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dc.contributor.author
Meunier, Cédric L.
dc.contributor.author
Liess, Antonia
dc.contributor.author
Andersson, Agneta
dc.contributor.author
Brugel, Sonia
dc.contributor.author
Paczkowska, Joanna Marianna
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dc.contributor.author
Rahman, Habib
dc.contributor.author
Skoglund, Bjorn
dc.contributor.author
Rowe, Owen F.
dc.date.available
2018-04-23T15:39:54Z
dc.date.issued
2017-08
dc.identifier.citation
Meunier, Cédric L.; Liess, Antonia; Andersson, Agneta; Brugel, Sonia; Paczkowska, Joanna Marianna; et al.; Allochthonous carbon is a major driver of the microbial food web – A mesocosm study simulating elevated terrestrial matter runoff; Elsevier; Marine Environmental Research; 129; 8-2017; 236-244
dc.identifier.issn
0141-1136
dc.identifier.uri
http://hdl.handle.net/11336/43011
dc.description.abstract
Climate change predictions indicate that coastal and estuarine environments will receive increased terrestrial runoff via increased river discharge. This discharge transports allochthonous material, containing bioavailable nutrients and light attenuating matter. Since light and nutrients are important drivers of basal production, their relative and absolute availability have important consequences for the base of the aquatic food web, with potential ramifications for higher trophic levels. Here, we investigated the effects of shifts in terrestrial organic matter and light availability on basal producers and their grazers. In twelve Baltic Sea mesocosms, we simulated the effects of increased river runoff alone and in combination. We manipulated light (clear/shade) and carbon (added/not added) in a fully factorial design, with three replicates. We assessed microzooplankton grazing preferences in each treatment to assess whether increased terrestrial organic matter input would: (1) decrease the phytoplankton to bacterial biomass ratio, (2) shift microzooplankton diet from phytoplankton to bacteria, and (3) affect microzooplankton biomass. We found that carbon addition, but not reduced light levels per se resulted in lower phytoplankton to bacteria biomass ratios. Microzooplankton generally showed a strong feeding preference for phytoplankton over bacteria, but, in carbon-amended mesocosms which favored bacteria, microzooplankton shifted their diet towards bacteria. Furthermore, low total prey availability corresponded with low microzooplankton biomass and the highest bacteria/phytoplankton ratio. Overall our results suggest that in shallow coastal waters, modified with allochthonous matter from river discharge, light attenuation may be inconsequential for the basal producer balance, whereas increased allochthonous carbon, especially if readily bioavailable, favors bacteria over phytoplankton. We conclude that climate change induced shifts at the base of the food web may alter energy mobilization to and the biomass of microzooplankton grazers.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Bacteria
dc.subject
Competition
dc.subject
Food Quality
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Microzooplankton
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Phytoplankton
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Trophic Interactions
dc.subject.classification
Otras Ciencias Biológicas
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Allochthonous carbon is a major driver of the microbial food web – A mesocosm study simulating elevated terrestrial matter runoff
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-04-05T18:24:39Z
dc.journal.volume
129
dc.journal.pagination
236-244
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Meunier, Cédric L.. Universidad de Umea; Suecia
dc.description.fil
Fil: Liess, Antonia. Universidad de Umea; Suecia. Halmstad University; Suecia
dc.description.fil
Fil: Andersson, Agneta. Universidad de Umea; Suecia. Umea Marine Sciences Centre; Suecia
dc.description.fil
Fil: Brugel, Sonia. Universidad de Umea; Suecia. Umea Marine Sciences Centre; Suecia
dc.description.fil
Fil: Paczkowska, Joanna Marianna. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Umea; Suecia. Umea Marine Sciences Centre; Suecia
dc.description.fil
Fil: Rahman, Habib. Universidad de Umea; Suecia
dc.description.fil
Fil: Skoglund, Bjorn. Universidad de Umea; Suecia
dc.description.fil
Fil: Rowe, Owen F.. Universidad de Umea; Suecia. Umea Marine Sciences Centre; Suecia
dc.journal.title
Marine Environmental Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.marenvres.2017.06.008
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S014111361730051X
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