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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal Basic Information
Journal DOI :
The Korean Society of Phycology
Editor in Chief :
Volume & Issues
Volume 11, Issue 4 - Dec 1996
Volume 11, Issue 3 - Sep 1996
Volume 11, Issue 2 - Jun 1996
Volume 11, Issue 1 - Mar 1996
Selecting the target year
Historical Review and Prospect on Diatoms in Korea
Lee, Jin-Hwan ;
ALGAE, volume 11, issue 3, 1996, Pages 247~247
Research in Korea on fresh-water and marine diatoms began after the year of 1910s, about 80 years ago, during which time around 300 or so theses have been published. 13 research papers on fresh water diatoms were written by foreign scholars between 1918-45, and contained research on species composition, species description, and frequency. On the other hand, 12 papers on marine diatoms appeared more than 10 years after that began on fresh water diatoms, beginning in early 1930-45, but contained similar contents. Research almost came to a standstill in the 1950s due to the Korean war, but in the 1960s, 17 papers on fresh water diatoms and 19 on marine diatoms were produced. From 1970-95, the number of papers on fresh water and marine diatoms increased rapidly to more than double every 10 years. Research included species composition, systematic classification, fine structure, dominant species, representative species, standing crops, succession, and geographical distribution. Planktonic, benthic, and epiphytic diatoms were introduced with regard to environmental pollution along with the ecological indices, and the amount and indication of water pollution were determined through research on aquatic ecosystems, marking great progress in a wide variety of fields. Regarding research on diatoms, there are University departments and research institutes, public and private institutes which include a large member of researchers, along with 6 established Societies that publish both Journals and Bulletins, as well as universities which publish research theses, which are indicative of a vast and thorough bulk of research being carried out on the subject.
Taxonomic Study of Amphiroa valonioides Yendo (Corallinaceae, Rhodophyta) in Korea
Choi, Do-Sung ; Lee, In-Kyu ;
ALGAE, volume 11, issue 3, 1996, Pages 269~269
Morphological and anatomical characters of Amphiroa valonioides Yendo are investigated with field materials and taxonomic accounts are given to the species. The species is well defined by a 1-2 cm height, one-tiered geincula and prominent tetrasporangial conceptacles scattered on all sides of intergenicula. And these characters agree with the original description by Yendo. The significant taxonomic characters of the species newly investigated in this study are that the surface structure of intergeniculum is a typical Amphiroa-type, and it has trichocytes and genicular medullary filaments connected by secondary pits. In addition, the species grow on rocks in the calcareous debrisfilled tufts with conspicuous crustose holdfast. It is a warm temperate species, and grows in the sub-tidal zone of the Cheju Island and its vicinities in Korea. The distribution region of the species seems to be the warm temperate and tropical coasts of the North Pacific Ocean. Male and female reproductive organs of the species have not been found along the coasts of the world until now. Therefore, it seems to need further considerations about its reproduction and life history.
A Study on the Phytoplankton in the Paldang Dam Reservoir III. The Changes of Diatom Community Structure
Lee, Kyung ; Yoon, Sook-Kyung ;
ALGAE, volume 11, issue 3, 1996, Pages 277~277
The seasonal changes of diatom community structure was investigated at four stations in the Paldang Dam Reservoir from April, 1994 to October, 1995 at bimonthly interval. Total number of diatom species identified were 87 spp. Compared with other previous studies, the total number of diatom species occurred has decreased gradually. There was a bimodal pattern showing maximum of diatom standing crops on June and December at the all investigated stations except for the station 2 in October 1995, and the continuous increase of diatom standing crops size, and the change of diatom blooming periods from March and July to April-June and December. The major dominant species was Aulacoseira species during the investigation periods and especially Stephanodiscus species was a major dominant species during winter. The dominance of Aulacoseira species and Stephanodiscus species in the Paldang Dam Reservoir meant that the water body revealed a eutrophic status to a considerable extent.
