General Information: |
Title: | Compilation of Japanese fisheries statistics for the Japanese eel, Anguilla japonica, since 1894: a historical dataset for stock assessment |
Identifier: | ERDP-2015-03.1.4 |
Abstract: |
Fishery sustainability and the extinction risk of the Japanese eel, Anguilla japonica, are of global concern. The landings of the Japanese eel in Japan comprise a large part of the landings in East Asia. This study provides a compiled dataset of the annual fisheries statistics of the Japanese eel in Japan for stock assessment. The Japanese government has been recording Japanese eel statistics annually since 1984 in five series of annual reports by conducting systematic questionnaire surveys of fisheries managers and associations; however, most of these data are stored in analog format. The key variables in the dataset include the harvest weight of eels, the harvest weight and number of seeds for aquaculture, the number of eels stocked, and the number of management entities engaged in the eel fishery. The levels of spatial aggregation of the variables include the site (river and lake), prefecture, inland and coastal waters, and total in Japan. We also incorporated location data (latitude and longitude) of the site and prefecture into the dataset. Eel harvest includes primarily yellow eels (late juvenile stage) and silver eels (mature stage). Seed harvest in inland waters includes glass eels (intermediate stage between leptocephalus and elver) and elvers (early juvenile stage). Seed harvest from coastal waters comprises glass eels. This dataset provides information to assess long-term trends in the Japanese eel population.
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Keywords: |
- fishery statistics time series
- site-by-site statistics
- eel harvest
- seed harvest
- eel stocking
- fishery management entity
- glass eel
- elver
- yellow eel
- silver eel
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Involved Parties
Data Set Owners: |
Individual: | Hiroshi Hakoyama |
Organization: | Fisheries Research Agency |
Address: |
1088 Komaki, |
Ueda, Nagano 386-0031 Japan |
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Email Address:
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Individual: | Hiroka Fujimori |
Organization: | Fisheries Research Agency |
Address: |
1088 Komaki, |
Ueda, Nagano 386-0031 Japan |
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Email Address:
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Individual: | Chiaki Okamoto |
Organization: | Fisheries Research Agency |
Address: |
1088 Komaki, |
Ueda, Nagano 386-0031 Japan |
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Individual: | Sakie Kodama |
Organization: | Fisheries Research Agency |
Address: |
1088 Komaki, |
Ueda, Nagano 386-0031 Japan |
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Email Address:
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Data Set Contacts: |
Individual: | Hiroshi Hakoyama |
Organization: | Fisheries Research Agency |
Address: |
1088 Komaki, |
Ueda, Nagano 386-0031 Japan |
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Email Address:
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Associated Parties: |
Organization: | The Ministry of Agriculture, Forestry and Fisheries of Japan |
Address: |
1–2–1 Kasumigaseki, |
Chiyoda, Tokyo 100–8950 Japan |
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Data Set Characteristics
Geographic Region: |
Geographic Description: | Japan |
Bounding Coordinates:
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West: | 122.933611 degrees
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East: | 153.986389 degrees
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North: | 45.556944 degrees
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South: | 20.425278 degrees
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Sampling, Processing and Quality Control Methods
Step by Step Procedures
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Step 1: |
Description:
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The detailed information about methods can be seen on http://db.cger.nies.go.jp/JaLTER/ER_DataPapers/archives/2015/ERDP-2015-03/metadata
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Data Set Usage Rights
1) Acceptable use. Use of the data set will be restricted to academic, research, educational, government, biodiversity conservation, or other non-profit professional purposes.
2) Citation. Data users should properly cite this data paper in any publications or in the metadata of any derived data products that were produced using the data set. As the metadata and the data set may be updated, the date the data was retrieved should also be included in the citation.
3) Collaboration. Data users are strongly encouraged to consider consultation, collaboration, and/or co-authorship with the authors. |
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