioned media, collected as waste material during routine cell culture, on the growth and development of Leishmania parasites in vitro. In this study, for the first time, we show that cell-conditioned medium obtained from MCF-7 culture increased the growth of Leishmania parasites in vitro. These results show that the metabolites that are present in …


Seasonal Variations In Phytoplankton Composition And Biomass In A Small Lowland River-Lake System (Melen River, Turkey), Tülay Baykal, İlkay Açikgöz, Abel U. Udoh, Kazim Yildiz Jan 2011

Seasonal Variations In Phytoplankton Composition And Biomass In A Small Lowland River-Lake System (Melen River, Turkey), Tülay Baykal, İlkay Açikgöz, Abel U. Udoh, Kazim Yildiz

Turkish Journal of Biology

A series of studies were carried out to determine the succession and phytoplankton community of the Melen River in the Western Black Sea region of Turkey. The study was conducted at 6 stations at monthly intervals between May 2003 and April 2004. It was observed that the abundance and biovolume of phytoplankton were low in winter, though higher values were recorded in late spring and summer. Among the values noted, the spring peak was 534.38 × 10^5 ind. L^{-1} and 7384.8 mm^3 L^{-1} belonging to Peridinium sp. The most common diatom, Cyclostephanos dubius, was favoured by low discharge at stations …


Phytoplankton Biomass And Species Composition Of Lake Gölbaşı (Hatay-Turkey), Mehmet Naz, Mustafa Türkmen Jan 2005

Phytoplankton Biomass And Species Composition Of Lake Gölbaşı (Hatay-Turkey), Mehmet Naz, Mustafa Türkmen

Turkish Journal of Biology

Seasonal distributions of phytoplanktonic organisms in Lake Gölbaşı were investigated in samples collected from 2 stations between May, 2001, and April, 2002. At each station, monthly sampling was performed from the surface water. The flora consisted of 41 taxa belonging to Bacillariophyta (24), Chlorophyta (12), Pyrrophyta (2), Cyanophyta (2) and Chrysophyta (1). During the 1-year study period, the most dominant group was Chrysophyta followed by Bacillariophyta, Chlorophyta, Cyanophyta and Pyrrophyta. The highest numbers of Chrysophyta were observed in both stations in May, 2001, January, 2002 and April, 2002. Bacillariophyta had the highest biomass in both stations, followed by Chrysophyta, Pyrrophyta, …


Effects Of Sewage Pollution The Structure Of The Community Of Ulva Lactuca, Enteremorpha Linza And Rocky Macrofauna In Dışliman Of Sinop, Levent Bat, Mehmet Akbulut, Murat Sezgi̇n, Mehmet Çulha Jan 2001

Effects Of Sewage Pollution The Structure Of The Community Of Ulva Lactuca, Enteremorpha Linza And Rocky Macrofauna In Dışliman Of Sinop, Levent Bat, Mehmet Akbulut, Murat Sezgi̇n, Mehmet Çulha

Turkish Journal of Biology

Untreated sewage and domestic wastes from the Sinop outfall enter the Dışliman region. The effect of this on the distribution of Ulva lactuca, Enteromorpha linza and benthic macrofauna and on enviromental parameters was determined. Increases in the growth of opportunistic green algae such as Ulva lactuca and Enteromorpha linzain response to increased nutrient supply in the Dışliman coastal ecosystems in Sinop are reported in the present study. The results of this study show that organic enrichment also increases, with Mytilus galloprovincialis (Mollusca), Erichthonius brasiliensis, Echinogammarus olivii and Amphitoes ramondi, Idotea baltica and Sphaeroma serratum(Crustacea) being the most abundant species.