• 생태와환경
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• 제49권2호
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• pp.130-141
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• 2016

This study was conducted to elucidate the structure of river ecosystem in the watershed of the Seom River and Hoengseong Reservoir located in Hoengseong of Kangwon Province from February to October 2007. Topics of the survey were mainly rainfall, discharge, water quality in abiotic factors and attached algae, benthic macroinvertebrates, fish, birds and mammals of flora and fauna in a biotic factors, respectively. Specifically, the Seom River could be seen as a typical flow rate of the stream is controlled to the effect of the dam. Basic water qualities were great to seasonal effects, it was relatively clean. Diatom Achnanthes, Cymbella, Gomphonema, and Navicula were distributed predominantly in the periphytic algae. Benthic macroinvertebrates were mostly aquatic insects and freshwater shellfish, the aquatic insects were abundant Ephemeroptera and Trichoptera. Freshwater fish was the dominant Zacco platypus, fish species varied toward the downstream. Birds were mainly observed in four species, and species Egretta garzetta, which was distributed in a wide area of the Seom River. In mammals, Lutra lutra of Mustelidae was identified that the number of inhabit widely. In aspects of the ecological trophic level, the Seom River was maintained at a relatively stable state in the producer and the consumer relationship. The results of this study will expected to be utilized as a useful data for understanding the structure and function of the lotic and lentic ecosystems.

• 한국수산과학회지
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• 제47권2호
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• pp.160-167
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• 2014

The feeding habits of Tridentiger bifasciatus were studied using 733 individuals collected in the tidal creek at Sangnae-ri, Suncheon, Korea, using a push net, monthly, from April 2011 to March 2012. The standard length (SL) of the specimens ranged from 1.5 to 8.2 cm. The stomach content analysis indicated that T. bifasciatus consumed mainly amphipods, such as Corophium sp., while copepods, polychaetes, and shrimps were other important prey species. In addition T. bifasciatus ate small quantities of crab larvae, fish, gastropod larvae, and insects. T. bifasciatus is a generalist that feeds on various zoobenthos, including fish. T. bifasciatus underwent an ontogenetic dietary shift. Smaller individuals (1-2 cm SL) fed mainly on amphipods. The proportion of amphipods decreased as body size increased, whereas the consumption of polychaetes increased gradually. The seasonal variation in the diet composition of T. bifasciatus was significant. Insects were common prey during summer, while the amounts of other prey, including polychaetes, were similar during spring, autumn, and winter.

• 생태와환경
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• 제37권2호통권107호
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• pp.137-148
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• 2004

Merritt-Cummins의 체계에 기초하여 한국에 정리 ${\cdot}$ 보고된 수서곤충류(10목 96과 257속)를 6개 섭식기능군 유형의 분석과 검증을 실시하였다. 총 257개 속 가운데포식자인 섭식기능군이 122개 (47%)속으로 가장 많았으며, 두 번째와 세 번째로 높은 점유율을 나타낸 섭식기능군은 gathering-collectors(33개 속, 13%)와 shredders(21개 속,8%)로 나타났다. 그 다음으로는 Scrapers가 20개 (7%) 속으로 나타났으며, filtering-collectors (12개 속,5%)와 plant-piercers(6개 속, 2%)의 순으로 나타났다. 그러나 7개 목의 총 43개 속에 해당하는 분류군은 섭식기능군이 밝혀지지 않았다. 생물군집의 안정성을 유지하는데 있어 섭식기능군의 기능을 규명하기 위하여 속 수준에서의 상대적 저항력과 회복력이 분석되었다. 그 결과 섭식기능군 gathering-collectors와 scrapers는 군집 내에서 각각 개척자와 기능적 중간자로서의 역할을 수행하고 있음이 규명되었다. 상대적 저항력과 회복력의 등급화의 실질적은 적용은 하천생태계에 대한 포괄적인 연구의 수행에 높은 응용성을 지니는 것으로 분석되었다.

• 한국어류학회지
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• 제20권1호
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• pp.36-44
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• 2008

2006년부터 2007년까지 옥정호에 도입된 외래어종 배스 Micropterus salmoides를 채집하여 식성을 조사하였다. 채집된 배스의 체장범위는 13~511 mm (n= 419)였다. 배스는 강한 육식성 어종으로 주로 어류를 섭식하였으며 그밖에 수서곤충과 새우류 등을 섭식하였다. 배스는 성장하면서 식성이 변하였는데, 10~20mm는 주로 지각류를 섭식하였고, 30~50 mm은 수서곤충과 소형어류를, 50 mm 이상의 개체는 피라미, 치리, 밀어와 같은 어류를 주로 섭식하였다. 1981년부터 옥정호의 어류상을 분석한 결과, 강한 육식성 어종인 배스의 도입은 옥정호 토착종의 다양도와 출현비율의 감소를 초래하는 것으로 판단된다.

