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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
The Korean Journal of Ecology
Journal Basic Information
Journal DOI :
The Ecological Society of Korea
Editor in Chief :
Volume & Issues
Volume 13, Issue 4 - Aug 1990
Volume 13, Issue 3 - Jun 1990
Volume 13, Issue 2 - Jun 1990
Volume 13, Issue 1 - Feb 1990
Selecting the target year
The Occurrence of Extrafloral Nectaries in Korean Plants
Pemberton, Robert W. ;
The Korean Journal of Ecology, volume 13, issue 4, 1990, Pages 251~266
Extrafloral nectaries have been shown in many studies to promote mutualistic interactions between plants and insects(usually ants) that visit the glands. The insects gain sugars, water and amino acids secreted by the extrafloral nectaries and benefit the plants by reducing the damage caused by plant's inseet herbivores. Little is known about the occurrence of extrafloral nectaries in plants growing in Asia. To learn about the occurrence of extrafloral nectary bearing plants in Korea, living plants and herbarium material were examined for the glands. In addition, the cover of plants with extrafloral nectaries and the proportion of woody plants with extrafloral nectaries were measured in three forest communities on Kangwha Island. 131 species of plants belonging to 53 genera and 30 families were found to have extrafloral nectaries. These 131 species comprise about 4.0% of Korea's flora, a highet percentage of extrafloral nectary bearing plants than occurs in the studied areas of North America. Extrafloral nectary bearing plants occupied 7, 23 and 55% of the covers and comprised 15, 21 and 15% of the woody plants in the three different forests, a significant level of occurrence. Many important Korean crop plants were found to have extrafloral nectaries including : sesame (Sesamum indicum L.), squash (Cucurbita moschata Duchesne), sweet potato (Ipomoea batatas Lam), persimmon (Diospyros kaki Thunb.) cotton (Gossypium indicum Lam.), mung bean (Phaseolus radiatus L.), red bean (Phaseolus angularis W.F.), peach (Prunus persica (L) Batsch.), plum (Prunus salicina Lindl.). Many of these cultivated and wild plants may receive protection by ants and other beneficial insects that visit their extrafloral nectaries.
The Structure and Function of Estuarine Ecosystem of Manggyong River -On the Dynamics of the Fish Communities-
Lee, Chung-Lyul ;
The Korean Journal of Ecology, volume 13, issue 4, 1990, Pages 267~283
The studies on the dynamics of fish communities in Manggyong River estuary were carried out from September 1989 to August 1990. The results, the fishes of 77 species belonging to 66 genera and 37 families were collected and identified. The dominant species in surveying areas were Thrissa koreana, Harengula zunasi, Synechogobius hasta and Konosirus. T. koreana was grown up to about 110mm of toatl length for a year, H. zunasi about 120mm, K. punctatus about 160mm and S. hasta about 220-460mm, respectively. The spowning season of S. hasta was from March to April, K. punctatus from April to June, H. zunasi from May to June and T. koreana from June to July, respectively. T. koreana and S. hasta belonged to to carnivorous, K. punctatus herbivorous and H. zunasi showed feeding habits of omnivorous fishes.
Community Structure and Soil Properties of the Pinus densiflora Forests in Limestone Areas
Kim, Joon-Ho ; Mun, Hyeong-Tae ; Kwak, Young-Se ;
The Korean Journal of Ecology, volume 13, issue 4, 1990, Pages 285~295
Floristic composition and soil properties were analyzed in red pine(
) communities in the limestone areas. Tanyang, Ch ungbuk Province in Korea. The tree layer was composed of
and others as well as
, all of which also appeared in soils of grinite origin The shrub layer was dominated by
for $suberosa$. Among these
belonged to calcicole plant. The herb layer dominated by
. Soil pH ranged 7.9-8.3. Total nitrogen and available phosphorus content of the soil were lower than those of noncalcareous soils. However, exchangeable calcium and magnesium content were 10 times and 2~3 times greater than those of noncalcreous soils, respectively. The difference of soil texture between top soil(loam soil) and subsoil(sand soil), and higher soil organic matter content than noncalcareous red pine forest soils seemed related to the casts forming activities of earthworms.
