통영해역에 서식하는 아므르불가사리의 분포 특성과 서식처에 따른 먹이 선호도 비교

백상규,윤성규,이순길,박흥식 한국수산과학회 2004 한국수산과학회지 Vol.37 No.6

This study examined distributional patterns of Asterias amurensis in Tongyeong, the central South Sea of Korea. The density of the sea star was estimated at 10 chosen sites in the inner and the outer parts of the Tongyeong coast from December 2000. The mean density of the species in this area was 2.4ind./m2. The seasonal surveys conducted at 3 arbitrary chosen sites (i.e., sea cage, reef and soft sediment) also showed that the abundance of the species at the sea cage site (density: 3.6ind./m2; biomass: 250.7gwwt/m2) was significantly higher than at the reef site (density: 1.7ind./m2; biomass: 63.5gwwt/m2) and the soft sediment site (density: 0.4ind./m2; biomass: 18.9gwwt/m2). Densities were higher at sea cages areas than at reefs and soft bottom sites. At sea cage site, A. amurensis population exhibited a strong aggregated distributional pattern. In contrast, at reef and soft bottom sites, A. amurensis population showed a random distributional pattern. The spatial difference in prey species and its abundance was the primary factor determining the spatial heterogeneity of the sea star in its behavior characteristics. Experiments on the feeding preference indicated that A. amurensis had a strong selectivity on its prey, but this selectivity varied between populations living in different sites. In particular, A. amurensis populations at the reef site showed a strong selectivity on various sessile and mobile animals living in reef areas, suggesting that these animal groups may play a role as “windows for the survival of A. amurensis”. These results suggest that the distribution of A. amurensis in Tongyeong is closely associated with abundance of prey species and the bottom composition.

해양환경 유해물질의 국가관리체계 재확립을 위한 정책 추진방향 검토

백상규,금지돈,이정석 환경독성보건학회 2019 한국독성학회 심포지움 및 학술발표회 Vol.2019 No.10

출납폐쇄기한 단축이 지방정부 예산이월에 미친 영향에 관한 연구

백상규,민기 한국지방재정학회 2020 한국지방재정논집 Vol.25 No.2

Local governments have been largely using expenditure budget carryover, even though it means a stop or a delay in public service during a specific fiscal year. Local governments get a cause for using expenditure budget carryover more often than before because the term of receipts and disbursements was shorten from February of next fiscal year to December of current fiscal year due to the revision of Local Fiscal Act in 2015. This study aims at analyzing the impact of receipts and disbursements term reduction on expenditure budget carryover and suggesting institutional alternative to reduce the budget carryover. Based on the findings from this study, the number and percentiles of expenditure budget carryovers are increased due to the reduction of receipts and disbursements term. Specifically, the lower tier of local governments which are less capable of managing budget has been affected by the shorten of receipts and disbursements term. In oder to the decrease of budget carryover, due for completion of local government budget in Local Accounting Act should be extended more than current period and the index of fiscal balance should include the budget carryover item. 예산이월은 공공서비스의 단절 또는 지연을 의미하는데, 지방정부는 예산이월제도를 광범위하고 대규모로 활용하고 있다. 여기에 더해 2015년부터 지방정부 출납폐쇄기한이 다음연도 2월말에서 당해연도 12월말로 단축됨에 따라, 지방정부는 집행기간부족에 따른 예산이월의 명분을 얻게 되었다. 본 연구의 목적은 출납폐쇄기한 단축이 지방정부 예산이월에 미친 영향을 분석하고 제도적 대안을 제시하는 데 있다. 분석 결과 출납폐쇄기한 단축으로 인해서 지방정부의 이월률과 단위이월건수는 증가하였는데, 하위 계층의 지방정부와 재정운용능력이 낮은 지방정부에서 더 많은 영향을 받고 있다. 또한 이월규모 증가가 일시적일 것이라는 중앙정부의 전망과 달리, 지방정부의 이월규모는 출납폐쇄기한 단축 이후 점증하고 있다. 출납폐쇄기한 단축을 전제한다는 입장에서 제도변경에 따른 역기능을 개선하기 위해서 「지방회계법」의 출납정리기한을 연장하고 조건을 완화하는 한편, 지방재정 관련 지표 중 이월항목을 신설하고 재정수지 지표를 보완할 필요가 있다. 그리고 지방재정운용 감독을 강화하기 위해 재정정보 공개에 관한 기준을 수립할 필요가 있다.

