• 인간식물환경학회지
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• 제23권3호
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• pp.293-304
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• 2020

Background and objective: This study was carried out to assess the relationship between the internal and external environments and the ecological items in five sites with a high level of artificial use intensity prior to the establishment of Geumgang River riparian ecological belts. Methods: The sites were classified into forest type, cultivated land type and urbanized type in accordance with their respective locational types. Ecological items including plant ecology such as proportion, naturalization index and urbanization index of native species were analyzed and animal ecology such as the number of species and population of wild birds, amphibians and reptiles, mammals, and butterflies and dragonflies, which are indicator insects, were investigated. In addition, species diversity indices of wild birds, butterflies and dragonflies found in all the subject lands were computed. Results: Among the plant ecological items, the ratio of native species in the forest type was higher than 90%, which was a satisfactory level, while the naturalization and urbanization indices were less than 10%. The number of species in the animal ecological characteristics was reduced in the order of forest type, cultivated land type and urbanized type. As the results of correlation analysis, the internal area of the planted area showed a negative correlation with the total of individuals. The area of grasslands showed a positive correlation with the number of dragonfly species and the total number of individuals, thereby illustrating that wet grasslands have positive effects. The area of surrounding forests, as an external environment, had a negative correlation with the urbanization index (UI) but a positive correlation with the inhabitation of butterflies and the total number of species. Conclusion: The results confirmed the need for more diversified special compositions including planted land, grassland, wetland, bodies of water and waterways within the subject land in the wetland ecological belt along with the need for surrounding forest location and preservation from the perspective of purchase and restoration of land for enhancement of wider biodiversity in the future.

• 수산해양기술연구
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• 제47권4호
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• pp.338-343
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• 2011

To obtain the effective sampling estuarine fauna by a passive net in the West Sea of Korea occurring strong tide, catch were collected by bag nets with various sampling trials off Ganghwa Island in November 2009. We compared the difference of community structures (on spring tide vs. neap tide, total sample vs. subsample and 4 nets vs. 1 net) with each species composition as a sampling unit by the Pearson chi-square test. Number of individual at the spring tide was more abundant than that at the neap tide (p<0.0001) although number of species at the spring tide was not significantly different with that at the neap tide (p=0.174). Both number of species (p=0.138) and number of individual (p=0.096) were not significantly different between total sample and random subsample. Number of species was not significantly different between the subsample by 1 net and the subsample by 4 nets (p=0.515), but number of individual was a little different on both samples (p=0.024). In conclusion, we suggest the subsample by 1 net at spring tide as the effective sampling estuarine fauna by a passive net in the West Sea occurring strong tide.

• 한국환경생태학회지
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• 제11권3호
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• pp.270-276
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• 1997

본 연구는 녹지 공간 확충과 입면녹화용으로 유용한 덩굴식물의 분포 특성을 알아보기 위하여 기존 식생자료를 토대로 덩굴식물의 수평 및 수직분포와 국내(남한) 자생 덩굴식물 종수 등에 관해 조사하였으며, 수직분포 조사지는 강원도의 설악산과 어답산, 겨익도의 광교산, 전라남북도와 경상남도에 걸쳐있는 지리산을 대상으로 식생자료를 검색하였다. 연구결과를 요약해보면 다음과 같다. 남한지역에 분포하는 덩굴식물 종류는 총 41과 95속 267종 이었고, 덩굴식물의 수평분포 특성은 위도가 낮아질수록 출현종수가 증가하였으며 고산지대와 북한지역의 북부지방을 제외한 우리나라의 거의 전지역이 덩굴식물 생육에 적당하다고 사료되었다. 또 덩굴식물의 수직분포 특성은 표고가 높아질수록 현저히 감소하였고 해발 1,500m이상에서는 거의 나타나지 않았는데 이러한 지역의 온량지수는 45이하에 해당되며, 동일한 고도라 하더라도 지지체가 되는 식물 군락의 종류에 따라 출현하는 덩굴식물의 종류는 상이하였다. 사면별로 덩굴식물의 출현종수에 차이가 있었으며, 남사면이 북사면에 비해 종다야성은 낮은 경향을 보였다.

