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Data from: Rehabilitating the cyanobacteria – niche partitioning, resource use efficiency, and phytoplankton community structure during diazotrophic cyanobacterial blooms
Olli, Kalle; Klais, Riina; Tamminen, Timo (2016), Data from: Rehabilitating the cyanobacteria – niche partitioning, resource use efficiency, and phytoplankton community structure during diazotrophic cyanobacterial blooms, Dryad, Dataset,

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Beschikbaarheid: CC0 Voor zover mogelijk onder de wet, heeft de persoon, die CC0 toegekend heeft aan deze dataset, afstand gedaan van alle auteurs- en aanverwante rechten.

1. Blooms of nitrogen-fixing cyanobacteria are recurrent phenomena in marine and freshwater habitats, and their supplying role in aquatic biogeochemical cycles is generally considered vital. The objective of this study is to analyze if an increasing proportion of nitrogen-fixing cyanobacteria affects (i) the composition of the non-diazotrophic component of ambient phytoplankton communities, and (ii) resource use efficiency (RUE; ratio of chl a to total nutrients) – an important ecosystem function. meer

We hypothesize that diazotrophs increase community P use, and decrease N use efficiencies, as new N is brought into the system, relaxing N, and concomitantly aggravating P limitation. We test this by analyzing an extensive dataset from the Baltic Sea (> 3700 quantitative phytoplankton samples), known to harbor conspicuous and recurrent blooms of Nodularia spumigena and Aphanizomenon sp. 2. System-level phosphorus use efficiency (RUEP) was positively related with high proportion of diazotrophic cyanobacteria, suggesting aggravation of phosphorus limitation. However, concomitant decrease of nitrogen use efficiency (RUEN) was not observed. Nodularia spumigena, a dominant diazotroph and a notorious toxin producer, had a significantly stronger relationship with RUEP, compared to the competing non-toxic Aphanizomenon sp., confirming niche differentiation in P acquisition strategies between the major bloom-forming cyanobacterial species in the Baltic Sea. Nodularia occurrences were associated with stronger temperature stratification in more offshore environments, indicating higher reliance on in situ P regeneration. 3. By using constrained and unconstrained ordination, permutational multivariate analysis of variance, and local similarity analysis, we show that diazotrophic cyanobacteria explained no more than a few percent of the ambient phytoplankton community variation. The analyses furthermore yielded rather evenly distributed negative and positive effects on individual co-occurring phytoplankton taxa, with no obvious phylogenetic or functional trait-based patterns. 4. Synthesis. Our study reveals that despite the widely acknowledged noxious impacts of cyanobacterial blooms, the overall effect on phytoplankton community structure is minor. There are no predominantly positive or negative associations with ambient phytoplankton species. Species-specific niche differences in cyanobacterial resource acquisition affect important ecosystem functions, like biomass production per unit limiting resource.

Biologie > Plankton > Fytoplankton
Marien/Kust, Brak water, Aphanizomenon, Limiting nutrients, Nitrogen fixation, Nodularia, ANE, Baltic, EurOBIS calculated BBOX, Bacillariophyceae, Cryptophyceae, Cyanophyceae, Dinophyceae

Geografische spreiding
ANE, Baltic [Marine Regions]
EurOBIS calculated BBOX Stations
Bounding Box
Coördinaten: MinLong: 12,387; MinLat: 53,671 - MaxLong: 29,73; MaxLat: 60,57 [WGS84]

Spreiding in de tijd
1966 - 2008

Taxonomic coverage
Bacillariophyceae [WoRMS]
Cryptophyceae [WoRMS]
Cyanophyceae [WoRMS]
Dinophyceae [WoRMS]

Bijdrage door
Finnish Environment Institute (FEI/SYKE), meerdata creator
University of Tartu (UTEE), meerdata creator

Gerelateerde datasets
Gepubliceerd in:
EurOBIS: European Ocean Biodiversity Information System, meer

Dataset status: Afgelopen
Data type: Data
Data oorsprong: Onderzoek: veldonderzoek
Metadatarecord aangemaakt: 2022-07-19
Informatie laatst gewijzigd: 2022-07-19
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