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Limitation of lignin derivatives as biomarkers of land derived organic matter in the coastal marine sediments

100%

Pempkowiak J.

Oceanologia

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2020

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tom 62

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nr 3

2

Spatial and temporal distribution of heavy metals in coastal core sediments from the Red Sea, Saudi Arabia

84%

Al-Mur B. A., Quicksall A. N., Al-Ansari A. M. A.

Oceanologia

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2017

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tom 59

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nr 3

Jeddah is the most industrialized city on the west coast of Saudi Arabia and is under increasing influence of human activities. Heavy metals data were obtained from four near-coast Red Sea sediment cores in close proximity to Jeddah. Chromium, manganese, iron, copper, zinc, and lead were analyzed from depth-resolved sections of each core via heavy acid digestion and inductively coupled plasma-mass spectrometry (ICP-MS). The average concentrations of all four sites were 245.96 mg kg1, 478.45 mg kg1, 8506.13 mg kg1, 251.82 mg kg1, 623.09 mg kg1, and 362.75 mg kg1, respectively. The depth-resolved results showed that highest concentrations of Mn, Cu, and Pb were found in the top 15 cm of the core profile distributions compared to other depth sub-samples. Heavy metal concentrations in core sediments are increased near central Jeddah and have become higher in recent years. The results of enrichment factor calculations indicate little anthropogenic supply of Mn and Cr while Pb, Zn, and Cu show strong anthropogenic input. The Pollution Load Index was higher in the two sites closer to central Jeddah where power and desalination plants and wastewater release are known. This indicates that the area has suffered from heavy metal pollution compared to other non-industrialized sites in the Red Sea. Heavy metal contaminations due to anthropogenic activity should be taken into account to protect the Red Sea during future growth. The results of this work should be considered as a baseline for heavy metals monitoring in the sediments of the Red Sea coast near Jeddah, Saudi Arabia.

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Vertical organic inputs and bio-availability of carbon in an Antarctic coastal sediment

84%

Walker T. R.

Polish Polar Research

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2005

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tom 26

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nr 2

91-106

Measurements were made of organic fluxes at a coastal sediment at Signy Island, South Orkney Islands, Antarctica, between December 1990 and March 1992. The deposition rate of organic matter to the sediment was measured at the same time with a maximum sedimentation rate of 306 mg C m-2 d-1. The rates of sedimentary organic input were small during winter ice cover, and the organic content of the sediment declined during this period as available organic matter was depleted. Fresh organic input occurred as soon as the sea-ice melted and ice algal biomass was deposited to the sediment; and was sustained during the spring after ice break-up by continued primary production in the water column. The proportion of available carbon in surface sediments was measured during a seasonal cycle using Pseudomonas aeruginosa as an indicator organism over the 0-1 cm depth horizon. Variations in the amount of organic matter deposited to the sediments and the proportion of available carbon were observed during the seasonal cycle. Seasonal variations of benthic activity in this coastal sediment was regulated by the input and availability of organic matter, and not by seasonal water temperature, which was relatively constant between -1.8 and 0.5 C.

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Dinoflagellate cyst distribution in recent sediments along the South-East coast of India

84%

Narale D. D., Patil J. S., Anil A. C.

Oceanologia

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2013

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tom 55

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nr 4

5

Distribution of polynuclear aromatic hydrocarbons [PAHs] in sediments of the southern Baltic Sea

67%

Kowalewska G., Konat J.

Oceanologia

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1997

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tom 39

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nr 1

Ograniczanie wyników

4 Oceanologia

1 Polish Polar Research

1 Al-Ansari A. M. A.

1 Al-Mur B. A.

1 Anil A. C.

1 Konat J.

1 Kowalewska G.

1 Narale D. D.

1 Patil J. S.

1 Pempkowiak J.

1 Quicksall A. N.

1 Walker T. R.

1 2020

1 2017

1 2013

1 2005

1 1997

Limitation of lignin derivatives as biomarkers of land derived organic matter in the coastal marine sediments

Spatial and temporal distribution of heavy metals in coastal core sediments from the Red Sea, Saudi Arabia

Vertical organic inputs and bio-availability of carbon in an Antarctic coastal sediment

Dinoflagellate cyst distribution in recent sediments along the South-East coast of India

Distribution of polynuclear aromatic hydrocarbons [PAHs] in sediments of the southern Baltic Sea