The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach

Recent estimates of nutrient budgets for the Eastern Mediterranean Sea (EMS) indicate that atmospheric aerosols play a significant role as suppliers of macro- and micro- nutrients to its Low Nutrient Low Chlorophyll water. Here we present the first mesocosm experimental study that examines the overall response of the oligotrophic EMS surface mixed layer (Cretan Sea, May 2012) to two different types of natural aerosol additions, pure Saharan dust (SD, 1.6 mg l-1) and mixed aerosols (A - polluted and desert origin, 1 mg l-1). We describe the rationale, the experimental set-up, the chemical characteristics of the ambient water and aerosols and the relative maximal biological impacts that resulted from the added aerosols. The two treatments, run in triplicates (3 m3 each), were compared to control-unamended runs. Leaching of approximately 2.1-2.8 and 2.2-3.7 nmol PO4 and 20-26 and 53-55 nmol NOx was measured per each milligram of SD and A, respectively, representing an addition of approximately 30% of the ambient phosphate concentrations. The nitrate/phosphate ratios added in the A treatment were twice than those added in the SD treatment. Both types of dry aerosols triggered a positive change (25-600% normalized per 1 mg l-1 addition) in most of the rate and state variables that were measured: bacterial abundance (BA), bacterial production (BP), Synechococcus (Syn) abundance, chlorophyll-a (chl-a), primary production (PP) and dinitrogen fixation (N2-fix), with relative changes among them following the sequence BP<PP≈N2-fix<chl-a≈BA≈Syn. Our results show that the ‘polluted’ aerosols triggered a relatively larger biological change compared to the SD amendments (per a similar amount of mass addition), especially regarding BP and PP. We speculate that despite the co-limitation of P and N in the EMS, the additional N released by the A treatment may have triggered the relatively larger response in most of the rate and state variables as compared to SD. An implication of our study is that a warmer atmosphere in the future may increase dust emissions and influence the intensity and length of the already well stratified water column in the EMS and hence the impact of the aerosols as a significant external source of new nutrients. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Barak Herut [verfasserIn] Eyal Rahav [verfasserIn] Tatiana M Tsagaraki [verfasserIn] Antonia Giannakourou [verfasserIn] Anastasia Tsiola [verfasserIn] Stella Psarra [verfasserIn] Anna Lagaria [verfasserIn] Nafsika Papageorgiou [verfasserIn] Nikos Mihalopoulos [verfasserIn] Christina N Theodosi [verfasserIn] Eleni Stathopoulou [verfasserIn] Michael Scoullos [verfasserIn] Michael David Krom [verfasserIn] Anthony Stockdale [verfasserIn] Zongbo Shi [verfasserIn] Ilana Berman-Frank [verfasserIn] Travis Blake Meador [verfasserIn] Tsuneo Tanaka [verfasserIn] Cheung Shun-Yan [verfasserIn] Kalliopi Violaki [verfasserIn] Guo Cui [verfasserIn] Hongbin Liu [verfasserIn] Paraskevi Pitta [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2016

Schlagwörter:	Aerosols Dust Nutrients Trace metals mesocosm experiments Eastern Mediterranean Sea

Übergeordnetes Werk:	In: Frontiers in Marine Science - Frontiers Media S.A., 2015, 3(2016)
Übergeordnetes Werk:	volume:3 ; year:2016

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3389/fmars.2016.00226

Katalog-ID:	DOAJ072537019

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245	1	4	\|a The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach
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520			\|a Recent estimates of nutrient budgets for the Eastern Mediterranean Sea (EMS) indicate that atmospheric aerosols play a significant role as suppliers of macro- and micro- nutrients to its Low Nutrient Low Chlorophyll water. Here we present the first mesocosm experimental study that examines the overall response of the oligotrophic EMS surface mixed layer (Cretan Sea, May 2012) to two different types of natural aerosol additions, pure Saharan dust (SD, 1.6 mg l-1) and mixed aerosols (A - polluted and desert origin, 1 mg l-1). We describe the rationale, the experimental set-up, the chemical characteristics of the ambient water and aerosols and the relative maximal biological impacts that resulted from the added aerosols. The two treatments, run in triplicates (3 m3 each), were compared to control-unamended runs. Leaching of approximately 2.1-2.8 and 2.2-3.7 nmol PO4 and 20-26 and 53-55 nmol NOx was measured per each milligram of SD and A, respectively, representing an addition of approximately 30% of the ambient phosphate concentrations. The nitrate/phosphate ratios added in the A treatment were twice than those added in the SD treatment. Both types of dry aerosols triggered a positive change (25-600% normalized per 1 mg l-1 addition) in most of the rate and state variables that were measured: bacterial abundance (BA), bacterial production (BP), Synechococcus (Syn) abundance, chlorophyll-a (chl-a), primary production (PP) and dinitrogen fixation (N2-fix), with relative changes among them following the sequence BP<PP≈N2-fix<chl-a≈BA≈Syn. Our results show that the ‘polluted’ aerosols triggered a relatively larger biological change compared to the SD amendments (per a similar amount of mass addition), especially regarding BP and PP. We speculate that despite the co-limitation of P and N in the EMS, the additional N released by the A treatment may have triggered the relatively larger response in most of the rate and state variables as compared to SD. An implication of our study is that a warmer atmosphere in the future may increase dust emissions and influence the intensity and length of the already well stratified water column in the EMS and hence the impact of the aerosols as a significant external source of new nutrients.
