• 제목/요약/키워드: Living Resources

검색결과 983건 처리시간 0.038초

양식산 볼락, Sebastes inermis Cuvier의 성장 특성 (Growth Characteristics of Cultured Dark-Banded Rockfish, Sebastes inermis Cuvier)

  • 최희정;홍경표;오승용;노충환;박용주;명정구;김종만;허준욱;장창익;박인석
    • 한국양식학회지
    • /
    • 제18권3호
    • /
    • pp.147-153
    • /
    • 2005
  • 본 연구의 목적은 양식산 볼락, Sebastes inermis Cuvier의 자 치어 시기부터 성어에 이르기까지의 성장 특성을 조사하여, 본 종에 대한 수산생물학적 연구 및 양식기술개발을 위한 기초 자료를 제공하는데 있다. 이를 위하여 250마리의 어미로부터 생산된 동일한 일령의 자어를 대상으로 산출 직후부터 1,350일째까지의 성장 특성을 조사하였다. 볼락에 있어서 산출 후 경과 일수(days after parturition, X)에 대한 전장(total length, TL)의 성장은 $TL=0.0217X\;(r^2=0.8867)$, 그리고 체중(body weight, BW)의 성장은 $BW=0.0001X^2+0.0713X\;(r^2=0.9858)$의 관계가 있었다. 또한 전장에 대한 체중의 상대성장은 $BW=0.0072TL^{3.4373}\;(r^2=0.9945)$의 관계가 있는 것으로 나타났다. 산출 후 경과일수(X)에 따른 눈지름(eye diameter, ED) 성장은 $ED=-2E-5X^2+0.0326X$ ($r^2=0.9886;$ X, 산출 후 기일)의 관계식에 따랐다. 전장에 대한 두장(head length, HL), 주둥이길이 (snout length, PHL) 눈지름(ED), 후두부길이(postorbital head length, PHL)와의 관계는 각각 $HL=0.2652TL\;(r^2=0.9758),\;SL=0.0613TL\;(r^2=0.9602),\;ED=0.0752TL\;(r^2=0.9715)$, 및 $PHL=0.2652TL\;(r^2=0.9501)$로 나타났다.

농촌 생활권 기초생활서비스 항목 설정 및 공간데이터 구축을 위한 기초연구 (Deriving Basic Living Service Items and Establishing Spatial Data in Rural Areas)

  • 김수연;김상범
    • 한국농촌건축학회논문집
    • /
    • 제24권3호
    • /
    • pp.39-46
    • /
    • 2022
  • This study aims to derive basic living service facility items in rural areas and construct related spatial data. To do this, a literature review on the laws and systems related to the residential environment and services in rural areas, rural spatial planning, and the 'Rural Convention' strategic plan reports for the Jeolla and Gyeongsang Region in 2021 was conducted. Primary data collection and review on the list of basic living service items in rural areas derived from the analysis were conducted. After data collection, 12 sectors and 44 types of rural basic living service items were derived; the data selection was carried out based on the clarity of the subject of data management, whether it was established nationwide, whether it was disclosed and provided, whether it was periodically updated, and whether it was an underlying law. Afterwards, data on the derived rural basic living service items were constructed. Afterwards, spatial data on the derived rural basic living service items were constructed. Because open data provided through various institutions were employed, data structure unification such as data attribute values and code names was needed, and abnormal data such as address errors and omissions were refined. After that, the data provided in text form was converted into spatial data through geocoding, and through comparative review of the distribution status of the converted data and the provided address, spatial data related to rural basic living services were finally constructed for about 540,000 cases. Finally, implications for data construction for diagnosing rural living areas were derived through the data collection and construction process. The derived implications include data unification, data update system establishment, the establishment of attribute values necessary for rural living area diagnosis and spatial planning, data establishment plan for facilities that provide various services, rural living area analysis method, and diagnostic index development. This study is meaningful in that it laid the foundation for data-based rural area diagnosis and rural planning, by selecting the basic rural living service items, and constructing spatial data on the selected items.