우리나라 해양과학기술정책의 현재와 미래(기술정립에서 융합을 통한 역량확산 체제로의 전환)

백상규 한국행정학회 2017 한국행정학회 학술발표논문집 Vol.2017 No.하계

흰쥐의 삼차신경절에서 Transient receptor potential ankyrin 1 (TRPA1)의 발현 특성에 관한 연구

백상규,나연경,김윤숙,Paik, Sang-Kyoo,Na, Yeon-Kyung,Kim, Yun-Sook 한국현미경학회 2012 Applied microscopy Vol.42 No.1

Transient receptor potential ankyrin 1 (TRPA1), responding to noxious cold (${\leq}17^{\circ}C$) and pungent compounds, is implicated in nociception, but little is known about the coexpression of TRPA1 and other channels or receptors involved in the nociception in craniofacial regions. To address this issue, we characterized the TRPA1-immunopositive (+) neurons in the rat trigeminal ganglion (TG) and investigated their colocalization with other proteins known to be expressed in nociceptive neurons, such as transient receptor potential vanilloid (TRPV1) and $P2X_3$ receptor, using light microscopic immunofluorescence labeling method with TRPA1 and TRPV1 or $P2X_3$ antisera. The majority of TRPA1+ neurons costained for TRPV1 (TRPV1+/TRPA1+; 58.8%, 328/558) and 41.2% only expressed TRPA1 but not TRPV1. The TRPV1+/TRPA1+ neurons were small and medium sized. In addition, we investigated the colocalization of TRPA1 with $P2X_3$, a nonselective cation channel activated by ATP that may be released in the extracellular space as a result of tissue damage and inflammation. Among all TRPA1+ TG neurons, 26.1% (310/1186) costained for $P2X_3$, whereas 73.9% (876/1186) of TRPA1+ neurons did not coexpress $P2X_3$. $P2X_3$+/TRPA1+ neurons were predominantly small and medium sized. These results suggest that TRPA1+ neurons coexpressing TRPV1 or $P2X_3$ are involved in specific roles in the transmission and processing of orofacial nociceptive information by noxious cold, heat, and inflammation.

지방정부 유형별 예산편성 행태에 관한 연구

백상규,민기 한국지방재정학회 2015 한국지방재정학회 세미나자료집 Vol.2015 No.7

진해만 주변 해역의 대형저서동물 군집구조

백상규,윤성규,PAIK Sang Gyu,YUN Sung Gyu 한국수산과학회 2000 한국수산과학회지 Vol.33 No.6

Community structure of macrobenthos was studied in Chinhae Bay, a southern coastal area of Korea. Sampling was conducted bimonthly using a Smith-McIntyre grab ($0.05 m^2$) at eight stations from January to November, 1998. A total of 237 species were sampled. It was comprised of annelids ($80 spp. 33.8{\%}$), arthropods (80 spp.), molluscs (47 spp.), echinoderms (16 spp,) and others, Mean density of individual was $1,939 ind./m^2$ and mean biomass was $171.6 gwwt/m^2$. Annelids were a density-dominant faunal group with a mean density of $1,533 ind./m^2$ which occupied $79.0{\%}$ of the total individual of benthic animals. Molluscs were represented as a biomass-dominant group with a mean biomass of $95.9 gwwt/m^2$ ($55.9{\%}$ of total biomass). The major density-dominant species were a bivalve Theora fratilis ($110 ind./m^2$) and five species of polychaetes, Lumbrineris longifolia ($417 ind./m^2$), Chaetozone setosa ($145 ind./m^2$), Sigambra tentaculata ($128 ind./m^2$), Cirratulus cirratus ($128 ind./m^2$), and Paraprionospio pinnata ($103 ind./m^2$). Cluster analysis showed that the study area could be divided into two station groups and two stations. According to the feeding guild of polychaetes, four feeding guilds were found, and the major ones were surface deposit-feeders, burrowing deposit-feeders, surface suspension-feeders, carnivore.

