The relationship of the zoogeographic distributions of the planktonic ostracods in the North-east Atlantic to the water masses

Author(s):  
M. J. R. Fasham ◽  
M. V. Angel

The quantitative zoogeography of pelagic zooplankton is a subject very much in its infancy. This is due to a number of causes; firstly, the taxonomy of a large number of animal groups has not been finalized and new species are still being regularly discovered. Secondly, many samples, especially from the earlier expeditions, were obtained from broad depth ranges and without accurate depth measurements or the use of opening-closing nets. This latter problem has been overcome by modern sampling devices (e.g. Baker, Clarke & Harris, 1973).Underlying the thinking of a lot of previous workers has been the hypothesis that the water masses of the various oceans (usually delineated by means of temperature-salinity relationships (Sverdrup, Johnson & Fleming, 1942)) support a distinct fauna. This point of view has been summarized by Johnson & Brinton (1963), Banse (1964) and Beklemishev (1966, 1971). Examples of studies in which the relationship of species distributions to water masses have been studied are Pickford (1946; the cephalopod Vampyroteuthis infernalis), David (1958,1963; chaetognaths), Bieri (1959; Pacific chaetognaths), Brinton (1962; Pacific euphausiids), McGowan (i960; the worm Poebius meseres) and Haffner (1952; the fish genus Chauliodus). In the last case it was suggested that the oxygen content of the water was also an important factor.

2008 ◽  
Vol 13 (2) ◽  
pp. 137-140 ◽  
Author(s):  
Trevor Wishart

AbstractCheaply available high-quality digital recording equipment, and the ubiquity of computer music tools and the Internet make the creation of electroacoustic music in diverse localities, and its dissemination around the globe, extremely easy. This raises important questions about the relationship of local sound worlds and cultural experience to a potentially global audience. This quandary is examined through the compositions Globalalia (which deals explicitly with speech material from many languages) and Fabulous Paris – a virtual oratorio whcih uses speech in different ways to contrast our relationship to the local and personal with our relationship to the mass experience of the globalised mega-city. The problems in relating to both a local and a global audience are considered in relation to the composer's current project recording speech materials in local communities in the North East of England.


Author(s):  
M.W. Clarke

A number of chondrichthyan fish species were caught on long-line in the Rockall Trough (north-east Atlantic) in 1997, which are first records for this area; Raja hyperborea, Raja kukujevi and Raja fullonica. The occurrence of R. hyperborea, usually found in colder boreal waters appears to be temperature related. The presence of the deep water squaliform shark Centrophorus uyato in the area was also confirmed and several species were caught at previously undocumented depths.The Rockall Trough is an extension of the North Atlantic deep environment (Mauchline, 1990). A long-line survey was undertaken in August 1997 on the eastern and southern slopes of the Rockall Trough (Figure 1), fishing gear and procedures are described by Connolly (1997). Identifications were undertaken by means of several texts (Compagno, 1984; Whitehead, et al., 1984; Stehmann, 1997). The specimens described below were lodged in the National Museum of Ireland (NMI) and the Hamburg University Zoological Museum, Germany (ZMH). Depth ranges, positions and catalogue numbers of the specimens described are given in Table 1.


1999 ◽  
Vol 13 (2) ◽  
pp. 119-126 ◽  
Author(s):  
Fiona Tilley ◽  
David Johnson

This paper explores the ‘best practice’ interactions between universities and small firms in the UK. The purpose is to identify ways in which a university can build stronger and more effective links with small firms. The relationship between universities and small firms is of growing importance. There are political, economic and educational pressures which influence the behaviour and relationship of higher education toward the business sector, and small firms in particular. The wider context of the changes taking place within higher education are discussed. This is followed by the initial findings from a recently completed research project for the Council for Industry and Higher Education which investigated the foremost components in ‘best practice’ interactions and linkages between small firms and universities in the North East of England. Some preliminary ideas are suggested on how best practice can be further facilitated. These proposals are then interpreted in terms of the operational implications for universities and other strategic organizations involved in building linkages with small firms.


1966 ◽  
Vol 103 (2) ◽  
pp. 124-137 ◽  
Author(s):  
G. G. Lemon

AbstractSix serpentinites occur in the Moinian granulites of the North-East Ox Mountains. Four have been known for some time and have been previously described. Additional information on these and the associated vermiculite deposits is provided. The remaining two serpentinites are described for the first time. A pyroxenite vein associated with one of these may have been produced by meta-morphic regeneration.The relationship of some of these serpentinites to the probable position of the Highland Boundary Fracture-zone in Eire is also discussed. Brief comparison is made with serpentinites occurring in the Scottish Moinian.


