TY - JOUR
T1 - The trophodynamics of polycyclic aromatic hydrocarbons in marine food webs
T2 - The importance of trophic level span from insights into Liaodong Bay (China)
AU - Wu, Jinhao
AU - Zhang, Yufeng
AU - Zhang, Peng
AU - Sanganyado, Edmond
AU - Wang, Zhaohui
AU - Ma, Shuhui
AU - Tian, Jiashen
AU - Zhang, Yimin
PY - 2024/10/20
Y1 - 2024/10/20
N2 - The occurrence and trophic transfer of polycyclic aromatic hydrocarbons (PAHs) in aquatic ecosystems is vital to assess ecological risks. PAHs concentrations were analyzed in seawater, sediment, plankton, and marine species (15 fish species, 8 invertebrate species, 3 marine mammals), collected from Liaodong Bay (China). Bioaccumulation and biomagnification were calculated to demonstrate the biotransfer pattern of PAHs from the environmental matrix to high-level predators through the food web. Total PAHs concentrations ranged from 81.2 to 197.6 ng/L in seawater, 51.4–304.8 ng/g (dw) in sediment, and 65.3 to 28,885 ng/g (lw) in all biota samples. Three- and four-ring PAHs constituted major components (>81% in each case) of PAH congener profiles. Lower biota-sediment accumulation factors (BSAFs) and bioaccumulation factors (BAFs) values indicated limited bioaccumulation of PAHs within marine organisms. Also, 77% of biomagnification factors (BMFTL) values of PAHs in spotted seal and finless porpoise were >1, whereas opposite transfer patterns of PAHs were observed in food webs with trophic values of 1.5–3.5 and 3.0–4.0; that is, trophic dilution (trophic magnification factor (TMF) < 1) and trophic magnification (TMF >1), respectively. This study provides novel insights into the importance of TL span for trophodynamics of PAHs within food webs.
AB - The occurrence and trophic transfer of polycyclic aromatic hydrocarbons (PAHs) in aquatic ecosystems is vital to assess ecological risks. PAHs concentrations were analyzed in seawater, sediment, plankton, and marine species (15 fish species, 8 invertebrate species, 3 marine mammals), collected from Liaodong Bay (China). Bioaccumulation and biomagnification were calculated to demonstrate the biotransfer pattern of PAHs from the environmental matrix to high-level predators through the food web. Total PAHs concentrations ranged from 81.2 to 197.6 ng/L in seawater, 51.4–304.8 ng/g (dw) in sediment, and 65.3 to 28,885 ng/g (lw) in all biota samples. Three- and four-ring PAHs constituted major components (>81% in each case) of PAH congener profiles. Lower biota-sediment accumulation factors (BSAFs) and bioaccumulation factors (BAFs) values indicated limited bioaccumulation of PAHs within marine organisms. Also, 77% of biomagnification factors (BMFTL) values of PAHs in spotted seal and finless porpoise were >1, whereas opposite transfer patterns of PAHs were observed in food webs with trophic values of 1.5–3.5 and 3.0–4.0; that is, trophic dilution (trophic magnification factor (TMF) < 1) and trophic magnification (TMF >1), respectively. This study provides novel insights into the importance of TL span for trophodynamics of PAHs within food webs.
KW - Bioaccumulation
KW - Liaodong bay
KW - Marine mammals
KW - Polycyclic aromatic hydrocarbons
KW - Trophic transfer
UR - http://www.scopus.com/inward/record.url?scp=85206687006&partnerID=8YFLogxK
U2 - 10.1016/j.envres.2024.120202
DO - 10.1016/j.envres.2024.120202
M3 - Article
AN - SCOPUS:85206687006
SN - 0013-9351
VL - 263
SP - 1
EP - 9
JO - Environmental Research
JF - Environmental Research
M1 - 120202
ER -