동해 후포주변 사질조하대에 서식하는 대형저서동물 군집의 분포 특성

백상규,강래선,전재옥,이재학,윤성규 한국해양과학기술원 2007 Ocean and Polar Research Vol.29 No.2

Distribution patterns of sandy bottom macrobenthic communities were studied around the Hupo coastal area. The seasonal surveys were conducted at 15 chosen sites within a depth range of 10 to 50 m along 10 km of the coastline using a Smith-McIntyre grab (0.05 m2) in 2005. Overall depth distribution following the direction of the offshore become deeper parallel to the coastline. A total of 319 macrobenthic species were sampled with a mean density of 1,972 ind./m2, and mean biomass was 82.5 wet-weight g/m2. The major individual-dominant species were three polychaetes Spiophanes bombyx (436 ind./m2), Scoletoma longifolia (250 ind./m2) and Magelona japonica (170 ind./m2), and bivalve Adontorhina subquadrata (73 ind./m2). Cluster analysis and non-metric multidimensional scaling (nMDS) analysis based on Bray-Curtis similarity identified 2 major station groups which corresponded to macrobenthic faunal assemblages and their characteristic species. In addition, environmental conditions were significantly different between station groups. Group I contained mostly 20 and 50 m deep sites and was associated with sandy mud. Group I was characterized by high abundance of S. bombyx, S. longifolia, A. subquadrata. It was divided into two sub-groups (I-I and I-II) in relation to depth. Sub-group I-I was associated with deeper sites than sub-group I-II. Group II included mostly inshore area shallower than 15 m and was associated with coarse and medium sand. Group II was characterized by Lumbrinerides hayashii and Urothoe grimaldii japonica.

우리나라 서,남해안에서 출현하는 다모류를 통한 해역의 생태등급 산정

백상규,박흥식,윤성규,제종길 한국습지학회 2005 한국습지학회지 Vol.7 No.2

우리나라 서,남해안에 위치한 59개 갯벌의 다모류 출현 양상을 바탕으로 갯벌의 생태등급을 평가하였다. 갯벌의 생태등급 평가는 다모류의 분포밀도, 다양성, 풍부성, 자원적 가치, 종 위험도 등의 생물학적인 자료와 해안선의 자연성, 훼손 가능성, 지형경관 등의 인문지리학적인 면을 평가기준으로 하였다. 조사지역에서 출현한 다모류는 총 14목 37과 181종이었으며, 각 조사지역의 생태등급은 다음과 같다. I 등급 4개 지역(충남 학암포, 전남 우이도와 거문도, 경남 비진도와 매물도), II 등급 30개 지역, III 등급 19개 지역, IV 등급 4개 지역이었다. 이번 조사 결과 생태등급 기준에 대한 보다 면밀한 검토가 필요할 것으로 생각되며, 선정된 각 해역의 생태등급에 따른 정기적인 생물 조사 및 생태계 위협요인의 제거와 같은 실질적인 관리 방안을 마련하여야 할 것으로 판단된다. 특히 생물상 및 자연성이 높은 생태등급 지역의 경우 보다 적극적인 보전 노력이 요구된다.

Developmental Duration and Morphology of the Sea Star Asterias amurensis, in Tongyeong, Korea

백상규,박흥식,윤성규,이순길 한국해양과학기술원 2005 Ocean science journal Vol.40 No.3

The process of embryogenesis and larval development of the asteroid sea star Asterias amurensis (Ltken) was observed, with special attention paid to morphological change and larval duration. In reproductive season, mature sea stars were collected under floating net cages, located in Tongyeong, southern Korea. The mature eggs are 138mm in average diameter, semi-translucent and orange in color, sperms in good condition appear light cream to white-gray in color. Embryos develop through the holoblastic equal cleavage stage and a wrinkled blastula stage that lasts about 9 hours after fertilization. Gastrulae bearing an expanded archenteron hatch from the fertilization envelope 22 hours after fertilization. At the end of gastrulation, rudiments of the left and right coelom are formed. By day 2, larvae possess complete alimentary canal and begin to feed. At this stage, the larva is called early bipinnaria. In 6-day-old larvae, the pre- and post- oral ciliated bands form complete circuits and the bipinnarial processes start to develop. By day 12, the lateral and anterior projection of the larval wall processes along the ciliated bands begins to thicken and curl, and the ciliated bands become more prominent. By day 32, early brachiolaria are presented with three pairs of brachiolar arms. Advanced brachiolaria with a well-developed brachiolar complex (three pairs of brachia and central adhesive disc) occur 6 weeks after fertilization. In the field, spawning of the sea star was observed in April to May, settlement form larvae and just settlements seem to occur from June to July, and early juveniles occur from August to September. Although we had not described the end of brachiolaria stage, it can be tentatively estimated that the duration of the pelagic stage of A. amurensis is 40 to 50 days.