650		4	\|a Aerosols
650		4	\|a Dust
650		4	\|a Nutrients
650		4	\|a Trace metals
650		4	\|a mesocosm experiments
650		4	\|a Eastern Mediterranean Sea
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700	0		\|a Eyal Rahav \|e verfasserin \|4 aut
700	0		\|a Tatiana M Tsagaraki \|e verfasserin \|4 aut
700	0		\|a Tatiana M Tsagaraki \|e verfasserin \|4 aut
700	0		\|a Antonia Giannakourou \|e verfasserin \|4 aut
700	0		\|a Anastasia Tsiola \|e verfasserin \|4 aut
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700	0		\|a Nafsika Papageorgiou \|e verfasserin \|4 aut
700	0		\|a Nikos Mihalopoulos \|e verfasserin \|4 aut
700	0		\|a Christina N Theodosi \|e verfasserin \|4 aut
700	0		\|a Eleni Stathopoulou \|e verfasserin \|4 aut
700	0		\|a Michael Scoullos \|e verfasserin \|4 aut
700	0		\|a Michael David Krom \|e verfasserin \|4 aut
700	0		\|a Michael David Krom \|e verfasserin \|4 aut
700	0		\|a Anthony Stockdale \|e verfasserin \|4 aut
700	0		\|a Zongbo Shi \|e verfasserin \|4 aut
700	0		\|a Ilana Berman-Frank \|e verfasserin \|4 aut
700	0		\|a Travis Blake Meador \|e verfasserin \|4 aut
700	0		\|a Tsuneo Tanaka \|e verfasserin \|4 aut
700	0		\|a Cheung Shun-Yan \|e verfasserin \|4 aut
700	0		\|a Kalliopi Violaki \|e verfasserin \|4 aut
700	0		\|a Guo Cui \|e verfasserin \|4 aut
700	0		\|a Hongbin Liu \|e verfasserin \|4 aut
700	0		\|a Paraskevi Pitta \|e verfasserin \|4 aut
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allfields	10.3389/fmars.2016.00226 doi (DE-627)DOAJ072537019 (DE-599)DOAJ83a13649f5fc467eac7053454fcb54ff DE-627 ger DE-627 rakwb eng QH1-199.5 Barak Herut verfasserin aut The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Recent estimates of nutrient budgets for the Eastern Mediterranean Sea (EMS) indicate that atmospheric aerosols play a significant role as suppliers of macro- and micro- nutrients to its Low Nutrient Low Chlorophyll water. Here we present the first mesocosm experimental study that examines the overall response of the oligotrophic EMS surface mixed layer (Cretan Sea, May 2012) to two different types of natural aerosol additions, pure Saharan dust (SD, 1.6 mg l-1) and mixed aerosols (A - polluted and desert origin, 1 mg l-1). We describe the rationale, the experimental set-up, the chemical characteristics of the ambient water and aerosols and the relative maximal biological impacts that resulted from the added aerosols. The two treatments, run in triplicates (3 m3 each), were compared to control-unamended runs. Leaching of approximately 2.1-2.8 and 2.2-3.7 nmol PO4 and 20-26 and 53-55 nmol NOx was measured per each milligram of SD and A, respectively, representing an addition of approximately 30% of the ambient phosphate concentrations. The nitrate/phosphate ratios added in the A treatment were twice than those added in the SD treatment. Both types of dry aerosols triggered a positive change (25-600% normalized per 1 mg l-1 addition) in most of the rate and state variables that were measured: bacterial abundance (BA), bacterial production (BP), Synechococcus (Syn) abundance, chlorophyll-a (chl-a), primary production (PP) and dinitrogen fixation (N2-fix), with relative changes among them following the sequence BP<PP≈N2-fix<chl-a≈BA≈Syn. Our results show that the ‘polluted’ aerosols triggered a relatively larger biological change compared to the SD amendments (per a similar amount of mass addition), especially regarding BP and PP. We speculate that despite the co-limitation of P and N in the EMS, the additional N released by the A treatment may have triggered the relatively larger response in most of the rate and state variables as compared to SD. An implication of our study is that a warmer atmosphere in the future may increase dust emissions and influence the intensity and length of the already well stratified water column in the EMS and hence the impact of the aerosols as a significant external source of new nutrients. Aerosols Dust Nutrients Trace metals mesocosm experiments Eastern Mediterranean Sea Science Q General. Including nature conservation, geographical distribution Eyal Rahav verfasserin aut Eyal Rahav verfasserin aut Tatiana M Tsagaraki verfasserin aut Tatiana M Tsagaraki verfasserin aut Antonia Giannakourou verfasserin aut Anastasia Tsiola verfasserin aut Stella Psarra verfasserin aut Anna Lagaria verfasserin aut Nafsika Papageorgiou verfasserin aut Nikos Mihalopoulos verfasserin aut Christina N Theodosi verfasserin aut Eleni Stathopoulou verfasserin aut Michael Scoullos verfasserin aut Michael David Krom verfasserin aut Michael David Krom verfasserin aut Anthony Stockdale verfasserin aut Zongbo Shi verfasserin aut Ilana Berman-Frank verfasserin aut Travis Blake Meador verfasserin aut Tsuneo Tanaka verfasserin aut Cheung Shun-Yan verfasserin aut Kalliopi Violaki verfasserin aut Guo Cui verfasserin aut Hongbin Liu verfasserin aut Paraskevi Pitta verfasserin aut In Frontiers in Marine Science Frontiers Media S.A., 2015 3(2016) (DE-627)779393945 (DE-600)2757748-X 22967745 nnns volume:3 year:2016 https://doi.org/10.3389/fmars.2016.00226 kostenfrei https://doaj.org/article/83a13649f5fc467eac7053454fcb54ff kostenfrei http://journal.frontiersin.org/Journal/10.3389/fmars.2016.00226/full kostenfrei https://doaj.org/toc/2296-7745 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2016
