7 research outputs found

    Proportional effects of sediment chemical and spatial factors as well as other properties of the sampling sites on the variation in bacterial communities in organic-rich brackish sediments.

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    <p>Chemical parameters included those used in CAP (refer to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0067061#pone-0067061-g003" target="_blank">Figure 3</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0067061#pone.0067061.s007" target="_blank">Dataset S2</a>). Spatial parameters included geographic coordinates and sediment depth, and other properties of the sampling sites consisted of sediment accumulation rate (SAR) and water depth (refer to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0067061#pone.0067061.s004" target="_blank">Table S1</a>).</p

    The research area and the sediment sampling sites.

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    <p>(A) Sediment sampling area in the northern Baltic Proper (1), in the Gulf of Finland (2−9), and in Ahvenkoskenlahti Bay (10−12) in the brackish Baltic Sea. The numbers refer to samplings site as follows: 1 = AS7, 2 = JML, 3 = C63, 4 = E3, 5 = GF2F, 6 = LL3A, 7 = Bisa1, 8 = XV1, 9 = BZ1, 10 = AHLA2, 11 = AHLA 6 and 12 = AHLA9. (B) A magnification of Ahvenkoskenlahti Bay and the location of sampling sites in the estuary.</p

    Effects of individual chemical parameters used in CAP analysis on bacteria community composition in the brackish sediment samples.

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    <p>The distance-based multivariate multiple regression analysis was performed on terminal restriction fragments of bacterial 16S rRNA genes produced by HaeIII and sediment chemical parameters.</p>1<p>Proportion of each chemical parameter in the variation in bacterial communities.</p>2<p>Cumulative proportion of chemical parameter in the variation in bacterial communities.</p

    Characteristic T-RFs of bacterial communities in the estuary, coastal and open-sea sediment samples and in the sediment samples from different depths.

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    <p>Distance-based discriminant analysis was performed on bacterial T-RF data (produced by HaeIII), which were divided into <i>a priori</i> groups of (A) estuary, coastal and open-sea sediments as well as (B) depth classes. Taxonomic assignments of T-RFs (refer to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0067061#pone.0067061.s005" target="_blank">Table S2</a>): Black numbers = <i>Alphaproteobacteria</i>, <i>Flavobacteria</i>, <i>Gammaproteobacteria</i> and/or <i>Sphingobacteria</i> (each T-RF represented more than one taxon), red numbers = <i>Chloroflexi</i> (mainly family <i>Anaerolineaceae</i>), green numbers = <i>Deltaproteobacteria</i>; sulphate reducing taxa, orange numbers = <i>Betaproteobacteria</i>, violet numers = <i>Clostridia</i>, and light blue numbers = <i>Planctomycetes</i>. Only those T-RFs that affected the differentiation of a <i>priori groups</i> (canonical scores of discriminant axes 1 and 2 were above 1.0) and which belonged to the most common bacterial groups in each <i>a priori</i> group were included.</p