• 한국해양학회지:바다
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• 제12권2호
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• pp.86-93
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• 2007

양양 남대천에 서식하는 연어 치어의 먹이섭식 생태조사를 위해 환경 중 수서곤충 군집과 연어(Oncorhunchus keta) 치어의 위내용물을 분석하였다. 양양 남대천에 서식하는 수서곤충은 모두 6목 25과 52종으로, 개체수에 있어서는 파리목(Diptera)이 가장 많은 전체의 91.7%를 차지하였으며, 하루살이목(Ephemeroptera)이 3.6%, 날도래목(Tripchoptera)이 3.3%, 강도래목(Plecoptera)이 1.3% 등의 순으로 나타났다. 생중량은 파리목이 전체의 40.9%, 날도래목이 40.3%, 하루살이목이 14.8%, 강도래목이 2.6% 등의 순이었다. 남대천의 수서곤충상과 연어 치어의 위내용물은 개체수나 중량에 있어 대부분 비슷하여 먹이 선택성은 거의 없이 입의 크기에 맞는 모든 살아있는 생물을 섭식하였다. 동소서식어종의 위내용물을 분석한 결과 연어 치어와 가장 유사한 위내용물을 보인 종은 산천어의 치어였다. 연어 치어와 동소적으로 서식하는 어종들의 먹이생물을 분석한 본 연구 결과는 향후 우리나라 연어 치어 방류사업에 있어 하천 수용력에 대한 기초 자료를 제공할 것이다.

• 한국환경생태학회지
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• 제38권4호
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• pp.367-374
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• 2024

동사리의 식성 분석을 위해 자호천에서 2022년 3월부터 2022년 11월까지 채집을 하였고 크기는 연령별로(1년생, 2년생, 3년생 이상)로 구분하였다. 먹이생물은 환형동물(Annelida) 환대강(Clitellata)의 가시지렁이목(Haplotaxida), 절지동물(Arthropoda, 개체수 96.53%) 갑각강(Malacostraca, 연갑강)의 등각목(Isopoda), 단각목(Amphipoda), 십각목(Decapoda), 수서곤충(Aquatic insect)에 속하는 하루살이목(Ephemeroptera), 강도래목(Plecoptera), 딱정벌레목(Coleoptera), 파리목(Diptera), 날도래목(Trichoptera), 척추동물에 속하는 어류 등 이었다. 수서곤충, 갑각류, 어류 등을 주로 섭식하였으며 수서곤충이 개체수에 있어 82.32%, 생체량은 46.33%, 상대중요성지수는 80.84%로 가장 중요한 먹이원이었다. 섭식된 어류 중 꺽지(Coreoperca herzi)와 참갈겨니(Zacco koreanus) 치어가 풍부하였고 동종포식(cannibalism)으로 동사리 치어도 섭식하였다. 식성은 육식성 이었으며 먹이 섭취 특성과 형태는 육식포식자(stalker)에 속하였다. 전장이 증가함에 따라 섭식한 먹이의 생체량에 있어 파리류가 점진적으로 감소하였고 먹이 크기가 큰 어류가 증가하는 먹이전환이 발생하였다. 봄에는 먹이생물 중 어류(40.79%), 하루살이류(29.17%), 등각류(13.63%) 등을 주로 섭식하였고 여름에는 어류(52.65%), 하루살이류(23.27%), 단각류(6.12%) 등이 풍부하였고 가을에는 하루살이류(36.83%), 어류(23.99%), 날도래류(23.49%) 등을 많이 섭식하였다.

• 한국환경복원기술학회지
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• 제20권5호
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• pp.59-66
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• 2017

Preeminent water treatment plans are essential to preserve the water quality of aquatic biotopes. Previous studies have not been sufficient to provide cost-effective maintenance method since they focused only on the purification of deteriorated water that requires a continuous supply of clean water. This study proposes an economical method of water quality maintenance using water treatment media block constructed vertically using porous ceramics, zeolite, and river pebble. The water treatment media block does not require a separate purification area because it functions as a purifier within the ecological pond which can maximize the biotope area. To evaluate the performance of the water treatment media block, we longitudinally tracked the change of water quality indicators (pH, TDS, COND, DO, T-P, T-N, COD) suggested by Water Environment Standards, Ministry of Environment, Republic of Korea. We compared the water quality of one control (A: general ecological pond composition method of the laminated structure) and two experimental groups (B: a combination of aquatic plants and a water treatment media block, C: a water treatment media block only). As a result, we confirmed that the water treatment media block is an efficient and economical method to maintaining the water quality of the ecological pond for a long time. The water treatment media block will be a great help in providing a better aquatic biotope space for aquatic insects and fishes living in clear water.

