Investigating effects of climate-induced changes in water temperature and diet on mercury concentrations in an Arctic freshwater forage fish DOI Creative Commons
Sarah M. Laske, Samantha Burke, Michael P. Carey

и другие.

Environmental Research, Год журнала: 2022, Номер 218, С. 114851 - 114851

Опубликована: Ноя. 19, 2022

The amount of mercury (Hg) in Arctic lake food webs is, and will continue to be, affected by rapid, ongoing climate change. At warmer temperatures, fish require more energy sustain growth; changes their metabolic rates consuming prey with potentially higher Hg concentrations could result increased accumulation. To examine the potential implications warming on forage accumulation lakes, we quantified growth Ninespine Stickleback Pungitius pungitius under different temperature diet scenarios using bioenergetics models. Four were considered that examined role climate, diet, × elevated Hg. As expected, annual but largely dependent. Compared current 0.3 g⋅y-1, at least 200% for energy-dense benthic decreased 40% pelagic prey. baseline levels, burden per kilocalorie declined up 43% consumption - indicating strong somatic dilution no than 4% consumption; led moderate declines benthic-foraging increases pelagic-foraging fish. Bioenergetics models demonstrated complex interaction water temperature, growth, proportions, respond Further work is needed resolve mechanisms linking change availability uptake freshwater systems.

Язык: Английский

Fish muscle mercury concentration and bioaccumulation fluctuate year-round - Insights from cyprinid and percid fishes in a humic boreal lake DOI Creative Commons
Alexander J. Piro, Sami J. Taipale,

Helene M. Laiho

и другие.

Environmental Research, Год журнала: 2023, Номер 231, С. 116187 - 116187

Опубликована: Май 23, 2023

Boreal lakes demonstrate pronounced seasonality, where the warm open-water season and subsequent cold ice-covered dominate natural cycles. While fish muscle total mercury concentration (mg/kg) [THg] is well documented in summer months, there limited knowledge on winter spring dynamics from various foraging thermal guilds. This year-round study tested how seasonality influences its bioaccumulation three percids, perch (Perca fluviatilis), pikeperch (Sander lucioperca), ruffe (Gymnocephalus cernua), cyprinids, roach (Rutilus rutilus), bleak (Alburnus alburnus), bream (Abramis brama) deep boreal mesotrophic Lake Pääjärvi, southern Finland. Fish were sampled was quantified dorsal during four seasons this humic lake. Bioaccumulation regression slopes (mean ± STD, 0.039 0.030, range 0.013-0.114) between length steepest after spawning shallowest autumn for all species. significantly higher winter-spring than summer-autumn however, not cyprinids. The lowest observed autumn, likely due to recovery spawning, somatic growth lipid accumulation. best described by multiple models (R2adj: 52-76%) which included varying combinations of seasonally changing environmental (water temperature, carbon, nitrogen, oxygen saturation) biotic factors (gonadosomatic index, sex) seasonal variation across species suggests a need standardized sampling long-term monitoring avoid any bias. From fisheries consumption perspective lakes, both would improve muscle.

Язык: Английский

Процитировано

6

Little seasonal variation of mercury concentrations and biomagnification in an Arctic pelagic food web DOI Creative Commons

Julia Giebichenstein,

Tom Andersen, Øystein Varpe

и другие.

Progress In Oceanography, Год журнала: 2024, Номер unknown, С. 103381 - 103381

Опубликована: Ноя. 1, 2024

Язык: Английский

Процитировано

2

Feeding and contaminant patterns of sub-arctic and arctic ringed seals: Potential insight into climate change-contaminant interactions DOI

Nadia Facciola,

Magali Houde, Derek C. G. Muir

и другие.

Environmental Pollution, Год журнала: 2022, Номер 313, С. 120108 - 120108

Опубликована: Сен. 6, 2022

Язык: Английский

Процитировано

9

Special issue on the AMAP 2021 assessment of mercury in the Arctic DOI
Runé Dietz,

Simon Wilson,

Lisa L. Loseto

и другие.

The Science of The Total Environment, Год журнала: 2022, Номер 843, С. 157020 - 157020

Опубликована: Июнь 26, 2022

Язык: Английский

Процитировано

8

Investigating effects of climate-induced changes in water temperature and diet on mercury concentrations in an Arctic freshwater forage fish DOI Creative Commons
Sarah M. Laske, Samantha Burke, Michael P. Carey

и другие.

Environmental Research, Год журнала: 2022, Номер 218, С. 114851 - 114851

Опубликована: Ноя. 19, 2022

The amount of mercury (Hg) in Arctic lake food webs is, and will continue to be, affected by rapid, ongoing climate change. At warmer temperatures, fish require more energy sustain growth; changes their metabolic rates consuming prey with potentially higher Hg concentrations could result increased accumulation. To examine the potential implications warming on forage accumulation lakes, we quantified growth Ninespine Stickleback Pungitius pungitius under different temperature diet scenarios using bioenergetics models. Four were considered that examined role climate, diet, × elevated Hg. As expected, annual but largely dependent. Compared current 0.3 g⋅y-1, at least 200% for energy-dense benthic decreased 40% pelagic prey. baseline levels, burden per kilocalorie declined up 43% consumption - indicating strong somatic dilution no than 4% consumption; led moderate declines benthic-foraging increases pelagic-foraging fish. Bioenergetics models demonstrated complex interaction water temperature, growth, proportions, respond Further work is needed resolve mechanisms linking change availability uptake freshwater systems.

Язык: Английский

Процитировано

7