Integrative assessment of sediment quality in two littoral ecosystems from the Gulf of Cádiz, Spain

1998 ◽  
Vol 17 (6) ◽  
pp. 1073-1084 ◽  
Author(s):  
T. Ángel DelValls ◽  
Jesús M. Forja ◽  
Abelardo Gómez-Parra
Keyword(s):  
Sediment Quality ◽  
Gulf Of Cadiz ◽  
Gulf Of Cádiz ◽  
Integrative Assessment

Sediment quality in littoral regions of the Gulf of Cádiz: a triad approach to address the influence of mining activities

2004 ◽  
Vol 132 (2) ◽  
pp. 341-353 ◽  
Author(s):  
I Riba ◽  
Jesús M Forja ◽  
Abelardo Gómez-Parra ◽  
T.Ángel DelValls
Keyword(s):  
Sediment Quality ◽  
Mining Activities ◽  
Gulf Of Cadiz ◽  
Gulf Of Cádiz

Integrative Assessment of Sediment Quality History in Pulp Mill Recipient Area in Finland

1999 ◽  
Vol 40 (11-12) ◽  
pp. 139-146 ◽  
Author(s):  
Mika A. Kähkönen ◽  
Mikko Liukkonen ◽  
Christoph Wittmann ◽  
Kimmo P. Suominen ◽  
Mirja S. Salkinoja-Salonen
Keyword(s):  
Vibrio Fischeri ◽  
Sediment Quality ◽  
Sediment Accumulation ◽  
Pulp Mill ◽  
Complete Recovery ◽  
Heavy Metal Accumulation ◽  
Atp Content ◽  
Bleached Kraft Pulp ◽  
Elemental Chlorine ◽  
Integrative Assessment

Sediments were dated and the quality assessed by polyphasic approach in an area of Lake Saimaa, which has received waste water from bleached kraft pulp production since 1954. The chosen nonrecipient forest Lake Pyylampi was situated in the same area. The activities of the enzymes butyrate-esterase and aminopeptidase were depressed at the depth of 2 to 8 cm in the recipient but not in the forst lake sediment. In the same layers the contents of EOX-C1 and toxicity to Vibrio fischeri were very high compared to those above or below. Toxicity to microbial community in the 2 to 8 cm layer was also indicated by a gap in the ATP content and a drop in diatom species richness from the 70 species to < 50 reflecting decreased water quality of the pelagic area. All these changes dated to the period of heavy organic halogen discharges, from 1960 to late 1980s, which led to sediment accumulation of solvent soluble halogen at a depth of 2 to 8 cm, to 6.4 g m−2 (cm)−1. In the most polluted sediment layers heavy metal accumulation was too little to be related to the toxicity of these layers. Almost complete recovery of both the sediment microbial ecosystems and of the pelagic diatoms occurred after elemental chlorine was completely substituted by chlorine dioxide and biological treatment adopted for wastewaters. Butyrate-esterase and aminopeptidase, but not phosphatase, activities correlated positively with the ATP content of the sediment. Butyrate-esterase may be used as a tool to estimate microbial biomass.

FORMATION HISTORY AND OCEANOGRAPHIC CONTROL OF LATE HOLOCENE MUD DEPOCENTERS IN THE NORTHEASTERN GULF OF CADIZ, SOUTHERN SPAIN

2016 ◽  
Author(s):  
Mary Lee King ◽  
◽  
Till J.J. Hanebuth ◽  
Francisco Lobo ◽  
Hendrik Lantzsch ◽  
...  
Keyword(s):  
Late Holocene ◽  
Southern Spain ◽  
Gulf Of Cadiz ◽  
Formation History ◽  
Gulf Of Cádiz

Biogeochemistry of surface sediments in mud volcanoes of the Gulf of Cádiz

2021 ◽  
Vol 41 (3) ◽  
Author(s):  
Dolores Jiménez-López ◽  
Ana Sierra ◽  
Teodora Ortega ◽  
Sandra Manzano-Medina ◽  
M. Carmen Fernández-Puga ◽  
...  
Keyword(s):  
Surface Sediments ◽  
Mud Volcanoes ◽  
Gulf Of Cadiz ◽  
Gulf Of Cádiz

scholarly journals Thrust–wrench interference tectonics in the Gulf of Cadiz (Africa–Iberia plate boundary in the North-East Atlantic): Insights from analog models

2011 ◽  
Vol 289 (1-4) ◽  
pp. 135-149 ◽  
Author(s):  
João C. Duarte ◽  
Filipe M. Rosas ◽  
Pedro Terrinha ◽  
Marc-André Gutscher ◽  
Jacques Malavieille ◽  
...  
Keyword(s):  
Plate Boundary ◽  
Gulf Of Cadiz ◽  
East Atlantic ◽  
North East ◽  
The North ◽  
Gulf Of Cádiz ◽  
Analog Models

scholarly journals Latest Miocene restriction of the Mediterranean Outflow Water: a perspective from the Gulf of Cádiz

2021 ◽  
Vol 41 (2) ◽  
Author(s):  
Zhi Lin Ng ◽  
F. Javier Hernández-Molina ◽  
Débora Duarte ◽  
Francisco J. Sierro ◽  
Santiago Ledesma ◽  
...  
Keyword(s):  
Mass Exchange ◽  
Water Mass ◽  
Atlantic Water ◽  
Meridional Overturning Circulation ◽  
Gulf Of Cadiz ◽  
Mediterranean Outflow Water ◽  
Gulf Of Cádiz ◽  
Mediterranean Outflow ◽  
The Mediterranean ◽  
Water Mass Exchange

AbstractThe Mediterranean-Atlantic water mass exchange provides the ideal setting for deciphering the role of gateway evolution in ocean circulation. However, the dynamics of Mediterranean Outflow Water (MOW) during the closure of the Late Miocene Mediterranean-Atlantic gateways are poorly understood. Here, we define the sedimentary evolution of Neogene basins from the Gulf of Cádiz to the West Iberian margin to investigate MOW circulation during the latest Miocene. Seismic interpretation highlights a middle to upper Messinian seismic unit of transparent facies, whose base predates the onset of the Messinian salinity crisis (MSC). Its facies and distribution imply a predominantly hemipelagic environment along the Atlantic margins, suggesting an absence or intermittence of MOW preceding evaporite precipitation in the Mediterranean, simultaneous to progressive gateway restriction. The removal of MOW from the Mediterranean-Atlantic water mass exchange reorganized the Atlantic water masses and is correlated to a severe weakening of the Atlantic Meridional Overturning Circulation (AMOC) and a period of further cooling in the North Atlantic during the latest Miocene.

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