نتایج جستجو برای: salinity gradient

تعداد نتایج: 149647  

Journal: :international journal of maritime technology 0
seyed taleb hosseini iranian national institute for oceanography and atmospheric science vahid chegini iranian national institute for oceanography and atmospheric science masoud sadrinasab university of tehran seyed mostafa siadatmousavi iran university of science &technology sadegh yari iranian national institute for oceanography and atmospheric science

spatial measurements of conductivity, temperature and depth were used to study salinity variations along the principal channels of the tidal hypersaline creek network in the vicinity of bushehr port, persian gulf during three 25- tidal cycles in both warm and cold months. salinity variations and tidal fluctuations were out of phase throughout the short inverse estuary. the salinity values insid...

2015
Hanna G. Garland David L. Kimbro Anna R. Armitage

Coastal economies and ecosystems have historically depended on oyster reefs, but this habitat has declined globally by 85% because of anthropogenic activities. In a Florida estuary, we investigated the cause of newly reported losses of oysters. We found that the oyster reefs have deteriorated from north to south and that this deterioration was positively correlated with the abundance of carnivo...

Journal: :Jurnal ilmu dan teknologi kelautan tropis 2022

Musi estuary is the mouth of Telang and rivers directly adjacent to Bangka Strait. During flood (ebb) we see distribution salinity increases (decreases) which known through vertical using CTD. The TS diagram used water mass characteristics study area. Data-Interpolating Variational Analysis (DIVA) method interpolate visualize data from spatial temperature, density data. classification zone iden...

2001
JONATHAN D. NASH JAMES N. MOUM

Direct determination of the irreversible turbulent flux of salinity in the ocean has not been possible because of the complexity of measuring salinity on the smallest scales over which it mixes. Presented is an analysis of turbulent salinity microstructure from measurements using a combined fast-conductivity/temperature probe on a slowly falling vertical microstructure profiler. Four hundred pa...

2018
Gualtiero Spiro Jaeger Amala Mahadevan

Salinity, rather than temperature, is the leading influence on density in some regions of the world's upper oceans. In the Bay of Bengal, heavy monsoonal rains and runoff generate strong salinity gradients that define density fronts and stratification in the upper ~50 m. Ship-based observations made in winter reveal that fronts exist over a wide range of length scales, but at O(1)-km scales, ho...

2016
YongZhong Su TingNa Liu XueFen Wang Rong Yang

The effects of salinity on soil organic carbon (SOC) and its labile fractions including microbial biomass carbon (MBC) and easily oxidation organic carbon (EOC), basal soil respiration, and soil nematode community in the Fluvents, an oasis in an arid region of northwestern China were investigated. Five sites were selected which had a salinity gradient with different groundwater table from 1.0 m...

Journal: :Environmental toxicology and chemistry 2003
Geoffroy Coteur Philippe Pernet David Gillan Guillemette Joly Amund Maage Philippe Dubois

The accumulation of Cd, Pb, Zn, and Cu in the starfish Asterias rubens was studied in a Norwegian fjord characterized by a gradient of metal pollution in the sediments, ranging from very high metal concentrations at its head to much lower levels at its opening. The concentrations of metals in starfish from natural populations along the gradient (long-term accumulation) and in starfish that were...

2016
Daniel P. R. Herlemann Daniel Lundin Anders F. Andersson Matthias Labrenz Klaus Jürgens

Understanding the key processes that control bacterial community composition has enabled predictions of bacterial distribution and function within ecosystems. In this study, we used the Baltic Sea as a model system to quantify the phylogenetic signal of salinity and season with respect to bacterioplankton community composition. The abundances of 16S rRNA gene amplicon sequencing reads were anal...

2010
Jed I. Macdonald David A. Crook

Retracing movements of euryhaline fishes using otolith chemistry analysis is a complex task, requiring detailed knowledge of the relationships between otolith and water chemistry for the target species and how these relationships change across dynamic environmental gradients in estuaries. In a controlled laboratory experiment, we quantified relationships between salinity and Sr:Ca and Ba:Ca rat...

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