Temperature effects on the heterotrophic bacteria, heterotrophic nanoflagellates, and microbial top predators of the NW Mediterranean

Vázquez-Domı́nguez, Evaristo; Vaqué, Dolors; Gasol, Josep M.

doi:10.3354/ame01583

Cited by 39 publications

(27 citation statements)

References 73 publications

(106 reference statements)

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“…This is in accordance with Hoch and Kirchman (1993) who reported that the bacterial growth rate is directly related to temperature during the cold months, but not during warm ones. A similar result was found in the NW Mediterranean, where small differences between the growth rates of bacteria under warming conditions and ambient temperatures were found in summer, and such difference increased in winter, when in situ temperatures were the lowest (Vázquez-Dominguez et al, 2012). Contrary to bacteria, the increase in growth rates of autotrophic picoplankton (PROC and SYN) due to an increase in temperature was also established in summer.…”

Section: Discussionsupporting

confidence: 82%

“…Edwards and Richardson, 2004;Wiltshire et al, 2008;Montoya and Raffaelli, 2010). It is well established that temperature significantly influences microbiological processes such as production (Rivkin et al, 1996;Hoppe et al, 2008;Šoli c et al, 2018a), growth rate (White et al, 1991;Shiah and Ducklow, 1994) and growth efficiency (Rivkin and Legendre, 2001), as well as grazing on bacteria (Vaqué et al, 1994;Krstulovi c, 1994, 1995;Vázquez-Dominguez et al, 2012) and viral lysis (Danovaro et al, 2011;Lara et al, 2013;Maranger et al, 2015;Tsai et al, 2015;Ordulj et al, 2017). Furthermore, temperature influences the complex microbial trophic interactions, altering food web structure and ecosystem functioning (Petchey et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

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Temperature and phosphorus interacts in controlling the picoplankton carbon flux in the Adriatic Sea: an experimental versus field study

Šolić

Šantić

Šestanović

et al. 2019

Environmental Microbiology

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Temperature and phosphorus positively interacted in controlling picoplankton biomass production and its transfer towards higher trophic levels. Two complementary approaches (experimental and field study) indicated several coherent patterns: (1) the impact of temperature on heterotrophic bacteria was high at temperatures lower than 16°C and levelled off at higher temperatures, whereas this impact on autotrophic picoplankton was linear along the entire range of the investigated temperatures; (2) the addition of phosphorus increased the values of picoplankton production and grazing, but did not change the nature of their relationships with temperature substantially; (3) the picoplankton carbon flux towards higher trophic levels was larger during the warmer months (grazing by HNF dominated during the warmer period and by ciliates during the colder period) and also strengthened in conditions without phosphorus limitation; (4) the hypothesis that the available phosphorus can be better utilized at higher temperatures was confirmed for both autotrophic and heterotrophic picoplankton; (5) the hypothesis that the rise in temperature stimulates growth only in conditions of sufficient phosphorus was confirmed only for heterotrophic bacteria. Therefore, in the global warming scenario, an increase of the picoplankton carbon flux towards higher trophic levels can be expected in the Adriatic Sea, particularly under unlimited phosphorus conditions.

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Temperature and phosphorus interacts in controlling the picoplankton carbon flux in the Adriatic Sea: an experimental versus field study

Šolić

Šantić

Šestanović

et al. 2019

Environmental Microbiology

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show abstract

“…Association network analysis further supports significant correlations between temperature and certain microbial groups (Fig. ), as previously reported (Kirchman et al ., ; Vázquez‐Domíniguez et al ., ). At the bottom, ambient temperature negatively affected Gamma‐ and Betaproteobacteria (r = −0.84, p 0 < 0.005 and r = −0.93, p 0 < 0.0005, respectively, Fig.…”

Section: Discussionmentioning

confidence: 97%

Bacterial community shift is induced by dynamic environmental parameters in a changing coastal ecosystem (northern Adriatic, northeastern Mediterranean Sea) – a 2‐year time‐series study

Tinta

Vojvoda

Mozetič

et al. 2014

Environmental Microbiology

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The potential link between the microbial dynamics and the environmental parameters was investigated in a semi-enclosed and highly dynamic coastal system (Gulf of Trieste, northern Adriatic Sea, NE Mediterranean Sea). Our comprehensive 2-year time-series study showed that despite the shallowness of this area, there was a significant difference between the surface and the bottom bacterial community structure. The bottom bacterial community was more diverse than the surface one and influenced by sediment re-suspension. The surface seawater temperature had a profound effect on bacterial productivity, while the bacterial community structure was more affected by freshwater-borne nutrients and phytoplankton blooms. Phytoplankton blooms caused an increase of Gammaproteobacteria (Alteromonadaceae, SAR86 and Vibrionaceae) and shift in dominance from SAR11 to Rhodobacteraceae taxon at the surface. Our results propose the importance of the water mass movements as drivers of freshwater-borne nutrients and of allochthonous microbial taxa. This study emphasizes the prediction power based on association networks analyses that are fed with long-term measurements of microbial and environmental parameters. These interaction maps offer valuable insights into the response of marine ecosystem to climate- and anthropogenic-driven stressors.

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“…), nutrient availability, grazing, and viral lysis [11][12][13]. It is well-established that temperature significantly influences microbiological processes such as production [14], growth rate [15,16], and growth efficiency [17], as well as grazing on bacteria [9,18,19] and viral lysis [20][21][22][23]. However, these processes have shown different sensitivity to temperature increases, which ultimately determines how the microbial community will respond to warming [24,25].…”

Section: Introductionmentioning

confidence: 99%

Changes in the Trophic Pathways within the Microbial Food Web in the Global Warming Scenario: An Experimental Study in the Adriatic Sea

et al. 2020

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A recent analysis of the Mediterranean Sea surface temperature showed significant annual warming. Since small picoplankton microorganisms play an important role in all major biogeochemical cycles, fluxes and processes occurring in marine systems (the changes at the base of the food web) as a response to human-induced temperature increase, could be amplified through the trophic chains and could also significantly affect different aspects of the structure and functioning of marine ecosystems. In this study, manipulative laboratory growth/grazing experiments were performed under in situ simulated conditions to study the structural and functional changes within the microbial food web after a 3 °C increase in temperature. The results show that a rise in temperature affects the changes in: (1) the growth and grazing rates of picoplankton, (2) their growth efficiency, (3) carrying capacities, (4) sensitivity of their production and grazing mortality to temperature, (5) satisfying protistan grazer carbon demands, (6) their preference in the selection of prey, (7) predator niche breadth and their overlap, (8) apparent uptake rates of nutrients, and (9) carbon biomass flow through the microbial food web. Furthermore, temperature affects the autotrophic and heterotrophic components of picoplankton in different ways.

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Temperature effects on the heterotrophic bacteria, heterotrophic nanoflagellates, and microbial top predators of the NW Mediterranean

Cited by 39 publications

References 73 publications

Temperature and phosphorus interacts in controlling the picoplankton carbon flux in the Adriatic Sea: an experimental versus field study

Temperature and phosphorus interacts in controlling the picoplankton carbon flux in the Adriatic Sea: an experimental versus field study

Bacterial community shift is induced by dynamic environmental parameters in a changing coastal ecosystem (northern Adriatic, northeastern Mediterranean Sea) – a 2‐year time‐series study

Changes in the Trophic Pathways within the Microbial Food Web in the Global Warming Scenario: An Experimental Study in the Adriatic Sea

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