Monopseudocuma a new genus from the North East Atlantic and redescription of Pseudocuma gilsoni Bacescu, 1950 (Cumacea: Pseudocumatidae)

Zootaxa ◽  
2006 ◽  
Vol 1203 (1) ◽  
pp. 39
Author(s):  
ALISON M. MCCARTHY ◽  
SARAH GERKEN ◽  
DAVID MCGRATH ◽  
GRACE P. MCCORMACK
Keyword(s):  
North Sea ◽  
West Coast ◽  
New Genus ◽  
East Atlantic ◽  
The West ◽  
The Past ◽  
North East ◽  
The North ◽  
The North Sea

The validity of Pseudocuma gilsoni B|cescu 1950 has been questioned in the past. The recent discovery of material in Irish waters, and in the North Sea, confirms the presence of the species in the North East Atlantic and provides the opportunity to present a full redescription. A new genus, Monopseudocuma, is erected to accommodate the species. A neotype is designated from the West coast of Ireland.

Changes in Western mackerel (Scomber scombrus) spawning stock composition during the spawning season

1986 ◽  
Vol 66 (2) ◽  
pp. 367-383 ◽  
Author(s):  
Wendy A. Dawson
Keyword(s):  
North Sea ◽  
Stock Assessment ◽  
East Atlantic ◽  
The West ◽  
Scomber Scombrus ◽  
North East ◽  
The North ◽  
Spawning Stock ◽  
The North Sea ◽  
Central North Sea

INTRODUCTIONTwo groups of mackerel (Scomber scombrus L.) are recognised by the International Council for the Exploration of the Sea (I.C.E.S.) for stock assessment purposes in the north-east Atlantic. The North Sea ‘stock’, which overwinters along the edge of the Norwegian Trench and spawns off the south coast of Norway, in the Skagerrak, Kattegat and the central North Sea (Hamre, 1980), and the Western ‘stock’, which overwinters and spawns along the edge of the continental shelf from the west of Ireland to the Bay of Biscay (Lockwood, Nichols & Dawson, 1981).

Exceptional influx of oceanic species into the North Sea late 1997

1999 ◽  
Vol 79 (4) ◽  
pp. 737-739 ◽  
Author(s):  
M. Edwards ◽  
A.W.G. John ◽  
H.G. Hunt ◽  
J.A. Lindley
Keyword(s):  
North Sea ◽  
Indicator Species ◽  
Climatic Conditions ◽  
Historical Evidence ◽  
East Atlantic ◽  
North East ◽  
The North ◽  
The North Sea ◽  
Oceanic Species

Continuous Plankton Recorder records from the North Sea and north-east Atlantic from September 1997 to March 1998 indicate an exceptional influx of oceanic indicator species into the North Sea. These inflow events, according to historical evidence, have only occurred sporadically during this century. This exceptional inflow and previous inflow events are discussed in relation to their similarity in terms of their physical and climatic conditions.

scholarly journals Why do jellyfish bloom in Norwegian waters and what can be done to recover the ecosystems in the North Sea and on the Norwegian coast?

2017 ◽  
Author(s):  
Johannes Hamre
Keyword(s):  
North Sea ◽  
West Coast ◽  
Trophic Levels ◽  
The West ◽  
Fish Stocks ◽  
Norwegian Coast ◽  
The North ◽  
Key Species ◽  
Wide Range ◽  
The North Sea

The ecosystems with their relationships between fish species and stocks, have been established by evolution for millions of years, but during the last 50 years, the ecosystems in the North Sea and along the Norwegian coast have been changed fundamentally by fisheries. The North Sea mackerel stock has been depleted and its feeding grounds have been invaded by the Western mackerel which spawns west of Ireland. This stock is now very rich in numbers and occupies the North Sea, the Norwegian Sea and the western Barents Sea. If the trend continues, mackerel may outcompete many of the other fish stocks in the area. Traditionally and until the beginning of the 1970s, there was a large stock of sandeel spawning in the North Sea and on the Norwegian coast. Sandeel juveniles was an important food source for a wide range of species, including sea mammals and birds. The fact that this stock has also been overfished, may explain many changes observed in the ecosystem on the west coast of Norway, for example a large reduction in the populations of sea birds. There are several instances where ecosystems shift to sustain jellyfish blooms in response to depletion of forage fish stocks. This was registered in Namibia in the 1990’s, where the pilchard stock was decimated and the biomass of jellyfish soon became overwhelming. On the west-coast of Norway, there are now frequent blooms of jellyfish, yet another indication that a controlling factor is missing in the system, in this case sandeel, which is a key species in the transfer of nutrients from zooplankton to higher trophic levels in the area. In this paper, I give a description of the situation and some suggested measures that should be taken in fisheries management.

