한국해양학회지:바다 (The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY)

  • 제24권1호
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  • Pages.170-186
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  • 2019
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  • 1226-2978(pISSN)
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  • 2671-8820(eISSN)
한국해양학회 (The Korean Society of Oceanography)
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이상치 검증을 이용한 한반도 연안생태계의 배경 농도 및 관리 항목 도출에 대한 예비 연구

A Preliminary Study on the Establishment of Background Levels and Management Targets in the Coastal Ecosystem of Korean Peninsula Using Outlier Test

  • 투고 : 2019.01.10
  • 심사 : 2019.02.18
  • 발행 : 2019.02.28
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⟨ 이전 논문 다음 논문 ⟩

초록

해양생태계조사는 많은 항목을 다양한 장소로부터 다양한 시기에 조사/분석한다. 따라서 다항목의 복잡한 생태 자료를 효과적으로 분석하기는 매우 어려우며, 또한 자료 분석을 통하여 생태계의 현황을 파악하고, 문제점을 진단하기는 더욱 어렵다. 따라서 본 논문은 생태 조사 자료의 분포 특성과 이상치 분석을 통하여 복잡한 생태 자료의 합리적 해석에 대한 예시를 제시하고자한다. 주요 연구 내용은 각 생태 자료의 분포 특성을 고려한 한반도 연안의 생태 요소별 배경 농도 도출과 생태계 모니터링 지시자 도출 및 적응적 관리 체제 구축이다. 본 논문에 이용된 자료는 해양수산부와 해양환경공단이 주관하는 국가해양생태계종합조사의 연안생태조사 자료를 이용하였으며, 주요인용 시기는 2015~2017년 자료이다. 본 논문은 상기 과정을 정립하는 예비 연구이며, 국가해양생태계종합조사 중 연안생태조사가 한반도 전 연안에서 총 3회가 완료되는 시점인 2020년 이후에 연안생태계의 생태 요소별 배경 농도 및 관리 방안에 대한 최종 결과가 도출될 예정이다.

The marine ecosystem survey investigates and analyzes multi-parameters at various times from various sites. Therefore, it is very difficult to analyze the complex ecological data of multi-items effectively, and it is more difficult to identify the current status and diagnose the problems of ecosystem through data analysis. Therefore, this paper aims to provide an example of interpretation of complex ecological data through analysis of distribution characteristics and outliers of ecological survey data. The main contents of the study are to elucidate the background levels of coastal ecosystem parameters considering the distribution characteristics of data, and to establish ecosystem monitoring indicators and an adaptive management system for the coastal waters in Korean Peninsula. The data used in this paper are based on the coastal ecosystem survey of the National Marine Ecosystem Monitoring Program conducted by the Ministry of Oceans and Fisheries (MOF) and the Korea Marine Environment Management Corporation (KOEM), and the major citations are from year 2015 to 2017. This article is a preliminary study to establish the above processes and the final result will be derived in 2020 when the coastal ecosystem survey is completed three times along the Korean coast.

키워드

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Fig. 1. Flow chart of adaptive management of marine ecosystem. Dotted lines indicate “adjustment” and/or “modification”.

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Fig. 2. Diagram of box&whisker plot and outlier.

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Fig. 3. Frequency of dissolved inorganic nitrogen (DIN) concentrations (μM) in May of 2015~2016.

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Fig. 4. Frequency of dissolved inorganic phosphorus (DIP) concentrations (μM) in May of 2015~2016.

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Fig. 5. Frequency of chlorophyll-a concentrations (㎍/L) in May of 2015~2016.

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Fig. 6. Frequency of phytoplankton densities (cells/L) in May of 2015~2016.

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Fig.7. Frequency of zooplankton densities (inds./m3) in May of 2015~2016.

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Fig. 8. Frequency of macro-benthos species diversity index(H') in May of 2015~2017.

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Fig. 9. Frequency of zooplankton species diversity index(H') in May of 2015~2017.

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Fig. 10. Box&whisker plot (left) and quartile distribution with outliers (right) of DIN in May of 2015~2016.

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Fig. 11. Box&whisker plot (left) and quartile distribution with outliers (right) of DIP in May of 2015~2016.

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Fig. 12. Box&whisker plot (left) and quartile distribution with outliers (right) of chlorophyll-a concentration in May of 2015~2016.

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Fig. 13. Box&whisker plot (left) and quartile distribution with outliers (right) of phytoplankton density in May of 2015~2016.

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Fig. 14. Box&whisker plot (left) and quartile distribution with outliers (right) of zooplankton density in May of 2015~2016.

Table 1. Survey parameters of coastal ecosystem in Korea

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Table 2. Comparison of descriptive statistics between raw and trimmed data by excluding outliers of zooplankton density (inds./m3) in May of 2015~2016

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Table 3. Comparison of descriptive statistics between raw and trimmed data by excluding outliers of phytoplankton density (cells/L) in May of 2015~2016

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Table 4. Comparison of descriptive statistics between raw and trimmed data by excluding outliers of macro-benthos density (inds./m2) in May of 2015~2016

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Table 5. Descriptive statistics of DIN (dissolved inorganic nitrogen) background level (μM) in the coast of Korean seas in May of 2015~2017

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Table 6. Descriptive statistics of DIP (dissolved inorganic phosphorus) background level (μM) in the coast of Korean seas in May of 2015~2017

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Table 7. Descriptive statistics of chlorophyll-a background level (μg/L) in the coast of Korean seas in May of 2015~2017

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Table 8. Descriptive statistics of phytoplankton background level (cells/L) in the coast of Korean seas in May of 2015~2017

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Table 9. Descriptive statistics of zooplankton background level (inds./m3) in the coast of Korean seas in May of 2015~2017

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Table 10. Defining short- and long-term monitoring indicators by frequency of outlier detections in the survey area

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