scholarly journals Benthic deep-sea fungi in submarine canyons of the Mediterranean Sea

2018 ◽  
Vol 168 ◽  
pp. 57-64 ◽  
Author(s):  
Giulio Barone ◽  
Eugenio Rastelli ◽  
Cinzia Corinaldesi ◽  
Michael Tangherlini ◽  
Roberto Danovaro ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Deep Sea ◽  
Submarine Canyons ◽  
The Mediterranean

Speciation of mercury in surface and deep-sea waters in the Mediterranean Sea

2003 ◽  
Vol 37 ◽  
pp. 93-108 ◽  
Author(s):  
Milena Horvat ◽  
Jože Kotnik ◽  
Martina Logar ◽  
Vesna Fajon ◽  
Tomislav Zvonarić ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Deep Sea ◽  
The Mediterranean

scholarly journals Influence of the summer deep-sea circulations on passive drifts among the submarine canyons in the northwestern Mediterranean Sea

Ocean Science ◽  
2019 ◽  
Vol 15 (6) ◽  
pp. 1745-1759 ◽  
Author(s):  
Morane Clavel-Henry ◽  
Jordi Solé ◽  
Miguel-Ángel Ahumada-Sempoal ◽  
Nixon Bahamon ◽  
Florence Briton ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Continental Slope ◽  
Deep Sea ◽  
Particle Transport ◽  
Bottom Topography ◽  
Regional Ocean Modeling System ◽  
Submarine Canyons ◽  
Northwestern Mediterranean Sea ◽  
The Impact ◽  
Northwestern Mediterranean

Abstract. Marine biophysical models can be used to explore the displacement of individuals in and between submarine canyons. Mostly, the studies focus on the shallow hydrodynamics in or around a single canyon. In the northwestern Mediterranean Sea, knowledge of the deep-sea circulation and its spatial variability in three contiguous submarine canyons is limited. We used a Lagrangian framework with three-dimensional velocity fields from two versions of the Regional Ocean Modeling System (ROMS) to study the deep-bottom connectivity between submarine canyons and to compare their influence on the particle transport. From a biological point of view, the particles represented eggs and larvae spawned by the deep-sea commercial shrimp Aristeus antennatus along the continental slope in summer. The passive particles mainly followed a southwest drift along the continental slope and drifted less than 200 km considering a pelagic larval duration (PLD) of 31 d. Two of the submarine canyons were connected by more than 27 % of particles if they were released at sea bottom depths above 600 m. The vertical advection of particles depended on the depth where particles were released and the circulation influenced by the morphology of each submarine canyon. Therefore, the impact of contiguous submarine canyons on particle transport should be studied on a case-by-case basis and not be generalized. Because the flows were strongly influenced by the bottom topography, the hydrodynamic model with finer bathymetric resolution data, a less smoothed bottom topography, and finer sigma-layer resolution near the bottom should give more accurate simulations of near-bottom passive drift. Those results propose that the physical model parameterization and discretization have to be considered for improving connectivity studies of deep-sea species.

scholarly journals Echinoderes pterus sp. n. showing a geographically and bathymetrically wide distribution pattern on seamounts and on the deep-sea floor in the Arctic Ocean, Atlantic Ocean, and the Mediterranean Sea (Kinorhyncha, Cyclorhagida)

ZooKeys ◽  
2018 ◽  
Vol 771 ◽  
pp. 15-40 ◽  
Author(s):  
Hiroshi Yamasaki ◽  
Katarzyna Grzelak ◽  
Martin V. Sørensen ◽  
Birger Neuhaus ◽  
Kai Horst George
Keyword(s):  
Atlantic Ocean ◽  
Arctic Ocean ◽  
Distribution Pattern ◽  
Mediterranean Sea ◽  
Deep Sea ◽  
Wide Distribution ◽  
The Arctic ◽  
Sea Floor ◽  
The Arctic Ocean ◽  
The Mediterranean

