Distribution and Demography of Antarctic Krill and Salps in the Atlantic Sector of the Southern Ocean during Austral Summer 2021–2022

The study aimed to investigate krill (Euphausia superba) and salp (Salpa thompsoni) populations in the Atlantic sector of the Southern Ocean in January and February 2022. Samples were obtained to measure the abundance, biomass and distribution patterns of krill and salp. Sex differences and feeding habits of the Antarctic krill were determined. The dependence of the physiological state of the studied aquatic organisms on changes in environmental parameters was analyzed. Current data on the association of the dynamics of hydrometeorological parameters and processes with the distribution of chlorophyll a, krill, and salp were obtained. It was established that, at numerous stations, the biomass of salps prevailed over krill. The result indicates the replacement of the Antarctic krill populations by gelatinous zooplankton. The obtained results allow assessment of the biological resource potential in the studied region based on the analysis of the samples collected.

• Publication year

  2022

• Venue

  Water

• Publication date

  2022-11-23

• Fields of study

  Not labeled

• Identifiers
  DOI 10.3390/w14233812
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

• Composition and Distribution of Plankton Communities in the Atlantic Sector of the Southern Ocean

  2022cited by this paper
• OC4-SO: A New Chlorophyll-a Algorithm for the Western Antarctic Peninsula Using Multi-Sensor Satellite Data

  2022cited by this paper
• Oceanographic and Ecosystem Studies in the Atlantic Sector of Antarctica (Cruise 87 of the Research Vessel Akademik Mstislav Keldysh)

  2022cited by this paper
• Global ecological and biogeochemical impacts of pelagic tunicates

  2022cited by this paper
• Status, Change, and Futures of Zooplankton in the Southern Ocean

  2022cited by this paper
• Peculiarities of Water Circulation in the Central Part of the Bransfield Strait in January 2020

  2021cited by this paper
• Population demographics and growth rate of Salpa thompsoni on the Kerguelen Plateau

  2021cited by this paper
• Antarctic Peninsula Region of the Southern Ocean: Oceanography and Ecology

  2021cited by this paper
• Catch Pattern for Antarctic krill (Euphausia superba) of Different Commercial Trawls in Similar Times and Overlapping Fishing Grounds

  2021cited by this paper
• Biology of Salpa thompsoni at the Chatham Rise, New Zealand: demography, growth, and diel vertical migration

  2020cited by this paper
• Blooms of a key grazer in the Southern Ocean – An individual-based model of Salpa thompsoni

  2020cited by this paper
• Composition of population and transport of juveniles of Antarctic krill in Powell Basin region (northwestern Weddell Sea) in January 2020

  2020cited by this paper
• Habitat partitioning in Antarctic krill: Spawning hotspots and nursery areas

  2019cited by this paper
• Krill (Euphausia superba) distribution contracts southward during rapid regional warming

  2019cited by this paper
• Phytoplankton community structure in contrasting ecosystems of the Southern Ocean: South Georgia, South Orkneys and western Antarctic Peninsula

  2019cited by this paper
• Evaluation of satellite-derived MODIS chlorophyll algorithms in the northern Antarctic Peninsula

  2017cited by this paper
• Trans-Atlantic variability in ecology of the pelagic tunicate Salpa thompsoni near the Antarctic Polar Front

  2017cited by this paper
• On the ventilation of Bransfield Strait deep basins

  2017cited by this paper
• Biology and Ecology of Antarctic Krill

  2016cited by this paper
• Environmental information for a marine ecosystem research approach for the northern Antarctic Peninsula (RV Polarstern expedition PS81, ANT-XXIX/3)

  2016cited by this paper
• Water masses in the Bransfield Strait and adjacent seas, austral summer 2013

  2016cited by this paper
• Contrasting the early life histories of sympatric Arctic gadids Boreogadus saida and Arctogadus glacialis in the Canadian Beaufort Sea

  2016cited by this paper
• Rethinking the Role of Salps in the Ocean.

  2016cited by this paper
• KRILLBASE: a circumpolar database of Antarctic krill and salp numerical densities, 1926–2016

  2016cited by this paper
• Record of the rare oceanic salp Helicosalpa komaii (Tunicata: Thaliacea: Salpida) in the Northeast Pacific

  2014cited by this paper
• Climate change and Southern Ocean ecosystems I: how changes in physical habitats directly affect marine biota

  2014cited by this paper
• Size Selection of Antarctic Krill (Euphausia superba) in Trawls

  2014cited by this paper
• Changes in the C, N, and P cycles by the predicted salps-krill shift in the southern ocean

  2014cited by this paper
• Trends, cycles, interannual variability for three pelagic species west of the Antarctic Peninsula 1993-2008

  2014cited by this paper
• A mobile complex for on-line studying water areas and surface atmosphere

  2014cited by this paper
• Dynamics of phytoplankton communities during late summer around the tip of the Antarctic Peninsula

  2012cited by this paper
• Increasing jellyfish populations: trends in Large Marine Ecosystems

  2012cited by this paper
• Impact of climate change on Antarctic krill

  2012cited by this paper
• Population dynamics of Salpa thompsoni near the Antarctic Peninsula: Growth rates and interannual variations in reproductive activity (1993–2009)

  2012cited by this paper
• The Southern Ocean Observing System

  2012cited by this paper
• Chlorophyll aalgorithms for oligotrophic oceans: A novel approach based on three‐band reflectance difference

  2012cited by this paper
• Three‐dimensional structure of a swarm of the salp Thalia democratica within a cold‐core eddy off southeast Australia

  2011cited by this paper
• Estimating the density of Antarctic krill (Euphausia superba) from multi‐beam echo‐sounder observations using distance sampling methods

