Spine and test skeletal matrices of the Mediterranean sea urchinArbacia lixula- a comparative characterization of their sugar signature

FEBS Journal ◽  
2015 ◽  
Vol 282 (10) ◽  
pp. 1891-1905 ◽  
Author(s):  
Julia M. Kanold ◽  
Nathalie Guichard ◽  
Françoise Immel ◽  
Laurent Plasseraud ◽  
Marion Corneillat ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Comparative Characterization ◽  
The Mediterranean

Bioacoustic Characterization of the Mediterranean Sea

2001 ◽  
Author(s):  
Gianni Pavan
Keyword(s):  
Mediterranean Sea ◽  
The Mediterranean

scholarly journals Characterization of turbulence and validation of fine-scale parametrization in the Mediterranean Sea during BOUM experiment

2011 ◽  
Vol 8 (5) ◽  
pp. 8961-8998 ◽  
Author(s):  
Y. Cuypers ◽  
P. Bouruet-Aubertot ◽  
C. Marec ◽  
J.-L. Fuda
Keyword(s):  
Energy Dissipation ◽  
Mediterranean Sea ◽  
Fine Scale ◽  
Data Set ◽  
Mean Values ◽  
The Mediterranean ◽  
Microstructure Measurements ◽  
High Level ◽  
Anticyclonic Eddies

Abstract. One main purpose of BOUM experiment was to give evidence of the possible impact of submesoscale dynamics on biogeochemical cycles. To this aim physical as well as biogeochemical data were collected along a zonal transect through the western and eastern basins. Along this transect 3 day fixed point stations were performed within anticyclonic eddies during which microstructure measurements were collected over the first 100 m. We focus here on the characterization of turbulent mixing induced by internal wave breaking. The analysis of microstructure measurements revealed a high level of turbulence in the seasonal pycnocline and a moderate level below with energy dissipation mean values of the order of 10−6 W kg−1 and 10−8 W kg−1, respectively. Fine-scale parameterizations developed to mimic energy dissipation produced by internal wavebreaking were then tested against these direct measurements. Once validated a parameterization has been applied to infer energy dissipation and mixing over the whole data set, thus providing an overview over a latitudinal section of the Mediterranean sea. The results evidence a significant increase of dissipation at the top and base of eddies associated with strong near inertial waves. Vertical turbulent diffusivity is increased both in these regions and in the weakly stratified eddy core.

Molecular characterization of two opecoelid trematodes from fishes in the Gulf of Mexico, with a description of a new species of Helicometra

2014 ◽  
Vol 59 (3) ◽  
Author(s):  
Michael Andres ◽  
Candis Ray ◽  
Eric Pulis ◽  
Stephen Curran ◽  
Robin Overstreet
Keyword(s):  
Gulf Of Mexico ◽  
Mediterranean Sea ◽  
Sensu Stricto ◽  
Internal Transcribed Spacer Region ◽  
Rdna Sequences ◽  
New Material ◽  
Geographic Regions ◽  
The Mediterranean ◽  
A New Species

AbstractThe plagioporine opecoelids Helicometra fasciata (Rudolphi, 1819) Odhner, 1902, and Macvicaria crassigula (Linton, 1910) Bartoli, Bray, and Gibson, 1989 have been reported from fishes in expansive geographic regions, disjointed from their type localities. New material of M. crassigula was collected from near its type locality as well as specimens resembling Helicometra fasciata sensu lato from three triglids in the Gulf of Mexico. Comparisons of the ribosomal DNA (rDNA) sequences, comprising the partial 18S rDNA, internal transcribed spacer region (= ITS1, 5.8S, and ITS2), and partial 28S rDNA gene, from M. crassigula and Helicometra fasciata sensu lato in the Gulf of Mexico were made with sequences deposited in GenBank from those species from the Mediterranean Sea. Results reveal that M. crassigula sensu stricto from the Gulf of Mexico is distinct from the two cryptic species of M. crassigula sensu lato from the Mediterranean Sea and Helicometra fasciata sensu lato in this study differs from H. fasciata sequences from the Mediterranean Sea, thus Helicometra manteri sp. nov. is described.

scholarly journals Redescription and molecular characterization of two species of Pauciconfibula (Monogenea, Microcotylidae) from trachinid fishes in the Mediterranean Sea

2021 ◽  
Author(s):  
Ramla Azizi ◽  
Chahinez Bouguerche ◽  
Mario Santoro ◽  
Delphine Gey ◽  
Fadila Tazerouti ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Molecular Characterization ◽  
The Mediterranean

scholarly journals Bio-optical characterization of subsurface chlorophyll maxima in the Mediterranean Sea from a Biogeochemical-Argo float database

2018 ◽  
Author(s):  
Marie Barbieux ◽  
Julia Uitz ◽  
Bernard Gentili ◽  
Orens Pasqueron de Fommervault ◽  
Alexandre Mignot ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Chlorophyll Concentration ◽  
Environmental Parameters ◽  
Western Basin ◽  
Different Types ◽  
The Mediterranean ◽  
Spatio Temporal ◽  
The Vertical Distribution

Abstract. As commonly observed in oligotrophic stratified waters, a Subsurface (or Deep) Chlorophyll Maximum (SCM) frequently characterizes the vertical distribution of phytoplankton chlorophyll in the Mediterranean Sea. Occurring far from the surface layer seen by ocean color satellites, SCMs are difficult to observe with adequate spatio-temporal resolution and their biogeochemical impact remains unknown. BioGeochemical-Argo (BGC-Argo) profiling floats represent appropriate tools for studying the dynamics of SCMs. Based on data collected from 36 BGC-Argo floats deployed in the Mediterranean Sea, our study aims to address two main questions: (1) What are the different types of SCMs in Mediterranean Sea? (2) Which environmental factors control their occurrence and dynamics? First, we analyzed the seasonal and regional variations of the chlorophyll concentration (Chla), particulate backscattering coefficient (bbp), a proxy of the Particulate Organic Carbon (POC), and environmental parameters (PAR and nitrates) within the SCM layer over the Mediterranean basin. The vertical profiles of Chla and bbp were then statistically classified, and the seasonal occurrence of each of the different types of SCMs quantified. Finally, a case study was performed on two contrasted regions and the environmental conditions at depth were further investigated to understand which parameter controls the SCMs. In the Eastern Basin, SCMs result, at a first order, from photoacclimation process. Conversely, SCMs in the Western Basin reflect a biomass increase at depth benefiting from both light and nitrate resources. Our results also suggest that a variety of intermediate types of SCMs are encountered between these two end-member situations.

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