A comparison of mercury biomagnification through lacustrine food webs supporting Brook Trout (Salvelinus fontinalis) and other salmonid fishes
Methyl mercury (MeHg) bioaccumulation in lower-trophic-level organisms and its subsequent biomagnification through food webs differs in magnitude among lakes and results in intraspecific variability of MeHg in top predator fishes. Understanding these differences is critical given the reproductive an...
Published in: | Frontiers in Environmental Science |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Frontiers Media S.A.
2016
|
Subjects: | |
Online Access: | https://doi.org/10.3389/fenvs.2016.00023 https://doaj.org/article/a975e75aaf4e4009850b857a3a1b72db |
id |
fttriple:oai:gotriple.eu:oai:doaj.org/article:a975e75aaf4e4009850b857a3a1b72db |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:oai:doaj.org/article:a975e75aaf4e4009850b857a3a1b72db 2023-05-15T15:07:30+02:00 A comparison of mercury biomagnification through lacustrine food webs supporting Brook Trout (Salvelinus fontinalis) and other salmonid fishes Monica LD Finley Karen A Kidd R Allen Curry Gretchen L Lescord Meredith G Clayden Nelson J O'Driscoll 2016-04-01 https://doi.org/10.3389/fenvs.2016.00023 https://doaj.org/article/a975e75aaf4e4009850b857a3a1b72db en eng Frontiers Media S.A. 2296-665X doi:10.3389/fenvs.2016.00023 https://doaj.org/article/a975e75aaf4e4009850b857a3a1b72db undefined Frontiers in Environmental Science, Vol 4 (2016) Mercury Stable isotopes food webs brook trout trophic magnification slope envir archeo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.3389/fenvs.2016.00023 2023-01-22T18:11:39Z Methyl mercury (MeHg) bioaccumulation in lower-trophic-level organisms and its subsequent biomagnification through food webs differs in magnitude among lakes and results in intraspecific variability of MeHg in top predator fishes. Understanding these differences is critical given the reproductive and neurotoxic effects of MeHg on fishes and their predators, including humans. In this study we characterized the food webs of five lakes in New Brunswick, Canada, supporting Brook Trout (Salvelinus fontinalis) using measures of relative trophic position (δ15N) and carbon sources (δ13C), determined the concentrations of MeHg in invertebrates and total Hg (THg) in fishes, and quantified MeHg biomagnification from primary to tertiary consumers. Methyl Hg and THg concentrations were highest in biota from lakes with lower pH. The trophic magnification slopes (TMS; log Hg versus δ15N) varied significantly among lakes (0.12-0.20; ANCOVA, p=0.031). When combined with data from other salmonid lakes in temperate and Arctic Canada (n=36), among-system variability in TMS was best, but weakly, positively predicted by aqueous total phosphorous (p = 0.028, R2adj = 0.109). These results suggest that lake productivity directly or indirectly influences the biomagnification of MeHg through diverse food webs supporting salmonids. Article in Journal/Newspaper Arctic Unknown Arctic Canada Frontiers in Environmental Science 4 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Mercury Stable isotopes food webs brook trout trophic magnification slope envir archeo |
spellingShingle |
Mercury Stable isotopes food webs brook trout trophic magnification slope envir archeo Monica LD Finley Karen A Kidd R Allen Curry Gretchen L Lescord Meredith G Clayden Nelson J O'Driscoll A comparison of mercury biomagnification through lacustrine food webs supporting Brook Trout (Salvelinus fontinalis) and other salmonid fishes |
topic_facet |
Mercury Stable isotopes food webs brook trout trophic magnification slope envir archeo |
description |
Methyl mercury (MeHg) bioaccumulation in lower-trophic-level organisms and its subsequent biomagnification through food webs differs in magnitude among lakes and results in intraspecific variability of MeHg in top predator fishes. Understanding these differences is critical given the reproductive and neurotoxic effects of MeHg on fishes and their predators, including humans. In this study we characterized the food webs of five lakes in New Brunswick, Canada, supporting Brook Trout (Salvelinus fontinalis) using measures of relative trophic position (δ15N) and carbon sources (δ13C), determined the concentrations of MeHg in invertebrates and total Hg (THg) in fishes, and quantified MeHg biomagnification from primary to tertiary consumers. Methyl Hg and THg concentrations were highest in biota from lakes with lower pH. The trophic magnification slopes (TMS; log Hg versus δ15N) varied significantly among lakes (0.12-0.20; ANCOVA, p=0.031). When combined with data from other salmonid lakes in temperate and Arctic Canada (n=36), among-system variability in TMS was best, but weakly, positively predicted by aqueous total phosphorous (p = 0.028, R2adj = 0.109). These results suggest that lake productivity directly or indirectly influences the biomagnification of MeHg through diverse food webs supporting salmonids. |
format |
Article in Journal/Newspaper |
author |
Monica LD Finley Karen A Kidd R Allen Curry Gretchen L Lescord Meredith G Clayden Nelson J O'Driscoll |
author_facet |
Monica LD Finley Karen A Kidd R Allen Curry Gretchen L Lescord Meredith G Clayden Nelson J O'Driscoll |
author_sort |
Monica LD Finley |
title |
A comparison of mercury biomagnification through lacustrine food webs supporting Brook Trout (Salvelinus fontinalis) and other salmonid fishes |
title_short |
A comparison of mercury biomagnification through lacustrine food webs supporting Brook Trout (Salvelinus fontinalis) and other salmonid fishes |
title_full |
A comparison of mercury biomagnification through lacustrine food webs supporting Brook Trout (Salvelinus fontinalis) and other salmonid fishes |
title_fullStr |
A comparison of mercury biomagnification through lacustrine food webs supporting Brook Trout (Salvelinus fontinalis) and other salmonid fishes |
title_full_unstemmed |
A comparison of mercury biomagnification through lacustrine food webs supporting Brook Trout (Salvelinus fontinalis) and other salmonid fishes |
title_sort |
comparison of mercury biomagnification through lacustrine food webs supporting brook trout (salvelinus fontinalis) and other salmonid fishes |
publisher |
Frontiers Media S.A. |
publishDate |
2016 |
url |
https://doi.org/10.3389/fenvs.2016.00023 https://doaj.org/article/a975e75aaf4e4009850b857a3a1b72db |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Frontiers in Environmental Science, Vol 4 (2016) |
op_relation |
2296-665X doi:10.3389/fenvs.2016.00023 https://doaj.org/article/a975e75aaf4e4009850b857a3a1b72db |
op_rights |
undefined |
op_doi |
https://doi.org/10.3389/fenvs.2016.00023 |
container_title |
Frontiers in Environmental Science |
container_volume |
4 |
_version_ |
1766338989152796672 |