@InProceedings{Vianna:1995:PrInOs,
               author = "Vianna, Marcio Luiz",
                title = "Fisheries applications of the Toca monitoring program in the 
                         Atlantic and Indian Oceans: predictability of interannual 
                         oscillations in spiny lobster catches drives by ocean climatic 
                         changes",
                 year = "1995",
                pages = "830--834",
         organization = "International Scientific Conference on Tropical Ocean Global 
                         Atmosphere.",
             keywords = "OCEANOGRAFIA, ECOSSISTEMAS, PESCA, ECOLOGIA COSTEIRA, BIOLOGIA 
                         MARINHA, MUNDANCAS CLIMATICAS, OCEANOGRAPHY, MARINE ENVIRONMENTS, 
                         ECOSYSTEMS, COASTAL ECOLOGY, MARINE BIOLOGY, CLIMATE CHANGE.",
             abstract = "The spiny lobster fisheries in West Australia and Northeast Brazil 
                         are of great socio-economic importance, involving 100 million 
                         dollar annual exports, being the most important export items from 
                         these regions. The ocurrence of high amplitude fluctuations in the 
                         annual production has been arbitrarily attributed to overfishing 
                         and predatory practices, in the case of declining catches, and to 
                         {"}effective{"} management practices, in the case of increases in 
                         catch. In the Brazilian case, this state of affairs has been 
                         causing a dominance of repressive management practices and 
                         increased loss of credibility of fisheries authorities. The recent 
                         finding by Pearce and Phillips (1988)that oscillations in catches 
                         off Western Australia are caused by ocean environmental 
                         fluctuations about four years earlier, and not by variations in 
                         fishing effort, are largely due to the availability of the good 
                         monthly sea-level data sets in Australia. The same kind of 
                         conclusion was reached by Polovina and MitchuM (1992)in relation 
                         to the Hawaiian spiny lobster fishery, and Vianna and Peris 
                         (1995)and in relation to the Northeast Brazilian spiny lobster 
                         fishery.In the Brazilian case, a very striking independence of the 
                         yearly catch on a wide interval of levels of fishing effort defied 
                         explanation, indicating that a possible cause for such a stability 
                         could necessarily be related to the existence of return paths for 
                         the pelagic larvae, which would not be lost through the most 
                         obvious cross-equatorial drift path via the North Brazil Current 
                         (NBC), as some general pictures of the circulation in the South 
                         Atlantic would suggest (Pollock, 1990). We proposed (Vianna and 
                         Peris,1995)that this requires a drift cycle which necessarily uses 
                         the North Brazil upstream retroflection into the South Equatorial 
                         Undercurrent (SEUC)off Fortaleza, and a return path using the 
                         central branch of the South Equatorial Current (SEC)which impinges 
                         the coast of Brazil around 6S. This picture is consistent with the 
                         findings of Molinari (see Molinari, 1982, and references 
                         therein)and the modeling study of Schott and Boning (1991). This 
                         is the only possibility consistent with other biological 
                         indicators, as the presence of the two commercial species 
                         (Panulirus . argus and Panulirus laevicauda)in Femando de Noronha, 
                         and their absence at St.Peter and St.Paul's Rocks 
                         (Vianna,1986)which would indicate the NBC retroflection into the 
                         North Equatorial Countercurrent as the preferred path. The SEC 
                         hypothesis is supported by the existence of a permanent coastal 
                         divergence region just south of Natal, which causes the presence 
                         of tuna and deep water lobsters at anomalously shallow depths, and 
                         the existence of nursery grounds around Natal and Recife.",
  conference-location = "Melbourne, AU",
      conference-year = "1995",
                label = "8978",
           targetfile = "INPE 8156.pdf",
        urlaccessdate = "21 maio 2024"
}