TY - GEN
T1 - Effect Of Dust On The Microbial Community Structure And Function In The Arabian Gulf
AU - Alnajjar, Mohammad Ahmad
AU - Fink, Artur
AU - Munday, Christopher
AU - Hamza, Waleed
AU - Al-ansari, Ibrahim
AU - Al-shaikh, Ismail
AU - Stuut, Jan-berend
AU - Sevilgen, Duygu
AU - Al-maslamani, Ibrahim
AU - Akail, Said
AU - Rasty, Nadia
AU - Al-azba, Hadia
AU - Al-saady, Lobna
AU - Abdel-moati, Mohamed
AU - de Beer, Dirk
N1 - KAUST Repository Item: Exported on 2021-04-08
PY - 2014
Y1 - 2014
N2 - The Arabian Gulf, surrounded by deserts, is an ideal marine basin to study the effects of nutrient input from dust on primary productivity. We studied the microbial community composition of the water column and sediment using 16S r-RNA gene sequencing, and the activity of photosynthetic microorganisms using pigment analysis and microsensors measurements in February and October 2013 and February 2014. We collected samples from three stations (1CD, 2CD & 3CD) along an inshore-offshore transect extending from Doha to the middle of the gulf. Our results showed that although the water column had more pigment diversity than that of the sediment, the latter had higher pigment concentrations. This applies to all the samples collected from different locations during the 3 cruises. In October the pigment content in the water column was ~2 times higher than in February. This indicates higher primary productivity in October than in February, which might have resulted from the nutritive effect of dust after the intensive dust storms during the summer season. The microbial community structure (on class level) of the water column was determined on samples from the 3 sites collected in the two cruises in 2013. The highest contribution of the surface water samples came from members of phyla cyanobacteria and proteobacteria. At deep water, the Proteobacteria dominated over the cyanobacteria. The microbial community structure in the sediment is strongly dominated by members of Proteobacteria (70-78%), while the relative abundance of cyanobacteria dropped to
AB - The Arabian Gulf, surrounded by deserts, is an ideal marine basin to study the effects of nutrient input from dust on primary productivity. We studied the microbial community composition of the water column and sediment using 16S r-RNA gene sequencing, and the activity of photosynthetic microorganisms using pigment analysis and microsensors measurements in February and October 2013 and February 2014. We collected samples from three stations (1CD, 2CD & 3CD) along an inshore-offshore transect extending from Doha to the middle of the gulf. Our results showed that although the water column had more pigment diversity than that of the sediment, the latter had higher pigment concentrations. This applies to all the samples collected from different locations during the 3 cruises. In October the pigment content in the water column was ~2 times higher than in February. This indicates higher primary productivity in October than in February, which might have resulted from the nutritive effect of dust after the intensive dust storms during the summer season. The microbial community structure (on class level) of the water column was determined on samples from the 3 sites collected in the two cruises in 2013. The highest contribution of the surface water samples came from members of phyla cyanobacteria and proteobacteria. At deep water, the Proteobacteria dominated over the cyanobacteria. The microbial community structure in the sediment is strongly dominated by members of Proteobacteria (70-78%), while the relative abundance of cyanobacteria dropped to
UR - http://hdl.handle.net/10754/668571
UR - https://www.qscience.com/content/papers/10.5339/qfarc.2014.EEPP0541
U2 - 10.5339/qfarc.2014.eepp0541
DO - 10.5339/qfarc.2014.eepp0541
M3 - Conference contribution
BT - Qatar Foundation Annual Research Conference Proceedings Volume 2014 Issue 1
PB - Hamad bin Khalifa University Press (HBKU Press)
ER -