@article{
 title = {Environmental Dynamics as a Structuring Factor for Microbial Carbon Utilization in a Subtropical Coastal Lagoon},
 type = {article},
 year = {2013},
 identifiers = {[object Object]},
 keywords = {crn3038},
 volume = {4},
 websites = {http://dx.doi.org/10.3389/fmicb.2013.00014,citeulike-article-id:14168706},
 editors = {[object Object]},
 id = {2449d498-d276-3f4d-b998-fe730d11e284},
 created = {2019-04-01T18:02:09.244Z},
 file_attached = {false},
 profile_id = {1f5347e3-dec5-3349-a941-3b484c2dfce9},
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 abstract = {Laguna  de  Rocha  belongs  to  a  series  of  shallow  coastal  lagoons  located  along  SouthAmerica. It is periodically connected to the sea through a sand bar, exhibiting a hydro-logical cycle where physicochemical and biological gradients are rapidly established anddestroyed. Its most frequent state is the separation of a Northern zone with low salin-ity, high turbidity and nutrient load, and extensive macrophyte growth, and a Southernzone with higher salinity and light penetration, and low nutrient content and macrophytebiomass. This zonation is reflected in microbial assemblages with contrasting abundance,activity,  and  community  composition. The  physicochemical  conditions  exerted  a  stronginfluence on community composition, and transplanted assemblages rapidly transformedto resembling the community of the recipient environment. Moreover, the major bacterialgroups  responded  differently  to  their  passage  between  the  zones,  being  either  stimu-lated or inhibited by the environmental changes, and exhibiting contrasting sensitivitiesto gradients. Addition of allochthonous carbon sources induced pronounced shifts in thebacterial communities, which in turn affected the microbial trophic web by stimulating heterotrophic flagellates and virus production. By contrast, addition of organic and inorganicnutrient sources (P or N) did not have significant effects. Altogether, our results suggestthat (i) the planktonic microbial assemblage of this lagoon is predominantly carbon-limited,(ii) different bacterial groups cope differently with this constraint, and (iii) the hydrologicalcycle of the lagoon plays a key role for the alleviation or aggravation of bacterial carbonlimitation. Based on these findings we propose a model of how hydrology affects the com-position of bacterioplankton and of carbon processing in Laguna de Rocha.This might serveas a starting hypothesis for further studies about the microbial ecology of this lagoon, andof comparable transitional systems},
 bibtype = {article},
 author = {Alonso, C and Piccini, C and Unrein, F and Bertoglio, F and Conde, D and Pernthaler, J},
 journal = {Frontiers in Microbiology}
}

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It is periodically connected to the sea through a sand bar, exhibiting a hydro-logical cycle where physicochemical and biological gradients are rapidly established anddestroyed. Its most frequent state is the separation of a Northern zone with low salin-ity, high turbidity and nutrient load, and extensive macrophyte growth, and a Southernzone with higher salinity and light penetration, and low nutrient content and macrophytebiomass. This zonation is reflected in microbial assemblages with contrasting abundance,activity, and community composition. The physicochemical conditions exerted a stronginfluence on community composition, and transplanted assemblages rapidly transformedto resembling the community of the recipient environment. Moreover, the major bacterialgroups responded differently to their passage between the zones, being either stimu-lated or inhibited by the environmental changes, and exhibiting contrasting sensitivitiesto gradients. Addition of allochthonous carbon sources induced pronounced shifts in thebacterial communities, which in turn affected the microbial trophic web by stimulating heterotrophic flagellates and virus production. By contrast, addition of organic and inorganicnutrient sources (P or N) did not have significant effects. Altogether, our results suggestthat (i) the planktonic microbial assemblage of this lagoon is predominantly carbon-limited,(ii) different bacterial groups cope differently with this constraint, and (iii) the hydrologicalcycle of the lagoon plays a key role for the alleviation or aggravation of bacterial carbonlimitation. Based on these findings we propose a model of how hydrology affects the com-position of bacterioplankton and of carbon processing in Laguna de Rocha.This might serveas a starting hypothesis for further studies about the microbial ecology of this lagoon, andof comparable transitional systems","bibtype":"article","author":"Alonso, C and Piccini, C and Unrein, F and Bertoglio, F and Conde, D and Pernthaler, J","journal":"Frontiers in Microbiology","bibtex":"@article{\n title = {Environmental Dynamics as a Structuring Factor for Microbial Carbon Utilization in a Subtropical Coastal Lagoon},\n type = {article},\n year = {2013},\n identifiers = {[object Object]},\n keywords = {crn3038},\n volume = {4},\n websites = {http://dx.doi.org/10.3389/fmicb.2013.00014,citeulike-article-id:14168706},\n editors = {[object Object]},\n id = {2449d498-d276-3f4d-b998-fe730d11e284},\n created = {2019-04-01T18:02:09.244Z},\n file_attached = {false},\n profile_id = {1f5347e3-dec5-3349-a941-3b484c2dfce9},\n group_id = {184ee5d4-bd93-3566-938b-14cc43849390},\n last_modified = {2019-04-01T18:02:09.244Z},\n read = {false},\n starred = {false},\n authored = {false},\n confirmed = {false},\n hidden = {false},\n source_type = {JOUR},\n private_publication = {false},\n abstract = {Laguna de Rocha belongs to a series of shallow coastal lagoons located along SouthAmerica. It is periodically connected to the sea through a sand bar, exhibiting a hydro-logical cycle where physicochemical and biological gradients are rapidly established anddestroyed. Its most frequent state is the separation of a Northern zone with low salin-ity, high turbidity and nutrient load, and extensive macrophyte growth, and a Southernzone with higher salinity and light penetration, and low nutrient content and macrophytebiomass. This zonation is reflected in microbial assemblages with contrasting abundance,activity, and community composition. The physicochemical conditions exerted a stronginfluence on community composition, and transplanted assemblages rapidly transformedto resembling the community of the recipient environment. Moreover, the major bacterialgroups responded differently to their passage between the zones, being either stimu-lated or inhibited by the environmental changes, and exhibiting contrasting sensitivitiesto gradients. Addition of allochthonous carbon sources induced pronounced shifts in thebacterial communities, which in turn affected the microbial trophic web by stimulating heterotrophic flagellates and virus production. By contrast, addition of organic and inorganicnutrient sources (P or N) did not have significant effects. Altogether, our results suggestthat (i) the planktonic microbial assemblage of this lagoon is predominantly carbon-limited,(ii) different bacterial groups cope differently with this constraint, and (iii) the hydrologicalcycle of the lagoon plays a key role for the alleviation or aggravation of bacterial carbonlimitation. 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