Succession of marine epipelagic communities

Vinogradov, M. E.; Shushkina, E. A.

doi:10.3354/meps016229

Cited by 6 publications

(6 citation statements)

References 10 publications

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“…Here we use a unique opportunity to compare our data with the results of the survey conducted along the same transect 17 years before our survey in the summer of 1992/1993 (Froneman et al, 2000; Pakhomov et al., 2000). Due to different units (dry weight in 1993 and wet weight in 2009), biomass values diverge but general trends merit comparison because the transition coefficients (wet → dry weight) for the taxa dominating in both surveys are similar (Vinogradov & Shushkina, 1987). In 1993, copepods dominated in mesoplankton, contributing 30%–50% of the total biomass, and were followed by euphausiids (30% or less) and chaetognaths (10% or less).…”

Section: Discussionmentioning

confidence: 99%

“…On the basis of this primary dataset, the individual weights and integrated biomass were calculated. Wet weight w tot (ww) of taxa was estimated as

w = \sum false(k \times l_{i}^{3} false)

, where l i is length of an individual specimen, k is a species‐dependent coefficient; tables of these coefficients were published elsewhere (e.g., Chislenko, 1968; Vinogradov & Shushkina, 1987).…”

Section: Methodsmentioning

confidence: 99%

“…, where l i is length of an individual specimen, k is a species-dependent coefficient; tables of these coefficients were published elsewhere (e.g., Chislenko, 1968;Vinogradov & Shushkina, 1987).…”

Section: Calculations Of Biomass and Standing Stockmentioning

confidence: 99%

“…Assuming that the layer 0-300 m contributes 69% to the biomass in the layer 0-1,500 m, in Section 4.3 we estimated the total mesoplankton standing stock as 1.71-2.93 Gt (ww). Assuming that the conversion coefficient wet weight → carbon weight for Subantarctic copepods and chaetognaths dominating in our samples is 0.05 (Vinogradov & Shushkina, 1987), we get the total mesoplankton carbon biomass 0.09-0.15 Gt C.…”

Section: Total Mesoplankton Standing Stocks In the Southern Oceanmentioning

confidence: 99%

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Surface chlorophyll concentration as a mesoplankton biomass assessment tool in the Southern Ocean region

Vereshchaka

Lunina

Mikaelyan

2021

Global Ecol Biogeogr

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Aim Mesoplankton of the Southern Ocean is the key trophic link between phytoplankton and other consumers and an important part of the biological carbon pump, a critical component of climate regulation. Although general patterns of mesoplankton distribution and life cycles are known, we still cannot estimate mesoplankton standing stocks at specified ocean‐basin scales. Location Southern Ocean, 34.4−56.9°S, 0–14.4°E. Time period December 2009. Major taxa studied All mesoplankton 0.2–20.0 mm. Methods We assessed biomass of dominant taxa and total wet mesoplankton biomass (B, mg/m3) using surface chlorophyll a concentration (Chl) as a proxy of phytoplankton biomass and surface temperature (ST), a basic hydrological parameter. We sampled three strata within the layer 0–300 m at 43 stations with a Judey net (0.1 m2, 180 µm). Results We identified 163 taxa and calculated their biomass, biomass of major trophic groups, and total mesoplankton biomass. Monthly Chl and ST derived from satellite imaging were averaged at various temporal and spatial scales. B in the upper layer and in the integrated layer 0–300 m was significantly linked to antecedent Chl signals; the most significant regressions were found between B and monthly Chl and ST averaged two months prior to the survey and 10° upstream of the Antarctic Circumpolar Current. Larger mesoplankton fractions showed longer response periods to Chl signal than smaller fractions. Main conclusions Our results suggest the integral mesoplankton stock is 2.47–3.69 Gt wet weight wtot (ww), or 0.12–0.18 Gt C, in the whole Southern Ocean. Mesoplankton was dominated by omnivores (69%–74%) followed by carnivores (25%) and herbivores (20%), which suggests the leading role of omnivory in the Southern Ocean pelagic during the austral summer. We anticipate that these results will help to provide a deeper insight into the Southern Ocean ecosystems and will benefit models predicting changes in the carbon–climate Earth system.

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Section: Discussionmentioning

confidence: 99%

“…On the basis of this primary dataset, the individual weights and integrated biomass were calculated. Wet weight w tot (ww) of taxa was estimated as

w = \sum false(k \times l_{i}^{3} false)

Section: Methodsmentioning

confidence: 99%

Section: Calculations Of Biomass and Standing Stockmentioning

confidence: 99%

Section: Total Mesoplankton Standing Stocks In the Southern Oceanmentioning

confidence: 99%

See 2 more Smart Citations

Surface chlorophyll concentration as a mesoplankton biomass assessment tool in the Southern Ocean region

Vereshchaka

Lunina

Mikaelyan

2021

Global Ecol Biogeogr

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“…Disturbance events include fluctuations in energy utilisation measurable via total biomass, changes in species composition and structural and functional characteristics of a site (Vinogradov & Shushkina, 1984;Prach & Walker, 2011). The duration of succession from early colonisation in the initiation state to its equilibrial climax community varies across different habitats (Margalef, 1989;Sandin & Sala, 2012) and will play a key role in the development of epifaunal and terrestrial habitats created by AFI installations.…”

Section: Habitat Creationmentioning

confidence: 99%

An Assessment of Artificial Floating Islands as a Method of Habitat Creation in Marine Environments

Jessica¹

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Most megacities are located adjacent to the coast due to the continuous seaward migration of human populations; a process referred to as marine urban sprawl. The subsequent hardening of the natural coastline has caused the loss and degradation of coastal habitats. In order to halt, mitigate and compensate for further losses of biodiversity, it is important that habitat restoration techniques with involve ecological engineering are considered. Artificial floating islands (AFIs) are a habitat creation method used to improve water quality and support biodiversity in aquatic environments. This study aimed to assess the installation of AFIs as a restoration tool in heavily modified coastal water bodies. That included investigating: the suitability of halophytes for transplantation into the AFI matrix; the biofouling communities that establish on the AFIs; the abundance, species richness and behaviour of fish in association with AFIs; the density and behaviour of birds in association with the AFIs; and the public perception of current environmental concerns and therefore, opinion on AFIs as an ecological engineering method. Based on the results of this study sea purslane (Halimione portulacoides) would be recommended for transplantation on AFIs installed in saline environments. The invertebrate community assemblages were notably controlled by the primary settlement of blue mussel (Mytilus edulis) and Australian tubeworm (Ficopomatus enigmaticus). Juvenile phase European sea bass (Dicentrarchus labrax) and gull (Laridae) spp. foraged on the benthic invertebrates that fouled the AFIs underside and European eel (Anguilla Anguilla) rested in the matrix. The public supported the use of AFIs in coastal environments but concerns regarding maintenance and degradation were raised. In conclusion, this study highlighted the importance of AFI size, structure, location and vegetation cover as these factors influence the species composition, degree of isolation and environmental exposure, contributing to the overall success of AFI deployments in heavily modified coastal water bodies.

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The Peruvian Coastal Upwelling System

Tarazona¹,

Arntz²

2001

Ecological Studies

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Succession of marine epipelagic communities

Cited by 6 publications

References 10 publications

Surface chlorophyll concentration as a mesoplankton biomass assessment tool in the Southern Ocean region

Surface chlorophyll concentration as a mesoplankton biomass assessment tool in the Southern Ocean region

An Assessment of Artificial Floating Islands as a Method of Habitat Creation in Marine Environments

The Peruvian Coastal Upwelling System

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