Temporal variability of diversity and biomass of tintinnids (Ciliophora) in a southwestern Atlantic temperate estuary

Cao, María Sonia Barría de; Beigt, Débora; Piccolo, C.

doi:10.1093/plankt/fbi077

Cited by 33 publications

(4 citation statements)

References 21 publications

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“…The range of abundance and mean biovolume by taxa were also similar to those observed in the region (e.g., for loricate ciliates: at 38°S, Barría de Cao et al, 2005;and at 23°S, Eskinazi-Sant'Anna and Björnberg, 2006). Abundance and biovolume were mostly dominated by thecate dinoflagellates, with maxima in autumn and considerable relative contribution of HD in winter.…”

Section: Microzooplankton Abundance and Community Structuresupporting

confidence: 78%

“…The absolute abundance of microzooplankton (total [mean; SD]: 1.8 × 10 5 [245; 740] indL −1 ) at the study site was in agreement with the reports for the coastal areas of the SWA in Brazil (Gonçalves-Araujo et al ., 2012; Menezes et al ., 2019) and Argentina (Antacli et al ., 2018; Santoferrara and Alder, 2009). The range of abundance and mean biovolume by taxa were also similar to those observed in the region (e.g., for loricate ciliates: at 38°S, Barría de Cao et al ., 2005; and at 23°S, Eskinazi-Sant'Anna and Björnberg, 2006). Abundance and biovolume were mostly dominated by thecate dinoflagellates, with maxima in autumn and considerable relative contribution of HD in winter.…”

Section: Discussionmentioning

confidence: 97%

“…Such studies suggested that water masses dramatically influence trophic dynamics by favouring the development of distinct plankton assemblages that may impact the top-down control of microzooplankton communities. Knowledge of regional microzooplankton derives from investigations further south in Argentinean waters (Thompson et al, 1999;Thompson and Alder, 2005;Santoferrara and Alder, 2009), including the Patagonian shelf (Antacli et al, 2018), the Beagle Channel (Barría de Cao et al, 2013) and the Bahía Blanca estuary (Barría de Cao et al, 2005Cao et al, , 2011Pettigrosso and Popovich, 2009;López-Abbate et al, 2015. Further observations are available for Brazilian coastal and shelf waters (Eskinazi-Sant' Anna and Björnberg, 2006;Islabão and Odebrecht, 2011;Gonçalves-Araujo et al, 2018;Menezes et al, 2019), and Patos Lagoon estuary (Jesus and Odebrecht, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Microzooplankton community structure in a subtropical South-West Atlantic coastal site

2023

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The microzooplankton community structure (species abundance, biomass, diversity) was investigated at a coastal marine station on the South-West Atlantic Ocean (34°23′S–53°45′W, Uruguay). This is a hydrographically complex site within the Subtropical Convergence zone of the SW Atlantic where knowledge of the microzooplankton is particularly scant. The main goal was to perform a first characterization of that community and evaluate its association to environmental drivers along an annual cycle. Oceanographic variables (temperature, salinity, irradiance, nutrients, chlorophyll-a) and ciliates (aloricate and loricate), and dinoflagellates were recorded monthly from July 2019 to June 2020. Over 100 microzooplankton taxa belonging to approximately 30 families and 40 genera were identified, including several subtropical and subantarctic species. Community structure followed wide transitions at the seasonal scale – particularly between summer and winter as subtropical taxa alternated with euryhaline taxa from colder subantarctic waters. The core environmental variables (temperature, salinity and dissolved inorganic nitrogen [DIN]) explained overall variance in microzooplankton community assembly. During summer, high temperatures (20.3, 16.3–22.4°C) and low nutrients (DIN: 3.5, 0.7–6.7 μM; PO4: 1.0, 0.8–1.5 μM) benefited the development of aloricate ciliates. A nutrient pulse in winter posed favourable stoichiometric conditions and the numerical abundance was dominated by dinoflagellates and loricate ciliates in the following months, while diversity remained highest (taxonomic richness: 36 [22–46]; Shannon–Wiener index: 2.5 [1.9–2.8]). Results suggested that the microzooplankton community at the study site is mainly structured by hydrographic variability linked to the seasonal replacement of offshore water masses that differed in thermohaline properties and nutrient levels, and local processes.

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Section: Microzooplankton Abundance and Community Structuresupporting

confidence: 78%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Microzooplankton community structure in a subtropical South-West Atlantic coastal site

2023

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“…Ecological habitat is classified as F = freshwater (≤0.5‰), L = low-brackish (0.5–18‰), H =high-brackish (18–30‰), and M = marine (30–40‰). References [ 66 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 , 107 , 108 , 109 , 110 , 111 , 112 , 113 , 114 , 115 , 116 ...…”

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confidence: 99%

Diversity Patterns of Protists Are Highly Affected by Methods Disentangling Biological Variants: A Case Study in Oligotrich (s.l.) Ciliates

Han

et al. 2022

Microorganisms

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Protists are a dominant group in marine microplankton communities and play important roles in energy flux and nutrient cycling in marine ecosystems. Environmental sequences produced by high-throughput sequencing (HTS) methods are increasingly used for inferring the diversity and distribution patterns of protists. However, studies testing whether methods disentangling biological variants affect the diversity and distribution patterns of protists using field samples are insufficient. Oligotrich (s.l.) ciliates are one group of the abundant and dominant planktonic protists in coastal waters and open oceans. Using oligotrich (s.l.) ciliates in field samples as an example, the present study indicates that DADA2 performs better than SWARM, UNOISE, UPARSE, and UCLUST for inferring diversity patterns of oligotrich (s.l.) ciliates in the Pearl River Estuary and surrounding regions. UPARSE and UNOISE might underestimate species richness. SWARM might not be suitable for the resolution of alpha diversity owing to its rigorous clustering and sensitivity to sequence variations. UCLUST with 99% clustering threshold overestimates species richness, and the beta diversity pattern inferred by DADA2 is more reasonable than that of the other methods. Additionally, salinity is shown to be one of the key factors responsible for variations in the community distribution of ciliates, but infrequent marine–freshwater transitions occurred during evolutionary terms of this group.

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References

2012

The Biology and Ecology of Tintinnid Ciliates

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Temporal variability of diversity and biomass of tintinnids (Ciliophora) in a southwestern Atlantic temperate estuary

Cited by 33 publications

References 21 publications

Microzooplankton community structure in a subtropical South-West Atlantic coastal site

Microzooplankton community structure in a subtropical South-West Atlantic coastal site

Diversity Patterns of Protists Are Highly Affected by Methods Disentangling Biological Variants: A Case Study in Oligotrich (s.l.) Ciliates

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