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Potential needs of marine-related data and

information for the fishery resources management

Hiroyuki Matsuda

(Yokohama National University)

20min

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Topics

GEO-BON, CoML/OBIS Database for Fisheries Resources Lessons from “Fishing Down” Theory Contribution for CBD/Biodiversity

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Major international organizations/programs

CBD（ Convention on Biological Diversity) DIVERSITAS GEO（ Group on Earth Observation）

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Biodiversity science-policy interface

by A. Larigauderie

Research(DIVERSITAS, ESSP)

Assessment(MA, IPBES, IPCC)

Policy(CBD, UNFCCC)

Observations(GEO BON)

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The 1st J ｰ BON Workshop

2009.5.8-10 U. of Tokyo Opening Remarks by Yahara, Nakashizuka Forest ecosystems by Okabe Agricultural farms, grasslands by Yamamoto Lakes by Takamura Rivers by Shimatani Marines by Matsuda ESABII, islands by Itoh

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Census of Marine Life (CoML)

白山義久氏・藤倉克則氏

17 million Records

104,000 species

Japanese waters is the Richest biodiversity!

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Topics

GEO-BON, CoML/OBIS Database for Fisheries Resources Lessons from “Fishing Down” Theory Contribution for CBD/Biodiversity

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Network of shore, tidal flat, seagrass beds, seaweed landscapes Survey design of a variety of climate types Build testable hypothesis for climate change and other global

environmental issues.

shore

seaweed

Seagrass bed

Tidal flat

Monitoring Sites 1000 by Japanese Ministry of

Environment

仲岡雅裕氏

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Green： 50-100 %Yellow： 5-50 %Pink：<5 % ICRI East Asia Regional Workshop (2008)

山野博哉氏

サンゴ礁分布図Satelite-based

Coral reef mapping

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PICES Database for exotic species

風呂田利夫氏

http://www.pices.int/members/working_groups/wg21.aspx

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FISHBASE

http://www.fishbase.org/search.php

Coordinator:Rainer Froese

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Database of Japanese fisherieshttp://abchan.job.affrc.go.jp/index1.html

http://kokushi.job.affrc.go.jp/index-2.html

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FAO FISHSTAT

http://home.att.ne.jp/grape/shindo/FAOPlus.htm

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Vessel Monitoring System (VMS)

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　播磨灘（兵庫県・香川県・香川大学）のデータ紹介

Hyogo Pref.Kagawa Pref.Kagawa Univ.

多田邦尚氏

Prefectural fisheries stations in the inland sea collected long-term

data of phytoplankton

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• Setonaikai Inland Sea was called “dying sea” in 1970s• Law of Setouchi was enforced to improve water

quality, and resulted in …• Frequency of red tides decreased by 67%• Decreased eutrophication but fisheries products

Red tide frequency in Setonaikai Inland Sea（ Japanese Fisheries Agency）

瀬戸内法施行

多田邦尚氏

Long-term data of phytoplankton

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Observation stations during 1950-1990 (ca.17,000 stations)

Zooplanktons in Japanese waters

杉崎宏哉 (中央水研 )

Monitroing budget is endangered!

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0

50

100

150

200

250

300

350

400

Zo

op

lan

kto

n b

iom

ass（

mg

WW

/m3 )

low lowHIGH HIGH

Odate(1994)を加筆・改訂

杉崎宏哉 (中央水研 )

Change of biomasss of zooplanktons in the western Pacific

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Topics

GEO-BON, CoML/OBIS Database for Fisheries Resources Lessons from “Fishing Down” Theory Contribution for CBD/Biodiversity

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漁業崩落　 Fishing down (MA 2005)

Mean trophic levels of fisheries products＝ FAO FISHSTAT　＋　 FISHBASE　

It does not mean indicator of overfishing Japanese MTL is high

By D.Pauly

?

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Catch and mean trophic level in Japan(Matsuda et al. 2010 Ecol Res)

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…mean trophic level (MTL) from catches … underpins reported trends in human impacts, declining when predators collapse ("fishing down marine food webs") and when low-trophic-level fisheries expand ("fishing through marine food webs"). The assumption is that catch MTL measures changes in ecosystem MTL and biodiversity. Here we combine model predictions with global assessments of MTL from catches, trawl surveys and fisheries stock assessments and find that catch MTL does not reliably predict changes in marine ecosystems. Instead, catch MTL trends often diverge from ecosystem MTL trends obtained from surveys and assessments. …To detect fishing impacts on marine biodiversity, we recommend greater efforts to measure true abundance trends for marine species, especially those most vulnerable to fishing.

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Criticism to Fishing Down theory

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Japan Satoyama Satoumi Assessment

by IAS-UN Univ.

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Huge data from Fishing Vessel Monitoring Systems (VMS) are compiled;

Biological database (FISHBASE, OBIS…) are useful, combined with…

Global and Japanese catch statistics data (FISHSTAT, ) , and

Mathematical analysis and good idea!

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