Sea lice, Lepeophtheirus salmonis and Caligus elongatus, levels on salmon returning to the west coast of Ireland, 2003

2005 ◽  
Vol 85 (1) ◽  
pp. 87-92 ◽  
Author(s):  
L. Copley ◽  
T.D. Tierney ◽  
F. Kane ◽  
O. Naughton ◽  
S. Kennedy ◽  
...  
Keyword(s):  
West Coast ◽  
Sea Lice ◽  
Lepeophtheirus Salmonis ◽  
The West ◽  
North West ◽  
The North ◽  
Two Samples ◽  
Significant Difference ◽  
Total Female ◽  
Cephalothorax Length

Mobile lice levels of two species of sea lice, Lepeophtheirus salmonis and Caligus elongatus, were examined on two samples of Atlantic salmon from the west coast of Ireland. The samples examined were taken two weeks apart from salmon caught by drift net in June 2003 at two different locations off the west coast of Ireland, one in the north-west and one in the west. Both samples of salmon caught were comparable in terms of numbers of total lice counted. No significant differences in male, female and ovigerous L. salmonis levels between the two samples were recorded, however, a significant difference was recorded between juvenile L. salmonis levels. Morphometric comparisons of male and ovigerous L. salmonis examined for each of the two salmon samples examined revealed some differences. There was a significant difference in male L. salmonis in terms of cephalothorax length between the samples. In the females significant differences were found between cephalothorax length, overall total length and egg length. Significant positive correlations within samples were also observed, between total female body length and both total egg number and egg string length in one of the samples examined.

scholarly journals 2. Report on the Pishes obtained by Mr J. Murray in Deep Water on the North-West Coast of Scotland, between April 1887 and March 1888

1889 ◽  
Vol 15 ◽  
pp. 205-220 ◽  
Author(s):  
A. Günther
Keyword(s):  
Deep Water ◽  
West Coast ◽  
Valuable Contribution ◽  
The West ◽  
North West ◽  
The North ◽  
Form Part ◽  
Bathymetrical Distribution

In the present paper I propose to give the result of my examination of the specimens of fishes which were obtained by Mr John Murray on the West Coast of Scotland, whilst dredging during the last eleven months on board of the “Medusa.” Exact observations as to the bathymetrical distribution of British fishes at certain seasons and localities, such as have been obtained during the cruises of the “Medusa,” are much needed, and if methodically carried out for some years, will prove a most valuable contribution to the British fauna, especially if they are supplemented by similar reports on the invertebrates which were collected simultaneously with, and form part of the food of, the fishe.

scholarly journals II.—Topography: §1.—Gythium and the North-West Coast of the Laconian Gulf

1907 ◽  
Vol 13 ◽  
pp. 219-237 ◽  
Author(s):  
Edward S. Forster
Keyword(s):  
West Coast ◽  
The West ◽  
North West ◽  
The North ◽  
Imaginary Line

I Propose here to discuss briefly the topography of the triangular district which is bounded on the west by the range of Taygetus, on the east by the sea from the mouth of the Eurotas to the Bay of Skutari, and on the north by an imaginary line drawn from the mouth of the Eurotas due west to Taygetus.

scholarly journals Initial observations of the shallow geology in Tannis Bugt, Skagerrak, Denmark

2018 ◽  
pp. 33-38
Author(s):  
Matthew J. Owen ◽  
Nicky H. Witt ◽  
Zyad Al-Hamdani ◽  
Niels Nørgaard-Pedersen ◽  
Katrine J. Andresen ◽  
...  
Keyword(s):  
West Coast ◽  
Geophysical Survey ◽  
Habitat Mapping ◽  
Geological Survey ◽  
Large Area ◽  
The West ◽  
North West ◽  
The North ◽  
Shallow Bay ◽  
Shallow Geology

During August 2017, as part of the habitat mapping of Natura2000 areas, a geophysical survey of a large area within the Skagerrak was undertaken by the Geological Survey of Denmark and Greenland. In this article, we use the acquired data to discuss the geology of Tannis Bugt (Fig. 1), a large shallow bay at the north-west coast of Vendsyssel. The bay extends 40 km between Hirtshals in the west and Skagen in the east forming the northern-most Danish Skagerrak coast.