spelling	10.3389/fmars.2016.00226 doi (DE-627)DOAJ072537019 (DE-599)DOAJ83a13649f5fc467eac7053454fcb54ff DE-627 ger DE-627 rakwb eng QH1-199.5 Barak Herut verfasserin aut The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Recent estimates of nutrient budgets for the Eastern Mediterranean Sea (EMS) indicate that atmospheric aerosols play a significant role as suppliers of macro- and micro- nutrients to its Low Nutrient Low Chlorophyll water. Here we present the first mesocosm experimental study that examines the overall response of the oligotrophic EMS surface mixed layer (Cretan Sea, May 2012) to two different types of natural aerosol additions, pure Saharan dust (SD, 1.6 mg l-1) and mixed aerosols (A - polluted and desert origin, 1 mg l-1). We describe the rationale, the experimental set-up, the chemical characteristics of the ambient water and aerosols and the relative maximal biological impacts that resulted from the added aerosols. The two treatments, run in triplicates (3 m3 each), were compared to control-unamended runs. Leaching of approximately 2.1-2.8 and 2.2-3.7 nmol PO4 and 20-26 and 53-55 nmol NOx was measured per each milligram of SD and A, respectively, representing an addition of approximately 30% of the ambient phosphate concentrations. The nitrate/phosphate ratios added in the A treatment were twice than those added in the SD treatment. Both types of dry aerosols triggered a positive change (25-600% normalized per 1 mg l-1 addition) in most of the rate and state variables that were measured: bacterial abundance (BA), bacterial production (BP), Synechococcus (Syn) abundance, chlorophyll-a (chl-a), primary production (PP) and dinitrogen fixation (N2-fix), with relative changes among them following the sequence BP<PP≈N2-fix<chl-a≈BA≈Syn. Our results show that the ‘polluted’ aerosols triggered a relatively larger biological change compared to the SD amendments (per a similar amount of mass addition), especially regarding BP and PP. We speculate that despite the co-limitation of P and N in the EMS, the additional N released by the A treatment may have triggered the relatively larger response in most of the rate and state variables as compared to SD. An implication of our study is that a warmer atmosphere in the future may increase dust emissions and influence the intensity and length of the already well stratified water column in the EMS and hence the impact of the aerosols as a significant external source of new nutrients. Aerosols Dust Nutrients Trace metals mesocosm experiments Eastern Mediterranean Sea Science Q General. Including nature conservation, geographical distribution Eyal Rahav verfasserin aut Eyal Rahav verfasserin aut Tatiana M Tsagaraki verfasserin aut Tatiana M Tsagaraki verfasserin aut Antonia Giannakourou verfasserin aut Anastasia Tsiola verfasserin aut Stella Psarra verfasserin aut Anna Lagaria verfasserin aut Nafsika Papageorgiou verfasserin aut Nikos Mihalopoulos verfasserin aut Christina N Theodosi verfasserin aut Eleni Stathopoulou verfasserin aut Michael Scoullos verfasserin aut Michael David Krom verfasserin aut Michael David Krom verfasserin aut Anthony Stockdale verfasserin aut Zongbo Shi verfasserin aut Ilana Berman-Frank verfasserin aut Travis Blake Meador verfasserin aut Tsuneo Tanaka verfasserin aut Cheung Shun-Yan verfasserin aut Kalliopi Violaki verfasserin aut Guo Cui verfasserin aut Hongbin Liu verfasserin aut Paraskevi Pitta verfasserin aut In Frontiers in Marine Science Frontiers Media S.A., 2015 3(2016) (DE-627)779393945 (DE-600)2757748-X 22967745 nnns volume:3 year:2016 https://doi.org/10.3389/fmars.2016.00226 kostenfrei https://doaj.org/article/83a13649f5fc467eac7053454fcb54ff kostenfrei http://journal.frontiersin.org/Journal/10.3389/fmars.2016.00226/full kostenfrei https://doaj.org/toc/2296-7745 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2016
