Summer larval fish assemblages in the Southern Tyrrhenian Sea (Western Mediterranean Sea)

2014 ◽  
Vol 36 (1) ◽  
pp. 104-117 ◽  
Author(s):  
Daniela Giordano ◽  
Adriana Profeta ◽  
Barbara Busalacchi ◽  
Roberta Minutoli ◽  
Letterio Guglielmo ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Fish Assemblages ◽  
Larval Fish ◽  
Western Mediterranean ◽  
Tyrrhenian Sea ◽  
Western Mediterranean Sea ◽  
Southern Tyrrhenian Sea

Two live sightings of Sowerby's beaked whale (Mesoplodon bidens) from the western Mediterranean (Tyrrhenian Sea)

2017 ◽  
Vol 98 (5) ◽  
pp. 1003-1009 ◽  
Author(s):  
Luca Bittau ◽  
Mattia Leone ◽  
Adrien Gannier ◽  
Alexandre Gannier ◽  
Renata Manconi
Keyword(s):  
Mediterranean Sea ◽  
Western Mediterranean ◽  
Tyrrhenian Sea ◽  
Beaked Whale ◽  
Long Distance ◽  
The North ◽  
Western Mediterranean Sea ◽  
Beaked Whales ◽  
Species Groups ◽  
The Mediterranean

Sowerby's beaked whale (Mesoplodon bidens) was previously known in the Mediterranean Sea from a single live stranding of two individuals in the French Riviera. We report here on two live sightings in the western Mediterranean, central-western Tyrrhenian Sea off eastern Corsica (Montecristo Trough) and off eastern Sardinia (Caprera Canyon) in 2010 and 2012, respectively. In both cases single individuals, possibly the same individual, occurred within groups of Cuvier's beaked whales (Ziphius cavirostris) suggesting inter-specific interactions. Based on our close observations of mixed-species groups of Sowerby's and Cuvier's beaked whales, we hypothesize that some previous long-distance sightings of beaked whales in the Mediterranean may not be reliably attributed to Z. cavirostris. The present sightings and previous live stranding indicate that the western Mediterranean Sea is the easternmost marginal area of M. bidens within the North Atlantic geographic range. Notes on behaviour are also provided.

scholarly journals Profiling float observation of thermohaline staircases in the western Mediterranean Sea and impact on nutrient fluxes

2020 ◽  
Vol 17 (13) ◽  
pp. 3343-3366
Author(s):  
Vincent Taillandier ◽  
Louis Prieur ◽  
Fabrizio D'Ortenzio ◽  
Maurizio Ribera d'Alcalà ◽  
Elvira Pulido-Villena
Keyword(s):  
Mediterranean Sea ◽  
Nutrient Enrichment ◽  
Large Scale ◽  
Western Mediterranean ◽  
Salt Flux ◽  
Tyrrhenian Sea ◽  
Profiling Float ◽  
Western Mediterranean Sea ◽  
Deep Waters ◽  
Density Ratios

Abstract. In the western Mediterranean Sea, Levantine intermediate waters (LIW), which circulate below the surface productive zone, progressively accumulate nutrients along their pathway from the Tyrrhenian Sea to the Algerian Basin. This study addresses the role played by diffusion in the nutrient enrichment of the LIW, a process particularly relevant inside step-layer structures extending down to deep waters – structures known as thermohaline staircases. Profiling float observations confirmed that staircases develop over epicentral regions confined in large-scale circulation features and maintained by saltier LIW inflows on the periphery. Thanks to a high profiling frequency over the 4-year period 2013–2017, float observations reveal the temporal continuity of the layering patterns encountered during the cruise PEACETIME and document the evolution of layer properties by about +0.06 ∘C in temperature and +0.02 in salinity. In the Algerian Basin, the analysis of in situ lateral density ratios untangled double-diffusive convection as a driver of thermohaline changes inside epicentral regions and isopycnal diffusion as a driver of heat and salt exchanges with the surrounding sources. In the Tyrrhenian Sea, the nitrate flux across thermohaline staircases, as opposed to the downward salt flux, contributes up to 25 % of the total nitrate pool supplied to the LIW by vertical transfer. Overall, however, the nutrient enrichment of the LIW is driven mostly by other sources, coastal or atmospheric, as well as by inputs advected from the Algerian Basin.

Temporal variability of wild fish assemblages associated with a sea-cage fish farm in the south-western Mediterranean Sea

2007 ◽  
Vol 72 (1-2) ◽  
pp. 299-307 ◽  
Author(s):  
Carlos Valle ◽  
Just T. Bayle-Sempere ◽  
Tim Dempster ◽  
Pablo Sanchez-Jerez ◽  
Francisca Giménez-Casalduero
Keyword(s):  
Mediterranean Sea ◽  
Temporal Variability ◽  
Fish Assemblages ◽  
Western Mediterranean ◽  
Fish Farm ◽  
Wild Fish ◽  
The South ◽  
Western Mediterranean Sea ◽  
Sea Cage ◽  
Cage Fish

Feasibility Study of a Wave Energy Farm in the Western Mediterranean Sea: Comparison Among Different Technologies

2011 ◽  
Author(s):  
Renata Archetti ◽  
Silvia Bozzi ◽  
Giuseppe Passoni
Keyword(s):  
Mediterranean Sea ◽  
Wave Energy ◽  
Western Mediterranean ◽  
Physical Factors ◽  
Tyrrhenian Sea ◽  
Energy Potential ◽  
Ocean Surface Waves ◽  
Wave Energy Converters ◽  
Western Mediterranean Sea ◽  
Proper Scaling

The cost of the energy extracted by ocean surface waves depends on many technological-physical factors like conversion principle, wave energy potential, water depth, shore distance, and ocean floor characteristics. Economic factors, like assumed discount rate, cost reduction due to technological improvement and fiscal incentives, are extremely important too. The Mediterranean Sea and the Tyrrhenian Sea in particular, possess an interesting energy potential. At some locations offshore Sardinia and Sicily the wave energy density is of the order of 10kW/m. In this paper the energy production has been computed for three different wave energy converters (AquaBuOY AWS and Pelamis), at two promising locations in the western Italian seas.. The energy cost has also been computed for the Pelamis device at Alghero site which has the highest wave energy potential. The results indicate that the existing Pelamis converter is oversized with respect to the typical wavelength of the investigated sites After proper scaling of the device, the performance in the energy conversion could become economically attractive also for Italian seas.

Sign in / Sign up

Export Citation Format

Share Document