Seasonal variations in the source of sea bottom organic matter off Catalonia coasts (western Mediterranean): links with hydrography and biological response

Verfasser / Beitragende:
[P. Rumolo, Joan Cartes, E. Fanelli, V. Papiol, M. Sprovieri, S. Mirto, S. Gherardi, A. Bonanno]
Ort, Verlag, Jahr:
2015
Enthalten in:
Journal of Oceanography, 71/4(2015-08-01), 325-343
Format:
Artikel (online)
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024 7 0 |a 10.1007/s10872-015-0291-7  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10872-015-0291-7 
245 0 0 |a Seasonal variations in the source of sea bottom organic matter off Catalonia coasts (western Mediterranean): links with hydrography and biological response  |h [Elektronische Daten]  |c [P. Rumolo, Joan Cartes, E. Fanelli, V. Papiol, M. Sprovieri, S. Mirto, S. Gherardi, A. Bonanno] 
520 3 |a Analyses of the total organic carbon (TOC), total nitrogen (TN), C/N ratio and isotopic (δ 13C and δ 15N) composition of organic matter (OM) in surficial sediments, integrated with hydrographic measurements, have been used to evaluate the sources and distribution of sedimentary organic matter on the Catalonian shelf and slope (northwest Mediterranean Sea). We examined the effects of the variations on meiofauna. Settled OM in February, April and October displayed δ 13C relatively closer to marine algae (mean −22.4‰±0.1) than that in July (−23.3, −23.7 and −22.7‰ at 60, 600 and 800m, respectively). Lowest δ 13C (−23.7‰) and high C/N (~10), indicative of mixed continental and marine organic contributions, were detected principally at the head of the Buscarró Canyon (at 600m) in July, ca. 2-3months after the maximum river discharge. We observed significant changes in total meiofaunal density among seasons in the canyon, with the highest values in July and October. On the adjacent slope at 800m there was no significant increase of total meiofauna in those months. Although export of marine organic matter from surface layers was the main food source in the study area (on average 71.2% estimating marine and terrestrial OC by binary models; 68-71% at the most by SIAR models), advection of organic matter from the continental edge and/or resuspension of organic matter along submarine canyons may seasonally alter the composition of deposits on the slope, particularly in July with % OC of terrestrial origin reaching 48.7% in Buscarró canyon, shifting the basal food-web of deep ecosystems. 
540 |a The Oceanographic Society of Japan and Springer Japan, 2015 
690 7 |a Continental slope  |2 nationallicence 
690 7 |a Organic matter  |2 nationallicence 
690 7 |a Seasonality  |2 nationallicence 
690 7 |a Stable isotopes  |2 nationallicence 
690 7 |a Meiofauna  |2 nationallicence 
690 7 |a North western Mediterranean  |2 nationallicence 
700 1 |a Rumolo  |D P.  |u IAMC-CNR, Calata Porta di Massa (Interno Porto di Napoli), 80133, Naples, Italy  |4 aut 
700 1 |a Cartes  |D Joan  |u ICM-CSIC Institut de Ciénciès del Mar, Passeig Maritim de la Barceloneta 37-49, 08003, Barcelona, Spain  |4 aut 
700 1 |a Fanelli  |D E.  |u Marine Environment Research Centre ENEA-Santa Teresa, Pozzuolo di Lerici, 19100, La Spezia, SP, Italy  |4 aut 
700 1 |a Papiol  |D V.  |u ICM-CSIC Institut de Ciénciès del Mar, Passeig Maritim de la Barceloneta 37-49, 08003, Barcelona, Spain  |4 aut 
700 1 |a Sprovieri  |D M.  |u IAMC-CNR, Via del Mare, 3 Torretta Granitola, 91021, Fraz. Campobello di Mazara, TP, Italy  |4 aut 
700 1 |a Mirto  |D S.  |u IAMC-CNR, via G. da Verrazzano, 17, 91014, Castellammare del Golfo, TP, Italy  |4 aut 
700 1 |a Gherardi  |D S.  |u IAMC-CNR, Calata Porta di Massa (Interno Porto di Napoli), 80133, Naples, Italy  |4 aut 
700 1 |a Bonanno  |D A.  |u IAMC-CNR, Via del Mare, 3 Torretta Granitola, 91021, Fraz. Campobello di Mazara, TP, Italy  |4 aut 
773 0 |t Journal of Oceanography  |d Springer Japan  |g 71/4(2015-08-01), 325-343  |x 0916-8370  |q 71:4<325  |1 2015  |2 71  |o 10872 
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900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Rumolo  |D P.  |u IAMC-CNR, Calata Porta di Massa (Interno Porto di Napoli), 80133, Naples, Italy  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Cartes  |D Joan  |u ICM-CSIC Institut de Ciénciès del Mar, Passeig Maritim de la Barceloneta 37-49, 08003, Barcelona, Spain  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Fanelli  |D E.  |u Marine Environment Research Centre ENEA-Santa Teresa, Pozzuolo di Lerici, 19100, La Spezia, SP, Italy  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Papiol  |D V.  |u ICM-CSIC Institut de Ciénciès del Mar, Passeig Maritim de la Barceloneta 37-49, 08003, Barcelona, Spain  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Sprovieri  |D M.  |u IAMC-CNR, Via del Mare, 3 Torretta Granitola, 91021, Fraz. Campobello di Mazara, TP, Italy  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Mirto  |D S.  |u IAMC-CNR, via G. da Verrazzano, 17, 91014, Castellammare del Golfo, TP, Italy  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Gherardi  |D S.  |u IAMC-CNR, Calata Porta di Massa (Interno Porto di Napoli), 80133, Naples, Italy  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Bonanno  |D A.  |u IAMC-CNR, Via del Mare, 3 Torretta Granitola, 91021, Fraz. Campobello di Mazara, TP, Italy  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Journal of Oceanography  |d Springer Japan  |g 71/4(2015-08-01), 325-343  |x 0916-8370  |q 71:4<325  |1 2015  |2 71  |o 10872