Seasonal Characteristics of Phytoplankton Distribution in Asan Bay

이상현,; Park, Chul; Shin, Yongsik; Ryull, Yang Sung

doi:10.4217/opr.2005.27.2.149

Cited by 14 publications

(6 citation statements)

References 11 publications

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“…The surf zone of Kkotji beach wherein Acanthomysis koreana inhabits, the subject species of the present study, showed typical marine environment of temperate sea area wherein the water temperature raised in spring, reached peak during summer, and lowered in autumn. Blooming of phytoplankton has been reported to rise with water temperature during spring (Park, 2008;Yi, 2005). High count of brooded eggs in spring, identified in the present study, was associated with increased supply of feeds owing to blooming of phytoplankton; the result of the previous study on selfsame that Archaeomysis kokuboi (Ma, 2001).…”

Section: O N L I N E C O P Ysupporting

confidence: 67%

Fecundity of Acanthomysis koreana at surf zone in Kkotji beach on the west coast of Korea

Kim¹,

Choi²,

Han³

et al. 2019

JEB

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Aim:Methodology: Results:Interpretation: Key words:The present investigation was carried out to study seasonal changes in the habitat of Acanthomysis koreana that inhabits the surf zone of Kkotji beach in the west coast of Korean peninsula together with the changes in their fecundity associated with respective sizes of individuals and (most) influential factors affecting the fecundity.Sampling was done during June 2014 -May 2015 with the help of a 50-100 cm depth of the surf zone of Kkotji beach at the time of spring tide.During November to December, 2014, a seasonal change in water temperature was observed wherein the biggest difference in water temperature marked approximately 9℃. The annual level of salinity in the subject area of investigation varied insignificantly. The number of eggs observed therein recorded the highest level in spring and the lowest level in summer. The brooded eggs were higher in spring than summer. The number of eggs in each season exhibited positive correlation with the increasing length of carapace of brooding females. However, the size of eggs in each season showed no significant differences. Fecundity of Acanthomysis koreana was found higher in spring than in autumn.

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Section: O N L I N E C O P Ysupporting

confidence: 67%

Fecundity of Acanthomysis koreana at surf zone in Kkotji beach on the west coast of Korea

Kim¹,

Choi²,

Han³

et al. 2019

JEB

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“…In the review of gut clearance rate constant, temperature and initial gut contents, Irigoien (1998) showed that copepods fed on laboratory grown phytoplankton cultures have shorter gut passage time than fresh caught copepods, which probably have a more variable diet (phytoplankton but also detritus and/or microzooplankton) than laboratory acclimated animals. In Asan Bay, phytoplankton exhibits seasonal variation in composition (Yi et al. 2005; Hyun et al.…”

Section: Discussionmentioning

confidence: 99%

Copepod feeding in a coastal area of active tidal mixing: diel and monthly variations of grazing impacts on phytoplankton biomass

et al. 2011

Self Cite

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This study examined monthly feeding rates and grazing impact on phytoplankton biomass, as well as diel feeding rhythms of four key copepod species in a tidally well mixed estuary (Asan Bay, Korean Peninsula). Monthly ingestion rates estimated based on gut pigment analysis were closely associated with their peak densities, but not with phytoplankton biomass, implying high ingestion may be related to reproductive output for population growth. The three smaller copepods, Acartia hongi, Acartia pacifica and Paracalanus parvus, showed feeding preference for smaller phytoplankton (<20 μm) with higher clearance rates, whereas the larger Calanus sinicus preferred larger phytoplankton. Acartia pacifica and P. parvus showed distinct increased nocturnal feeding rates as measured with gut fluorescence, whereas A. hongi showed no significant day–night differences. Copepod diel feeding patterns were not associated with food quantity, and endogenous physiological rhythm might be hypothesized as responsible for the observed diel feeding patterns. Grazing impact on phytoplankton biomass by the four copepods in the estuary was on average 8% (range 0.2–29.8%) of the phytoplankton standing stock, similar to values reported in other coastal waters. Very high copepod abundances but low daily carbon ration (<20% for all copepods) provided by feeding on phytoplankton indicate that copepods also grazed on other non‐phytoplankton foods in Asan Bay.

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“…Abundance and species composition of microalgae are determined by biological factors owing to ingestion of high-level consumers and nonbiological factors such as nutrients, water temperature, and light intensity [27,28]. Generally, phytoplankton bloom occurs primarily in spring and autumn in Korea due to biological and environmental factors [29,30].…”

Section: Abundance and Composition Of Microalgae In Seawatermentioning

confidence: 99%

“…The density of microalgae increased from April (438 x 10 3 cell/L) and peaked in May and lowered in June and August due to frequent precipitation, and subsequently increased again in September. In February, microalgae are rarely present, suggesting that there is an exceptionally rare occurrence at 10 m depth, because strong winds and active vertical mixing in winter causes concentration of microalgae to be below the critical depth [28].…”

Section: Abundance and Composition Of Microalgae In Seawatermentioning

confidence: 99%

Seasonal changes of fouling-forming microalgae on lithium manganese oxide disks in seawater, East Sea, Republic of Korea

Kim

Jeong

Chung

et al. 2020

Environmental Engineering Research

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For investigation of biofouling characteristics of marine microalgae on lithium manganese oxide disk (LD), which is manufactured for recovery of mineral resources from seawater, we carried out an exposing test for LD at Okgye, East Sea, Korea. The amount and species composition of the attached microalgae on the LD surfaces were determined based on the exposing period and season. The immersion test was conducted for 7 d, 14 d and 21 d for each of the three different seasons of May, August and October. The number of microalgae attached to the LD is dependent in season and exposing duration. In May and October, the microalgae adhered approximately 4,000 cells/cm2 after 7 d and after 14 d, more than 2-fold were attached that exceeding 10,000 cells/cm2 . In spring and summer, centric diatom, Guinardia sp. and Cyclotella sp. were dominated in seawater, and they predominantly adherent in short exposure periods of within 7 d. However, dominant adherent species were succeeded to Cylindrotheca sp., pennate diatom, as longer exposure times. The microalgae morphology, which favored attachment was also a major cause of prolonged fouling upon exposure of LD surface.

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Seasonal Characteristics of Phytoplankton Distribution in Asan Bay

Cited by 14 publications

References 11 publications

Fecundity of Acanthomysis koreana at surf zone in Kkotji beach on the west coast of Korea

Fecundity of Acanthomysis koreana at surf zone in Kkotji beach on the west coast of Korea

Copepod feeding in a coastal area of active tidal mixing: diel and monthly variations of grazing impacts on phytoplankton biomass

Seasonal changes of fouling-forming microalgae on lithium manganese oxide disks in seawater, East Sea, Republic of Korea

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