Case Study of

Integrated Wetland Management

at Yatsu Tidal Flat

with ＹＮＯＣ

←YATSU-HIGATA 35゜ 40’ 31” N 140゜ 0’ 11” E

Tokyo Bay→

Tokyo Met.→

1. The Profile of YATSUHIGATA

(Yatsu Tidal Flat)

↓Y

ats

u C

ree

k Tokyo Bay

↑T

ak

ase

Cre

ek

The Present

YATSUHIGATA

Transition of Coastline

1971 1974

Road to Preservation

1971- Protection activities by local people

and conservation groups

1993 Ramsar site

1994 YNOC was established

1996 The East Asian and Australasian

Shorebirds Flyway Network site

Key words

Local People/Groups

Facility Volunteer

Coordination and Training

Rehabilitation Program

2. Participation of Local People

Volunteers

activities

Dramatic picture show Bush mowing

Interpretation Walk-in observation

Volunteers activities

Guide walk

Wetland explorer

Coordination & Training

Interpretation training

for beginner

Monitoring benthos

training

Volunteer Activities

●Interpretation

●Group activities

●Supporting for event etc.

Coordination

&

Training

Visitors

&

Conservation

For

by ＹＮＯＣ

Rehabilitation Program

● Three years program

2001-2003

● Involvement of

local people

Key words

Wastes

Blue Tide

Sediment

Ulba pertusa

Population Clash on Shorebirds

3. Research and Monitoring

Blue Tide & Changing of Sediment

Green Tide caused by Ulba pertusa

Collecting Ulva

Fig.1.& .2.

0

200

400

600

800

1000

1200

1400

1600

1974 1979 1984 1989 1994

Fig.1. Relationship between number of migratory waders and years in spring

0

100

200

300

400

500

600

1973 1978 1983 1988 1993

Fig.2. Relationship between number of migratory waders and years in autumn

Table.1

Table1. Tendency for the population changes on each wader species recorded in spring and autum n from 1973 to

1995 by the sim ple linear regression analyses.

�í �¼ �@ Species �t �ú �@ Spring �H �ú �@ Autum n

Japanease nam e Latin nam e F cal Tendency F cal Tendency

�R �̀�h �� Charadrius dubius 0.87 �m �r 1.41 �m �r

���_ �C �̀�h �� Charadrius mongolus 19.13 �« �iP<0.001�j 7.922 �« �iP<0.025�j

���i �O �� Pluvialis dominica - - 5.987 �« �iP<0.025�j

�L ���E �W ���V �M Arenaria interpres 31.6 �« �iP<0.001�j 11.63 �« �iP<0.005�j

�g �E �l �� Calidris Ruficollis 1.396 �m �r 0.359 �m �r

�E �Y ���V �M Calidris acuminata - - 1.89 �m �r

�R �I �o �V �M Calidris canutus - - 2.42 �m �r

�I �o �V �M Calidris tenuirostris 8.72 �« �iP<0.01�j 0.526 �m �r

�~ ���r �V �M Calidris alba 0.876 �m �r 1.13 �m �r

�L ���A �C Limicola falcinellus - - 2.57 �m �r

�c ���V �M Tringa erythropus - - 7.88 �« �iP<0.025�j

�A �I �A �V �V �M Tringa nebularia - - 12.52 �« �iP<0.005�j

�̂�J �u �V �M Tringa glareola - - 16.08 �« �iP<0.001�j

�L �A �V �V �M Heteroscelus brevipes 1.41 �m �r 24.14 �« �iP<0.001�j

�C �\ �V �M Actitis hypoleucos - - 35.25 �« �iP<0.001�j

�\ ���n �V �V �M Xenus cinereus - - 0.025 �m �r

�I �O ���V �M Limosa limosa - - 0.025 �m �r

�I �I �\ ���n �V �V �M Limosa lapponica 0.023 �m �r 0.35 �m �r

�̀���E �V ���N �V �M Numenius phaeopus 4.01 �m �r 6.17 �« �iP<0.025�j

�A �J �G ���q���A �V �V �M Phalaropus lobatus - - 4.58 �« �iP<0.05�j

�@ In the Table2.,�ª shows increase, �« shows decline, NS m eans None Significant.

Key words

Migratory Shorebirds Education Project

Teaching Material

Inter-NGOs

Workshop

Shorebirds Network Site Training Course

4. Domestic and International cooperation

Shorebirds

Grey-tailed tattler

Greenshank Curlew

Mongolian plover

Breeding

Staging

Wintering

What are Shorebirds？

12000ｋｍ！

Red-necked stint

- A group of special birds in wetland

- Migratory birds

Olango island★

Wasur National Park★

Kakado National Park★

Parry lagoons★

Thomsons Lake★

Morton Bay★

Kooragang Nature Reserve★

Corner Inlet★

The Coorong★

Orielton lagoon★

Logan Lagoon★

Fifth of Thames★

Farewell Spit★

Tonda Wildlife Area★

Tonggin Estuary★

★

★ ★

★

★

★ ★ ★

★ ★

★

★

★

★ ★

★

★ ★

★

★

★

★ ★

★ ★

★

The East Asian-Australasian Shorebird Flyway Network

Moroshechnaya Estuary★

Yatsu Tidal Flats★

Tokyo Bay Wild Bird Park★

Yoshino Estuary★

Manko★

Shuangtaizi Estuary★

Yellow River Delta★

Maipo★

Chongmin Dongtan★

Yalu Jiang★

Yancheng★

Teaching Material on Shorebirds

for Environmental Education

in Okinawa

August 2001

Demonstration and Workshop

Shorebirds network site training

course in Kashima city

Conclusion 1/2

１．Environmental Education

２．Participation of

Local people

３．Conservation

Research & Monitoring ４. Domestic & International

Cooperation

Tasks of ＹＮＯＣ for Integrated Wetland Management

Mechanisms

Conclusion 2/2

Governments

ＮＧＯ International Organization

Local Community

Cooperation & Partnership

Fund

Participate

Take action Supervise