Seasonal Changes of Marine Plants in Oeyondo Island on the Yellow Sea
Cho, Tae-Oh ; Boo, Sung-Min ;
ALGAE, volume 11, issue 3, 1996, Pages 285~285
Seasonal change of marine plane of Oeyondo Island on the Yellow Sea was bimonthly investigated from January 1992 to December 1993. A total of 129 species (16 green, 26 brown, 79 red algae, and 5 grasses) of marine plants were identified in this study. The marine flora of Oeyondo Island seems to be much diverse than that of Muchangpo and Sapsido Island where is situated at the same latitude. Seventy-four species occurred on July, while 53-54 taxa in winter. Cluster analysis based on presence and absence of species showed that there were three marine floral seasons in Oeyondo; spring, summer and winter flora. Based on changes of plant length and reproductive organ of the sixteen species were grouped five seasonal patterns, that shows a similar tendency to the seasonal change of seawater temperature.
Dynamics of the Marine Macroalgal Community in Inchon Dock Ecosystem, Western Coast of Korea
Yoo, Jong-Su ; Kim, Young-Hwan ; Lee, In-Kyu ;
ALGAE, volume 11, issue 3, 1996, Pages 295~295
Marine algal communities of Inchon Dock were investigated qualitatively and quntitatively. Species composition, biomass, dominant species in biomass and relative frequency, and vertical distributional pattern were surveyed monthly in 1991 and 1994. A total of 47 species was identified; 20 blue-green, 14 green, 6 brown and 7 red algae. Lyngbya pellucida was collected for the first time in Korea from the present study. Dominant species determined by biomass and frequency were Polysiphonia morrowii, Lyngbya lutea and Lyngbya semiplena. Seasonl fluctuations of mean biomass were
at Station 1 and
at Station 3. Ecosystem of the Inchon Dock is very unique in species composition, dominant species and seasonal changes of macroalgal community compared to other coastal zone in Korea.
Characterization of Light-harvesting Pigments in Spores of Ulva fasciata Delile
Shin, Hyun-Woung ; Smith, Celia M. ;
ALGAE, volume 11, issue 3, 1996, Pages 309~309
Results of in vivo absorbance spectra, high-performance liquid chromatography (HPLC) and in vivo fluorescence spectra were compared to characterize pigments in spores and vegetative tissues of Ulva fasciata. In vivo absorbance spectra of these spores revealed a broad absorbance capacity from 470 to 550 nm not observed in vegetative tissue of the same thalli. Calculation of the 4th derivative of the absorbance spectrum corresponds with wavelength to an absorbance peak of one of the pigments present in the sample. The chlorophyll and carotenoid composition, determined by standard HPLC methods with a three solvent gradient system and
reversed-phase column chromatography revealed that lutein and
were the main novel contribution in the blue-green region (475 to 495 nm). The ratio of
in spores was 3- to 4-fold higher than in vegetative tissues; the ratio of lutein/Chl
in spores was 1.5- to 2-fold higher than in vegetative tissues. In vivo fluorescence spectra for room temperature PSII emission in these unicells revealed a broad spectral range for light-harvesting capacity, with enhanced harvesting from 470 nm to 495 nm, a 5 nm shift to longer wavelengths for spores when compared with vegetative tissues of the same thalli. The enhanced in vivo absorbance and in vivo fluorescence by spores suggests that distinct carotenoids function in light-harvesting.
