Abstract：
:Humic compounds were determined in sediments collected in an area of the Adriatic sea receiving fresh waters from the river Po. Sediment cores (10 cm) were sectioned into four layers which were analysed separately for redox potential (Eh), total phosphorus (TP), total organic carbon (TOC), humic (HA) and fulvic acid (FA) content. The structure of HA and FA was also investigated. The results showed that the TOC and TP content decreased from the coast to the open-sea stations. Humic and fulvic acid concentrations were also inversely correlated to the distance from the coast. Moreover, the humic and fulvic acids were closely correlated to the total organic content and to the total phosphorus content. The correlations found between humic substances (HS) and TOC and TP, respectively, could be explained both by an in situ formation due to the high content of nutrients and organic matter, and by a common source of HS, TOC and TP, namely the River Po discharge. The predominant presence of aliphatic carbon in the humic structures, the low degree of substitution and the high nitrogen content suggest that primarily humified compounds were formed in situ. Nevertheless, the River Po can act both as supplier of organic matter of which decomposition products lead to the formation of humic compound and as carrier of humified compounds.
journal_name
Mar Environ Resjournal_title
Marine environmental researchauthors
Calace N,Cardellicchio N,Petronio BM,Pietrantonio M,Pietroletti Mdoi
10.1016/j.marenvres.2005.05.002keywords:
subject
Has Abstractpub_date
2006-02-01 00:00:00pages
40-58issue
1eissn
0141-1136issn
1879-0291pii
S0141-1136(05)00043-7journal_volume
61pub_type
杂志文章abstract：:In this study, new DNA markers were explored for the flounder Platichthys flesus. cDNA and genomic sequences of the genes encoding the glyceraldehyde-3-phosphate-deshydrogenase (GAPDH), the cytosolic creatine kinase (CK), the prostaglandin D synthase (PGDS) and the betaine homocysteine methyltransferase (BHMT) were ch...
journal_title：Marine environmental research
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pub_type： 杂志文章,评审
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journal_title：Marine environmental research
pub_type： 杂志文章
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journal_title：Marine environmental research
pub_type： 杂志文章
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更新日期：2020-10-01 00:00:00
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更新日期：2019-02-01 00:00:00
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journal_title：Marine environmental research
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