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  • ASFA15::F::Fisheries  (4)
  • Analytical Chemistry and Spectroscopy
  • Chemistry
  • Electronic structure and strongly correlated systems
  • Engineering
  • Inorganic Chemistry
  • Paris, France  (5)
  • 2015-2019  (5)
  • 1990-1994
  • 1915-1919
Collection
Keywords
Publisher
Years
  • 2015-2019  (5)
  • 1990-1994
  • 1915-1919
Year
  • 1
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    Sur l'eau normale méditerraneenne: 1ère partie: Historique, discussion des méthodes, propositions (2016)
    Station Océanographique de Salammbô | Paris, France
    Details
    Publication Date: 2021-05-19
    Description: La détermination de la chloruration des eaux de mer est effectuée depuis de nombreuses années par la méthode volémetrisque de Moher.
    Description: Published
    Keywords: Volumetric analysis ; Sea water ; Chemistry ; Density ; Water density ; Chlorination ; Methodology ; Marine
    Repository Name: AquaDocs
    Type: Book/Monograph/Conference Proceedings , Refereed
    Format: 28pp.
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  • 2
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    Pelagic fish stocks and their response to fisheries and environmental variation in the Canary Current Large Marine Ecosystem (2016)
    IOC-UNESCO | Paris, France
    Details
    Publication Date: 2021-05-19
    Description: Pelagic fish stocks are the most important fish stocks in terms of biomass and catches in the Canary Current Large Marine Ecosystem. The small pelagic stocks include species with an affinity for temperate waters (sardine, chub mackerel and Atlantic horse mackerel) and species that prefer tropical waters (sardinella and Cunene horse mackerel). Hence, the distribution of the various stocks is strongly determined by the seasonal displacement of the tropical front. As small pelagic fish feed primarily on plankton, changes in primary production may affect the abundance of the stocks. The waters of the Canary Current have shown a drop in primary production over the past three decades, which may be related to the observed increase in water temperature. However, the drop in primary production is not yet reflected by the pelagic fish catches. On the other hand, changes in the abundance and distribution of sardine and sardinella are probably the effect of climatic change. Present management of small pelagics is hampered by a lack of scientific data. Because these stocks are very important to the human population of the region, good quality data should be collected in order to improve the assessments.
    Description: Published
    Keywords: Environment ; Tuna ; Climate change ; CCLME ; ASFA15::P::Pelagic fish ; ASFA15::F::Fisheries
    Repository Name: AquaDocs
    Type: Report Section , Refereed
    Format: pp. 197-213
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  • 3
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    Cephalopods in the Canary Current Large Marine Ecosystem (2016)
    IOC-UNESCO | Paris, France
    Details
    Publication Date: 2021-05-19
    Description: This work presents a brief review of cephalopod fauna found in the Canary Current Large Marine Ecosystem waters in terms of biodiversity, ecology and fisheries. This large marine ecosystem presents 139 cephalopod species, including high commercial value groups (Ommastrephids, Loliginids, Octopods and Sepiids), corresponding to a transitional zone between different Atlantic zoogeographic provinces where tropical, temperate and cold water cephalopod species mix. Several assemblages can be identified in the coastal, shelf, slope and deep waters. Coastal assemblages are dominated by sepiids, loliginids and shallow-water octopus, while more oceanic assemblages are largely dominated by ommastrephid and deep-water octopus species. Cephalopod populations in the area can maintain local and international fisheries for these resources. Loliginid and sepiid species constitute substantial resources exploited by coastal fisheries. Ommastrephid squids probably represent the main potential resource for cephalopod pelagic and trawl fisheries in the area. Three species (Todarodes sagittatus, Illex coindetii and Todaropsis eblanae) present great potential for fisheries in the zone.
    Description: Published
    Keywords: Cephalopoda ; List of species ; Cephalopod assemblages ; CCLME ; ASFA15::F::Fisheries
    Repository Name: AquaDocs
    Type: Report Section , Refereed
    Format: pp. 245-255
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  • 4
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    Demersal fish in the Canary Current Large Marine Ecosystem (2016)
    IOC-UNESCO | Paris, France
    Details
    Publication Date: 2021-05-19
    Description: Demersal ichthyofauna is both the most diverse and the most abundant component in terms of biomass, of the marine shelf and slope ecosystems. Within the Canary Current Large Marine Ecosystem (CCLME), Northwestern African waters hold a fish fauna even more diverse than that of Northeast Atlantic. The convergence of ichthyofaunal components of both temperate and tropical affinities results in a very biodiverse central zone, mainly in Mauritanian waters, where the transition from one faunal type to another is observed. The CCLME supports substantial demersal fish resources whose total catches decline constantly. The FAO assessments show that many important stocks are here overexploited. Species richness is minimum in waters shallower than 400 m, probably due to the heavy fishing pressure exerted over the shelf and upper slope in past decades. Conversely, deep waters are the most biodiverse, particularly between 1000 m and 1700 m depth. Northwestern African waters need to be managed both to avoid overexploitation and to ensure the protection of highly vulnerable species living on very sensitive marine ecosystems of the middle and deep continental slopes, still unexploited. A great effort of cooperation within the various actors involved in the regional fishing policies is required to ensure a sustainable management of the marine resources.
    Description: Published
    Keywords: CCLME ; ASFA15::D::Demersal fish ; ASFA15::B::Biodiversity ; ASFA15::F::Fisheries ; ASFA15::C::Continental shelf ; ASFA15::C::Continental slope
    Repository Name: AquaDocs
    Type: Report Section , Refereed
    Format: pp. 215-229
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  • 5
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    Biodiversity and biogeography of decapods crustaceans in the Canary Current Large Marine Ecosystem (2016)
    IOC-UNESCO | Paris, France
    Details
    Publication Date: 2021-05-19
    Description: Decapods constitute the dominant benthic group in the Canary Current Large Marine Ecosystem (CCLME). An inventory of the decapod species in this area was made based on the information compiled from surveys and biological collections of the Instituto Español de Oceanografía. A total number of 228 species belonging to 54 families were registered. Brachyura, with 87 different species was the most diversified taxa, followed by Caridea and Anomura with 61 and 33 species, respectively. The high diversity of this group in the CCLME is favoured by the presence of typically temperate species in the North (Morocco-Western Sahara), subtropical-temperate species from Morocco to Mauritania, and typically tropical species in the South (Guinea-Bissau‒Guinea). The diversity in the most temperate and northern zone was higher than in the most tropical and southern zone, with exceptionally high values in Mauritania mainly explained by its special biogeographic and oceanographic conditions. Some decapod species have been exploited by both artisanal and industrial fisheries for decades, providing significant incomes to the coastal states. However, the intense shrimp fishing activities have some negative effects like the overexploitation of certain stocks and the impact on benthic communities by disturbing their physical structures and habitats.
    Description: Published
    Keywords: Decapods diversity ; Biogeography ; Temperate species ; Tropical species ; CCLME ; ASFA15::F::Fisheries
    Repository Name: AquaDocs
    Type: Report Section , Refereed
    Format: pp. 257-271
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