Three‐dimensional distribution of mesoplankton assemblages in the Central Atlantic

Vedenin, Andrey; Musaeva, Eteri I; Vereshchaka, Alexander L.; Waring, Bonnie G.

doi:10.1111/geb.13509

Cited by 4 publications

(2 citation statements)

References 89 publications

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“…In particular, Supplementary S1 encompasses total biomass, SST , Chl and sampling gear data for the samples collected in 1950–2016 (the whole analysed time span). Due to heterogeneity of data sources for the samples collected before 2012, information on individual taxa is not available for this period; data on taxa sampled in 2012–2016 may be found in Vedenin et al (2022).…”

Section: Data Availability Statementmentioning

confidence: 99%

A mesoplankton biomass decline in the Central Atlantic coupled with an increase of surface temperature and an expansion of low‐productive zones

Vereshchaka

Mikaelyan

Piontkovski

et al. 2023

Global Ecol Biogeogr

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Aim Climate‐driven trends in environmental processes and their effect on marine ecosystems remain poorly understood despite an obvious decrease in marine biological resources which undergo changes in stock size mediated by phyto‐ and mesoplankton. A mesoplankton multiannual dataset is one of the best tools to elucidate general trends in marine ecosystems. Location Oligo‐ and mesotrophic waters of the Central Atlantic. Time Period 1950–2016. Major Taxa Studied Chaetognatha, Cnidaria, Crustacea, Mollusca. Methods Wet mesoplankton biomass (B) values were estimated in 1159 mesoplankton (animals 0.5–30.0 mm long) samples collected in the open ocean epipelagic (0–200 m) in 1950–2016. We ran Generalized Linear Mixed Models and analysed general trends in B, in satellite‐derived surface chlorophyll (Chl, as a proxy of phytoplankton biomass in 1998–2015), and surface temperature (SST, NCEP/NCAR reanalysis, 1948–2015). We further compared the multiannual trends in B, SST, Chl and in space of the oligotrophic and mesotrophic Chl contours in selected regions and in the whole Central Atlantic. Results We showed a statistically significant decline of B within the whole Central Atlantic (9‐fold during 1950–2016) and within each of the three selected regions. These trends were always coupled with other statistically significant effects: increase of SST, decline of Chl, expansion of Chl‐depleted areas and shrinkage of Chl‐enriched areas. Main Conclusions The results unveil the following causal relationship in the Central Atlantic: SST increase → strengthening of stratification → Chl decline—expansion of low‐productive areas → B decrease, which, along with existing prognostic climate models, suggests future mesoplankton decline in the Central Tropical Atlantic. The decline in Chl and B is expected to amplify decrease of higher trophic levels biomass and thus to result in changes in the marine food webs. Observed changes in biomass and production will imply direct repercussions for world fisheries and other services provided by Ocean.

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Section: Data Availability Statementmentioning

confidence: 99%

A mesoplankton biomass decline in the Central Atlantic coupled with an increase of surface temperature and an expansion of low‐productive zones

Vereshchaka

Mikaelyan

Piontkovski

et al. 2023

Global Ecol Biogeogr

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“…More and more researchers have realised the importance of investigating the vertical distribution of plankton species, like in the central Atlantic Ocean where four mesozooplankton groups were vertically distinguished (Vedenin et al, 2022). Preliminary studies have also shown that Tintinnina can be vertically distributed according to different groups (Wang et al, 2020;Wang et al, 2021).…”

Section: Tropical Submergence Of Transition Zone Speciesmentioning

confidence: 99%

Organization of planktonic Tintinnina assemblages in the Atlantic Ocean

Tarran²,

Dall’Olmo³

et al. 2023

Front. Mar. Sci.

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Marine plankton have different biogeographical distribution patterns. However, it is not clear how the entire plankton assemblage is composed of these species with distinct biogeographical patterns. Tintinnina (tintinnids) is single-celled planktonic protozoa commonly used as model organisms in planktonic studies. In this research, we investigated the organization of Tintinnina assemblages along the Atlantic Meridional Transect (AMT) spanning over 90 degrees of latitude during the 29th AMT cruise (2019). Tintinnina with high frequency of occurrence was classified into four biogeographic distribution patterns (equatorial, gyre, frontal, and deep Chl a maximum) according to their vertical and horizontal distribution. All species falling within each distribution pattern formed a sub-assemblage. Equatorial sub-assemblage dominated in upper waters of the equatorial zone and gyre centres. Equatorial and frontal sub-assemblages co-dominated in upper waters of the frontal zones. Deep Chlorophyll a maximum Layer (DCM) sub-assemblage dominated in the DCM waters. Some Tintinnina species with high abundance could be used as indicator species of sub-assemblages. The Tintinnina assemblages in the northern and southern hemispheres exhibited asymmetry in terms of species composition. The latitudinal gradient of Tintinnina species richness was bimodal, which was shaped by the superposition of the species number of the four sub-assemblages with latitude. The result of this study contributes to the understanding of Tintinnina assemblage in the equatorial zone and subtropical gyres of the Pacific and Indian Ocean. It is also valuable for predicting the influence of global warming on changes in Tintinnina distribution and species richness.

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Precision of mesoplankton sampling: A case study based on three net series in the South Atlantic and in the Black Sea

Vereshchaka

Anokhina

Kulagin

et al. 2023

Marine Environmental Research

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Three‐dimensional distribution of mesoplankton assemblages in the Central Atlantic

Cited by 4 publications

References 89 publications

A mesoplankton biomass decline in the Central Atlantic coupled with an increase of surface temperature and an expansion of low‐productive zones

A mesoplankton biomass decline in the Central Atlantic coupled with an increase of surface temperature and an expansion of low‐productive zones

Organization of planktonic Tintinnina assemblages in the Atlantic Ocean

Precision of mesoplankton sampling: A case study based on three net series in the South Atlantic and in the Black Sea

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