scholarly journals Trace metal distribution in pelagic fish species from the north-west African coast (Morocco)

2018 ◽  
Vol 10 (2) ◽  
pp. 191-205 ◽  
Author(s):  
Imane Afandi ◽  
Sophia Talba ◽  
Ali Benhra ◽  
Samir Benbrahim ◽  
Rachid Chfiri ◽  
...  
Author(s):  
Alexander I. Arkhipkin ◽  
Vladimir V. Laptikhovsky

Length composition, maturation and growth of the ommastrephid squid Todaropsis eblanae were studied using length–frequency distributions (LFDs) and statoliths of squid caught off the north-west African coast. Length–frequency distributions were quite similar in all seasons studied, indicating all year round spawning. However, both high proportions of mature squid in the winter and the hatching peak of squid from our sample in spring suggested the winter–spring peak of spawning. Immature and maturing squid had rather high growth rates, attaining 140—150 mm of dorsal mantle length (ML) by the age of 160—170 d. Todaropsis eblanae is likely to have an annual life cycle on the north-west African shelf.


2008 ◽  
pp. 133-168
Author(s):  
Mark C. Hunter

This chapter analyses the British naval policies concerning West Africa between 1843 and 1857. During this period, Britain sought to encourage legitimate commerce and curtail slavery for its own economic interest, while domestically America feared the British domination of the West African coast. As such, suspicion and mistrust was rife between the two nations, and is in great detail via the abolitionist activity in the North of England; the actions of free traders and slavers; Royal Navy operations; the competition for trade between Britain and France; Commodore Charles Hotham’s slavery suppressing naval strategy; British free trade treaties; and the naval methods of enforcing British goals. It concludes in 1857, with British interests torn between strategic naval aims and domestic pressures, and British and American diplomacy still tense over West African policies.


1956 ◽  
Vol 12 (1) ◽  
pp. 56-80 ◽  
Author(s):  
J. D. Hargreaves

The Colony of Sierra Leone originated in settlements of freed slaves on the West African coast carried out on the initiative of British philanthropists in the later eighteenth century. For over a century, British responsibility was as far as possible restricted to the small mountainous peninsula on which Freetown stands, and to certain nearby islands; but influence was inevitably obtained over nearby coast and hinterland, and during the nineteenth century some additional territories were incorporated in the Colony, though not always brought under effective administration. In 1896 the remaining regions not conceded to be under French or Liberian influence were proclaimed a British Protectorate; which also included, for administrative purposes, certain chiefdoms formerly part of the Colony. In this period, therefore, the term ‘Colony’ is applied to the peninsula and islands originally settled, with a few predominantly tribal areas around the river Sherbro; the term ‘Protectorate’ to territories the size of Ireland, which form the great bulk of the area marked ‘Sierra Leone’ on a modern map, and whose social organization was at this time exclusively tribal. At the beginning of 1898 British officials began to collect a House Tax which had been imposed on three of the five districts of the Protectorate. In February, resistance to the tax by certain Temne chiefs developed into open warfare in the north, and at the end of April a series of savage attacks took place on British and American subjects, mostly of African birth and descent, among the Mende and Sherbro people further south. These two outbreaks constitute the insurrection to be studied in this paper.


2017 ◽  
Vol 47 (1) ◽  
pp. 81-84
Author(s):  
Mafalda Freitas ◽  
Sofia Vieira ◽  
Luisa Costa ◽  
Joao Delgado ◽  
Manuel Biscoito ◽  
...  

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