Factors influencing mercury levels in Leach's storm-petrels at northwest Atlantic colonies

Pollet, Ingrid L.; McFarlane-Tranquilla, Laura; Burgess, Neil M.; Diamond, Antony W.; Gjerdrum, Carina; Hedd, April; Hoeg, Rielle; Jones, Patricia L.; Mauck, Robert A.; Montevecchi, William A.; Pratte, Isabeau; Ronconi, Robert A.; Shutler, Dave; Wilhelm, Sabina I.

doi:10.1016/j.scitotenv.2022.160464

Cited by 7 publications

(4 citation statements)

References 101 publications

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“…Taken together, our SIAs suggest that cormorants breeding on Mandarte and Mitlenatch Islands are feeding on a combination of midwater prey and increasingly more benthic prey, possibly due to declines in forage fish (e.g., herring) abundance . Auklets from our monitoring colonies appear to be feeding on an exclusive diet of fish (e.g., sandlance) and/or higher trophic level zooplankton. , The latitudinal gradient in δ 15 N for storm-petrel eggs suggests a diverse diet of crustaceans/euphausiids, myctophid fish, and other omega-3 rich prey, and perhaps, much more spatial heterogeneity in baseline δ 15 N caused by denitrification and advection of eastern Tropical Pacific water masses. , …”

Section: Resultsmentioning

confidence: 65%

Section: Resultsmentioning

confidence: 99%

“…56 Auklets from our monitoring colonies appear to be feeding on an exclusive diet of fish (e.g., sandlance) and/or higher trophic level zooplankton. 57,62 The latitudinal gradient in δ 15 petrel eggs suggests a diverse diet of crustaceans/euphausiids, 68 myctophid fish, 65 and other omega-3 rich prey, 69 and perhaps, much more spatial heterogeneity in baseline δ 15 N caused by denitrification and advection of eastern Tropical Pacific water masses. 70,71 Values for δ 15 N across species were nonlinearly correlated with lnΣ 17 PFASs (t 158 = −5.08; p < 0.001), long-chain ΣPFASs (t 158 = −5.14; p < 0.001), Σ 4 PFSAs (t 156 = −2.88; p < 0.01), Σ 13 PFCAs (t 157 = −5.73; p < 0.001), and PFOS (t 156 = −3.06; p < 0.01), but not short-chain ΣPFASs (t 101 = −0.51; p = 0.61).…”

Section: Environmentalmentioning

confidence: 99%

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Perfluoroalkyl Substances in Seabird Eggs from Canada’s Pacific Coast: Temporal Trends (1973–2019) and Interspecific Patterns

Kesic

Elliott

et al. 2023

Environ. Sci. Technol.

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Whether perfluoroalkyl sulfonates (PFSAs) and perfluoroalkyl carboxylates (PFCAs) are responding to legislative restrictions and showing decreasing trends in top marine predators that range across the eastern North Pacific Ocean is unclear. Here, we examined longer-term temporal trends (1973−2019) of 4 PFSAs and 13 PFCAs, as well stable isotopes of δ 13 C and δ 15 N, in the eggs of 4 seabird species sampled along a nearshore-offshore gradient; double-crested cormorants (Nannopterum auritum), pelagic cormorants (Urile pelagicus), rhinoceros auklets (Cerorhinca monocerata), and Leach's storm-petrels (Hydrobates leucorhous) from the Pacific coast of British Columbia, Canada. PFOS was the most abundant PFSA (79−94%) detected in all eggs regardless of colony and year, with the highest concentrations, on average, measured in auklet eggs (mean = 58 ng g −1 , range = 11−286 ng g −1 ww). Perfluoroundecanoic acid (PFUdA) and perfluorotridecanoic acid (PFTriDA) were the dominant long-chain PFCAs (≥30% combined). The majority of PFSAs (including PFOS) are statistically declining (p < 0.001) in the eggs of all 4 species with PFOS half-lives ranging from 2.6 to 7.8 years. Concentrations of long-chain PFCAs exhibited a trajectory comprised of linear increases and second-order declines, suggesting that the rate of uptake of PFCAs is slowing or leveling off. These trends are consistent with the voluntarily ceased production of PFSAs by 3M circa 2000−2003 and are among the first from the northeast Pacific to indicate a positive response to several regulations and restrictions on PFCAs from facility emissions and product content.