• 환경위생공학
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• 제16권3호
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• pp.62-71
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• 2001

The present study was performed to examine the community structure of benthic macroinvertebrates in the provincial park of Mt. Daedun and its nearby region. Sampling was conducted two times in May.June and October.November, 2000. Main two areas are Mt. Anpyong (470.0m) and Mt. Daedun (877.0m) area. Total taxa of benthic macroinvertebrates were 111 species, 47 families, 15 orders, 6 classes in 4 phyla. Aquatic insects were composed of 29 species in ephemeroptera, 10 species in odonata, 7 species in plecoptera, 2 species in hemiptera, 2 species in megaloptera, 23 species trichuptera, 6 species in coleoptera and 17 species in diptera. Other non-insects were composed of 1 species in platyhelminthes, 8 species in gastropoda, 2 species in oligochaeta, 3 species in hirudinea and 1 species in crustacea. Ephemeroptera, trichoptera and plecoptera as indicators in clean water were very abundantly. Occurrence species at each surrey area was 77 species at Mt. Anpyong area and 89 species at Mt. Daedun area, respectively. Mean values of species diversity indices were 3.04 and 2.69, respectively. According to the saprobic system based on the species diversity indices of benthic macroinvertebrates, Mt. Anpyong region are determined as polysaprobic area or ${\beta}-mesosaprobic$ area and Mt. Daedun region are determined as polysaprobic area, $\beta-mesosaprobic$ area or ${\alpha}-mesosaprobic$ area.

• 한국환경보건학회지
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• 제28권2호
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• pp.149-160
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• 2002

Analysis of benthic macroinvertebrate community structure and biological estimation of water quality by the benthic macroinvertebrates from the Mt. Myungji(1267m), Mt. Kalbong(840m), Mt. Daegeum(704m) and Mt. Jubal(489m) region of Gapyung-gun, Kyunggi-do were investigated from April to November, 2001. Total taxa of benthic macroinvertebrates were 105 species, 38 families, 13 orders, 5 classes in 4 phyla. Aquatic insects were 33 species in ephemeroptera, 5 species in odonata, 13 species in plecoptera, 2 species in hemiptera, 1 species in megaloptera, 27 species in trichoptera, 3 species in coleoptera and 13 species in diptera, respectively. Non-insects were 1 species in platyhelminthes, 5 species in gastropoda, 1 species in oligochaeta, 1 species in crustacea, respectively. Ephemeroptera, trichoptera and plecoptera as indicators in clean water were very abundantly. Occurrence species at each survey area was 67 species at Mt. Myungji and 69 species at Mt. Kalbong, 48 species at Mt. Daege.um and 47 species at Mt. Jubal, respectively. Mean species diversity indices at Mt. Myungji, Mt. Kalbong, Mt. Daegeum and Mt. Jubal were 3.30, 3.33, 2.59 and 3.43, respectively. According to the saprobic system based on the species diversity indices of benthic macroinvertebrates, Mt. Myungji, Mt. Kalbong and Mt. Jubal are determined as Limnosaprobic area, respectively, but Mt. Daegeum is determined as $\beta$-mesosaprobic area.

• 농촌계획
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• 제27권2호
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• pp.49-58
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• 2021

Rural and agricultural landscapes are important forms of land use in maintaining biodiversity. In addition humans are provided with various public functions from ecosystems and agricultural ecosystems. But the creation of a facility horticultural complex can be a space that can undermine the public interest function of the agricultural ecosystem. Therefore, this study aims to quantify the function of ecosystem services that land use changes affect biodiversity in Korea's rice paddy fields. The area subject to the study was selected as the largest agricultural complex in Korea due to rice paddy fields and land use changes, and field agriculture was also carried out simultaneously. The survey was conducted only in the fields of vegetation, insects, amphibians, and birds, four areas of biodiversity that are believed to have a high impact on changes in land use in agricultural landscapes. The valuation of ecosystem services in four areas of biodiversity derived from this study was evaluated as non-market value. As a result of quantitative evaluation, about 25 species of vegetation were reduced due to changes in land use. The diversity of about 40 species of aquatic insects that inhabit rice paddies among insects has disappeared due to the creation of a horticultural complex. Birds and amphibian reptiles were also found to have decreased diversity and populations. This research is expected to be used in various ways to develop policies to enhance ecosystem service functions.