Environmental Factor and the Distribution of Aquatic Macrophytes Community in Tanchon
Kim, Yong-Beom ; Yim, Yang-Jai ;
The Korean Journal of Ecology, volume 13, issue 4, 1990, Pages 297~309
The distribution of aquatic macrophytes in TanChon basin, a stream of the Han River, were investigated in terms of environmental gradient from June 1989 to March 1990. In the basin, 12 species of aquatic macrophytes were listed and four communities of Potamogeton crispus community.
asiatica community were recongized by character species.
were found in rapids while
were done in pools. The depth of sediment
was showed as a exponential function of water velocity, Bd=exp (-K Wv). The values of Biochemical Oxygen Demand(BOD), Chemical Oxygen Demand(COD) and Suspendid Solid(SS) were recorded as range of 3.2~121.0mg/1, 4.2~54.5mg/1 and 4.1~114.0mg/1, respectively. And the linear positive correlation between BOD(X) and COD(Y) were expressed as Y=3.904+0.4308 X with
=0.9808 and also the correlation between BOD value(X) and SS value(Y) were done as Y=5.333+0.9606X with
=0.9700. In two dimensional analysis of BOD and water velocity, their clusters were showed similar types matching to communities classified by character species. However, no aquatic macrophyes were found at the site with BOD
50mg/l or DO
A Pollen Analytical Study of the Peat Sediments from the Chollipo Arboretum in Southwestern, Korea
Park, In-Keun ;
The Korean Journal of Ecology, volume 13, issue 4, 1990, Pages 311~320
This paper deals with pollen analysis of a 190cm core collected from the Chollipo Arboretum sedimentary basin(
7") in southwestern Korea in order to know the change of the climate and vegetation. In this research it is found that the pollen zones are divided into two layers. Pollen zone, I, the lower layer, is flourished with broadleaved trees such as Quercus, Alnus, Corylus, Betula, Carpinus and Castanopsis, and about 30~40% of pollen of those trees consist of that of Q. acuta/glauca and Castanopsis which are evergreen trees. And pollen of Trapa, Typhaceae and Nymphaceae living in wet habitat, is dominant among the nonarboreal pollen. Therefore we can conclude that it ould be warmer and more humid than present in this area of the past. In pollen zone, the upper layer, pollen of Pinus is dominant and those of Artemisia, Gramineae, Compositae and spore are increased in quantity, while pollen of Quercus, Belula and Nymphaceae decreased. It it supposed that the climate of this zone was drier than that zone.that zone.
Wave Character of the Timber Line on Paektusan
Chang, Nam-Kee ;
The Korean Journal of Ecology, volume 13, issue 4, 1990, Pages 321~329
An investigation was performed to elucidate wave character of the timber line on the middle slope of the west side of Paektusan. The Betula ermanii forest, which composes the timber line on about 2, 060m elevation of sea level, is the pure community of B. ermanii. Diffraction pattern of wave distribution of B. eramnii due to boundary condition of alpine temperature gradient was found out on the timber line. Interference patterns of waves of B. ermanii communities produced by environment conditions such as soil layers, whids, snow and relief were shown on a specific area. These facts indicate that the B. ermanii individuals have wave and particle duality, the complementarity principle.
Analysis of Vegetation on the Pavements and under the Street Trees in Seoul
Chang, Nam-Kee ; Kim, Eun-Ae ;
The Korean Journal of Ecology, volume 13, issue 4, 1990, Pages 331~342
Analysis of vegetation on the pavements and under the trees of streets in Seoul city were investigated from July to November 1989. All of the vascular herbs were 9 orders, 13 families, 30 genera, 37 species and 1 forma. Species diversity and evenness index were higher on the pavements than under the trees of streets. Eragrostis multicaulis with C-4 pathway was a dominant species, and next orders of importace values were Eleusine indica(C-4), Digitaria sanguinalis(C-4), Taraxacum officinale(C-3) and Erigeron annus(C-3). On the pavements and under the trees of streets, light intensity and surface temperature were very high, Also, these sites were affected by many kinds of human interferences. Therefore, it was an example of adaptation to specific ecological environments that C-4 plats were more dominant than C-3, growth forms of C-3 plants were rosette or prostrate, and annual or biennial plants were distributed in these studied sites. Generally, fruits types were grains, achens and capsules. Seeds were very small and some had appendages such as pappus.
Phytosociological Study on the Evergreen Broad-leaved Forests in Dadohae National Marine Park -The vegetation of Kumo Archipelago-
Kim, Chul-Soo ; Oh, Jang-Geun ;
The Korean Journal of Ecology, volume 13, issue 4, 1990, Pages 343~359
Phytosociological investigation of the forest vegeation was carried out in Kumo archipelago at the period of May 21th 1990 to May 29th 1990 by Braun-Blanquet's method. The forest vegetation was classified into 7 communities, Camellia japonica, Castanopsis cuspidata var. sieboldii, Machilus thunbergii, Camellia japonica-Pinus thunbergii, Camellia japonica-Torreya nucifera, Carpinus coreana and Quercus acutissima community. Based on the classification of communities, the actual vegetation maps were drawn in 1 : 50,000 scale.