Biological Oceanography Research Trends by Lea P. Mertens

By Lea P. Mertens

Organic oceanography matters the biology and ecology of oceanic, marine, coastal and estuarine organisms. those variety from viruses and micro organism to microbes and phytoplankton, from zooplankton and benthic invertebrates to shellfish, fish and marine mammals. The organisms dwell in a dynamic fluid simply defined as a chemical soup that covers seventy one percentage of the earth's floor and is in detail coupled to the ambience, the seafloor and the land. therefore, to figure out how organisms are encouraged by means of their setting, organic oceanographers needs to functionality throughout many sub-disciplines reminiscent of biochemistry, genetics, body structure, behaviour, inhabitants dynamics and neighborhood ecology. they have to be a professional of ocean physics, chemistry, geology, and atmospheric and radioactive methods. This booklet offers the newest study during this box from all over the world.

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Coryphaena hippurus, Seriola dumerilii, Trachurus spp. Epinephelus marginatus, Sciaena umbra, Diplodus sargus, Octopus vulgaris. All the species shown are fishes, with the only exception of the cephalopod Octopus vulgaris. Research, Assessment and Management The MED has long tradition in fisheries oceanography investigations. Many travellers, humanists, historians, geographers, naturalists and biologists have described the marine living resources and the fishing exploitation in this “sea between the lands”.

Both spawning stock and abundance of red shrimp seem to be also enhanced by high MO index periods, which could reflect the increased presence of the saline and warm LIW in the study area, extending over the fishing grounds of this species. Fluctuations of landings and environemental conditions in the WMED were also analysed by Lloret et al. (2001), which found that monthly catches and CPUE of some commercial species were significantly possitively correlated with run-off of local rivers and the wind mixing index during the spawning season, with time lags of less than a year.

2000; Massutí and Moranta, 2003). g. , 2004). The management of the MED fisheries is based on effort control, no Total Allowable Catches (TACs) are implemented, except for the bluefin tuna and the swordfish. This kind of management can also be on the basis of the above mentioned general lack of data in the MED. Other technical measures, such as minimum landing sizes and minimum mesh sizes, are also implemented but not always enforced, and in all cases these measures are lower than in the Atlantic.

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