Enzymatic Activities and Prokaryotic Abundance in Relation to Organic Matter along a West–East Mediterranean Transect (TRANSMED Cruise)

Autor: C. Santinelli, Alfredo Boldrin, M. Turchetto, Renata Zaccone, G. Maimone, R. La Ferla, Gabriella Caruso
Rok vydání: 2012
Předmět:
Zdroj: Microbial ecology 64 (2012): 54–66. doi:10.1007/s00248-012-0011-4
info:cnr-pdr/source/autori:Zaccone R., Boldrin A., Caruso G., La Ferla R., Maimone G., Santinelli C., Turchetto M./titolo:Enzymatic Activities and Prokaryotic Abundance in Relation to Organic Matter along a West-East Mediterranean Transect (TRANSMED Cruise)/doi:10.1007%2Fs00248-012-0011-4/rivista:Microbial ecology/anno:2012/pagina_da:54/pagina_a:66/intervallo_pagine:54–66/volume:64
ISSN: 1432-184X
0095-3628
DOI: 10.1007/s00248-012-0011-4
Popis: The distribution of extracellular enzymatic activities (EEA) [leucine aminopeptidase (LAP), s-glucosidase (GLU), alkaline phosphatase (AP)], as well as that of prokaryotic abundance (PA) and biomass (PB), dissolved organic carbon (DOC), particulate organic carbon and particulate total nitrogen (POC, PTN), was determined in the epi-, meso-, and bathypelagic waters of the Mediterranean Sea along a West–East transect and at one Atlantic station located outside the Strait of Gibraltar. This study represents a synoptical evaluation of the microbial metabolism during early summer. Decreasing trends with depth were observed for most of the parameters (PA, PB, AP, DOC, POC, PTN). Significant differences between the western and eastern basins of the Mediterranean Sea were found, displaying higher rates of LAP and GLU and lower C/N ratios more in the eastern than in the western areas. Conversely, in the epipelagic layer, PA and PB were found to be higher in the western than in the eastern basins. PB was significantly related to DOC concentration (all data, n = 145, r = 0.53, P
Databáze: OpenAIRE
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