scholarly journals Continental slope and deep-sea fisheries: implications for a fragile ecosystem

2000 ◽  
Vol 57 (3) ◽  
pp. 548-557 ◽  
Author(s):  
J Koslow
Keyword(s):  
Continental Slope ◽  
Deep Sea

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.

Initial Deep-Sea Sediment Deformation at the Base of the Washington Continental Slope: A Response to Subduction

Geology ◽  
1974 ◽  
Vol 2 (11) ◽  
pp. 561 ◽  
Author(s):  
Bobb Carson ◽  
Jennwei Yuan ◽  
Paul B. Myers ◽  
William D. Barnard
Keyword(s):  
Continental Slope ◽  
Deep Sea ◽  
Deep Sea Sediment ◽  
Sediment Deformation

Deep-sea Amphipoda from the western North Atlantic Ocean. Caprellidea

1972 ◽  
Vol 50 (4) ◽  
pp. 371-383 ◽  
Author(s):  
Diana R. Laubitz ◽  
Eric L. Mills
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Continental Slope ◽  
North Atlantic ◽  
Deep Sea ◽  
New Genus ◽  
North Atlantic Ocean ◽  
New Genus And Species ◽  
Cape Hatteras ◽  
A New Species

Five species of Caprellidea (Amphipoda) occur on a benthic transect between Gay Head, Massachusetts and Bermuda. Three species, Caprella rinki Stephensen, Mayerella limicola Huntsman, and Proaeginina norvegica (Stephensen) are refigured and redescribed. A new species of Thorina and a new genus and species are described from bathyal and abyssal depths. All five species are arctic–boreal in affinities and may be expected to range south only to Cape Hatteras on the continental slope, but much farther south at abyssal depths.

Redescription and Distribution of the Rare Deep-Sea Eel Xenomystax atrarius in the Eastern Pacific Ocean

1972 ◽  
Vol 29 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Alex E. Peden
Keyword(s):  
Pacific Ocean ◽  
Continental Slope ◽  
Deep Sea ◽  
Vancouver Island ◽  
Eastern Pacific ◽  
Eastern Pacific Ocean ◽  
Major Revision ◽  
Subjective Synonym

Xenomystax atrarius Gilbert has been considered a possible representative of as many as three eel families (Congridae, Muraenesocidae, and Nettastomidae) by recent authors. Although the species is described in detail in this account, it cannot be definitely assigned to a family without major revision of these families. The species is now known from 19 specimens captured mostly near the continental slope of the eastern Pacific Ocean between Valparaiso, Chile, and Vancouver Island, B.C. Xenomystax rictus Garman 1899 should be considered a junior subjective synonym of X. atrarius Gilbert 1891.

scholarly journals On feeding of deep-sea crabs on the continental slope of northwestern Kamchatka

2016 ◽  
Vol 184 (1) ◽  
pp. 236-240
Author(s):  
Valery I. Chuchukalo ◽  
Victor A. Nadtochy ◽  
Vladimir V. Napazakov ◽  
Oleg Yu. Borilko ◽  
Sergei A. Nuzhdenko
Keyword(s):  
Gastrointestinal Tract ◽  
Continental Slope ◽  
Deep Sea ◽  
Frequent Occurrence ◽  
King Crab ◽  
Common Food ◽  
Tanner Crab ◽  
The Mean ◽  
Main Components

Mean index of gastrointestinal tract fullness for golden king crab Lithodes aequispinus is 15.5 ‱. Detritus occurs in 40.5 % of the cases, so it is a common food for this crab, Polychaeta, Ophiuroidea and Decapoda are 33.2 %, 32.1 % and 15.4 % of its ration, respectively, whereas Mollusca are only 11.5 % of the ration weight, despite of frequent occurrence. Triangle tanner crab Chionoecetes angulatus has the mean index of fullness 20.9 ‱, Polychaeta and Mollusca are two main components of its ration (31.4 % and 27.3 %, respectively) and Decapoda and Pisces are the secondary components (13.9 % and 12.2 %); detritus occurs in 11.2 % of the cases. Cannibalism is observed incidentally for the latter species.

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