Vertical distribution, standing stocks, and taxonomic accounts of the entire plankton community, and the estimation of vertical material flux via faecal pellets in the southern Okhotsk Sea

Kojima, Daiki; Hamao, Yusuke; Amei, Kanako; Fukai, Yutaka; Matsuno, Kohei; Mitani, Yoko; Yamaguchi, Atsushi

doi:10.1016/j.dsr.2022.103771

Cited by 3 publications

(1 citation statement)

References 67 publications

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“…Sediment traps were used to estimate the vertical flux of particles, including phytoplankton, metazooplankton fecal pellets, and detritus. This technique was performed by several authors (Laurenceau-Cornec et al 2015;Xiang et al 2022;Kojima et al 2022) because it is very useful for estimating the particle sinking and gives details in the composition of the sinking fluxes. At each station, two sediment traps (63 cm high, 9 cm internal diameter) were incubated vertically two meters from the bottom.…”

Section: Vertical Carbon Fluxesmentioning

confidence: 99%

Influence of Nutrient Gradient on Phytoplankton Size Structure, Primary Production and Carbon Transfer Pathway in a Highly Productive Area (SE Mediterranean)

et al. 2023

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We assessed the spatial variability in the size structure of phytoplankton, community composition, primary production and carbon fluxes through the planktonic food web of the Gulf of Gabès (GG; Southeastern Mediterranean Sea) in the fall of 2017 during the MERMEX-MERITE cruise. High concentrations in nutrients, chlorophyll a (2-6 µg L -1 ) and primary production (1816-3674 mg C m -2 d -1 ) revealed an eutrophic status of the studied stations in the GG. In accordance with hydrodynamic features, inorganic nutrients showed increases in concentrations from North to South and from coast to offshore, these nutrient gradients impacting the spatial distribution of phytoplankton community. Size-fractioned phytoplankton biomass and production were the lowest in the northernmost zone where they were mainly sustained by pico-sized fraction. Concomitantly, in this area, small aloricate ciliates were dominant leading to a high microbivory. Conversely, higher biomass and production were measured towards the South and offshore with prevalence of larger phytoplankton (nano-and/or micro-sized fractions) supported by diatoms. The herbivorous protozooplankton and metazooplankton were more abundant in these zones, resulting in an increase of the herbivory.The vertical particulate organic carbon flux followed also a north-south and coast-offshore increasing gradient, with a higher contribution of phytoplankton, and zooplankton fecal pellets to the sinking organic matter in the southernmost area. Our results suggest that even in nutrientrich and highly productive waters, a continuum of trophic pathways, ranging from microbial to multivorous and herbivorous food webs, may exist, which implies different efficiencies in carbon export and carrying capacity within the ecosystem.

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Section: Vertical Carbon Fluxesmentioning

confidence: 99%

Influence of Nutrient Gradient on Phytoplankton Size Structure, Primary Production and Carbon Transfer Pathway in a Highly Productive Area (SE Mediterranean)

et al. 2023

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A review of the oceanographic structure and biological productivity in the southern Okhotsk Sea

Mundo,

Matsunaka,

Nakanowatari

et al. 2024

Progress in Oceanography

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2.　初夏の南部オホーツク海におけるプランクトン現存量と糞粒を介した物質輸送に関する研究

YAMAGUCHI

2023

NSUGAF

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Vertical distribution, standing stocks, and taxonomic accounts of the entire plankton community, and the estimation of vertical material flux via faecal pellets in the southern Okhotsk Sea

Cited by 3 publications

References 67 publications

Influence of Nutrient Gradient on Phytoplankton Size Structure, Primary Production and Carbon Transfer Pathway in a Highly Productive Area (SE Mediterranean)

Influence of Nutrient Gradient on Phytoplankton Size Structure, Primary Production and Carbon Transfer Pathway in a Highly Productive Area (SE Mediterranean)

A review of the oceanographic structure and biological productivity in the southern Okhotsk Sea

2.　初夏の南部オホーツク海におけるプランクトン現存量と糞粒を介した物質輸送に関する研究

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Vertical distribution, standing stocks, and taxonomic accounts of the entire plankton community, and the estimation of vertical material flux via faecal pellets in the southern Okhotsk Sea

Cited by 3 publications

References 67 publications

Influence of Nutrient Gradient on Phytoplankton Size Structure, Primary Production and Carbon Transfer Pathway in a Highly Productive Area (SE Mediterranean)

Influence of Nutrient Gradient on Phytoplankton Size Structure, Primary Production and Carbon Transfer Pathway in a Highly Productive Area (SE Mediterranean)

A review of the oceanographic structure and biological productivity in the southern Okhotsk Sea

2. 初夏の南部オホーツク海におけるプランクトン現存量と糞粒を介した物質輸送に関する研究

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2.　初夏の南部オホーツク海におけるプランクトン現存量と糞粒を介した物質輸送に関する研究