2. Remarks on the Boulder Report

1880 ◽  
Vol 10 ◽  
pp. 192-199
Keyword(s):  
West Coast ◽  
The West ◽  
North West ◽  
The North ◽  
South West

This Report contains information applicable to three districts of country, namely—1.Pentland Hills.2.Morayshire.3.Islands of the West Coast, and part of the Mainland.The impression hitherto had been, that the boulders on these hills indicated a movement exclusively from the north-west; and there is no doubt that the mica slate boulders on these hills indicate such a direction; but Messrs Somervail & Henderson, in the notes contained in this Report, have discovered a separate movement from the west-south-west, by the occurrence of certain sandstone blocks, which they think can be traced to a particular hill or hills in the Pentland range. This point is so important, that it is hoped further inquiry may be made regarding it.

The Scottish Herring Trade, 1470–1600

2005 ◽  
Vol 84 (2) ◽  
pp. 149-165 ◽  
Author(s):  
Martin Rorke
Keyword(s):  
Sixteenth Century ◽  
West Coast ◽  
North West ◽  
Capital Costs ◽  
The North ◽  
East And West

This paper uses customs figures to show that herring exports from the east and west coast lowlands expanded significantly in the last six decades of the sixteenth century. The paper argues that the rise was primarily due to the north-west Highland fisheries being opened up and exploited by east and west coast burghs. These ventures required greater capital supplies and more complex organisation than their local inshore fisheries and they were often interrupted by political hostilities. However, the costs were a fraction of those required to establish a deepwater buss fleet, enabling Scotland to expand production and take advantage of European demand for fish while minimising additional capital costs.

scholarly journals Geochemical and isotopic evidence of groundwater salinization processes in the Essaouira region, north-west coast, Morocco

2021 ◽  
Vol 3 (7) ◽  
Author(s):  
Otman EL Mountassir ◽  
Mohammed Bahir ◽  
Driss Ouazar ◽  
Abdelghani Chehbouni ◽  
Paula M. Carreira
Keyword(s):  
Groundwater Recharge ◽  
West Coast ◽  
Exchange Process ◽  
Environmental Isotopes ◽  
Annual Rainfall ◽  
Groundwater Salinization ◽  
Rock Interaction ◽  
North West ◽  
The North ◽  
Water Rock Interaction

AbstractThe city of Essaouira is located along the north-west coast of Morocco, where groundwater is the main source of drinking, domestic and agricultural water. In recent decades, the salinity of groundwater has increased, which is why geochemical techniques and environmental isotopes have been used to determine the main sources of groundwater recharge and salinization. The hydrochemical study shows that for the years 1995, 2007, 2016 and 2019, the chemical composition of groundwater in the study area consists of HCO3–Ca–Mg, Cl–Ca–Mg, SO4–Ca and Cl–Na chemical facies. The results show that from 1995 to 2019, electrical conductivity increased and that could be explained by a decrease in annual rainfall in relation to climate change and water–rock interaction processes. Geochemical and environmental isotope data show that the main geochemical mechanisms controlling the hydrochemical evolution of groundwater in the Cenomanian–Turonian aquifer are the water–rock interaction and the cation exchange process. The diagram of δ2H = 8 * δ18O + 10 shows that the isotopic contents are close or above to the Global Meteoric Water Line, which suggests that the aquifer is recharged by precipitation of Atlantic origin. In conclusion, groundwater withdrawal should be well controlled to prevent groundwater salinization and further intrusion of seawater due to the lack of annual groundwater recharge in the Essaouira region.

Excavations at Fishbourne, 1963. Third Interim Report

1964 ◽  
Vol 44 (1) ◽  
pp. 1-8
Keyword(s):  
Interim Report ◽  
The West ◽  
Civic Society ◽  
North West ◽  
The Third ◽  
North East ◽  
The North ◽  
The Future ◽  
Set Up

Early in 1963 much of the land occupied by the Roman building at Fishbourne was purchased by Mr. I. D. Margary, M.A., F.S.A., and was given to the Sussex Archaeological Trust. The Fishbourne Committee of the trust was set up to administer the future of the site. The third season's excavation, carried out at the desire of this committee, was again organized by the Chichester Civic Society.1 About fifty volunteers a day were employed from 24th July to 3rd September. Excavation concentrated upon three main areas; the orchard south of the east wing excavated in 1962, the west end of the north wing, and the west wing. In addition, trial trenches were dug at the north-east and north-west extremities of the building and in the area to the north of the north wing. The work of supervision was carried out by Miss F. Pierce, M.A., Mr. B. Morley, Mr. A. B. Norton, B.A., and Mr. J. P. Wild, B.A. Photography was organized by Mr. D. B. Baker and Mrs. F. A. Cunliffe took charge of the pottery and finds.

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