• 한국어류학회지
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• 제27권4호
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• pp.310-316
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• 2015

본 연구는 동해 남부 연안해역 통발에서 채집된 어류 종조성의 계절 및 연간변동을 조사하였다. 어류 시료는 2005년에서 2008년까지 계절별로 채집하였다. 조사기간 동안 24과에 속하는 32종의 어류가 채집되었다. 우점종은 붕장어 (Conger myriaster), 미역치 (Paracentropogon rubripinnis), 꼼치 (Liparis tanakae), 쌍동가리 (Parapercis sexfasciata), 먹장어 (Eptatretus burgeri), 청어 (Clupea pallasii pallasii)였으며, 이들 6종은 총채집개체수의 91.9%를 차지하였다. 어류 군집의 출현종수, 개체수, 생체량, 다양도는 계절변동을 나타내었는데, 출현종수와 개체수는 2008년 8월에 가장 높았고, 생체량과 다양도는 2005년 8월에 가장 높았다. ANOSIM 분석 결과, 2008년 어류 종조성은 다른 년도와 유의한 차이를 나타내었다. 반면 계절별 채집 종조성은 유의한 차이를 보이지 않았다.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2019년도 추계학술대회
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• pp.24-24
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• 2019

Iris L. is a perennial genus comprising approximately 300 species worldwide, with the greatest number of endemic species occurring in Asia. Iris is one of the largest genera in the family Iridaceae and includes ca. 15 species native to Korea. Although chromosome number change, karyotype restructuring, and genome size variation play an important role in plant genome diversification, understanding the karyotype variation in Korean Iris species has been hampered by the wide range of base chromosome number (x = 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22) reported to date. This study documents the chromosome numbers, karyotype structure and genome size variation in Iris ruthenica K. Gawl., an endangered species in Korea obtained using classic Feulgen staining and flow cytometry. The chromosome number of all investigated plants from the nine populations was 2n = 42. All individuals studied possessed metacentric and submetacentric chromosomes. The genome size of the I. ruthenica in eight wild populations ranged from 2.39 pg/1C to 2.45 pg/1C ($2.42{\pm}0.02pg/1C$: $mean{\pm}SD$). This study provides the first report of genome size variation in Iris ruthenica in Korea. This study lays foundation for cytogenetic further analyses employing by fluorescence in situ hybridization (FISH) to better understand the chromosomal evolution in this species and in the whole genus.

• 한국환경생태학회지
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• 제26권2호
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• pp.247-256
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• 2012

본 연구는 선택되어진 지뢰지역과 습지조각의 산림성조류의 군집에 대하여 경관생태학적 가치를 평가하도록 하였다. 각각 면적이 다른 세 곳(8.5ha, 17.4ha, 40.6ha)의 지뢰지역과 산지지역의 세 개 비교지역의 조류상분석을 이용하여 평가하였다. 평균 산림성조류의 종수, 개체수, 종다양성, 종풍부도와 종균등도를 조각의 크기와 습지의 존재와 연결성과 같은 환경적 특성에 의하여 분석하였다. 군집 유사도지수는 실험군과 대조군 조사구사이를 비교하였다. 조류군집은 다음과 같이 요약되었다. 첫째, 63종의 조류가 조사되었으며, 최대개체수 합계는 828개체였다. 종다양성지수는 3.8이었으며, 종풍부도는 9.2, 종균등도는 93.3 이었다. 둘째, 작고 숲과 고립된 숲은 낮은 평균 종의 수와 개체수를 가졌지만, 소하천을 가진 작은 숲 조각은 개활수면이 없는 숲 조각에 비하여 높은 조류 밀도를 보였다. 셋째, 갈대습지를 가진 숲 조각은 단위면적당 조류 종의 수(/10ha), 단위면적당 개체수, 종다양도지수, 종풍부도와 종균등도에서 낮은 가치를 가진 것으로 평가되었다. 마지막으로, 군집 유사도지수는 소하천을 가진 작은 숲 조각은 다른 숲과 연결되어 있는 큰 산지 숲과 유사성이 높게 나타났다. 결과적으로, 저지대 숲 조각은 작은 면적에도 불구하고 다른 서식지와 연결되고 서식지가 넓은 산지의 숲 조각과 군집유사도가 비슷하였다. 따라서, 하천숲의 복원은 산림성조류의 군집에서 생물다양성을 향상시킬 것으로 제안한다.

• 한국수산과학회지
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• 제51권3호
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• pp.278-285
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• 2018

Monthly variation in species composition of fishes in the eelgrass bed of Jangpyeong in Tongyeong, Korea was determined using monthly samples from a seine net from May 2016 to April 2017. A total of 32 species, 2,042 individuals and 3,991.1 g of fishes were collected during the study period. The dominant species were Takifugu niphobles, Rudarius ercodes, Gymnogobius heptacanthus, Zoarchias glaber, Pholis nebulosi and Leucopsarion petersii. These species accounted for 79.5% of the total number of individuals. The fish assemblages in the eelgrass bed showed clear seasonal changes: the number of fish species increased in March and was highest in October, while the number of individuals increased in December and was highest in July.

