Stilt 46 (2004)
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The Stilt The Bulletin of the East Asian-Australasian Flyway A ustralasian W ader S tudies Number 46 G roup October 2004 A special interest group of Birds Australia The Stilt 46 (2004) STATE CONSERVATION OFFICERS QUEENSLAND Michele Burford, 23 Fernbourne Road, Wellington Point 4163 Ph (07) 3822 3759 NEW SOUTH WALES Phil Straw, PO Box 2006, Rockdale Delivery Centre, Rockdale 2216 Ph (02) 9597 7765 [email protected] TASMANIA Priscilla Park, 98 Nowra Road, Roches Beach 7021 The Stilt [email protected] ISSN 0726-1888 Ralph Cooper (North/North East Tas) 7 Beach Road Legana 7277 Ph (03) 6330 1255 © AWSG SOUTH AUSTRALIA MISSION STATEMENT David Close, 30 Diosma Drive, Coromandel Valley 5051 To ensure the future of waders and their habitats in Australia [email protected] through research and conservation programmes and to encourage and assist similar programmes in the rest of the VICTORIA East Asian-Australasian Flyway. Doris Graham, 14 Falconer Street, Fitzroy 3068 Ph (03) 9482 2112 OBJECTIVES • To monitor wader populations through a programme of WESTERN AUSTRALIA counting and banding in order to collect data on Mike Bamford, 23 Plover Way, Kingsley 6065 Ph (08) 9309 changes on a local, national and international basis. 3671 • To study the migrations of waders through a [email protected] programme of counting, banding, colour flagging and INTERNATIONAL REPRESENTATIVES collection of biometric data. NEW ZEALAND • To instigate and encourage other scientific studies of North Island: waders such as feeding and breeding studies. Stephen Davies, Department of Philosophy, University of • To communicate the results of these studies to a wide Auckland, Private Bag, Auckland. audience through the Stilt, the Tattler, other journals, South Island: the internet, the media, conferences and lectures. Paul Sagar, Ornithological Society of New Zealand, 38a • To formulate and promote policies for the conservation Yardley St, Christchurch 4. Ph: 03-342-9720 of waders and their habitat, and to make available information to local and national governmental ASIA conservation bodies and other organisations to Doug Watkins, Shorebird Flyway Officer, Wetlands encourage and assist them in pursuing this objective. International - Oceania, PO Box 787, Canberra, ACT 2601 To encourage and promote the involvement of a large band AUSTRALIA. of amateurs, as well as professionals, to achieve these Ph: +61 2 6274 2780, fax: +61 2 6274 2799. objectives. email: [email protected] OTHER COMMITTEE MEMBERS OFFICE BEARERS Mike Bamford, Mark Barter, David Close, Pete Collins, Chris Chairperson: Rosalind Jessop, RMB 4009, Cowes, Phillip Hassell, Clive Minton, and Doug Watkins. Island, 3922. Vic., AUSTRALIA. Ph: 03-59521857 (H), fax: 03-59568394. MEMBERSHIP OF THE AUSTRALASIAN WADER Vice Chairperson: Phil Straw, P.O. Box 2006, Rockdale STUDIES GROUP Delivery Centre, NSW 2216, AUSTRALIA. Ph and fax: Membership of the AWSG is open to anyone interested in the 02-9597 7765. conservation and research of waders (shorebirds) in the East Chair of Research Committee: Danny Rogers, 340 Ninks Asian-Australasian Flyway. Members receive the twice yearly Road, St Andrews North, 3761. Vic., AUSTRALIA. bulletin The Stilt, and the quarterly newsletter The Tattler. Ph: 03-9710 1345. Email: [email protected] Please direct all membership enquiries to the Membership Editorial: see inside back cover. Manager at Birds Australia (RAOU) National Office, 415 Liaison Officer: Hugo Phillipps, Communications Riversdale Rd, East Hawthorn, 3122. Vic., AUSTRALIA. Coordinator, Birds Australia, 415 Riversdale Rd, Ph: 03-9882 2622, fax: 03-9882 2677. Hawthorn East, 3123. Vic., AUSTRALIA. Email: [email protected] Ph: 03-98822622. Fax: 03-98822677 Annual Subscriptions: Australia A$35.00 Email: [email protected] New Zealand A$35.00 Secretary/Treasurer: Ken Gosbell, 17 Banksia Ct, Overseas A$40.00 Heathmont, 3135. Vic, AUSTRALIA. Ph: 03-97295524. Institutions A$45.00 Email: [email protected] Conservation Officer: Sandra Harding, 336 Prout Rd, AWSG WEB SITE: Burbank, 4156. Qld, AUSTRALIA. Ph: 07-390 2179 www.tasweb.com.au/awsg/index.htm Cover Illustration: Andrew Silcocks The Stilt 46 (2004) EDITORIAL and to encourage more birders to make and contribute sightings. This issue of Stilt differs from its predecessors in two respects, one obvious and the other less so. The first The less obvious change is that research papers and difference is the page layout. By using a smaller font and short communications are now independently refereed. a larger print area, more material can be accommodated The reasons for this change are to increase the quality of without having to increase the number of pages and contributions and to widen the