Spatial variations of small phytoplankton contributions in the Northern Bering Sea and the Southern Chukchi Sea

Lee, Sang‐Heon; Ryu, Jongseong; Lee, Dabin; Park, Jung-Woo; Kwon, Jungkee; Zhao, Jingping; Son, Seung-Hyun

doi:10.1080/15481603.2019.1571265

Cited by 5 publications

(8 citation statements)

References 45 publications

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“…The proportions of different size chlorophyll-a were 40.2% (±35.4%), 22.5% (±10.5%) and 37.2% (±31.3%) for micro-, nano-and picophytoplankton, respectively, during our observation period in 2017. In the northern Bering Sea, the dominant size groups of phytoplankton are generally nano-and microphytoplankton based on phytoplankton size class results derived from satellite ocean color data from 1998 to 2016 [12]. The overall dominant size of phytoplankton is composed of nano-phytoplankton (49.0 ± 9.6%), followed by micro-phytoplankton (34.9 ± 8.0%) and pico-phytoplankton (16.1 ± 7.3%) in the Chirikov Basin of the northern Chukchi Sea [12].…”

Section: Chlorophyll-a Concentration and Different Size Chlorophyll-a Compositions In The Northern Bering And Chukchi Seasmentioning

confidence: 99%

“…In the northern Bering Sea, the dominant size groups of phytoplankton are generally nano-and microphytoplankton based on phytoplankton size class results derived from satellite ocean color data from 1998 to 2016 [12]. The overall dominant size of phytoplankton is composed of nano-phytoplankton (49.0 ± 9.6%), followed by micro-phytoplankton (34.9 ± 8.0%) and pico-phytoplankton (16.1 ± 7.3%) in the Chirikov Basin of the northern Chukchi Sea [12]. However, the chlorophyll-a contributions of small phytoplankton are largely variable among different seasons [40].…”

Section: Chlorophyll-a Concentration and Different Size Chlorophyll-a Compositions In The Northern Bering And Chukchi Seasmentioning

confidence: 99%

“…Moreover, seasonal sea ice cover has been retreating earlier and forming later in the Pacific Arctic region over the last decade [10]. These current and ongoing changes in environmental conditions could subsequently cause changes in biogeochemical processes and consequently alter marine ecosystem structure in the northern Bering and Chukchi seas [11,12]. Indeed, the prior studies indicate that the variation in primary productivity of phytoplankton is mainly governed by freshwater content variability in the Pacific Arctic region [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…These long-term changes in the functional phytoplankton group are strongly related to increasing annual sea surface temperature [13]. Therefore, monitoring the phytoplankton community responses such as shifts in dominant phytoplankton species and biomass to the current environmental changes is crucial to observe marine ecosystem alterations in the northern Bering and Chukchi seas [12,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…Especially, the contribution of small phytoplankton could be necessary to understand potential impacts on the total primary production and, thus, whole marine ecosystems [12,20,21]. Moreover, the biochemical characteristics of phytoplankton such as C:N ratio are critical for understanding marine biogeochemical processes responding to environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

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Contribution of Small Phytoplankton to Primary Production in the Northern Bering and Chukchi Seas

Park

Kim

et al. 2022

Water

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The northern Bering and Chukchi seas are biologically productive regions but, recently, unprecedented environmental changes have been reported. For investigating the dominant phytoplankton communities and relative contribution of small phytoplankton (<2 µm) to the total primary production in the regions, field measurements mainly for high-performance liquid chromatography (HPLC) and size-specific primary productivity were conducted in the northern Bering and Chukchi seas during summer 2016 (ARA07B) and 2017 (OS040). Diatoms and phaeocystis were dominant phytoplankton communities in 2016 whereas diatoms and Prasinophytes (Type 2) were dominant in 2017 and diatoms were found as major contributors for the small phytoplankton groups. For size-specific primary production, small phytoplankton contributed 38.0% (SD = ±19.9%) in 2016 whereas 25.0% (SD = ±12.8%) in 2017 to the total primary productivity. The small phytoplankton contribution observed in 2016 is comparable to those reported previously in the Chukchi Sea whereas the contribution in 2017 mainly in the northern Bering Sea is considerably lower than those in other arctic regions. Different biochemical compositions were distinct between small and large phytoplankton in this study, which is consistent with previous results. Significantly higher carbon (C) and nitrogen (N) contents per unit of chlorophyll-a, whereas lower C:N ratios were characteristics in small phytoplankton in comparison to large phytoplankton. Given these results, we could conclude that small phytoplankton synthesize nitrogen-rich particulate organic carbon which could be easily regenerated.

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Section: Chlorophyll-a Concentration and Different Size Chlorophyll-a Compositions In The Northern Bering And Chukchi Seasmentioning

confidence: 99%

Section: Chlorophyll-a Concentration and Different Size Chlorophyll-a Compositions In The Northern Bering And Chukchi Seasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Contribution of Small Phytoplankton to Primary Production in the Northern Bering and Chukchi Seas

Park

Kim

et al. 2022

Water

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Size-differential photosynthetic traits of phytoplankton in the Chukchi Sea

Lee

Yun

Jang

et al. 2023

Continental Shelf Research

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Possible future scenarios in the gateways to the Arctic for Subarctic and Arctic marine systems: II. prey resources, food webs, fish, and fisheries

Mueter

Planque

Hunt

et al. 2021

ICES Journal of Marine Science

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Climate change impacts are pronounced at high latitudes, where warming, reduced sea-ice-cover, and ocean acidification affect marine ecosystems. We review climate change impacts on two major gateways into the Arctic: the Bering and Chukchi seas in the Pacific and the Barents Sea and Fram Strait in the Atlantic. We present scenarios of how changes in the physical environment and prey resources may affect commercial fish populations and fisheries in these high-latitude systems to help managers and stakeholders think about possible futures. Predicted impacts include shifts in the spatial distribution of boreal species, a shift from larger, lipid-rich zooplankton to smaller, less nutritious prey, with detrimental effects on fishes that depend on high-lipid prey for overwinter survival, shifts from benthic- to pelagic-dominated food webs with implications for upper trophic levels, and reduced survival of commercially important shellfish in waters that are increasingly acidic. Predicted changes are expected to result in disruptions to existing fisheries, the emergence of new fisheries, new challenges for managing transboundary stocks, and possible conflicts among resource users. Some impacts may be irreversible, more severe, or occur more frequently under anthropogenic climate change than impacts associated with natural variability, posing additional management challenges.

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Spatial variations of small phytoplankton contributions in the Northern Bering Sea and the Southern Chukchi Sea

Cited by 5 publications

References 45 publications

Contribution of Small Phytoplankton to Primary Production in the Northern Bering and Chukchi Seas

Contribution of Small Phytoplankton to Primary Production in the Northern Bering and Chukchi Seas

Size-differential photosynthetic traits of phytoplankton in the Chukchi Sea

Possible future scenarios in the gateways to the Arctic for Subarctic and Arctic marine systems: II. prey resources, food webs, fish, and fisheries

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