Latitudinal variation of phytoplankton communities in the western Arctic Ocean

Joo, Hyoung Min; Lee, Sang H.; Jung, Seung Won; Dahms‬, Hans-Uwe; Lee, Jin Hwan

doi:10.1016/j.dsr2.2011.06.004

Cited by 27 publications

(22 citation statements)

References 48 publications

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“…In such waters, nutrients are generally depleted and small-celled phytoplankton and regenerated production are common (e.g., Sherr et al 2003;Hill et al 2005;Matsuno et al 2014). Community structures for the subsurface chla maximum were also reported and generally pennate and centric diatoms were predominant in terms of cell abundance or chla concentration (Sukhanova et al 2009;Joo et al 2012;Coupel et al 2012). Consistent with these past studies, a higher fuco/chla ratio was found at the depth of chla maximum during the FPO term, which increased after the SWE.…”

Section: Short-term Changes Of Phytoplankton Community Structuresupporting

confidence: 78%

“…Our data revealed hex, pras, and peri ratios against chla were larger before the SWE in the upper layer where a relatively large value of f SIM was found. Such a large value of f SIM is typical of the surface water of the northern basin area during late summer to fall (e.g., Yamamoto-Kawai et al 2005) where non-diatom communities such as prasinophytes, green-algae, and haptophytes are generally predominant (Hill et al 2005;Sukhanova et al 2009;Joo et al 2012;Coupel et al 2012;Fujiwara et al 2014). In such waters, nutrients are generally depleted and small-celled phytoplankton and regenerated production are common (e.g., Sherr et al 2003;Hill et al 2005;Matsuno et al 2014).…”

Section: Short-term Changes Of Phytoplankton Community Structurementioning

confidence: 99%

“…In addition, because we unfortunately did not conduct microscopic analysis for the detailed identification of phytoplankton species, target taxa are difficult to determine and validate. For these reasons, the taxonomic composition was inferred from the patterns of pigment composition fully referring to previous studies of Arctic waters (e.g., Booth and Horner 1997;Vidussi et al 2004;Hill et al 2005;Sukhanova et al 2009;Joo et al 2012;Coupel et al 2012Coupel et al , 2015Fujiwara et al 2014). …”

Section: Interpretation Of Taxonomic Composition Using Hplc Pigmentsmentioning

confidence: 99%

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Changes in phytoplankton community structure during wind-induced fall bloom on the central Chukchi shelf

et al. 2018

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The recent increasing of atmospheric turbulence has had considerable impact on the oceanic environment and ecosystems of the Arctic. To understand its effect on phytoplankton community structure, a Eulerian fixed-point observation (FPO) was conducted on the Chukchi shelf in fall 2013. Temporal and vertical distributions of the phytoplankton community were inferred from algal pigment signatures. A strong wind event (SWE) occurred during the observation term, and significant convection supplied nutrients from the bottom layer to the surface. Before the SWE, pigment composition in the warmer, less saline, and nutrient-poor surface waters was diverse with low concentration of chlorophyll-a (chla). Vertical mixing induced by the SWE weakened the stratification and brought sufficient nutrients to enhance diatom-derived pigment concentrations (e.g., fucoxanthin and chlc3), suggesting increases in diatoms. We also developed a model to predict the distribution of major phytoplankton pigment/chla ratios using a profiling multi-wavelength fluorometer (Multi-Exciter) with higher spatio-temporal resolution. The Multi-Exciter also captured changes in pigment composition with environmental changes at the FPO site and at four observation sites 16 km from the location of the FPO. Furthermore, we investigated the change in grazing rates of the major Arctic copepod Calanus glacialis copepodid stage five to assess the interaction between primary and secondary producers during the fall bloom. Increased diatom biomass caused a significant increase in the grazing rate on microphytoplankton (> 20 µm) and a decrease on nanophytoplankton (2-20 µm), indicative of a strong cascade effect because of the reduction of microzooplankton due to the grazing from C. glacialis. We conclude that SWEs during fall might affect food webs via the alternation of seasonal succession of phytoplankton community structure.