  2011cited by this paper
• Biology and life cycles of pelagic tunicates in the Lazarev Sea, Southern Ocean

  2011cited by this paper
• Composition of deepsea pelagic ichthyocenes of the Southern Atlantic, from waters of the range of the Mid-Atlantic and Walvis Ridges

  2010cited by this paper
• Seasonal variation in body composition, metabolic activity, feeding, and growth of adult krill Euphausia superba in the Lazarev Sea

  2010cited by this paper
• A re-appraisal of the total biomass and annual production of Antarctic krill

  2009cited by this paper
• Oceanic circumpolar habitats of Antarctic krill

  2008cited by this paper
• Temperature-dependent growth of Antarctic krill: predictions for a changing climate from a cohort model

  2008cited by this paper
• Spatial and temporal operation of the Scotia Sea ecosystem: a review of large-scale links in a krill centred food web

  2007cited by this paper
• Recruitment of Antarctic krill Euphausia superba in the South Georgia region: adult fecundity and the fate of larvae

  2007cited by this paper
• The tunicate Salpa thompsoni ecology in the Southern Ocean. I. Distribution, biomass, demography and feeding ecophysiology

  2006cited by this paper
• Natural growth rates in Antarctic krill (Euphausia superba): II. Predictive models based on food, temperature, body length, sex, and maturity stage

  2006cited by this paper
• Krill demography and large-scale distribution in the southwest Atlantic during January/February 2000

  2004cited by this paper
• On the fate of the Antarctic Slope Front and the origin of the Weddell Front

  2004cited by this paper
• Long-term decline in krill stock and increase in salps within the Southern Ocean

  2004cited by this paper
• Efficient Inverse Modeling of Barotropic Ocean Tides

  2002cited by this paper
• Salp/krill interactions in the Southern Ocean:spatial segregation and implications for the carbon flux

  2002cited by this paper
• Deep Velocity Profiling Using Lowered Acoustic Doppler Current Profilers: Bottom Track and Inverse Solutions*

  2002cited by this paper
• Antarctic Phytoplankton Assemblages in the Marginal Ice Zone of the Northwestern Weddell Sea

  2001cited by this paper
• The endostyle and the feeding filter in salps (Tunicata)

  2000cited by this paper
• Effects of sea-ice extent and krill or salp dominance on the Antarctic food web

  1997cited by this paper
• On the circulation and stratification of the Weddell Gyre

  1993cited by this paper
• An assessment of the merits of length and weight measurements of Antarctic krill Euphausia superba

  1988cited by this paper
• Classification of water masses in the Bransfield Strait and southern part of the Drake Passage using a method of statistical multidimensional analysis

  1987cited by this paper
• The Ecology of the Southern Ocean

  1985cited by this paper
• Nocturnal changes in the mean length of a euphausiid population: vertical migration, net avoidance, or experimental error?

  1985cited by this paper
• Individual growth rates of salps in three populations

  1984cited by this paper
• The natural history and geography of the Antarctic krill (Euphausia superba Dana)

  1961cited by this paper
• On the development and distribution of the young stages of Krill (Euphausia superba)

  1936cited by this paper
• Digital Commons @ University of Digital Commons @ University of South Florida South Florida

  year unknowncited by this paper

• At-Sea Distribution of Seabirds and Marine Mammals in the Unexplored Southern Weddell Sea, Antarctica

  2026cites this paper
• Population Status of Sympatrically Breeding Skuas (Catharacta spp.) at Admiralty Bay, King George Island, Antarctica: A Case Report for 2020–2024

  2025cites this paper
• Diet composition and trophic ecology of two Antarctic storm-petrel species.

  2025cites this paper
• Extreme underestimation of satellite-derived chlorophyll-a concentration in the northwestern Weddell Sea during a phytoplankton bloom and its reasons

  2025cites this paper
• Fatty Acid Content and Lipid Nutritional Indexes in the Antarctic Krill Euphausia superba Collected from Three Regions of the Atlantic Sector of Antarctica

  2024cites this paper
• The content of fatty acids and nutritional indexes of lipids of the Antarctic krill Euphausia superba collected from three regions of the Atlantic sector of Antarctic

  2024cites this paper
• Modeling of the Distribution and Relationship with Abiotic Environmental Factors of Juvenile and Adult Antarctic Krill Euphausia superba Based on Actual Hydrophysical Measurements

  2023cites this paper
• Holopelagic Annelida from the Atlantic sector of the Southern Ocean and adjacent South Atlantic with descriptions of three new species

  2023cites this paper
• Comparative Analysis of the Fatty Acid Profiles of Antarctic Krill (Euphausia superba Dana, 1850) in the Atlantic Sector of the Southern Ocean: Certain Fatty Acids Reflect the Oceanographic and Trophic Conditions of the Habitat

  2023cites this paper
• Recent Changes in Composition and Distribution Patterns of Summer Mesozooplankton off the Western Antarctic Peninsula

  2023cites this paper
• Research in the Atlantic Sector of the Southern Ocean and Propagation of Antarctic Bottom Water in the Atlantic

  2023cites this paper
• Vertical distribution of pelagic polychaetes in the Bransfield Strait and northwestern Weddell Sea in austral summer of 2022

  2023cites this paper
• Occurrence and Distribution of Fin Whales (Balaenoptera physalus) and Humpback Whales (Megaptera novaeangliae) in the Atlantic Sector of Antarctica

  2023cites this paper
• Structure and Spatial Distribution of Mesozooplankton Communities in the Atlantic Sector of the Southern Ocean

  2023cites this paper
• Current Assessment of Water Quality and Biota Characteristics of the Pelagic Ecosystem of the Atlantic Sector of Antarctica: The Multidisciplinary Studies by the Institute of Biology of the Southern Seas

  2022cites this paper