제주도 서쪽 연안에서 음향자원 조사를 이용한 저층 어군의 시.공간 분포 (Hydroacoustic Survey of Spatio-Temporal Distribution of Demersal Fish Aggregations Near the West Coast of Jeju Island, Korea)

  • 강돈혁;임양재;이창원;유준택;명정구
    • Ocean and Polar Research
    • /
    • 제30권2호
    • /
    • pp.181-191
    • /
    • 2008
  • This study aims at assessment of spatio-temporal distribution of demersal fish aggregations near the west coast of Jeju Island using hydroacoustic survey. A 200 kHz split beam transducer attached to a small towed body was used for all acoustic investigations. The received acoustic data were in situ acoustic target strength (TS, dB) for all pings and nautical area scattering coefficient(NASC, $m^2/mile^2$) for 0.1 mile along 12 acoustic transects. Demersal fish aggregations are distributed around the coastal slope having 20 to 30 m depth throughout all seasons. The concentration is higher during the summer season. With regard spatial distribution, higher demersal fish aggregations have been detected near the West coast of Shinchang and especially near Chagwi-do. Pelagic fish aggregations were higher to the south of Chagwi-do during the spring season. Additionally, standing stock of demersal fish aggregations from the NASC data, TS function, and length-weight function of dominant species was estimated as follows: 3.2 ton (CV 21.8%) in December 2006, 17.9 ton (CV 21.6%) in April 2007, 30.8 ton (CV 17.8%) in June 2007, and 22.5 ton (CV 24.2%) in October 2007. The application of hydroacoustic methods offers a new approach to understanding spatiotemporal structure and estimate the biomass of demersal fish aggregations in the coastal area. And the results can be made up limitations of qualitative analysis through net and diving for fisheries resources survey in coastal area.

자연자원 회복을 위한 감태(Ecklonia cava Kjellman)의 인공양식기법 (Cultivation Technique of Ecklonia cava Kjellman for Restoration of Natural Resources)

  • 황은경;황일기;박은정;공용근;박찬선
    • 환경생물
    • /
    • 제31권4호
    • /
    • pp.347-352
    • /
    • 2013
  • 감태의 인공채묘시 유주자 및 유리배우체를 채묘하여 양성 생장도를 비교하므로써, 유리배우체의 대량양식 이용 가능성을 시험하였다. 2008년 11월에 유주자 및 유리배우체를 채묘한 채묘틀을 이용하여 2009년 5월부터 10월까지 전남 완도군 약산면 시험어장에서 양성 생장도를 비교하였다. 유주자 및 유리배우체 채묘 실험구에서 감태 엽체의 엽장과 생체량 등은 유의한 차이를 보이지 않았다.

공익형 농촌 생활서비스 접근성 분석 (Analysis of Accessibility of Public interest related Living Service in Rural Area)

  • 신민지;박미정;전정배;박로운;김상범
    • 농촌계획
    • /
    • 제25권3호
    • /
    • pp.19-27
    • /
    • 2019
  • The purpose of this study was to determine whether public services in rural areas performed the functions of public interest value that benefited all residents of rural areas. Therefore, the results were derived through spatial distribution and population characteristics analysis at the level of basic living service facilities. As a result, the status of spatial distribution in the Favorable and Vulnerable areas of rural villages and the status of population distribution in the vulnerable areas was analyzed for retail, child care and medical facilities. In the case of retail facilities, it was found that more than 80.0% of the country's farming villages were distributed in the favorable areas that could be reached within 15 minutes. In the case of child care facilities, 91.5% of the total number of favorable areas could be reached within 15 minutes, and the distribution of child care facilities nationwide was deemed proper. In the case of medical facilities, 90.8% or more villages could be reached within 15 minutes of travel time as a lawmaker, and in the case of hospitals and emergency medical services, 92.7% of hospitals and 68.2% of emergency medical services were analyzed as favorable areas. Through these results, the government intends to establish objective spatial data in rural areas to provide basic information on policy directions and contribute to planning.