allfields_unstemmed	10.3389/fmars.2016.00226 doi (DE-627)DOAJ072537019 (DE-599)DOAJ83a13649f5fc467eac7053454fcb54ff DE-627 ger DE-627 rakwb eng QH1-199.5 Barak Herut verfasserin aut The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Recent estimates of nutrient budgets for the Eastern Mediterranean Sea (EMS) indicate that atmospheric aerosols play a significant role as suppliers of macro- and micro- nutrients to its Low Nutrient Low Chlorophyll water. Here we present the first mesocosm experimental study that examines the overall response of the oligotrophic EMS surface mixed layer (Cretan Sea, May 2012) to two different types of natural aerosol additions, pure Saharan dust (SD, 1.6 mg l-1) and mixed aerosols (A - polluted and desert origin, 1 mg l-1). We describe the rationale, the experimental set-up, the chemical characteristics of the ambient water and aerosols and the relative maximal biological impacts that resulted from the added aerosols. The two treatments, run in triplicates (3 m3 each), were compared to control-unamended runs. Leaching of approximately 2.1-2.8 and 2.2-3.7 nmol PO4 and 20-26 and 53-55 nmol NOx was measured per each milligram of SD and A, respectively, representing an addition of approximately 30% of the ambient phosphate concentrations. The nitrate/phosphate ratios added in the A treatment were twice than those added in the SD treatment. Both types of dry aerosols triggered a positive change (25-600% normalized per 1 mg l-1 addition) in most of the rate and state variables that were measured: bacterial abundance (BA), bacterial production (BP), Synechococcus (Syn) abundance, chlorophyll-a (chl-a), primary production (PP) and dinitrogen fixation (N2-fix), with relative changes among them following the sequence BP<PP≈N2-fix<chl-a≈BA≈Syn. Our results show that the ‘polluted’ aerosols triggered a relatively larger biological change compared to the SD amendments (per a similar amount of mass addition), especially regarding BP and PP. We speculate that despite the co-limitation of P and N in the EMS, the additional N released by the A treatment may have triggered the relatively larger response in most of the rate and state variables as compared to SD. An implication of our study is that a warmer atmosphere in the future may increase dust emissions and influence the intensity and length of the already well stratified water column in the EMS and hence the impact of the aerosols as a significant external source of new nutrients. Aerosols Dust Nutrients Trace metals mesocosm experiments Eastern Mediterranean Sea Science Q General. Including nature conservation, geographical distribution Eyal Rahav verfasserin aut Eyal Rahav verfasserin aut Tatiana M Tsagaraki verfasserin aut Tatiana M Tsagaraki verfasserin aut Antonia Giannakourou verfasserin aut Anastasia Tsiola verfasserin aut Stella Psarra verfasserin aut Anna Lagaria verfasserin aut Nafsika Papageorgiou verfasserin aut Nikos Mihalopoulos verfasserin aut Christina N Theodosi verfasserin aut Eleni Stathopoulou verfasserin aut Michael Scoullos verfasserin aut Michael David Krom verfasserin aut Michael David Krom verfasserin aut Anthony Stockdale verfasserin aut Zongbo Shi verfasserin aut Ilana Berman-Frank verfasserin aut Travis Blake Meador verfasserin aut Tsuneo Tanaka verfasserin aut Cheung Shun-Yan verfasserin aut Kalliopi Violaki verfasserin aut Guo Cui verfasserin aut Hongbin Liu verfasserin aut Paraskevi Pitta verfasserin aut In Frontiers in Marine Science Frontiers Media S.A., 2015 3(2016) (DE-627)779393945 (DE-600)2757748-X 22967745 nnns volume:3 year:2016 https://doi.org/10.3389/fmars.2016.00226 kostenfrei https://doaj.org/article/83a13649f5fc467eac7053454fcb54ff kostenfrei http://journal.frontiersin.org/Journal/10.3389/fmars.2016.00226/full kostenfrei https://doaj.org/toc/2296-7745 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2016
allfieldsGer	10.3389/fmars.2016.00226 doi (DE-627)DOAJ072537019 (DE-599)DOAJ83a13649f5fc467eac7053454fcb54ff DE-627 ger DE-627 rakwb eng QH1-199.5 Barak Herut verfasserin aut The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Recent estimates of nutrient budgets for the Eastern Mediterranean Sea (EMS) indicate that atmospheric aerosols play a significant role as suppliers of macro- and micro- nutrients to its Low Nutrient Low Chlorophyll water. Here we present the first mesocosm experimental study that examines the overall response of the oligotrophic EMS surface mixed layer (Cretan Sea, May 2012) to two different types of natural aerosol additions, pure Saharan dust (SD, 1.6 mg l-1) and mixed aerosols (A - polluted and desert origin, 1 mg l-1). We describe the rationale, the experimental set-up, the chemical characteristics of the ambient water and aerosols and the relative maximal biological impacts that resulted from the added aerosols. The two treatments, run in