Effects of urban particulate deposition on microbial communities living in bryophytes: an experimental study.
Ecotoxicol Environ Saf
; 73(7): 1776-84, 2010 Oct.
Article
em En
| MEDLINE
| ID: mdl-20674976
ABSTRACT
Our previous in situ study showed that bryophyte-microorganism complexes were affected by particulate atmospheric pollution. Here, the effect of urban particulate wet deposits on microbial communities living in bryophytes was studied under controlled conditions. An urban particulate solution was prepared with particles extracted from analyzer' filters and nebulized on bryophytes in treatments differing in frequency and quantity. The bryophytes did not accumulate metallic trace elements, which were present in very weak concentrations. However, in treated microcosms the total microbial biomass and the biomasses of cyanobacteria, active testate amoebae and fungi significantly decreased in response to the deposition of particles. These results confirm that microbial communities living in terrestrial bryophytes could be more sensitive indicators of atmospheric pollution than bryophytes. Moreover, they suggest that unicellular predators--such as testate amoebae--could be especially useful microbial indicators, since they seem to be both directly and indirectly affected by pollution.
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
2_ODS3
Base de dados:
MEDLINE
Assunto principal:
Monitoramento Ambiental
/
Cidades
/
Cianobactérias
/
Metais Pesados
/
Briófitas
/
Material Particulado
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Fungos
/
Amoeba
País/Região como assunto:
Europa
Idioma:
En
Revista:
Ecotoxicol Environ Saf
Ano de publicação:
2010
Tipo de documento:
Article