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Section: Short-term Changes Of Phytoplankton Community Structuresupporting

confidence: 78%

Section: Short-term Changes Of Phytoplankton Community Structurementioning

confidence: 99%

Section: Interpretation Of Taxonomic Composition Using Hplc Pigmentsmentioning

confidence: 99%

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Changes in phytoplankton community structure during wind-induced fall bloom on the central Chukchi shelf

et al. 2018

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“…In the autumn months, prasinophytes, which adapt to low temperatures, short daylight hours and an oligotrophic environment, were found to dominate (Lovejoy et al, 2007). At the ice-free surface layer without light limitations, due to the nutrient depletion at the surface layer, phytoplankton, mainly diatoms, are known to exist in the subsurface layer at a maximum depth of 20-30 m (Cota et al, 1996;Sukhanova et al, 2009;Joo et al, 2012). In the present study, nutrient (DIN and silicate) depletion and the occurrence of the sporadic subsurface chl a maximum corresponded well to the aforementioned studies (Fig.…”

Section: Characteristics Of a Microplankton Communitymentioning

confidence: 99%

“…The microplankton community in the western Arctic Ocean is divided into three groups -shelf, continental slope and basin (Sukhanova et al, 2009;Matsuno et al, 2014). As a special characteristic, during the summer, the development of pycnocline prevents the supply of nutrients to the surface layer, and phytoplankton (as determined by chlorophyll a) form a maximum subsurface layer that may be between 20 and 30 m in depth Sukhanova et al, 2009;Joo et al, 2012). With respect to the microplankton community on the shelf of the Chukchi Sea, diatoms are the dominant taxa both in abundance and biomass (Matsuno et al, 2014;Yang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Short-term changes in a microplankton community in the Chukchi Sea during autumn: consequences of a strong wind event

et al. 2016

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Abstract.Recent studies indicate an increase in atmospheric turbulence in the Chukchi Sea due to the recent drastic sea-ice reduction during summer months. The importance of the effects of this atmospheric turbulence on the marine ecosystem in this region, however, is not fully understood. To evaluate the effects of atmospheric turbulence on the marine ecosystem, high-frequency sampling (daily) from five layers of the microplankton community between 0 and 30 m at a fixed station in the Chukchi Sea from 10 through 25 September 2013 was conducted. During the study period, a strong wind event (SWE) was observed on 18 and 19 September. The abundance of microplankton was 2.6 to 17.6 cells mL −1 , with a maximum abundance being reported at 20 m on 22 September, while diatoms were the most dominant taxa throughout the study period. The abundance of diatoms, dinoflagellates and ciliates ranged between 1.6 and 14.1, 0.5 and 2.4 and 0.1 and 2.8 cells mL −1 , respectively. Diatoms belonging to 7 genera consisting of 35 species (Cylindrotheca closterium and Leptocylindrus danicus were dominant), dinoflagellates belonging to 7 genera consisting of 25 species (Prorocentrum balticum and Gymnodinium spp. were dominant) and ciliates belonging to 7 genera consisting of 8 species (Strobilidium spp. and Strombidium spp. were dominant) were identified. Within the microplankton species, there were 11 species with abundances that increased after the SWE, while there was no species with an abundance that decreased following the SWE. It is conjectured that atmospheric turbulences, such as that of an SWE, may supply sufficient nutrients to the surface layer that subsequently enhance the small bloom under the weak stratification of the Chukchi Sea Shelf during the autumn months. After the bloom, the dominant diatom community then shifts from centric-dominated to one where centric/pennate are more equal in abundance.

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Response of phytoplankton community to different water types in the western Arctic Ocean surface water based on pigment analysis in summer 2008

Jin

Zhuang

et al. 2017

Acta Oceanol. Sin.

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Latitudinal variation of phytoplankton communities in the western Arctic Ocean

Cited by 27 publications

References 48 publications

Changes in phytoplankton community structure during wind-induced fall bloom on the central Chukchi shelf

Changes in phytoplankton community structure during wind-induced fall bloom on the central Chukchi shelf

Short-term changes in a microplankton community in the Chukchi Sea during autumn: consequences of a strong wind event

Response of phytoplankton community to different water types in the western Arctic Ocean surface water based on pigment analysis in summer 2008

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