On Ammonium Uptake in Ulva pertusa Kjellman
Jun, Bang-Ook ; Lee, Sung-Won ; Kwon, Young-Myung ;
ALGAE, volume 11, issue 3, 1996, Pages 317~317
Ammonium uptake kinetics and effects of several factors influencing ammonium uptake rate in Ulva pertusa were investigated and the possible uptake mechanism was speculated. Uptake rate was calculated from ammonium depletion in a solution by multiple flask method. The uptake was not linear with time. The concentration of ammonium maximum uptake was
, and uptake rate was decreased at higher concentration. Michaelis-Menten kinetics could not be applied. The optimum temperature was
value was about 1.2, indicating that ammonium uptake can occur via passive diffusion. Active transport process using cellular eneragy might not be involved because vanadate, an ATPase inhibitor, did not inhibit ammonium uptake. Light treatment caused two times increase compared to the dark control, and DCMU, a photosynthesis inhibitor, nullified light caused uptake increase. This result suggest the possibility that ammonium can further be incorporated in the carbon skeleton made photosynthetically. The fact that caycloheximide significantly reduced uptake rate also support this possibility. But ,4-dinitrophenol, a potent respiration inhibitor could not make any effects. The uptake was reduced as the pH of external solution was decreased, because concentration difference of uncharged ammonium between external solution and cell sap of Ulva pertusa became smaller. Membrane electrical potential calculated on the base of internal and external solution by Nernst equation did not rule out the passive transport hypothesis. In summary, ammonium uptake in Ulva pertusa is thought to be occurred thru passive transport due to concentration difference of uncharged ammonium between external external solution and cell sap of Ulva pertusa rather than membrane porter and energy consuming active process.
Impact of Physical Factors on Periodic Reproduction for Hawaiian Algae Ulva fasciata Delile and Enteromorpha intestinalis (L.) Link
Shin, Hyun-Woung ; Smith, Celia M. ;
ALGAE, volume 11, issue 3, 1996, Pages 325~325
Aspects of the periodicity and fecundity of reproduction for Ulva fasciata and Enteromorpha intestinalis were investigated at two sites. The
site was exposed to higher tide levels than the second site, Kahala Beach, although both are geographically closely situated on the southern coast of
. At the Ka'alawai site, thalli of Ulva fasciata liberated biflagellate gametes or quadriflagellate spores continuously during the highest tides of the month, and were routinely subjected to tidal exposure through this daily investigation. At the Kahala site, thalli of E. intestinalis and U. fasciata had less predictable patterns of motile cells production. The Kahala site was a shallow subtidal site rarely exposed by low tides. Gametes and spores were occasionally produced by separate thalli on the same day at both sites, indicating some regularity in the life history phases for these populations. The typical ratio of reproductive to vegetative areas was 4.91 for U. fasciata thalli for Ka'ala'wai site. The typical thallus of U. fasciata produced
motile cells. The number of sporulating cells in
of tissue was 3315. Each sporulating cell produced between 25 to 30 motile cells. The induction of motile cells by physical treatments was also investigated to identify some of the important factors leading to cell formation and release for laboratory manipulation. Incubation in a cool temperature (
) in the dark consistently induced the highest number of motile cells to be released from tissues of both U. fasciata and E. intestinals. Dim room light (
) and cold temperature (
) treatments resulted in fewer cells released than in the
treatment, but higher numbers than under laboratory desiccation or hyposalinity treatments. In this study, laboratory manipulations confirm that plants respond to cues even if they are not present in the natural environment. Production of numerous spores per plant is clearly an adaptive strategy for ecological success for these weedy algae.
The Use of FITC-Lectin Labelling in Characterizing Strains of Conjugatophyceae
Rowe, A. ; Lopez-Rodas, V. ; Costas, E. ;
ALGAE, volume 11, issue 3, 1996, Pages 333~333
FITC-labelled lectins successfully characterized different laboratory strains of Spirogyra insignis according to their individual and distinct lectin binding reactions. Lectin binding patterns could additionally be used to gauge genetic variability in the Conjugatophycean species Spirogya insignis and Zygnema commune in nature. Temporal and spatial variation was suggested by alterations in the percentage occurrence of and the appearance and subsequent disappearance of distinct lectin binding patterns during the sampling periods and between reservoirs. In addition, the asexual/sexual reproduction rates was measured, suggesting a clonal structure for these Conjugatophycean species in nature. FITC-lectin labelling appears to be a rapid and successful tool to detect genetic variability within species.