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  "code": "7b.b.hc",
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  "code": "7b.b.hc",
            
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  "contributor": "NIOZ Royal Netherlands Institute for Sea Research",
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  "contributor": "NIOZ Royal Netherlands Institute for Sea Research",
            
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  "creators": 
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firstname\":\"Tristan\",\"lastname\":\"Biggs\",\"affiliation\":\"Royal 
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firstname\":\"Tristan\",\"lastname\":\"Biggs\",\"affiliation\":\"Royal 
            
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Netherlands Institute for Sea 
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Netherlands Institute for Sea 
            
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stname\":\"Corina\",\"lastname\":\"Brussaard\",\"affiliation\":\"Royal 
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stname\":\"Corina\",\"lastname\":\"Brussaard\",\"affiliation\":\"Royal 
            
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Netherlands Institute for Sea 
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Netherlands Institute for Sea 
            
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name\":\"Jef\",\"lastname\":\"Huisman\",\"affiliation\":\"Universiteit 
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name\":\"Jef\",\"lastname\":\"Huisman\",\"affiliation\":\"Universiteit 
            
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van 
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van 
            
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  "dates": 
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  "dates": 
            
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22:00:00.000Z\",\"type\":\"collected\",\"information\":\"Environmental 
            
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and biological time series 
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and biological time series 
            
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T23:00:00.000Z\",\"type\":\"collected\",\"information\":\"Experimental 
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time period\"}]",
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  "deposit_date": "2021-05-07",
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  "deposit_date": "2021-05-07",
            
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  "depositor": "Tristan Biggs",
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  "depositor": "Tristan Biggs",
            
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  "distribution_date": "2021-05-07",
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  "distribution_date": "2021-05-07",
            
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  "distributor": "Research Data Management(NIOZ Royal Netherlands 
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  "distributor": "Research Data Management(NIOZ Royal Netherlands 
            
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Institute for Sea Research)",
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Institute for Sea Research)",
            
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  "doi_date_published": "2021-05-07",
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  "doi_date_published": "2021-05-07",
            
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  "funding_references": "[{\"name\":\"Dutch Research Council 
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  "funding_references": "[{\"name\":\"Dutch Research Council 
            
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(NWO)\",\"awardnumber\":\"866.10.102\",\"awardtitle\":\"Antarctic 
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(NWO)\",\"awardnumber\":\"866.10.102\",\"awardtitle\":\"Antarctic 
            
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phytoplankton in a changing world and its consequences for the lower 
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phytoplankton in a changing world and its consequences for the lower 
            
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pelagic food web (Antphirco)\"}]",
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pelagic food web (Antphirco)\"}]",
            
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  "metadata_created": "2024-10-22T11:43:18.032856",
            
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  "name": "7bbhc",
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  "name": "7bbhc",
            
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  "notes": "Phytoplankton form the base of marine food webs and are a 
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  "notes": "Phytoplankton form the base of marine food webs and are a 
            
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primary means for carbon export in the Southern Ocean, a key area for 
43
primary means for carbon export in the Southern Ocean, a key area for 
            
44
global pCO2 drawdown. Viral lysis and grazing have very different 
44
global pCO2 drawdown. Viral lysis and grazing have very different 
            
45
effects on microbial community dynamics and carbon export, yet, very 
45
effects on microbial community dynamics and carbon export, yet, very 
            
46
little is known about the relative magnitude and ecological impact of 
46
little is known about the relative magnitude and ecological impact of 
            
47
viral lysis on natural phytoplankton communities, especially in 
47
viral lysis on natural phytoplankton communities, especially in 
            
48
Antarctic waters. Here, we report on the temporal dynamics and 
48
Antarctic waters. Here, we report on the temporal dynamics and 
            
49
relative importance of viral lysis rates, in comparison to grazing, 
49
relative importance of viral lysis rates, in comparison to grazing, 
            
50
for Antarctic nano- and pico-sized phytoplankton of varied taxonomy 
50
for Antarctic nano- and pico-sized phytoplankton of varied taxonomy 
            
51
and size over a full productive season. Our results show that viral 
51
and size over a full productive season. Our results show that viral 
            
52
lysis was a major loss factor throughout the season, responsible for 
52
lysis was a major loss factor throughout the season, responsible for 
            
53
roughly half (58%) of seasonal phytoplankton carbon losses. Viral 
53
roughly half (58%) of seasonal phytoplankton carbon losses. Viral 
            
54
lysis appeared critically important for explaining temporal dynamics 
54
lysis appeared critically important for explaining temporal dynamics 
            
55
and for obtaining a complete seasonal mass balance of Antarctic 
55
and for obtaining a complete seasonal mass balance of Antarctic 
            
56
phytoplankton. Group-specific responses indicated a negative 
56
phytoplankton. Group-specific responses indicated a negative 
            
57
correlation between grazing and viral losses in Phaeocystis and 
57
correlation between grazing and viral losses in Phaeocystis and 
            
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picoeukaryotes, while for other phytoplankton groups losses were more 
58
picoeukaryotes, while for other phytoplankton groups losses were more 
            
59
evenly spread throughout the season. Cryptophyte mortality was 
59
evenly spread throughout the season. Cryptophyte mortality was 
            
60
dominated by viral lysis, whereas small diatoms were mostly grazed. 
60
dominated by viral lysis, whereas small diatoms were mostly grazed. 
            
61
Larger diatoms dominated algal carbon flow and a single \u2018lysis 
61
Larger diatoms dominated algal carbon flow and a single \u2018lysis 
            
62
event\u2019 directed > 100% of daily carbon production away from 
62
event\u2019 directed > 100% of daily carbon production away from 
            
63
higher trophic levels. This study highlights the need to consider 
63
higher trophic levels. This study highlights the need to consider 
            
64
viral lysis of key Antarctic phytoplankton for a better understanding 
64
viral lysis of key Antarctic phytoplankton for a better understanding 
            
65
of microbial community interactions and more accurate predictions of 
65
of microbial community interactions and more accurate predictions of 
            
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organic matter flux in this climate-sensitive region.",
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organic matter flux in this climate-sensitive region.",
            
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  "title": "Viral lysis modifies seasonal phytoplankton dynamics and 
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  "title": "Viral lysis modifies seasonal phytoplankton dynamics and 
            
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carbon flow in the Southern Ocean",
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carbon flow in the Southern Ocean",
            
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