Coupling bacterioplankton populations and environment to community function in coastal temperate waters

Sachia Jo Traving; Mikkel Bentzon-Tilia; H. Knudsen-Leerbeck; M, Mantikci; J.L.S. Hansen; C.A. Stedmon; Helle Sørensen; S. Markager; Lasse Riemann

doi:10.3389/fmicb.2016.01533

Coupling bacterioplankton populations and environment to community function in coastal temperate waters

Sachia Jo Traving, Mikkel Bentzon-Tilia, H. Knudsen-Leerbeck, M, Mantikci, J.L.S. Hansen, C.A. Stedmon, Helle Sørensen, S. Markager, Lasse Riemann

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Abstract

Bacterioplankton play a key role in marine waters facilitating processes important for carbon cycling. However, the influence of specific bacterial populations and environmental conditions on bacterioplankton community performance remains unclear. The aim of the present study was to identify drivers of bacterioplankton community functions, taking into account the variability in community composition and environmental conditions over seasons, in two contrasting coastal systems. A Least Absolute Shrinkage and Selection Operator (LASSO) analysis of the biological and chemical data obtained from surface waters over a full year indicated that specific bacterial populations were linked to measured functions. Namely, Synechococcus (Cyanobacteria) was strongly correlated with protease activity. Both function and community composition showed seasonal variation. However, the pattern of substrate utilization capacity could not be directly linked to the community dynamics. The overall importance of dissolved organic matter (DOM) parameters in the LASSO models indicate that bacterioplankton respond to the present substrate landscape, with a particular importance of nitrogenous DOM. The identification of common drivers of bacterioplankton community functions in two different systems indicates that the drivers may be of broader relevance in coastal temperate waters.

Original language	English
Article number	1533
Journal	Frontiers in Microbiology
Volume	7
Number of pages	13
ISSN	1664-302X
DOIs	https://doi.org/10.3389/fmicb.2016.01533
Publication status	Published - 27 Sept 2016

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title = "Coupling bacterioplankton populations and environment to community function in coastal temperate waters",

abstract = "Bacterioplankton play a key role in marine waters facilitating processes important for carbon cycling. However, the influence of specific bacterial populations and environmental conditions on bacterioplankton community performance remains unclear. The aim of the present study was to identify drivers of bacterioplankton community functions, taking into account the variability in community composition and environmental conditions over seasons, in two contrasting coastal systems. A Least Absolute Shrinkage and Selection Operator (LASSO) analysis of the biological and chemical data obtained from surface waters over a full year indicated that specific bacterial populations were linked to measured functions. Namely, Synechococcus (Cyanobacteria) was strongly correlated with protease activity. Both function and community composition showed seasonal variation. However, the pattern of substrate utilization capacity could not be directly linked to the community dynamics. The overall importance of dissolved organic matter (DOM) parameters in the LASSO models indicate that bacterioplankton respond to the present substrate landscape, with a particular importance of nitrogenous DOM. The identification of common drivers of bacterioplankton community functions in two different systems indicates that the drivers may be of broader relevance in coastal temperate waters.",

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AU - Traving, Sachia Jo

AU - Bentzon-Tilia, Mikkel

AU - Knudsen-Leerbeck, H.

AU - Mantikci, M,

AU - Hansen, J.L.S.

AU - Stedmon, C.A.

AU - Sørensen, Helle

AU - Markager, S.

AU - Riemann, Lasse

PY - 2016/9/27

Y1 - 2016/9/27

N2 - Bacterioplankton play a key role in marine waters facilitating processes important for carbon cycling. However, the influence of specific bacterial populations and environmental conditions on bacterioplankton community performance remains unclear. The aim of the present study was to identify drivers of bacterioplankton community functions, taking into account the variability in community composition and environmental conditions over seasons, in two contrasting coastal systems. A Least Absolute Shrinkage and Selection Operator (LASSO) analysis of the biological and chemical data obtained from surface waters over a full year indicated that specific bacterial populations were linked to measured functions. Namely, Synechococcus (Cyanobacteria) was strongly correlated with protease activity. Both function and community composition showed seasonal variation. However, the pattern of substrate utilization capacity could not be directly linked to the community dynamics. The overall importance of dissolved organic matter (DOM) parameters in the LASSO models indicate that bacterioplankton respond to the present substrate landscape, with a particular importance of nitrogenous DOM. The identification of common drivers of bacterioplankton community functions in two different systems indicates that the drivers may be of broader relevance in coastal temperate waters.

AB - Bacterioplankton play a key role in marine waters facilitating processes important for carbon cycling. However, the influence of specific bacterial populations and environmental conditions on bacterioplankton community performance remains unclear. The aim of the present study was to identify drivers of bacterioplankton community functions, taking into account the variability in community composition and environmental conditions over seasons, in two contrasting coastal systems. A Least Absolute Shrinkage and Selection Operator (LASSO) analysis of the biological and chemical data obtained from surface waters over a full year indicated that specific bacterial populations were linked to measured functions. Namely, Synechococcus (Cyanobacteria) was strongly correlated with protease activity. Both function and community composition showed seasonal variation. However, the pattern of substrate utilization capacity could not be directly linked to the community dynamics. The overall importance of dissolved organic matter (DOM) parameters in the LASSO models indicate that bacterioplankton respond to the present substrate landscape, with a particular importance of nitrogenous DOM. The identification of common drivers of bacterioplankton community functions in two different systems indicates that the drivers may be of broader relevance in coastal temperate waters.

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DO - 10.3389/fmicb.2016.01533

M3 - Journal article

C2 - 27729909

SN - 1664-302X

VL - 7

JO - Frontiers in Microbiology

JF - Frontiers in Microbiology

M1 - 1533

ER -

Coupling bacterioplankton populations and environment to community function in coastal temperate waters

Abstract

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