2016 ◽  
Vol 67 (1) ◽  
pp. 65 ◽  
Author(s):  
Dan A. Smale ◽  
Thomas Vance

Physical disturbance through wave action is a major determinant of kelp forest structure. The North-east Atlantic storm season of 2013–14 was unusually severe; the south coast of the UK was subjected to 6 of the 12 most intense storms recorded in the past 5 years. Inshore significant wave heights and periods exceeded 7m and 13s with two storms classified as ‘1-in-30 year’ events. We examined the impacts of the storm season on kelp canopies at three study sites. Monospecific canopies comprising Laminaria hyperborea were unaffected by storm disturbance. However, at one study site a mixed canopy comprising Laminaria ochroleuca, Saccharina latissima and L. hyperborea was significantly altered by the storms, due to decreased abundances of the former two species. Quantification of freshly severed stipes suggested that the ‘warm water’ kelp L. ochroleuca was more susceptible to storm damage than L. hyperborea. Overall, kelp canopies were highly resistant to storm disturbance because of the low vulnerability of L. hyperborea to intense wave action. However, if climate-driven shifts in kelp species distributions result in more mixed canopies, as predicted, then resistance to storm disturbance may be eroded.


1991 ◽  
Vol 10 (1) ◽  
pp. 57-67
Author(s):  
F. C. Thomas

Abstract. Core samples from the Paleogene of the Bonavista C-99 well on the northeast Newfoundland shelf and cuttings from downdip Blue H-28 contain foraminiferal assemblages which enable reconstruction of paleoenvironments along a downslope transect in Eocene through Late Oligocene-Miocene time. Comparison with coeval assemblages in North Sea wells with respect to structure and grain size of agglutinated taxa between the two areas reveal inter-basin differences.Reconstruction of the paleobathymetry derived from foraminiferal analysis, confirms seismic evidence for shallowing at the Bonavista site beginning in the Early Oligocene. The relationship of the Bonavista assemblages to contour currents is explored with reference to modern regional analogues. Species such as Reticulophragmium amplectens, Haplophragmoides walteri, Eponides umbonatus and Uvigerina ex. gr. miozea-nuttalli persist stratigraphically higher in the deeper Blue site.The paleoslope of this two-well transect is determined as approximately 0.48° during the Middle to Late Eocene and 0.68° during the Late Oligocene-Early Miocene. The bottom water hydrography of the transect can be evaluated by reference to these assemblages and a comparison to flysch-type agglutinated assemblages from a transect in the North Sea. The presence of an Upper Eocene-Middle Miocene hiatus at the Blue site contrasting with apparently continuous Tertiary deposition at Bonavista places a theoretical upper limit of 500–1000 m on the depth of the early Cenozoic western boundary undercurrent.


Author(s):  
J. Mauchline

SynopsisAnalyses of winter and summer vertical migrations of Meganyctiphanes norvegica are given and the differences in behaviour pointed out. A vertical layering of size classes, larger specimens occurring deeper than smaller ones, is shown to exist during the day and night.Four potential methods of feeding were found. The inter-relationships between vertical migration, feeding method used, and type of food eaten are discussed.The relationship of carapace length to total length was found to depend on the state of maturity of M. norvegica.M. norvegica matures at the age of 1 year, transference of the spermatophores taking place in January-February, the eggs being laid in March-April. The larvae take 2–3 months to reach adolescence and little growth in size takes place in the winter when the gonads are maturing. An age of 3 years may be attained but most only survive 1½—2 years.The distribution within the Clyde Sea throughout the year is described. Most of the population were found to move to the North-east Arran Area for egg-laying.A 24-hr. and annual periodicity of luminescence is described and correlated with the period of swarming of this species prior to spermatophore transference.


2003 ◽  
Vol 1 (2) ◽  
pp. 179-190
Author(s):  
Geoffrey Khan

Abstract The great diversity of the North Eastern Neo-Aramaic dialect group has only partially been studied. This is now an urgent task, since many of the dialects are now in danger of extinction. These dialects exhibit many fascinating linguistic features, which makes their investigation very rewarding. Investigation of these dialects also casts important light on some issues in the historical development of Aramaic and of North-West Semitic languages in general. Some of these issues are discussed in the paper. Particular attention is directed to the relationship of the lexicon of North-East Neo-Aramaic to that of earlier forms of literary Aramaic.


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