3 documents found, page 1 of 1
Mercury biomagnification in a Southern Ocean food web
Seco, José; Aparício, Sara; Brierley, Andrew S.; Bustamante, Paco; Ceia, Filipe R.; Coelho, João P.; Philips, Richard A.; Saunders, Ryan A.Biomagnification of mercury (Hg) in the Scotia Sea food web of the Southern Ocean was examined using the stable isotope ratios of nitrogen (d15N) and carbon (d13C) as proxies for trophic level and feeding habitat, respectively. Total Hg and stable isotopes were measured in samples of particulate organic matter (POM), zooplankton, squid, myctophid fish, notothenioid fish and seabird tissues collected in two year...
Mercury levels in Southern Ocean squid: variability over the last decade
Seco, José; Xavier, José C.; Brierley, Andrew S.; Bustamante, Paco; Coelho, João P.; Gregory, Susan; Fielding, Sophie; Pardal, Miguel A.The concentrations of total and proportions of organic mercury were measured in tissues of 355 individuals of 8 species of Southern Ocean squid (Alluroteuthis antarcticus, Bathyteuthis abyssicola, Filippovia knipovitchi, Galiteuthis glacialis, Gonatus antarcticus, Kondakovia longimana, Psychroteuthis glacialis and Slosarczykovia circumantarctica). Squid were caught around South Georgia (Scotia Sea) during 5 cru...
Show your beaks and we tell you what you eat: different ecology in sympatric An...
Matias, Ricardo S.; Gregory, Susan; Ceia, Filipe R.; Baeta, Alexandra; Seco, José; Rocha, Miguel S.; Fernandes, Emanuel M.; Reis, Rui L.Sympatry can lead to higher competition under climate change and other environmental pressures, including in South Georgia, Antarctica, where the two most common octopod species, Adelieledone polymorpha and Pareledone turqueti, occur side by side. Since cephalopods are typically elusive animals, the ecology of both species is poorly known. As beaks of cephalopods are recurrently found in top predator's stomachs...