농촌자원에 대한 다원화된 인식구조 비교 연구 (A Comparative Study of Pluralistic Valuing Structure on Rural Resources)

  • 최수명;황한철;한경수
    • 한국농공학회지
    • /
    • 제38권4호
    • /
    • pp.99-109
    • /
    • 1996
  • This study, a preliminary one to construction of standardized rural resources evaluation system, aimed at catching the valuing structure of rural and urban residents cn rural resources through interview. The questionnaire employed in our surveys was focussed on; opinion about the advantages and disadvantages of living in rural areas, usual impression on rural life style, viewpoint on preservation of cultural heritages and conservation of natural environments, priority item listing for improvement/development of rural village. Generally, regardless of interviewee's personal characteristics, the peaceful and comfortable life in the lovely/clean environment was indicated as a representative advantage of rural life. However, in minor aspects, there were recognizable differences by their living and thinking patterns, so, a deep and systematic study should be progressed to harmonize or integrate the pluralistic valuing trends on rural affairs in future. The valuing structure on rural resources from this study showed much more varieties according to age-and occupation-groups, while young generation strongly hold self-orii-ented and ambiguous thinking. Because this trend will grow more deeply and widely in future, the resoruces evaluation system for rural purposes should be established as a rational base for decision-making on rural development strategies.

  • PDF

북동 태평양 C-C 해역에 서식하는 중형저서동물 군집 (Meiobenthic Communities in the Deep-sea Sediment of the Clarion-Clipperton Fracture Zone in the Northeast Pacific)

  • 김동성;민원기;이경용;김기현
    • Ocean and Polar Research
    • /
    • 제26권2호
    • /
    • pp.265-272
    • /
    • 2004
  • This study was conducted to investigate the community structure and distributional pattern of meiobenthos in the deep-sea bottom of the Clarion-Clipperton Fracture Zone of northeastern Pacific during July 2001. Examination of sediment samples collected on the eight survey station showed that there were 10 different types of meiobenthos. The most abundant meiobenthic animals were nematodes in all stations. Sarcomastigophorans, benthic harpacticoids were next abundant meiobenthos. Vertical distribution of meiobenthic animals showed the highest individual numbers in the surface sediment layers of 0-1 cm depth and showed more steep decreasing trend as sediment gets deeper on the stations of high latitude located in $16-17^{\circ}N$. Horizontal distribution of meiobenthic animal in the study area within CCFZ showed high densities of meiobenthos at the stations had few manganese nodules on their sediment surface in the site of low latitude. For size distribution analyses showed that animals which fit into the sieve mesh size of 0.063 mm were abundant.

경북지역 테마마을 방문객의 식사관련 서비스 품질 기대와 만족에 관한 연구 (Visitors' Expectation and Satisfaction with Foodservice Qualities in the Rural Theme Villages of Gyeongsangbuk-do)

  • 김양숙;이인선;김행란;최정숙
    • 한국지역사회생활과학회지
    • /
    • 제17권1호
    • /
    • pp.67-77
    • /
    • 2006
  • This study was conducted to investigate the degree of visitors' expectation and satisfaction with foodservice qualities in the rural theme villages. The subjects were 210 participants in the rural theme villages of Gyeongsangbuk-do. The results of this study consisted of three major parts: sociodemographic characteristics, visitors' visiting behavior, the analysis of visitors' expectation and satisfaction. 98.8% of the subjects were accompanied by children and most respondents had the intention of revisiting. The foodservice qualities with the highest expectation scores were 'food freshness' (3.76 point) and those with the highest satisfaction scores were 'friendly employee' (4.14 point). According to the overall attributes, visitors' satisfaction was higher than expectation. 'Food taste' and 'Local food' were the relatively most important attributes for overall satisfaction in the rural theme village.

  • PDF