Dynamics of production and mortality of Aurelia SP. in thau lagoon, northwerstern Mediterranean

Dissertação de mestrado, Biologia Marinha, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2015

El prometido de Aurelia : narraciones humorísticas

UANL

Large-scale sampling reveals the spatio-temporal distributions of the jellyfish Aurelia aurita and Cyanea capillata in the Irish Sea

At-sea distributions of large scyphozoan jellyfish across the Irish Sea were studied using visual surface counts from ships of opportunity. Thirty-seven surveys were conducted along two >100 km long transects between Ireland and the UK from April to September in 2009 and 2010. Five species were recorded but only Aurelia aurita and Cyanea capillata were frequently observed. The first formal description of the seasonal changes in the abundances and distributions of these two species in the study area is provided. The highest densities of these species were more likely to be found ~30 km offshore, but large aggregations were present both in coastal and offshore waters. Evidence for aggregations of medusae along physical discontinuities was provided by coupling jellyfish observations with simultaneous records of environmental parameters. The value of surveys from ships of opportunity as cost-effective semi-quantitative tools, to develop local knowledge on jellyfish abundance, distribution, and phenology is discussed.

(Table 2) Biomass and size characteristics of Aurelia aurita in the Black Sea as determined from the Argus manned submersible

Based on estimate of Aurelia aurita concentration in the Black Sea from the Argus manned submersible in April-May 1984, as well as on author's data and published information on metabolic rate and feeding of medusa, biomass of medusa Aurelia aurita in the epipelagic zone of the Black Sea is estimated to be about 400 million tons of wet weight, and its mean annual production to be 400-900 million tons wet weight or about 1.1-2.5 million tons of organic carbon, equivalent to approximately 1-3% of primary production.

María Cristina Di Gregori, María Aurelia Di Berardino (compiladoras), Conocimiento, realidad y relativismo

Fil: Sánchez García, Victoria. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

María Cristina Di Gregori, María Aurelia Di Berardino (compiladoras), Conocimiento, realidad y relativismo

Fil: Sánchez García, Victoria. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

María Cristina Di Gregori, María Aurelia Di Berardino (compiladoras), Conocimiento, realidad y relativismo

Fil: Sánchez, Victoria. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.