Kinorhynchs rarely show a wide distribution pattern, due to their putatively low dispersal capabilities and/or limited sampling efforts. In this study, a new kinorhynch species is described,Echinoderespterussp. n., which shows a geographically and bathymetrically wide distribution, occurring on the Karasik Seamount and off the Svalbard Islands (Arctic Ocean), on the Sedlo Seamount (northeast Atlantic Ocean), and on the deep-sea floor off Crete and on the Anaximenes Seamount (Mediterranean Sea), at a depth range of 675–4,403 m. The new species is characterized by a combination of middorsal acicular spines on segments 4–8, laterodorsal tubes on segment 10, lateroventral tubes on segment 5, lateroventral acicular spines on segments 6–9, tufts of long hairs rising from slits in a laterodorsal position on segment 9, truncated tergal extensions on segment 11, and the absence of any type-2 gland cell outlet. The specimens belonging to the populations from the Arctic Ocean, the Sedlo Seamount, and the Mediterranean Sea show morphological variation in the thickness and length of the spines as well as in the presence/absence of ventromedial sensory spots on segment 7. The different populations are regarded as belonging to a single species because of their overlapping variable characters.

Dioxin compounds in the deep-sea rose shrimp Aristeus antennatus (Risso, 1816) throughout the Mediterranean Sea

2006 ◽  
Vol 53 (12) ◽  
pp. 1895-1906 ◽  
Author(s):  
Guiomar Rotllant ◽  
Esteban Abad ◽  
Francisco Sardà ◽  
Manuela Ábalos ◽  
Joan B. Company ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Deep Sea ◽  
The Mediterranean ◽  
Aristeus Antennatus

scholarly journals Viral decay and viral production rates in continental-shelf and deep-sea sediments of the Mediterranean Sea

2010 ◽  
Vol 72 (2) ◽  
pp. 208-218 ◽  
Author(s):  
Cinzia Corinaldesi ◽  
Antonio Dell'Anno ◽  
Mirko Magagnini ◽  
Roberto Danovaro
Keyword(s):  
Continental Shelf ◽  
Mediterranean Sea ◽  
Deep Sea ◽  
Viral Production ◽  
Production Rates ◽  
Deep Sea Sediments ◽  
The Mediterranean

scholarly journals Bioavailability of sinking organic matter in the Blanes canyon and the adjacent open slope (NW Mediterranean Sea)

2013 ◽  
Vol 10 (5) ◽  
pp. 3405-3420 ◽  
Author(s):  
P. Lopez-Fernandez ◽  
S. Bianchelli ◽  
A. Pusceddu ◽  
A. Calafat ◽  
A. Sanchez-Vidal ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Deep Sea ◽  
Phytoplankton Bloom ◽  
Statistical Tests ◽  
Sea Surface ◽  
Submarine Canyons ◽  
Entire Study ◽  
Sea Floor ◽  
Nw Mediterranean ◽  
Nw Mediterranean Sea

Abstract. Submarine canyons are sites of intense energy and material exchange between the shelf and the deep adjacent basins. To test the hypothesis that active submarine canyons represent preferential conduits of available food for the deep-sea benthos, two mooring lines were deployed at 1200 m depth from November 2008 to November 2009 inside the Blanes canyon and on the adjacent open slope (Catalan Margin, NW Mediterranean Sea). We investigated the fluxes, biochemical composition and food quality of sinking organic carbon (OC). OC fluxes in the canyon and the open slope varied among sampling periods, though not consistently in the two sites. In particular, while in the open slope the highest OC fluxes were observed in August 2009, in the canyon the highest OC fluxes occurred in April–May 2009. For almost the entire study period, the OC fluxes in the canyon were significantly higher than those in the open slope, whereas OC contents of sinking particles collected in the open slope were consistently higher than those in the canyon. This result confirms that submarine canyons are effective conveyors of OC to the deep sea. Particles transferred to the deep sea floor through the canyons are predominantly of inorganic origin, significantly higher than that reaching the open slope at a similar water depth. Using multivariate statistical tests, two major clusters of sampling periods were identified: one in the canyon that grouped trap samples collected in December 2008, concurrently with the occurrence of a major storm at the sea surface, and associated with increased fluxes of nutritionally available particles from the upper shelf. Another cluster grouped samples from both the canyon and the open slope collected in March 2009, concurrently with the occurrence of the seasonal phytoplankton bloom at the sea surface, and associated with increased fluxes of total phytopigments. Our results confirm the key ecological role of submarine canyons for the functioning of deep-sea ecosystems, and highlight the importance of canyons in linking episodic storms and primary production occurring at the sea surface to the deep sea floor.

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