triplicates (3 m3 each), were compared to control-unamended runs. Leaching of approximately 2.1-2.8 and 2.2-3.7 nmol PO4 and 20-26 and 53-55 nmol NOx was measured per each milligram of SD and A, respectively, representing an addition of approximately 30% of the ambient phosphate concentrations. The nitrate/phosphate ratios added in the A treatment were twice than those added in the SD treatment. Both types of dry aerosols triggered a positive change (25-600% normalized per 1 mg l-1 addition) in most of the rate and state variables that were measured: bacterial abundance (BA), bacterial production (BP), Synechococcus (Syn) abundance, chlorophyll-a (chl-a), primary production (PP) and dinitrogen fixation (N2-fix), with relative changes among them following the sequence BP<PP≈N2-fix<chl-a≈BA≈Syn. Our results show that the ‘polluted’ aerosols triggered a relatively larger biological change compared to the SD amendments (per a similar amount of mass addition), especially regarding BP and PP. We speculate that despite the co-limitation of P and N in the EMS, the additional N released by the A treatment may have triggered the relatively larger response in most of the rate and state variables as compared to SD. An implication of our study is that a warmer atmosphere in the future may increase dust emissions and influence the intensity and length of the already well stratified water column in the EMS and hence the impact of the aerosols as a significant external source of new nutrients. Aerosols Dust Nutrients Trace metals mesocosm experiments Eastern Mediterranean Sea Science Q General. Including nature conservation, geographical distribution Eyal Rahav verfasserin aut Eyal Rahav verfasserin aut Tatiana M Tsagaraki verfasserin aut Tatiana M Tsagaraki verfasserin aut Antonia Giannakourou verfasserin aut Anastasia Tsiola verfasserin aut Stella Psarra verfasserin aut Anna Lagaria verfasserin aut Nafsika Papageorgiou verfasserin aut Nikos Mihalopoulos verfasserin aut Christina N Theodosi verfasserin aut Eleni Stathopoulou verfasserin aut Michael Scoullos verfasserin aut Michael David Krom verfasserin aut Michael David Krom verfasserin aut Anthony Stockdale verfasserin aut Zongbo Shi verfasserin aut Ilana Berman-Frank verfasserin aut Travis Blake Meador verfasserin aut Tsuneo Tanaka verfasserin aut Cheung Shun-Yan verfasserin aut Kalliopi Violaki verfasserin aut Guo Cui verfasserin aut Hongbin Liu verfasserin aut Paraskevi Pitta verfasserin aut In Frontiers in Marine Science Frontiers Media S.A., 2015 3(2016) (DE-627)779393945 (DE-600)2757748-X 22967745 nnns volume:3 year:2016 https://doi.org/10.3389/fmars.2016.00226 kostenfrei https://doaj.org/article/83a13649f5fc467eac7053454fcb54ff kostenfrei http://journal.frontiersin.org/Journal/10.3389/fmars.2016.00226/full kostenfrei https://doaj.org/toc/2296-7745 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2016
allfieldsSound	10.3389/fmars.2016.00226 doi (DE-627)DOAJ072537019 (DE-599)DOAJ83a13649f5fc467eac7053454fcb54ff DE-627 ger DE-627 rakwb eng QH1-199.5 Barak Herut verfasserin aut The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Recent estimates of nutrient budgets for the Eastern Mediterranean Sea (EMS) indicate that atmospheric aerosols play a significant role as suppliers of macro- and micro- nutrients to its Low Nutrient Low Chlorophyll water. Here we present the first mesocosm experimental study that examines the overall response of the oligotrophic EMS surface mixed layer (Cretan Sea, May 2012) to two different types of natural aerosol additions, pure Saharan dust (SD, 1.6 mg l-1) and mixed aerosols (A - polluted and desert origin, 1 mg l-1). We describe the rationale, the experimental set-up, the chemical characteristics of the ambient water and aerosols and the relative maximal biological impacts that resulted from the added aerosols. The two treatments, run in triplicates (3 m3 each), were compared to control-unamended runs. Leaching of approximately 2.1-2.8 and 2.2-3.7 nmol PO4 and 20-26 and 53-55 nmol NOx was measured per each milligram of SD and A, respectively, representing an addition of approximately 30% of the ambient phosphate concentrations. The nitrate/phosphate ratios added in the A treatment were twice than those added in the SD treatment. Both types of dry aerosols triggered a positive change (25-600% normalized per 1 mg l-1 addition) in most of the rate and state variables that were measured: bacterial abundance (BA), bacterial production (BP), Synechococcus (Syn) abundance, chlorophyll-a (chl-a), primary production (PP) and dinitrogen fixation (N2-fix), with relative changes among them following the sequence BP<PP≈N2-fix<chl-a≈BA≈Syn. Our