• Ocean and Polar Research
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• 제39권1호
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• pp.13-21
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• 2017

Temporal changes in the number of zooplankton species are important information for understanding basic characteristics and species diversity in marine ecosystems. The aim of the present study was to estimate the optimal monitoring frequency (OMF) to guarantee and predict the minimum number of species occurrences for studies concerning marine ecosystems. The OMF is estimated using the temporal number of zooplankton species through bi-weekly monitoring of zooplankton species data according to operational taxonomic units in the Tongyoung coastal sea. The optimal model comprises two terms, a constant (optimal mean) and a cosine function with a one-year period. The confidence interval (CI) range of the model with monitoring frequency was estimated using a bootstrap method. The CI range was used as a reference to estimate the optimal monitoring frequency. In general, the minimum monitoring frequency (numbers per year) directly depends on the target (acceptable) estimation error. When the acceptable error (range of the CI) increases, the monitoring frequency decreases because the large acceptable error signals a rough estimation. If the acceptable error (unit: number value) of the number of the zooplankton species is set to 3, the minimum monitoring frequency (times per year) is 24. The residual distribution of the model followed a normal distribution. This model can be applied for the estimation of the minimal monitoring frequency that satisfies the target error bounds, as this model provides an estimation of the error of the zooplankton species numbers with monitoring frequencies.

• 한국수산과학회지
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• 제36권3호
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• pp.298-305
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• 2003

Seasonal variation in species composition of fish in the estuary of Saemangeum water in the western coast of Korea was determined using seasonal samples collected by an otter trawl from April 2001 to February 2002. Species compositions did not differ significantly among the 4 stations (p>0.05, Wilcoxon signed-rank test). The cumulative number of species and species diversity (H') approached asymptote after four 30-min trawl hauls. Therefore 30-min trawl samples from each of the four stations were pooled to represent each season. A total of 45 species 2758 individuals and 30,346.8 g of fish were collected during the study period. Of the fish collected Leiognathus nuchalis, Synechogobius hasta, Neosalanx jordani, Konosirus punctatus and Chaeturichthys stigmatias predominated in abundance accounting for $68\%$ of the total number of individuals. Seasonal variation of fish abundance showed a similar trend to those of the other western coastal waters of Korea. The resident species were collected only in spring and autumn. Number of species and biomass were highest in summer due to the catch of many migrating species. In winter catch amount was low, and only 7 species were collected.. Brackish water fishes were more abundant in the study area, and Johnius grypotus and Cynoglossus joyneri were not premominated compared to the other coastal waters. This difference in species compositions may be related to the lower salinity in this estuarine habitat than in the other western coastal waters of Korea.

• 환경정책연구
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• 제4권1호
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• pp.113-127
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• 2005

토지이용 강도가 높은 도시비오톱을 대상으로 조류다양성 확보를 위한 비오톱 면적지수의 활용방안에 대한 연구를 수행하였다. 이 연구의 목적은 비오톱 평가지표들사이의 상관관계를 살펴보고 조류다양성을 보호하기 위한 비오톱 평가지표를 개발하여 생태적으로 건전한 도시비오톱의 효과적인 복원방법을 계획하는 데 있다. 도시 비오톱에서 조류 다양성에 영향을 주는 평가지수의 분석을 위해서, 각각의 사이트에 대해 비오톱 면적, 곤충종수, 인접도로와의 거리, 비오톱 면적지수를 조사하였다. 결론적으로, 비오톱평가 지수들 사이의 상관관계는 다음과 같은 결과가 나타났다. 조류종수와 곤층종수 > 조류종수와 비오톱 면적지수 > 곤충종수와 비오톱 면적지수 다시말해, 조류다양성은 실질적으로 곤충종수와 비오톱 면적지수에 의해 영향을 받는다. 결과로부터 얻어진 등식은 조류종수는 6.124 $\times$ 비오톱면적지수 + 0.095 $\times$ 곤충종수 - 1.197 이다. 그러므로, 비오톱면적지수와 곤충을 위한 수직적 경관다양성이 유지된다면, 작은 면적의 비오톱이라 할지라도 도시지 역에서 조류다양성을 증진시키는 데 도움을 줄 수 있을 것이다.