نتایج جستجو برای: aquae

تعداد نتایج: 266  

Journal: :Scientific reports 2015
Maria Antonietta Mariani Bachisio Mario Padedda Jan Kaštovský Paola Buscarinu Nicola Sechi Tomasa Virdis Antonella Lugliè

The aim of our study was to evaluate the abundance of cyanobacteria and microcystins in four Sardinian reservoirs (Italy) characterised by different trophic status to define a reference picture for future changes. Increasing levels of eutrophication and the abundance of cyanobacteria are expected to occur due to climate change, especially in the southern Mediterranean. Consequently, an in-depth...

Journal: :Revista de biologia tropical 2009
Okechukwu I Okogwu Alex O Ugwumba

The physicochemical variables and cyanobacteria of Mid-Cross River, Nigeria, were studied in six stations between March 2005 and August 2006 to determine the relationship between water quality and cyanobacteria abundance. Canonical Correspondence Analysis (CCA) showed that biological oxygen demand (BOD), dissolved oxygen, pH, water velocity, width and depth were important environmental factors ...

Journal: :international journal of environmental research 0
s. tong school of forestry and bio-technology, zhejiang forestry college, lin-an 311300, people’s republic of china s. tong school of forestry and bio-technology, zhejiang forestry college, lin-an 311300, people’s republic of china p. wang school of forestry and bio-technology, zhejiang forestry college, lin-an 311300, people’s republic of china j. chen college of biological and environmental engineering, zhejiang university of technology, hangzhou 310032, people’s republic of china

the toxicity of 7 herbicides to the three cyanobacteria was tested in this work. the results indicated that: (1) there was a highly significant relationship between dried weight or chlorophyll-a and od680nm for tested cyanobacteria; (2) the toxicity of the tested herbicides with the order from high to low was: photosynthesis-inhibiting > accase inhibitor > protox inhibiting herbicides; (3) the ...

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