results show that the ‘polluted’ aerosols triggered a relatively larger biological change compared to the SD amendments (per a similar amount of mass addition), especially regarding BP and PP. We speculate that despite the co-limitation of P and N in the EMS, the additional N released by the A treatment may have triggered the relatively larger response in most of the rate and state variables as compared to SD. An implication of our study is that a warmer atmosphere in the future may increase dust emissions and influence the intensity and length of the already well stratified water column in the EMS and hence the impact of the aerosols as a significant external source of new nutrients. Aerosols Dust Nutrients Trace metals mesocosm experiments Eastern Mediterranean Sea Science Q General. Including nature conservation, geographical distribution Eyal Rahav verfasserin aut Eyal Rahav verfasserin aut Tatiana M Tsagaraki verfasserin aut Tatiana M Tsagaraki verfasserin aut Antonia Giannakourou verfasserin aut Anastasia Tsiola verfasserin aut Stella Psarra verfasserin aut Anna Lagaria verfasserin aut Nafsika Papageorgiou verfasserin aut Nikos Mihalopoulos verfasserin aut Christina N Theodosi verfasserin aut Eleni Stathopoulou verfasserin aut Michael Scoullos verfasserin aut Michael David Krom verfasserin aut Michael David Krom verfasserin aut Anthony Stockdale verfasserin aut Zongbo Shi verfasserin aut Ilana Berman-Frank verfasserin aut Travis Blake Meador verfasserin aut Tsuneo Tanaka verfasserin aut Cheung Shun-Yan verfasserin aut Kalliopi Violaki verfasserin aut Guo Cui verfasserin aut Hongbin Liu verfasserin aut Paraskevi Pitta verfasserin aut In Frontiers in Marine Science Frontiers Media S.A., 2015 3(2016) (DE-627)779393945 (DE-600)2757748-X 22967745 nnns volume:3 year:2016 https://doi.org/10.3389/fmars.2016.00226 kostenfrei https://doaj.org/article/83a13649f5fc467eac7053454fcb54ff kostenfrei http://journal.frontiersin.org/Journal/10.3389/fmars.2016.00226/full kostenfrei https://doaj.org/toc/2296-7745 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2016
language	English
source	In Frontiers in Marine Science 3(2016) volume:3 year:2016
sourceStr	In Frontiers in Marine Science 3(2016) volume:3 year:2016
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Aerosols Dust Nutrients Trace metals mesocosm experiments Eastern Mediterranean Sea Science Q General. Including nature conservation, geographical distribution
isfreeaccess_bool	true
container_title	Frontiers in Marine Science
authorswithroles_txt_mv	Barak Herut @@aut@@ Eyal Rahav @@aut@@ Tatiana M Tsagaraki @@aut@@ Antonia Giannakourou @@aut@@ Anastasia Tsiola @@aut@@ Stella Psarra @@aut@@ Anna Lagaria @@aut@@ Nafsika Papageorgiou @@aut@@ Nikos Mihalopoulos @@aut@@ Christina N Theodosi @@aut@@ Eleni Stathopoulou @@aut@@ Michael Scoullos @@aut@@ Michael David Krom @@aut@@ Anthony Stockdale @@aut@@ Zongbo Shi @@aut@@ Ilana Berman-Frank @@aut@@ Travis Blake Meador @@aut@@ Tsuneo Tanaka @@aut@@ Cheung Shun-Yan @@aut@@ Kalliopi Violaki @@aut@@ Guo Cui @@aut@@ Hongbin Liu @@aut@@ Paraskevi Pitta @@aut@@
publishDateDaySort_date	2016-01-01T00:00:00Z
hierarchy_top_id	779393945
id	DOAJ072537019
language_de	englisch
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author	Barak Herut
spellingShingle	Barak Herut misc QH1-199.5 misc Aerosols misc Dust misc Nutrients misc Trace metals misc mesocosm experiments misc Eastern Mediterranean Sea misc Science misc Q misc General. Including nature conservation, geographical distribution The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach
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topic_title	QH1-199.5 The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach Aerosols Dust Nutrients Trace metals mesocosm experiments Eastern Mediterranean Sea
topic	misc QH1-199.5 misc Aerosols misc Dust misc Nutrients misc Trace metals misc mesocosm experiments misc Eastern Mediterranean Sea misc Science misc Q misc General. Including nature conservation, geographical distribution
topic_unstemmed	misc QH1-199.5 misc Aerosols misc Dust misc Nutrients misc Trace metals misc mesocosm experiments misc Eastern Mediterranean Sea misc Science misc Q misc General. Including nature conservation, geographical distribution
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title	The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach
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title_full	The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach
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title_sort	potential impact of saharan dust and polluted aerosols on microbial populations in the east mediterranean sea, an overview of a mesocosm experimental approach
