Inter-annual variation of mercury in aquatic bird eggs and fish from a large subarctic lake under a warming climate

Hebert, Craig E.; Chételat, John; Beck, R.W.; Dolgova, Svetlana; Fordy, Kathleen; Kirby, Patrick; Martin, Pamela A.; Rabesca, Moise

doi:10.1016/j.scitotenv.2020.144614

Cited by 4 publications

(3 citation statements)

References 57 publications

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“…Importantly, this link between egg Hg levels and spring freshet has recently been demonstrated in western Canada in gulls and terns (Hebert 2021). We recognize that in this study system a time lag may exist between when inorganic Hg, released from melting ice, is converted into MeHg and is then accumulated in birds and may reflect in inter-annual variation in eider Hg levels (Foster et al 2019).…”

Section: Influence Of Multiple Environmental Stressor Exposure On Lay...supporting

confidence: 54%

Exposure to cumulative stressors affects the laying phenology and incubation behaviour of an Arctic-breeding marine bird

Smith

Albonaimi²,

Hennin³

et al. 2022

Science of The Total Environment

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Section: Influence Of Multiple Environmental Stressor Exposure On Lay...supporting

confidence: 54%

Exposure to cumulative stressors affects the laying phenology and incubation behaviour of an Arctic-breeding marine bird

Smith

Albonaimi²,

Hennin³

et al. 2022

Science of The Total Environment

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“…Some areas of Spain, Portugal, Japan, Germany, and Argentina have reported Hg concentrations above 5 µg g -1 , higher than the world average (0.47 µg g -1 ). Research from the Artic and Canada have found Hg of 4.9 and 1.56 µg g -1 in eggs of L. hyperboreus (Braune et al 2016) and L. argentatus (Hebert et al 2021), respectively. The tissue distribution indicates that Hg bioaccumulates the most in the liver and feathers.…”

Section: The Burden Of Non-essential Trace Elementsmentioning

confidence: 98%

A global-level assessment of gulls (Larus spp.) as bioindicators of trace elements in coastal ecosystems

Bahamonde¹,

Espejo

Celis³

et al. 2023

Lat. Am. J. Aquat. Res.

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Anthropogenic activities and the demand for trace elements have risen, causing an increase in their environmental levels, which could affect biota. High levels of trace elements in living beings have been associated with toxicity, metabolic disorders, oxidative stress, and cancer. Seabirds, such as gulls, have been used as bioindicators of environmental pollution caused by anthropogenic sources. Gulls are widely distributed worldwide, usually occupying high trophic levels, and living close to humans. Among gulls, Larus spp. are omnivorous, predominantly carnivorous, nest on the ground, and capture live food or steal it opportunistically. The present work summarizes the data of trace elements found in eggs, feathers, blood, and feces, among other internal tissues, of several gull species of the genus Larus around the world. Most of the reports are from the Northern Hemisphere (70%), particularly from Europe and North America. The elements Cd, Hg, Mn, Pb, and Se are the most studied (54%), among which Hg represents about 19%. On the other hand, there is no information for lesser-known trace elements such as Rb, Ti, new technology elements (e.g. Ge, Re, Ta), rare earth elements (e.g. Ce, La, Y), or elements of the platinum group (e.g. Os, Ir, Ru). Even though Larus spp. is a suitable bioindicator of chemical contamination in marine ecosystems, only 28 of the 53 species of the Larus genus have been used on trace elements pollution. Future research should address lesser-known elements which are increasingly used by new technologies.

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“…Piscivorous and water-feeding birds and mammals may also indirectly suffer the impacts that re causes on water physicochemical conditions of rivers and lakes. For example, high re-related mercury concentrations have been found in both herring gull eggs (Hebert et al 2021) and semi-aquatic mustelid fur and stomach content (Eccles et al 2020). However, prescribed re enhanced foraging success and prey captures of long-legged wading birds in a grass-dominated wetland by creating burned areas with short-term shallow water habitats (Venne and Frederick 2013).…”

Section: Implications For Biodiversity and Human Needsmentioning

confidence: 99%

Fire and water: global fire impacts on physicochemical properties of freshwater ecosystems

Morales

Paes

Silva

et al. 2022

Preprint

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Freshwater ecosystems are intensely endangered, entailing declines in the biodiversity and ecosystem services. Fire may affect physicochemical water quality parameters of these environments by transference of ash and toxic substances into water bodies, altering nutrient and oxygen concentrations, temperature or turbidity. However, major knowledge gaps in the impacts of fire on freshwater habitats are prevalent. We conducted a global systematic review by searching articles in the Web of Science related to the impacts of fire on the physicochemical water properties of freshwater ecosystems. We estimated ecological and geographic biases, quantified the set of physicochemical parameters investigated, and provided an overview of fire-mediated alterations. We found 54 articles published between 1976 and 2019, with a significant increase during the last decade. Research was strongly biased towards a few western countries, mostly across North America, Europe and Australia. Lotic systems were considerably more studied than lentic systems. Overall, 57 chemical and 17 physical parameters were evaluated, comprising 304 and 77 cases, respectively. Fire altered 68% of the cases studied and this alteration was proportionally similar between chemical (66%) and physical (75%) properties. Nutrient concentration, metal ions, alkalinity, turbidity and temperature were recurrently increased parameters by fire, whereas oxygen mostly decreased. Our study demonstrates that fire commonly affects water quality parameters of freshwater ecosystems. Biases and resulting gaps may steer future sampling efforts and promote a broader understanding of the impacts of fire on these environments. Our results may ultimately guide applicable conservation policies for biodiversity and water management strategies of freshwater habitats.

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Inter-annual variation of mercury in aquatic bird eggs and fish from a large subarctic lake under a warming climate

Cited by 4 publications

References 57 publications

Exposure to cumulative stressors affects the laying phenology and incubation behaviour of an Arctic-breeding marine bird

Exposure to cumulative stressors affects the laying phenology and incubation behaviour of an Arctic-breeding marine bird

A global-level assessment of gulls (Larus spp.) as bioindicators of trace elements in coastal ecosystems

Fire and water: global fire impacts on physicochemical properties of freshwater ecosystems

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