Description and Distribution of New Specimens of the Fish Lipogenys gilli from the Western North Atlantic

1973 ◽  
Vol 30 (10) ◽  
pp. 1559-1564 ◽  
Author(s):  
Wilfred Templeman
Keyword(s):  
Continental Slope ◽  
North Atlantic ◽  
Standard Length ◽  
Single Specimen ◽  
Scotian Shelf ◽  
Vertebral Number ◽  
Rare Fish ◽  
Nova Scotian

Nine specimens of the rare fish Lipogenys gilli Goode and Bean, 1895, previously known from a single specimen taken off Maryland in 1887, were taken between 1957 and 1970 along the continental slope of the Nova Scotian Shelf to southwestern Grand Bank, at depths of about 400–800 m. These specimens, 238–375 mm in standard length, have a remarkably low variation in vertebral number (228–234). From the additional specimens the description of the species is considerably extended.

Rare Skates of the Newfoundland and Neighbouring Areas

1965 ◽  
Vol 22 (2) ◽  
pp. 259-279 ◽  
Author(s):  
Wilfred Templeman
Keyword(s):  
Continental Slope ◽  
East Coast ◽  
First Record ◽  
Baffin Island ◽  
Body Proportions ◽  
Scotian Shelf ◽  
Raja Erinacea ◽  
Previous Record ◽  
West Greenland ◽  
Nova Scotian

Raja erinacea is reported from the east coast of Newfoundland, a first record from the Newfoundland area. Raja hyperborea is recorded from east of Baffin Island, 60 nautical miles south of the most southerly previous record on this coast. Raja jenseni and Raja mollis have been found on the southwest slope of the Grand Bank, and Raja mollis on the continental slope off northeast Newfoundland and Baffin Island. These are northward and eastward extensions of range from the southern part of the Nova Scotian Shelf. Two individuals of Raja lintea are recorded from Flemish Cap, the first record of this species west and south of West Greenland. Body proportions and other characteristics of the rare skates are discussed in relation to those reported by previous authors.

scholarly journals Flow of Antarctic Bottom Water from the Vema Channel 

2020 ◽  
Author(s):  
Eugene G Morozov ◽  
Dmitry I. Frey ◽  
Roman Y. Tarakanov
Keyword(s):  
Continental Slope ◽  
Water Flow ◽  
North Atlantic ◽  
Bottom Water ◽  
The Other ◽  
Antarctic Bottom Water ◽  
The North ◽  
The North Atlantic ◽  
Current Flows ◽  
Western Wall

Abstract We analyze measurements of bottom currents and thermohaline properties of water north of the Vema Channel with the goal to find pathway continuations of Antarctic Bottom Water flow from the Vema Channel into the Brazil Basin. The analysis is based on CTD/LADCP casts north of the Vema Channel. The flow in the deep Vema Channel consists of two branches. The deepest current flows along the bottom in the center of the channel and the other branch flows above the western wall of the channel. We found two smaller channels of the northern continuation of the deeper bottom flow. These flows become weak and almost disappear at a latitude of 25°30’S. The upper current flows at a depth of 4100-4200 m along the continental slope. We traced this current up to 24°S over a distance exceeding 250 km. This branch transports bottom water that eventually fills the deep basins of the North Atlantic.

scholarly journals Diagnosing transit times on the northwestern North Atlantic continental shelf

2018 ◽  
Author(s):  
Krysten Rutherford ◽  
Katja Fennel
Keyword(s):  
North Atlantic ◽  
Gulf Of Maine ◽  
Circulation Model ◽  
Shelf Break ◽  
Genetic Connectivity ◽  
Western Boundary ◽  
Coastal Current ◽  
Scotian Shelf ◽  
Grand Banks ◽  
Transit Times

Abstract. The circulation in the northwestern North Atlantic Ocean is highly complex, characterized by the confluence of two major western boundary current systems and several shelf currents. Here we present the first comprehensive analysis of transport paths and timescales for the northwestern North Atlantic shelf, which is useful for estimating ventilation rates, describing circulation and mixing, characterizing the composition of water masses with respect to different source regions, and elucidating rates and patterns of biogeochemical processing, species dispersal and genetic connectivity. Our analysis uses dye and age tracers within a high-resolution circulation model of the region, divided into 9 sub-regions, to diagnose retention times, transport pathways, and transit times. Retention times are shortest on the Scotian Shelf (~ 3 months) where the inshore and shelf-break branches of the coastal current system result in high along-shelf transport to the southwest. Larger retention times are simulated on the Grand Banks (~ 4 months), in the Gulf of St. Lawrence (~ 12 months) and the Gulf of Maine (~ 6 months). Source water analysis shows that Scotian Shelf water is primarily comprised of waters from the Grand Banks and Gulf of St. Lawrence, with varying composition across the shelf. Contributions from the Gulf of St. Lawrence are larger at near-shore locations, whereas locations near the shelf break have larger contributions from the Grand Banks and slope waters. Waters from the deep slope have little connectivity with the shelf, because the shelf-break current inhibits transport across the shelf break. Grand Banks and Gulf of St. Lawrence waters are therefore dominant controls on biogeochemical properties, and on setting and sustaining planktonic communities on the Scotian Shelf.

scholarly journals Modeling the influence of low-salinity water inflow on winter-spring phytoplankton dynamics in the Nova Scotian Shelf–Gulf of Maine region

2008 ◽  
Vol 30 (12) ◽  
pp. 1399-1416 ◽  
Author(s):  
Rubao Ji ◽  
Cabell S. Davis ◽  
Changsheng Chen ◽  
David W. Townsend ◽  
David G. Mountain ◽  
...  
Keyword(s):  
Gulf Of Maine ◽  
Water Inflow ◽  
Phytoplankton Dynamics ◽  
Scotian Shelf ◽  
Low Salinity ◽  
Low Salinity Water ◽  
Salinity Water ◽  
Nova Scotian

A new species of the mesopelagic isopod genus Xenuraega Tattersall, 1909 (Crustacea: Isopoda: Aegidae) from Japan, the second species in the genus

Zootaxa ◽  
2019 ◽  
Vol 4683 (3) ◽  
pp. 431-438
Author(s):  
MICHITAKA SHIMOMURA ◽  
NIEL L. BRUCE
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
North Atlantic ◽  
Type Locality ◽  
Single Specimen ◽  
Southern Japan ◽  
Kagoshima Prefecture ◽  
Northern Pacific ◽  
A New Species

Xenuraega bythionekta sp. nov., is described from a single specimen taken off southern Japan. It is the second species of Xenuraega Tattersall, 1909, and extends the known range of the genus from North Atlantic to the northern Pacific Ocean. The species is characterized by the posteriorly narrowed pleotelson, and both uropodal rami being elongate and provided with a mass of long plumose setae. Xenuraega bythionekta sp. nov. is known only from the type locality, Kagoshima Prefecture, southern Japan at a depth of 1178–1179 m. 

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