Please use this identifier to cite or link to this item:
Title: Impact of sampling depth and plant species on local environmental conditions, microbiological parameters and bacterial composition in a mercury contaminated salt marsh
Author: Cleary, D. F. R.
Oliveira, V.
Gomes, N. C. M.
Pereira, A.
Henriques, I.
Marques, B.
Almeida, A.
Cunha, A.
Correia, A.
Lillebo, A. I.
Keywords: Hg
Juncus maritimus
Ria de Aveiro
Bolboschoenus maritimus
Issue Date: 2012
Publisher: Elsevier
Abstract: We compare the environmental characteristics and bacterial communities associated with two rushes, Juncus maritimus and Bolboschoenus maritimus , and adjacent unvegetated habitat in a salt marsh subjected to historical mercury pollution. Mercury content was higher in vegetated than unvegetated habitat and increased with sampling depth. There was also a significant relationship between mercury concentration and bacterial composition. Habitat (Juncus, Bolboschoenus or unvegetated), sample depth, and the interaction between both, however, explained most of the variation in composition (~70%). Variation in composition with depth was most prominent for the unvegetated habitat, followed by Juncus , but more constrained for Bolboschoenus habitat. This constraint may be indicative of a strong plant–microbe eco- physiological adaptation. Vegetated habitat contained distinct bacterial communities associated with higher potential activity of aminopeptidase, b -glucosidase and arylsulphatase and incorporation rates of 14C-glucose and 14C-acetate. Communities in unvegetated habitat were, in contrast, associated with both higher pH and proportion of sulphate reducing bacteria.
Peer review: yes
DOI: 10.1016/j.marpolbul.2011.11.020
ISSN: 0025-326X
Appears in Collections:CESAM - Artigos
DBio - Artigos
Ria de Aveiro - Artigos

Files in This Item:
File Description SizeFormat 
30_Impact of sampling depth and plant species.pdf624.7 kBAdobe PDFrestrictedAccess

Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.