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title Mercury accumulation in gentoo penguins Pygoscelis papua: spatial, temporal and sexual intraspecific variations
authors Pedro, S; Xavier, JC; Tavares, S; Trathan, PN; Ratcliffe, N; Paiva, VH; Medeiros, R; Vieira, RP; Ceia, FR; Pereira, E; Pardal, MA
author full name Pedro, Sara; Xavier, Jose C.; Tavares, Silvia; Trathan, Phil N.; Ratcliffe, Norman; Paiva, Vitor H.; Medeiros, Renata; Vieira, Rui P.; Ceia, Filipe R.; Pereira, Eduarda; Pardal, Miguel A.
title Mercury accumulation in gentoo penguins Pygoscelis papua: spatial, temporal and sexual intraspecific variations
nationality internacional
source POLAR BIOLOGY
language English
document type Article
author keywords Mercury; Trophic level; Stable isotopes; Antarctica
keywords plus SOUTHERN-OCEAN; MARINE-ENVIRONMENT; KERGUELEN ISLANDS; TROPHIC POSITION; STABLE-ISOTOPES; TRACE-ELEMENTS; INDIAN-OCEAN; EXPOSURE; SEABIRDS; DIET
abstract Mercury emissions have increased over the past decades affecting even remote areas such as Antarctica. As gentoo penguins (Pygoscelis papua) breed on many of the islands surrounding Antarctica, foraging close to their colonies, their mercury load should reflect concentrations in the region. We therefore evaluated mercury concentrations in adult gentoo penguin feathers at Bird Island, South Georgia. We found no significant differences in mercury levels between 2009 and 2010 (mean +/- SD 0.97 +/- 0.67 mg kg(-1), mean +/- SD 1.13 +/- 0.62 mg kg(-1), respectively). Stable nitrogen isotope values in feathers indicated that feeding habits had a stronger influence on male mercury concentrations, whereas stable carbon isotope values indicated that foraging habitat had a stronger influence on females. Though no temporal variation in levels of mercury in gentoo penguin feathers was observed, spatial differences were evident when compared with previous studies. Our results could have implications for other animals higher in the food web that prey upon gentoo penguins, with potential consequential effects on their reproduction and development.
author address [Pedro, Sara; Tavares, Silvia; Pardal, Miguel A.] Univ Coimbra, Ctr Funct Ecol, Dept Life Sci, P-3000456 Coimbra, Portugal; [Xavier, Jose C.; Paiva, Vitor H.; Vieira, Rui P.; Ceia, Filipe R.] Univ Coimbra, Marine & Environm Sci Ctr MARE, Dept Life Sci, P-3000456 Coimbra, Portugal; [Xavier, Jose C.; Trathan, Phil N.; Ratcliffe, Norman] British Antarctic Survey, NERC, Cambridge CB3 0ET, England; [Medeiros, Renata] Cardiff Univ, Cardiff Sch Biosci, South Glamorgan, Wales; [Pereira, Eduarda] Univ Aveiro, Ctr Environm & Marine Studies CESAM, P-3810193 Aveiro, Portugal; [Vieira, Rui P.] Univ Aveiro, Dept Biol, P-3810193 Aveiro, Portugal; [Vieira, Rui P.] Natl Oceanog Ctr, Ocean & Earth Sci, Southampton SO14 3ZH, Hants, England
reprint address Pedro, S (reprint author), Univ Coimbra, Ctr Funct Ecol, Dept Life Sci, Calcada Martim de Freitas, P-3000456 Coimbra, Portugal.
e-mail address sara.pedro@student.uc.pt
funding agency and grant number Foundation for Science and Technology (FCT; Portugal) under project POLAR, within Portuguese Polar Program PROPOLAR; international programs ICED (Integrating climate and ecosystem dynamics of the Southern Ocean); SCAR-AnT-ERA (Antarctic Thresholds, ecosystem resilience and adaptation of the Scientific committee for Antarctic Research); SCAR EGBAMM (expert group on Birds and Antarctic marine mammals of SCAR); [SFRH/BPD/95372/2013]
funding text This work contributes to the BAS Ecosystems programme. The work was sponsored by the Foundation for Science and Technology (FCT; Portugal) under the project POLAR, within the Portuguese Polar Program PROPOLAR, and a postdoctoral grant to Filipe R. Ceia (SFRH/BPD/95372/2013), and part of the international programs ICED (Integrating climate and ecosystem dynamics of the Southern Ocean) and SCAR-AnT-ERA (Antarctic Thresholds, ecosystem resilience and adaptation of the Scientific committee for Antarctic Research) and of the SCAR EGBAMM (expert group on Birds and Antarctic marine mammals of SCAR).
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publisher SPRINGER
publisher city NEW YORK
publisher address 233 SPRING ST, NEW YORK, NY 10013 USA
issn 0722-4060
29-character source abbreviation POLAR BIOL
iso source abbreviation Polar Biol.
publication date SEP
year published 2015
volume 38
issue 9
beginning page 1335
ending page 1343
digital object identifier (doi) 10.1007/s00300-015-1697-9
page count 9
web of science category Biodiversity Conservation; Ecology
subject category Biodiversity & Conservation; Environmental Sciences & Ecology
document delivery number CO5GY
unique article identifier WOS:000359188800002
link 10.1007/s00300-015-1697-9