Dynamics and sources of organic carbon in suspended particulate matter and sediments in Pialassa Baiona lagoon (NW Adriatic Sea, Italy)

被引:24
|
作者
Guerra, R. [1 ,2 ]
Pistocchi, R. [1 ]
Vanucci, S. [3 ]
机构
[1] Univ Bologna, CIRSA, I-48123 Ravenna, Italy
[2] Univ Bologna, Dept Phys, I-40126 Bologna, Italy
[3] Univ Messina, Dipartimento Sci Biol & Ambientali, I-98166 Messina, Italy
关键词
suspended particulate matter; sediment; delta C-13; bacteria; eutrophication; coastal lagoon; NITROGEN STABLE-ISOTOPE; COASTAL LAGOON; SURFICIAL SEDIMENTS; FOOD-WEB; PRIMARY PRODUCERS; C/N RATIOS; RIVER; BAY; MARINE; INDICATORS;
D O I
10.1016/j.ecss.2013.06.022
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
Organic carbon (OC), total nitrogen (TN) and stable carbon isotopic signature (delta C-13) of suspended particulate matter and of surface sediments were investigated to assess temporal dynamics and relative contribution of autochthonous and allochthonous CC sources in the coastal eutrophic Pialassa Baiona lagoon. Water sampling for particulate organic carbon (POC), total nitrogen (PTN), nutrients and chlorophyll a (Chl a) concentrations, and bacterial abundance was carried out over a year. Seasonal changes of delta C-13(POC) signature and C/N ratio discriminated two main areas within the lagoon: the partially preserved northern-central area and the southernmost impacted area. Except for the southernmost impacted area, delta C-13(POC) (mean value: 22.11 parts per thousand) showed the highest depleted values in winter and the most enriched in summer following phytoplankton seasonal development as also suggested by changes in C/N ratios, and by the significant correlations found between Chl a and POC, and delta C-13(POC). Moreover, the two areas showed different timing and isotopic signature of phytoplankton blooms (e.g. Chl a 23.22 and 29.27 mu g L-1, and delta C-13(POC) -19.15 and -30.70 parts per thousand, June and March, in the northern-central and southern area, respectively). The summer bloom in the northern-central area was also associated with high bacterial abundances (up to 730 x 109 cells L-1), suggesting the establishment of a strong structured microbial food loop and organic matter recycling. Surface sediments from the southern impacted area showed significant higher values in OC and TN contents (3.05 and 1.44%), and significant depleted delta C-13 signal (-23.03 parts per thousand) when compared to the control area (1.09 and 0.16%, -19.40 parts per thousand); whereas no differences were found in C/N ratios (8.1 and 8.2, in northern-central and southern impacted area, respectively). Elemental and isotopic composition data showed a strong coupling between POC and surface sediments. The relative contribution of three different sources (marine, estuarine, terrestrial) to POC and surface sediments were estimated using a mixing model, which predicted a predominant fraction of marine phytoplankton in POC during spring-summer and in surface sediments from the northern-central area. Conversely, dominant allochthonous sources were predicted for POC in winter months and in impacted area sediments. delta C-13 values of surface sediment reflected an isotopic overprint of refractory terrestrial-derived (allochthonous) organic carbon agreeing with urban/industrial wastewaters origin. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:24 / 32
页数:9
相关论文
共 32 条
  • [1] Spatial patterns of metals, PCDDs/Fs, PCBs, PBDEs and chemical status of sediments from a coastal lagoon (Pialassa Baiona, NW Adriatic, Italy)
    Guerra, Roberta
    Pasteris, Andrea
    Lee, Seok-hyung
    Park, No-jin
    Ok, Gon
    [J]. MARINE POLLUTION BULLETIN, 2014, 89 (1-2) : 407 - 416
  • [2] Organic matter origin and distribution in suspended particulate materials and surficial sediments from the western Adriatic Sea (Italy)
    Tesi, T.
    Miserocchi, S.
    Goni, M. A.
    Langone, L.
    Boldrin, A.
    Turchetto, M.
    [J]. ESTUARINE COASTAL AND SHELF SCIENCE, 2007, 73 (3-4) : 431 - 446
  • [3] Modelling short-term dynamics of suspended particulate matter in Venice Lagoon, Italy
    Rolinski, S
    Umgiesser, G
    [J]. ESTUARINE COASTAL AND SHELF SCIENCE, 2005, 63 (04) : 561 - 576
  • [4] Sources of carbon to suspended particulate organic matter in the northern Gulf of Mexico
    Rogers, Kelsey L.
    Bosman, Samantha H.
    Weber, Sarah
    Magen, Cedric
    Montoya, Joseph P.
    Chanton, Jeffrey P.
    [J]. ELEMENTA-SCIENCE OF THE ANTHROPOCENE, 2019, 7
  • [5] Biochemical composition and early diagenesis of organic matter in coastal sediments of the NW Adriatic Sea influenced by riverine inputs
    Dell'Anno, A.
    Pusceddu, A.
    Langone, L.
    Danovaro, R.
    [J]. CHEMISTRY AND ECOLOGY, 2008, 24 (01) : 75 - 85
  • [6] Distribution and sources of stable organic carbon and nitrogen isotopes in suspended particulate organic matter of Poyang Lake
    Wang, Mao-Lan
    Zhang, Ding-Ling
    Lai, Jian-Ping
    Hu, Ke-Tu
    Lai, Jin-Hu
    [J]. Zhongguo Huanjing Kexue/China Environmental Science, 2014, 34 (09): : 2342 - 2350
  • [7] Bacteriohopanepolyol distribution in Yenisei River and Kara Sea suspended particulate matter and sediments traces terrigenous organic matter input
    De Jonge, Cindy
    Talbot, Helen M.
    Bischoff, Juliane
    Stadnitskaia, Alina
    Cherkashov, Georgy
    Damste, Jaap S. Sinninghe
    [J]. GEOCHIMICA ET COSMOCHIMICA ACTA, 2016, 174 : 85 - 101
  • [8] Temporal dynamics of dissolved and particulate organic carbon in the northern Adriatic Sea in relation to the mucilage events
    Giani, M
    Savelli, F
    Berto, D
    Zangrando, V
    Cosovic, B
    Vojvodic, V
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2005, 353 (1-3) : 126 - 138
  • [9] Carbon and nitrogen isotope compositions of organic matter in coastal marine sediments (the Gulf of Trieste, N Adriatic Sea): indicators of sources and preservation
    Ogrinc, N
    Fontolan, G
    Faganeli, J
    Covelli, S
    [J]. MARINE CHEMISTRY, 2005, 95 (3-4) : 163 - 181
  • [10] Carbon and nitrogen isotope composition of particulate organic matter in relation to mucilage formation in the northern Adriatic Sea
    Faganeli, J.
    Ogrinc, N.
    Kovac, N.
    Kukovec, K.
    Falnoga, I.
    Mozetic, P.
    Bajt, O.
    [J]. MARINE CHEMISTRY, 2009, 114 (3-4) : 102 - 109