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title_auth	The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach
abstract	Recent estimates of nutrient budgets for the Eastern Mediterranean Sea (EMS) indicate that atmospheric aerosols play a significant role as suppliers of macro- and micro- nutrients to its Low Nutrient Low Chlorophyll water. Here we present the first mesocosm experimental study that examines the overall response of the oligotrophic EMS surface mixed layer (Cretan Sea, May 2012) to two different types of natural aerosol additions, pure Saharan dust (SD, 1.6 mg l-1) and mixed aerosols (A - polluted and desert origin, 1 mg l-1). We describe the rationale, the experimental set-up, the chemical characteristics of the ambient water and aerosols and the relative maximal biological impacts that resulted from the added aerosols. The two treatments, run in triplicates (3 m3 each), were compared to control-unamended runs. Leaching of approximately 2.1-2.8 and 2.2-3.7 nmol PO4 and 20-26 and 53-55 nmol NOx was measured per each milligram of SD and A, respectively, representing an addition of approximately 30% of the ambient phosphate concentrations. The nitrate/phosphate ratios added in the A treatment were twice than those added in the SD treatment. Both types of dry aerosols triggered a positive change (25-600% normalized per 1 mg l-1 addition) in most of the rate and state variables that were measured: bacterial abundance (BA), bacterial production (BP), Synechococcus (Syn) abundance, chlorophyll-a (chl-a), primary production (PP) and dinitrogen fixation (N2-fix), with relative changes among them following the sequence BP<PP≈N2-fix<chl-a≈BA≈Syn. Our results show that the ‘polluted’ aerosols triggered a relatively larger biological change compared to the SD amendments (per a similar amount of mass addition), especially regarding BP and PP. We speculate that despite the co-limitation of P and N in the EMS, the additional N released by the A treatment may have triggered the relatively larger response in most of the rate and state variables as compared to SD. An implication of our study is that a warmer atmosphere in the future may increase dust emissions and influence the intensity and length of the already well stratified water column in the EMS and hence the impact of the aerosols as a significant external source of new nutrients.
abstractGer	Recent estimates of nutrient budgets for the Eastern Mediterranean Sea (EMS) indicate that atmospheric aerosols play a significant role as suppliers of macro- and micro- nutrients to its Low Nutrient Low Chlorophyll water. Here we present the first mesocosm experimental study that examines the overall response of the oligotrophic EMS surface mixed layer (Cretan Sea, May 2012) to two different types of natural aerosol additions, pure Saharan dust (SD, 1.6 mg l-1) and mixed aerosols (A - polluted and desert origin, 1 mg l-1). We describe the rationale, the experimental set-up, the chemical characteristics of the ambient water and aerosols and the relative maximal biological impacts that resulted from the added aerosols. The two treatments, run in triplicates (3 m3 each), were compared to control-unamended runs. Leaching of approximately 2.1-2.8 and 2.2-3.7 nmol PO4 and 20-26 and 53-55 nmol NOx was measured per each milligram of SD and A, respectively, representing an addition of approximately 30% of the ambient phosphate concentrations. The nitrate/phosphate ratios added in the A treatment were twice than those added in the SD treatment. Both types of dry aerosols triggered a positive change (25-600% normalized per 1 mg l-1 addition) in most of the rate and state variables that were measured: bacterial abundance (BA), bacterial production (BP), Synechococcus (Syn) abundance, chlorophyll-a (chl-a), primary production (PP) and dinitrogen fixation (N2-fix), with relative changes among them following the sequence BP<PP≈N2-fix<chl-a≈BA≈Syn. Our results show that the ‘polluted’ aerosols triggered a relatively larger biological change compared to the SD amendments (per a similar amount of mass addition), especially regarding BP and PP. We speculate that despite the co-limitation of P and N in the EMS, the additional N released by the A treatment may have triggered the relatively larger response in most of the rate and state variables as compared to SD. An implication of our study is that a warmer atmosphere in the future may increase dust emissions and influence the intensity and length of the already well stratified water column in the EMS and hence the impact of the aerosols as a significant external source of new nutrients.
