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The study of bacterioplankton dynamics in the Berlengas Archipelago (West coast of Portugal) using the HJ-biplot method
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Orientador(es)
Resumo(s)
The relationship between bacterioplankton and environmental forcing in the
Berlengas Archipelago (Western Coast of Portugal) were studied between
February 2006 and February 2007 in two sampling stations: Berlenga and Canal,
using an HJ-biplot. The HJ-biplot showed a simultaneous display of the three
main metabolic groups of bacteria involved in carbon cycling (aerobic
heterotrophic bacteria, sulphate-reducing bacteria and nitrate-reducing bacteria)
and environmental parameters, in low dimensions. Our results indicated that
bacterial dynamics are mainly affected by temporal gradients (seasonal gradients
with a clear winter versus summer opposition), and less by the spatial structure
(Berlenga and Canal). The yearly variation in the abundance of aerobic
heterotrophic bacteria were positively correlated with those in chlorophyll a
concentration, whereas ammonium concentration and temperature decreased with
increasing phosphates and nitrites concentration. The relationship between aerobic
heterotrophic bacteria, chlorophyll a and ammonium reveals that phytoplankton is
an important source of organic substrates for bacteria.
Descrição
Palavras-chave
Berlengas Natural Reserve aerobic heterotrophic bacteria sulphate-reducing bacteria nitrate-reducing bacteria
Contexto Educativo
Citação
Mendes, Susana & Fernández-Gómez, María José & Morgado, Felisbela & Maranhão, Paulo & Azeiteiro, Ulisses & Bacelar-Nicolau, Paula. (2009). The study of bacterioplankton dynamics in the Berlengas Archipelago (West coast of Portugal) by applying the HJ-biplot method. Arquipélago : Life and Marine Sciences. 26
Editora
Licença CC
Sem licença CC