High diversity and isolated distribution of aquatic heterotrophic protists in salars of the Atacama Desert at different salinities

Rybarski, Alexandra; Nitsche, Frank; Schoenle, Alexandra; Voigt, Claudia; Staubwasser, Michael; Arndt, Hartmut

doi:10.1016/j.ejop.2023.125987

Cited by 5 publications

(2 citation statements)

References 42 publications

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“…3C). This is consistent with previous findings that Wobblia can both degrade non-biological particles in shrimp aquaculture water (such as bait feces, shrimp scraps, and various organic substances) and utilize ammonia to synthesize the proteins required for its autotrophic metabolism (Lennartz née Rybarski et al 2023). The predominance of Aspidisca in shrimp feeding water supplemented with Nannochloropsis may be attributed to the symbiotic compatibility of Nannochloropsis with certain protozoan and fungal phyla in the environment, resulting in a complex network of relationships (Kazimierowicz et al 2023).…”

Section: Patterns and Driving Factors Of Eukaryotic Plankton Communit...supporting

confidence: 91%

Inoculation of microalgae distinctly shapes the structure and enhances the stability of eukaryotic plankton community in shrimp rearing water

Xiang,

Lian,

Cai

et al. 2024

Preprint

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Inoculating microalgae has been verified to have the potential to improve the microenvironment of shrimp rearing water and modulate bacterial communities. However, the impact of this intervention on the water eukaryotic plankton community remains relatively unexplored. In this study, we inoculated two indigenous microalgae, Nannochloropsis oculata and Thalassiosira weissflogii, into shrimp rearing water to elucidate the dynamics and interactions among microalgae, nutrient factors, and the small-sized (0.22-3 μm) and large-sized (3-200 μm) eukaryotic plankton community. Our findings demonstrated significant differences in the composition and diversity the small-sized (0.22-3 μm) and large-sized (3-200 μm) eukaryotic plankton community under various microalgae treatments. PERMANOVA (permutational multivariate analysis of variance) revealed significant differences among treatments in terms of rearing time and Size fraction. Moreover, partial least squares path modeling (PLS-PM) analysis showed that microalgae and nitrite could directly affect the small-sized community or indirectly affect them through trophic interactions. According to the neutral community model, inoculation of microalgae amplifies the relative contribution of deterministic processes in community assembly. Furthermore, the average variation degree (AVD) index analysis results indicated that the inoculation of N. oculata was particularly effective in enhancing community stability. These results indicate the importance of microalgae in shaping the structure and stability of eukaryotic plankton communities in shrimp rearing water, which holds great promise for the understanding and development of technologies aimed at improving the quality of rearing water, thereby contributing to more successful shrimp cultivation practices.

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Section: Patterns and Driving Factors Of Eukaryotic Plankton Communit...supporting

confidence: 91%

Inoculation of microalgae distinctly shapes the structure and enhances the stability of eukaryotic plankton community in shrimp rearing water

Xiang,

Lian,

Cai

et al. 2024

Preprint

View full text Add to dashboard Cite

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“…The PCR products of the mock community were then pooled (20 ng of DNA per strain) and added to each Illumina library as a supplementary sample. The same mock community is used in our working group to enable comparative studies [ 25 ]. Paired-end NovaSeq sequencing (2 × 150 bp) of amplified fragments was performed by the Cologne Center for Genomics (CCG) of the University of Cologne.…”

Section: Methodsmentioning

confidence: 99%

Distribution Patterns of Benthic Protist Communities Depending on Depth Revealed by Environmental Sequencing—From the Sublittoral to the Deep Sea

Hohlfeld

Arndt

2023

Microorganisms

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Protists are key components of the microbial food web in marine pelagic systems because they link algal and bacterial production to higher trophic levels. However, their functioning and bathymetric distribution in benthic deep-sea ecosystems are still only poorly understood. However, biogeographical patterns of communities can be coupled to the functioning of ecosystems and are therefore important to understand ecological and evolutionary processes. In this study, we investigated the diversity and distribution of benthic protist communities from the sublittoral down to the deep seafloor (50–2000 m) around three islands of the Azores in the North Atlantic Ocean. Using amplicon sequencing of the V9 region (18S rDNA) of 21 samples, we found that protist community compositions from different depths were significantly different. Three assemblages were separated along the following depths: 50 m, 150–500 m and 1000–2000 m, which indicate that deep-sea areas surrounding islands might act as isolating barriers for benthic protist species. A limited gene flow between the communities could favor speciation processes, leading to the unique protist communities found at the different investigated islands.

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Taxonomic and functional diversity of protists in saline and hypersaline lakes in southern Western Siberia, a region strongly affected by climate change

Gerasimova,

Balkin,

Kataev

et al. 2024

Water Biology and Security

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High diversity and isolated distribution of aquatic heterotrophic protists in salars of the Atacama Desert at different salinities

Cited by 5 publications

References 42 publications

Inoculation of microalgae distinctly shapes the structure and enhances the stability of eukaryotic plankton community in shrimp rearing water

Inoculation of microalgae distinctly shapes the structure and enhances the stability of eukaryotic plankton community in shrimp rearing water

Distribution Patterns of Benthic Protist Communities Depending on Depth Revealed by Environmental Sequencing—From the Sublittoral to the Deep Sea

Taxonomic and functional diversity of protists in saline and hypersaline lakes in southern Western Siberia, a region strongly affected by climate change

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