Calcareous microorganisms as indicators of oceanographic conditions in South West Atlantic Ocean

2020 ◽  
Vol 208 ◽  
pp. 103369 ◽  
Author(s):  
Emiliana Bernasconi ◽  
Gabriela Cusminsky
2017 ◽  
Vol 91 (4) ◽  
pp. 1224-1227 ◽  
Author(s):  
N. D. Bovcon ◽  
P. D. Cochia ◽  
J. Ruibal Núñez ◽  
M. Vucica ◽  
D. E. Figueroa

Zootaxa ◽  
2004 ◽  
Vol 630 (1) ◽  
pp. 1 ◽  
Author(s):  
CARLOS D. PÉREZ ◽  
MAURICIO O. ZAMPONI

The present study deals with six new records of octocoral species (two alcyoniid soft corals and four primnoid gorgonians) for the south western Atlantic Ocean. These new records, mainly for the gorgonians, improves the knowledge of their present distribution. The species Thouarella koellikeri and Dasystenella acanthina have their known distribution widened, showing in the first case a continuous bioceanic distribution (south east Pacific south west Atlantic). The species of the genus Primnoella, P. biserialis and P. compressa, widen their distributional range tending to a geographical continuity along the south eastern coasts of the American continent, avoiding the zoogeographic barrier constituted by the R o de la Plata.


1952 ◽  
Vol 32 (1-2) ◽  
pp. 21-34 ◽  
Author(s):  
B. H. St. J. O'Neil

The Isles of Scilly, situated in the Atlantic Ocean twenty-eight miles south-west of Land's End in Cornwall, have long been noted for their number of chambered tombs. Borlase bears witness to this, and has often been quoted by later writers. He dug into some of the tombs with disastrous results and many another must have done the same. For in general appearance the tombs of Scilly are like their fellows in many other parts of Britain; their chambers are completely empty. G. Bonsor was fortunate in finding one partly intact on Gugh which he excavated carefully, as is shown by his drawings, published in these pages by Dr. H. O'Neill Hencken. It should be noted that he found evidence of many cremations, but as secondary burials, following a primary inhumation. There was no direct dating evidence available, but the finds included that which until 1948 was the only piece of bronze recorded as found in an English chambered tomb.


Nature ◽  
1933 ◽  
Vol 131 (3302) ◽  
pp. 189-191 ◽  
Author(s):  
A. J. CLOWES

Author(s):  
L. H. N. Cooper

Knowledge of the hydrography of the English Channel and Celtic Sea is needed as a background for the life histories of the mackerel, pilchard and herring and, indeed, of every organism living within range of the Plymouth Laboratory. Such knowledge can never be fully attained until we know more of the exchanges with the deep Atlantic Ocean which take place 200–300 miles to the south-west and west over the continental slope. Moreover, at the slope we shall need to know not only what waters move in and out but what move up and down. Long ago Storrow (1925), and no doubt others, saw clearly some of the problems here to be discussed, but they were unable to bring factual evidence to bear. A critical reconstruction of the considerable but fragmentary observations in the neighbourhood of the continental slope of the Celtic Sea will be presented here and supplemented by observations made in 1950 with the generous co-operation of the vessels of the National Institute of Oceanography (Discovery Committee) and in 1948 by H.M. Surveying Ship Dalrymple. Though many of the conclusions remain tentative, it should now be easier to design observational work at sea to test specific hypotheses at the right time and place by the methods of experimental oceanography. The numerical results in 1950 will be published by the Conseil International pour l'Exploration de la Mer.


The author, who had the command of His Majesty’s ship Algerine, was instructed to take charge of the enterprise commenced by the officers and crew of His Majesty’s ship Lightning, having for its object the recovery of the treasure and stores from the wreck of the Thetis, which, in the month of December 1830, had sunk in a cove to the south-east of Cape Frio. He reached this spot on the 6th of March, 1832, having with him eleven officers and eighty-five men. A certain number of men were appointed to remain on board the ship, which was moored in a harbour two miles off a party of artificers and others were employed at the huts which they inhabited near the Cape; and the rest, nearly thirty-five in number, were stationed at the wreck. The author gives a description of Cape Frio, and of the island of which it forms the south-eastern extremity, and which is an immense promontory of insulated granite jutting into the Atlantic Ocean, sixty miles east of Rio de Janeiro. The cove, in the middle of which the wreck of the Thetis lay, is a square indenture in the cliffs, six hundred feet deep by as many wide. It is surrounded by nearly perpendicular masses of granite, from one hundred to two hundred feet high, and is exposed to the whole swell of the South Atlantic, which sets in with remarkable force in that direction. The weather is singularly variable; and transitions frequently take place in the course of few hours, from perfect stillness to the most tremendous swell. The author states that he has witnessed few scenes in nature more sublime than that presented by the Thetis Cove during a gale of wind from the south-west.


2017 ◽  
Vol 91 (3) ◽  
pp. 968-974 ◽  
Author(s):  
E. Mabragaña ◽  
D. M. Vazquez ◽  
V. Gabbanelli ◽  
D. Sabadin ◽  
S. A. Barbini ◽  
...  
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