scholarly journals Bottom Fish Assemblages at the Shelf and Continental Slope off East Greenland

2015 ◽  
Vol 47 ◽  
pp. 37-55 ◽  
Author(s):  
O A Jorgensen ◽  
C Hvingel ◽  
P R Moller
Keyword(s):  
Continental Slope ◽  
Fish Assemblages ◽  
East Greenland ◽  
Bottom Fish

Identification and Mapping of Bottom Fish Assemblages in Northern Baffin Bay

2011 ◽  
Vol 43 ◽  
pp. 65-79 ◽  
Author(s):  
O A Jorgensen ◽  
C Hvingel ◽  
M A Treble
Keyword(s):  
Fish Assemblages ◽  
Baffin Bay ◽  
Bottom Fish

Estimating the Abundance of Bottom Fish at the Shelf and Continental Slope in Northern Primorye

2019 ◽  
Vol 59 (4) ◽  
pp. 591-601
Author(s):  
D. G. Kravchenko ◽  
D. V. Izmyatinsky
Keyword(s):  
Continental Slope ◽  
Bottom Fish ◽  
Northern Primorye

Recent glacially influenced sedimentary processes on the East Greenland continental slope and deep Greenland Basin

2012 ◽  
Vol 49 ◽  
pp. 64-81 ◽  
Author(s):  
Marga García ◽  
Julian A. Dowdeswell ◽  
Gemma Ercilla ◽  
Martin Jakobsson
Keyword(s):  
Continental Slope ◽  
Sedimentary Processes ◽  
East Greenland ◽  
Greenland Basin

scholarly journals Linking spatial pattern of bottom fish assemblages with water masses in the North Sea

2009 ◽  
Vol 18 (1) ◽  
pp. 36-50 ◽  
Author(s):  
SIEGFRIED EHRICH ◽  
VANESSA STELZENMÜLLER ◽  
SARA ADLERSTEIN
Keyword(s):  
Spatial Pattern ◽  
North Sea ◽  
Fish Assemblages ◽  
Water Masses ◽  
The North ◽  
Bottom Fish ◽  
The North Sea

scholarly journals On the Cascading of Dense Shelf Waters in the Irminger Sea

2012 ◽  
Vol 42 (12) ◽  
pp. 2254-2267 ◽  
Author(s):  
Anastasia Falina ◽  
Artem Sarafanov ◽  
Herlé Mercier ◽  
Pascale Lherminier ◽  
Alexey Sokov ◽  
...  
Keyword(s):  
Continental Slope ◽  
Western Boundary ◽  
Boundary Current ◽  
East Greenland ◽  
Low Salinity ◽  
East Greenland Current ◽  
Irminger Sea ◽  
Deep Western Boundary Current ◽  
Deep Waters ◽  
Denmark Strait

Abstract Hydrographic data collected in the Irminger Sea in the 1990s–2000s indicate that dense shelf waters carried by the East Greenland Current south of the Denmark Strait intermittently descend (cascade) down the continental slope and merge with the deep waters originating from the Nordic Seas overflows. Repeat measurements on the East Greenland shelf at ~200 km south of the Denmark Strait (65°–66°N) reveal that East Greenland shelf waters in the Irminger Sea are occasionally as dense (σ0 > 27.80) as the overflow-derived deep waters carried by the Deep Western Boundary Current (DWBC). Clear hydrographic traces of upstream cascading of dense shelf waters are found over the continental slope at 64.3°N, where the densest plumes (σ0 > 27.80) originating from the shelf are identified as distinct low-salinity anomalies in the DWBC. Downstream observations suggest that dense fresh waters descending from the shelf in the northern Irminger Sea can be distinguished in the DWBC up to the latitude of Cape Farewell (~60°N) and that these waters make a significant contribution to the DWBC transport.

scholarly journals Functional, size and taxonomic diversity of fish along a depth gradient in the deep sea

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2387 ◽  
Author(s):  
Beth L. Mindel ◽  
Francis C. Neat ◽  
Clive N. Trueman ◽  
Thomas J. Webb ◽  
Julia L. Blanchard
Keyword(s):  
Species Richness ◽  
Continental Slope ◽  
Functional Diversity ◽  
Deep Sea ◽  
Morphological Traits ◽  
Fish Assemblages ◽  
Functional Divergence ◽  
Feeding Guilds ◽  
Functional Richness ◽  
Size Diversity

Biodiversity is well studied in ecology and the concept has been developed to include traits of species, rather than solely taxonomy, to better reflect the functional diversity of a system. The deep sea provides a natural environmental gradient within which to study changes in different diversity metrics, but traits of deep-sea fish are not widely known, hampering the application of functional diversity to this globally important system. We used morphological traits to determine the functional richness and functional divergence of demersal fish assemblages along the continental slope in the Northeast Atlantic, at depths of 300–2,000 m. We compared these metrics to size diversity based on individual body size and species richness. Functional richness and size diversity showed similar patterns, with the highest diversity at intermediate depths; functional divergence showed the opposite pattern, with the highest values at the shallowest and deepest parts of the study site. Species richness increased with depth. The functional implications of these patterns were deduced by examining depth-related changes in morphological traits and the dominance of feeding guilds as illustrated by stable isotope analyses. The patterns in diversity and the variation in certain morphological traits can potentially be explained by changes in the relative dominance of pelagic and benthic feeding guilds. All measures of diversity examined here suggest that the deep areas of the continental slope may be equally or more diverse than assemblages just beyond the continental shelf.

Identification and mapping of bottom fish assemblages in Davis Strait and southern Baffin Bay

2005 ◽  
Vol 62 (8) ◽  
pp. 1833-1852 ◽  
Author(s):  
O A Jørgensen ◽  
C Hvingel ◽  
P R Møller ◽  
M A Treble
Keyword(s):  
Fish Assemblages ◽  
Fish Fauna ◽  
Multinomial Logit Model ◽  
The Arctic ◽  
Arctic Seas ◽  
Standard Type ◽  
Baffin Bay ◽  
The North ◽  
Davis Strait ◽  
Bottom Fish

The bathymetry of Baffin Bay, with shallow sills both to the north and south, creates a relatively isolated body of deep polar water, unique among the Arctic Seas. During 263 trawl hauls completed during October 1999 and September to November 2001, 116 fish species were collected in Davis Strait and the southern Baffin Bay (61°44.1′ N–73°52.8′ N, depths of 145–1484 m). The abundance data for the 80 benthic species were used for analyses of the fish fauna diversity and fish assemblages. As a first step, seven assemblages were found by a standard type of cluster analysis. A Bayesian multinomial logit model was then applied to calculate vectors of probabilities defining the likelihood of each haul belonging to each of the seven clusters. The spatial distribution of the conditional probabilities for each cluster (assemblage) was mapped by means of a geostatistical tool. Each assemblage was further defined by indicator species, depth, and temperature. Four of the assemblages were found in Baffin Bay, two in Davis Strait and one mainly in Davis Strait but scattered into Baffin Bay.

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