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Trophic magnification rates of eighteen trace elements in freshwater food webs
被引:0
|作者:
Pelletier, Alexander R.
[1
]
Villamarin, Francisco
[2
]
Campos-Silva, João V.
[3
,4
]
Scabin, Andressa B.
[3
]
Doig, Lorne E.
[1
]
Jardine, Timothy D.
[1
,5
]
机构:
[1] Toxicology Centre, University of Saskatchewan, 44 Campus Drive, Saskatoon,SK,S7N 5B3, Canada
[2] Grupo de Biogeografía y Ecología Espacial (BioGeoE2), Universidad Regional Amazónica Ikiam, km7 vía Muyuna, Napo, Tena, Ecuador
[3] Instituto Juruá, Rua Ajuricaba, 359 - Aleixo, Amazonas, Manaus,69083-020, Brazil
[4] Instituto Nacional de Pesquisas da Amazônia (INPA), Av. André Araújo, 2936 - Petrópolis, Amazonas, Manaus,69067-375, Brazil
[5] School of Environment and Sustainability, University of Saskatchewan, 117 Science Place, Saskatoon,SK,S7N 5C8, Canada
关键词:
Invertebrates;
D O I:
10.1016/j.scitotenv.2024.178069
中图分类号:
学科分类号:
摘要:
Trace elements play diverse roles in animal physiology ranging from essential micronutrients to potent toxicants. Despite animals accumulating many trace elements through their diets, relationships between trophic positions and biological concentrations of most trace elements remain poorly described. We report trophic transfer rates of Al, As, Ba, Cd, Co, Cu, Fe, Hg, Mn, Ni, Pb, Se, Sr, Ti, Tl, U, V, and Zn from 31 freshwaters located in distinct biogeographic regions. Elemental concentrations and stable nitrogen isotope ratios (proxies for trophic position) were determined in zooplankton, molluscs, insects, and fishes from all sites. Trophic magnification factors (TMFs) were calculated as the mean fraction of each element that transferred from prey to predators at each site. TMFs >1 indicate biomagnification and TMFs © 2024
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