The ecology and reproductive biology of Cherbonniera utriculus and Molpadia blakei from the N.E. Atlantic

1987 ◽  
Vol 67 (2) ◽  
pp. 385-397 ◽  
Author(s):  
P. A. Tyler ◽  
D. S. M. Billett ◽  
J. D. Gage
Keyword(s):  
New Genus ◽  
Great Variability ◽  
The Arctic ◽  
New Genus And Species ◽  
East Atlantic ◽  
Norwegian Sea ◽  
The Past ◽  
North East ◽  
The North ◽  
History Of

The Molpadiida is an order of sea cucumbers identified by their stout body, the posterior region narrowing to simulate a tail and the absence of tubefeet. Typically they inhabit muddy environments from shallow water to abyssal depths. In the past the great variability in the taxonomic characters of this order has led to the formation of many genera and species (Heding, 1931, 1935), but more recently it has become apparent that many diagnostic characters change markedly during the life history of these holothurians and as a result fewer species are now recognised (Deichmann, 1940; Pawson, 1977). In a revision of the Atlantic molpadiids Deichmann (1940) recorded just three species from the north-east Atlantic (Molpadia blakei, M. musculus and Hedingia albicans) with a further three species from the Arctic Ocean and Norwegian Sea (M. arctica, M. borealis and Eupyrgus scaber). To these Sibuet (1974) added the new genus and species Cherbonniera utriculus found in the Bay of Biscay.

29 North-East Atlantic and the North Sea

2015 ◽  
Author(s):  
Long Ronán
Keyword(s):  
North Sea ◽  
Law Of The Sea ◽  
East Atlantic ◽  
Political Factors ◽  
Basic Principles ◽  
North East ◽  
The North ◽  
The North Sea ◽  
The Law ◽  
The Uk

This chapter assesses the legal regime of the North-East Atlantic and the North Sea. It begins by discussing some of the geographical, economic, environmental, strategic, and geo-political factors that are shaping the very distinctive regional regimes that give effect to the basic principles, as well as to many of the substantive provisions embodied in the UN Nations Convention on the Law of the Sea (LOSC) and related agreements. It provides a summary of the various maritime jurisdictional zones and boundaries claimed by the twelve coastal States that make-up the region: Belgium, Denmark, France, Germany, Iceland, Ireland, the Netherlands, Norway, Portugal, Spain, Sweden, and the UK. This is followed by a description of some of the principal regional bodies responsible for formulating and implementing various aspects of the law of the sea, including the regional seas environmental body, the EU and several fisheries management organizations.

Lampropidae (Crustacea: Cumacea) from the deep north-east Atlantic and the North Sea, with two new species of Hemilamprops and Mesolamprops

2007 ◽  
Vol 87 (5) ◽  
pp. 1191-1200 ◽  
Author(s):  
Salma H. Shalla ◽  
John D.D. Bishop
Keyword(s):  
New Species ◽  
North Sea ◽  
North Atlantic ◽  
First Record ◽  
East Atlantic ◽  
North East ◽  
The North ◽  
The North Sea ◽  
The North Atlantic ◽  
A New Species

Material collected during surveys of the Atlantic Frontier Margin (north-east Atlantic) in 1996, 1998, 2000 and 2002 includes ten species of the cumacean family Lampropidae belonging to three genera. A new species of the genus Hemilamprops, H. pterini, is described. Hemilamprops cristatus is partially re-illustrated from specimens sent to A.M. Norman by G.O. Sars. A key to the North Atlantic species of Hemilamprops is provided. A new species of the genus Mesolamprops, M. hartleyi, is described from the Atlantic Frontier Margin and the North Sea. The first record of Mesolamprops denticulatus from the Atlantic is reported. A key to the species of Mesolamprops is provided. Two species of the genus Platysympus were also found. A list of other lampropid species found in the Atlantic Frontier Margin is given.

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