Different trophodynamics between two proximate estuaries with differing degrees of pollution

Author(s):Show less -

Souza, Iara da C. ^[1] ; Arrivabene, Hiulana P. ^[2] ; Azevedo, Vinicius C. ^[3] ; Duarte, Ian D. ^[2] ; Rocha, Livia D. ^[2] ; Matsumoto, Silvia T. ^[2] ; Franco, Anita ; Elliott, Michael ^{[4, 5]} ; Wunderlin, Daniel A. ^{[6, 7]} ; Monferran, V, Magdalena ; Fernandes, Marisa N. ^[1]

Affiliation

^[1] Univ Fed Sao Carlos, Dept Ciencias Fisiol, Rodovia Washington Luiz Km 235, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Espirito Santo, Dept Ciencias Biol, Ave Fernando Ferrari 514, BR-29075910 Vitoria, ES - Brazil

^[3] Simon Fraser Univ, Dept Biol Sci, 8888 Univ Dr, Burnaby, BC V5A 1S6 - Canada

^[4] Univ Hull, Dept Biol & Marine Sci, Kingston Upon Hull HU6 7RX, N Humberside - England

^[5] Int Estuarine & Coastal Specialists Ud, Leven HU17 5LQ - England

^[6] V, Natl Univ Cordoba, ICYTAC Inst Food Sci & Technol Cordoba, CONICET, Univ Campus, RA-5000 Cordoba - Argentina

^[7] V, Natl Univ Cordoba, Dept Organ Chem, Chem Fac, Univ Campus, RA-5000 Cordoba - Argentina

• Document type: Journal article
• Source: Science of The Total Environment; v. 770, MAY 20 2021.
• Web of Science Citations: 0

Abstract

Mangroves are complex ecosystems with widely varying abiotic factors such as salinity, pH, redox potential, sub-stratumparticle size, dissolved organic matter and xenobiotic concentrations, and a high biodiversity. This paper presents the trophodynamic pathways of accumulation and transfer ofmetals and metalloids (B, Al, V, Cr, Mn, Fe, Ni, Cu, Zn, Ag, As, Se, Rb, Sr, Pb and Hg), in three trophic chains (plant-crab-fish, plankton-shrimp-fish and plankton-oyster) of similar food webs, corresponding to two mangrove estuaries (Santa Cruz and Vitoria Bay, separated by 70 km) in the Espirito Santo State (Brazil). Although the trophic transfer patterns are affected by physical variables, metal and metalloids were found in all trophic levels. We observed similar trophodynamics between both estuaries with some elements, but unequal transfer patterns in other cases, thus questioning the effectiveness of N-15 to determine the food chain when the aquatic biota is affected by anthropogenic contaminants. Thus, in the Santa Cruz estuary, most metals were biomagnified through the food web. Conversely, Vitoria Bay presented mostly biodilution, suggesting that metal/metalloid transference patterns in mangrove ecosystems may be affected by different anthropogenic contamination inputs. These results indicate the importance of knowing the complete food web when evaluating the trophic transfer of elements, including an evaluation of the differential impact of pollution on diverse components of the food chain. (C) 2021 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 14/05701-0 - Integrated responses of curimbatá, Prochilodus lineatus (Teleostei) to titanium dioxide (TiO2) nanoparticles and biomarkers identification for environmental monitoring
• Grantee: Marisa Narciso Fernandes
• Support Opportunities: Research Projects - Thematic Grants