title: Decrease in osmotically driven water flux and transport through mangrove roots after oil spills in the presence and absence of dispersants.
abstract: The objective of this study was to evaluate the effect of crude oil on water transport through mangroves roots in the presence and absence of dispersants. Water transport through the roots were evaluated experimentally using red mangrove root segments exposed to salt water contaminated with Louisiana crude oil for seven days in the presence and absence of Corexit 9500A (dispersant). Experimental observations were interpreted in view of the structural integrity and fouling phenomena observed on the epidermis and endodermis layers of the roots. The effects of oil on the radial water flux through the epidermis and endodermis were analyzed using a dual layer filtration model. Progression of fouling due to accumulation and penetration of the contaminants through the root layers were interpreted in relation to observed mangrove health (long and short term effects) reported in the literature.
authors.affiliation: Florida International University, Civil and Environmental Engineering Department, Miami, FL, USA. Electronic address: tanselb@fiu.edu.
authors.forename: Berrin
authors.initials: B
authors.lastname: Tansel
authors.affiliation: Florida International University, Civil and Environmental Engineering Department, Miami, FL, USA.
authors.forename: Ariadna
authors.initials: A
authors.lastname: Arreaza
authors.affiliation: University of Florida, Gainesville, FL, USA.
authors.forename: Derya Z
authors.initials: DZ
authors.lastname: Tansel
authors.affiliation: Tunghai University, Taiwan.
authors.forename: Mengshan
authors.initials: M
authors.lastname: Lee
mesh_terms: D001692:Biological Transport; D008145:Louisiana; D010578:Petroleum; D059392:Petroleum Pollution; D019441:Plant Epidermis / Q000378:metabolism; D018517:Plant Roots / Q000378:metabolism*; D014867:Water; D014874:Water Pollutants, Chemical / Q000493:pharmacokinetics; D053833:Wetlands
chemical_list: D010578:Petroleum; D014874:Water Pollutants, Chemical; D014867:Water
keywords: Coastal pollution; Corexit 9500A; Crude oil; Dispersants; Mangroves; Osmotic pressure