abstract_unstemmed	Recent estimates of nutrient budgets for the Eastern Mediterranean Sea (EMS) indicate that atmospheric aerosols play a significant role as suppliers of macro- and micro- nutrients to its Low Nutrient Low Chlorophyll water. Here we present the first mesocosm experimental study that examines the overall response of the oligotrophic EMS surface mixed layer (Cretan Sea, May 2012) to two different types of natural aerosol additions, pure Saharan dust (SD, 1.6 mg l-1) and mixed aerosols (A - polluted and desert origin, 1 mg l-1). We describe the rationale, the experimental set-up, the chemical characteristics of the ambient water and aerosols and the relative maximal biological impacts that resulted from the added aerosols. The two treatments, run in triplicates (3 m3 each), were compared to control-unamended runs. Leaching of approximately 2.1-2.8 and 2.2-3.7 nmol PO4 and 20-26 and 53-55 nmol NOx was measured per each milligram of SD and A, respectively, representing an addition of approximately 30% of the ambient phosphate concentrations. The nitrate/phosphate ratios added in the A treatment were twice than those added in the SD treatment. Both types of dry aerosols triggered a positive change (25-600% normalized per 1 mg l-1 addition) in most of the rate and state variables that were measured: bacterial abundance (BA), bacterial production (BP), Synechococcus (Syn) abundance, chlorophyll-a (chl-a), primary production (PP) and dinitrogen fixation (N2-fix), with relative changes among them following the sequence BP<PP≈N2-fix<chl-a≈BA≈Syn. Our results show that the ‘polluted’ aerosols triggered a relatively larger biological change compared to the SD amendments (per a similar amount of mass addition), especially regarding BP and PP. We speculate that despite the co-limitation of P and N in the EMS, the additional N released by the A treatment may have triggered the relatively larger response in most of the rate and state variables as compared to SD. An implication of our study is that a warmer atmosphere in the future may increase dust emissions and influence the intensity and length of the already well stratified water column in the EMS and hence the impact of the aerosols as a significant external source of new nutrients.
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title_short	The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach
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fullrecord_marcxml	<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">DOAJ072537019</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230309110738.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">230228s2016 xx \|\|\|\|\|o 00\| \|\|eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.3389/fmars.2016.00226</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)DOAJ072537019</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)DOAJ83a13649f5fc467eac7053454fcb54ff</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="050" ind1=" " ind2="0"><subfield code="a">QH1-199.5</subfield></datafield><datafield tag="100" ind1="0" ind2=" "><subfield code="a">Barak Herut</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="4"><subfield code="a">The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2016</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Recent estimates of nutrient budgets for the Eastern Mediterranean Sea (EMS) indicate that atmospheric aerosols play a significant role as suppliers of macro- and micro- nutrients to its Low Nutrient Low Chlorophyll water. Here we present the first mesocosm experimental study that examines the overall response of the oligotrophic EMS surface mixed layer (Cretan Sea, May 2012) to two different types of natural aerosol additions, pure Saharan dust (SD, 1.6 mg l-1) and mixed aerosols (A - polluted and desert origin, 1 mg l-1). We describe the rationale, the experimental set-up, the chemical characteristics of the ambient water and aerosols and the relative maximal biological impacts that resulted from the added aerosols. The two treatments, run in triplicates (3 m3 each), were compared to control-unamended runs. Leaching of approximately 2.1-2.8 and 2.2-3.7 nmol PO4 and 20-26 and 53-55 nmol NOx was measured per each milligram of SD and A, respectively, representing an addition of approximately 30% of the ambient phosphate concentrations. The nitrate/phosphate ratios added in the A treatment were twice than those added in the SD treatment. Both types of dry aerosols triggered a positive change (25-600% normalized per 1 mg l-1 addition) in most of the rate and state variables that were measured: bacterial abundance (BA), bacterial production (BP), Synechococcus (Syn) abundance, chlorophyll-a (chl-a), primary production (PP) and dinitrogen fixation (N2-fix), with relative changes among them following the sequence BP<PP≈N2-fix<chl-a≈BA≈Syn. Our results show that the ‘polluted’ aerosols triggered a relatively larger biological change compared to the SD amendments (per a similar amount of mass addition), especially regarding BP and PP. We speculate that despite the co-limitation of P and N in the EMS, the additional N released by the A treatment may have triggered the relatively larger response in most of the rate and state variables as compared to SD. An implication of our study is that a warmer atmosphere in the future may increase dust emissions and influence the intensity and length of the already well stratified water column in the EMS and hence the impact of the aerosols as a significant external source of new nutrients.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Aerosols</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Dust</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Nutrients</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Trace metals</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">mesocosm experiments</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Eastern Mediterranean Sea</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Science</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Q</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">General. 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The potential impact of Saharan dust and polluted aerosols on microbial populations in the East Mediterranean Sea, an overview of a mesocosm experimental approach

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