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Section: Resultsmentioning

confidence: 65%

Section: Resultsmentioning

confidence: 99%

Section: Environmentalmentioning

confidence: 99%

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Perfluoroalkyl Substances in Seabird Eggs from Canada’s Pacific Coast: Temporal Trends (1973–2019) and Interspecific Patterns

Kesic

Elliott

et al. 2023

Environ. Sci. Technol.

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“…Because seabirds use a wide range of habitats, from the coastal margins to the open ocean, species or individuals with differing foraging behaviors can reflect Hg contamination from different parts of the ecosystems both horizontally (e.g., coastal and oceanic food webs) and vertically (i.e., benthic, epipelagic, and mesopelagic food webs). Therefore, the study of a group of seabirds with contrasting ecology from the same region allows determination of MeHg availability for multiple marine zones and thus provides a more holistic view (Ochoa-Acuña et al 2002 ; Bond and Diamond 2009 ; Stenhouse et al 2018 ; Pollet et al 2023 ). For example, crustacean-feeding seabirds have lower Hg exposure than cephalopod- and fish-feeders (Carravieri et al 2014 ) and epipelagic seabirds have lower Hg exposure than those relying on mesopelagic prey (Ochoa-Acuña et al 2002 ; Furtado et al 2021 ).…”

Section: Resultsmentioning

confidence: 99%

Global mercury concentrations in biota: their use as a basis for a global biomonitoring framework

Evers,

Ackerman,

Åkerblom

et al. 2024

Ecotoxicology

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An important provision of the Minamata Convention on Mercury is to monitor and evaluate the effectiveness of the adopted measures and its implementation. Here, we describe for the first time currently available biotic mercury (Hg) data on a global scale to improve the understanding of global efforts to reduce the impact of Hg pollution on people and the environment. Data from the peer-reviewed literature were compiled in the Global Biotic Mercury Synthesis (GBMS) database (>550,000 data points). These data provide a foundation for establishing a biomonitoring framework needed to track Hg concentrations in biota globally. We describe Hg exposure in the taxa identified by the Minamata Convention: fish, sea turtles, birds, and marine mammals. Based on the GBMS database, Hg concentrations are presented at relevant geographic scales for continents and oceanic basins. We identify some effective regional templates for monitoring methylmercury (MeHg) availability in the environment, but overall illustrate that there is a general lack of regional biomonitoring initiatives around the world, especially in Africa, Australia, Indo-Pacific, Middle East, and South Atlantic and Pacific Oceans. Temporal trend data for Hg in biota are generally limited. Ecologically sensitive sites (where biota have above average MeHg tissue concentrations) have been identified throughout the world. Efforts to model and quantify ecosystem sensitivity locally, regionally, and globally could help establish effective and efficient biomonitoring programs. We present a framework for a global Hg biomonitoring network that includes a three-step continental and oceanic approach to integrate existing biomonitoring efforts and prioritize filling regional data gaps linked with key Hg sources. We describe a standardized approach that builds on an evidence-based evaluation to assess the Minamata Convention’s progress to reduce the impact of global Hg pollution on people and the environment.

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Inter-colony variation in predation, mercury burden and adult survival in a declining seabird

Calvert,

Gutowsky,

Fifield

et al. 2024

Science of The Total Environment

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Factors influencing mercury levels in Leach's storm-petrels at northwest Atlantic colonies

Cited by 7 publications

References 101 publications

Perfluoroalkyl Substances in Seabird Eggs from Canada’s Pacific Coast: Temporal Trends (1973–2019) and Interspecific Patterns

Perfluoroalkyl Substances in Seabird Eggs from Canada’s Pacific Coast: Temporal Trends (1973–2019) and Interspecific Patterns

Global mercury concentrations in biota: their use as a basis for a global biomonitoring framework

Inter-colony variation in predation, mercury burden and adult survival in a declining seabird

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