PERSONAL DE APOYO
SERRA Analia Veronica
artículos
Título:
Short-term efficiency of epibenthic microbial mat components on phosphorus sorption
Autor/es:
PERILLO, VANESA LILIANA; PAN, JERÓNIMO; LA COLLA, NOELIA SOLEDAD; SERRA, ANALÍA VERÓNICA; BOTTÉ, SANDRA ELIZABETH; CUADRADO, DIANA GRACIELA
Revista:
MARINE POLLUTION BULLETIN
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2020 vol. 157
ISSN:
0025-326X
Resumen:
Microbial mats may be an alternative tool for phosphorus (P) remediation of eutrophic coastal waters. The main objective of this work was to determine the importance that the living and non-living components of the mats have on P short-term sorption. Microbial mats were collected in the Paso Seco coastal flat, Argentina (40°38′3.32′′S; 62°12′24.85′′W), and incubated under controlled conditions in the lab. An adsorption curve was performed with the microbial mats. Active mats had a Freundlich constant 8.9-fold higher than underlying sandy sediments. Collected samples were then treated as follows: maintaining and disturbing their structural integrity (natural and autoclaved, respectively), and both conditions were incubated with filtered seawater, without and with phosphate addition (0 and 5 mg P L−1, respectively). Natural mats had a significantly-higher phosphate removal percentage than autoclaved ones, suggesting that living microorganisms increase P short-term sorption efficiency by ~25%, while non-living matter may account for the rest.