pool of contributors. It is associated printing and mailing costs. Even so, this is a not the intention to use refereeing to cut down the bumper issue, well above the usual maximum of 72 acceptance rate, currently running at a steady 100%. A pages. The main reason for this is the clearing of the part of the job of editor will, for the foreseeable future, backlog of leg flag sighting reports. It is important to get be to help all contributors present their material in the these out speedily for three reasons: to acknowledge the most effective and acceptable form. The assistance efforts of those throughout the flyway who have recorded provided to the editor by referees has been valuable in and reported their sightings, to allow readers to see the connection with this issue and will, no doubt, continue to big picture resulting as the sum of individual sightings, be so into the future. 1 The Stilt 46 (2004): 2–8 Research NORTHWARD SHOREBIRD MIGRATION SURVEYS IN 2004 AT THREE YELLOW SEA SITES IN JIANGSU AND SHANDONG PROVINCES MARK BARTER1 AND QIANG XU2 121 Chivalry Avenue, Glen Waverley, Vic 3150 Australia. [email protected]; 2Wetlands International - China, Grand Forest Hotel, 19A Bei Sanhuan Zhonglu Road, Beijing 100029, China The shorebird surveys conducted in late-April and early May focused on three previously unsurveyed regions of intertidal areas, near-coastal salt works and mariculture ponds in northern Jiangsu and Shandong. A total of 33,628 shorebirds was counted in northern Jiangsu, 19,286 in Jiaozhou Wan and 53,463 in Laizhou Wan. The principal species in the saltworks were Spotted Redshank, Marsh Sandpiper, Wood Sandpiper, Red-necked Stint and Sharp- tailed Sandpiper. Contrary to earlier experience large numbers of Red-necked Stints were found on intertidal areas in Jiaozhou Wan. Bar-tailed Godwit represented 59% of the identified birds counted in Laizhou Wan, making the region the second most important discovered for this species in the Yellow Sea. The development of shorebird- unfriendly saltworks with plastic-lined evaporators will be of concern if these replace the widespread conventional saltworks which support hundreds of thousands of birds around the Yellow Sea. We also found extensive conversion of saltpans to fishponds in northern Jiangsu. More information on possible trends in saltworks design and conversion to fishponds should be obtained in order to assess the significance of these threats to important shorebird habitat. Levels of human disturbance in all three regions were very high, especially on the intertidal areas. Conversion of intertidal areas and near-coastal wetlands to saltworks and mariculture ponds was widespread and ongoing. INTRODUCTION hidden behind saltpan bunds and, perhaps, only 50% of the birds present within the viewing area were counted. The Northward migration surveys have been conducted since intertidal areas outside the saltworks were generally steep 1996 at a number of places around the Chinese portion of the and narrow and appeared to support few shorebirds. Yellow Sea (Barter 2002; Barter et al 2003; Barter & Riegen The survey of the coast north of Taibei SW was 2004) as part of a China - Australia cooperative programme relatively straightforward with counts being conducted in of shorebird studies. This paper describes the results of the fine weather at eight sites along the 30 km of coastline, most recent surveys of new areas and includes information which allowed good coverage of the intertidal areas except on the regions surveyed, survey methods used and conditions for the northernmost part where access was limited. The encountered. intertidal areas were muddy and 2-3 km wide along the most southern part of the coast, but became sandier and narrower METHODS (c. 500 m) further north. High tide was in the mid-afternoon enabling counting to be conducted on the rising tide. It is The shorebird surveys focused on the intertidal areas, near- estimated that possibly 80% of the coastal shorebirds were coastal salt works and mariculture (cultivation of the seas counted. resources for food) ponds in three regions located in northern Jiangsu and south-eastern and north-western Shandong Jiaozhou Wan (Figure 1). This relatively small bay in south-eastern Shandong has intertidal areas along the south-west and north-west sides, Survey areas, counting techniques and coverage which are backed by saltworks. The coastline around the entrance to the bay and on the southern and eastern sides is Northern Jiangsu rocky and there is little intertidal habitat. Surveys were The survey region consisted of four saltworks (SW) and the limited to the south-west and north-west parts of the bay and coastal area between the northernmost saltworks (Taibei took place on 3 and 4 May 2004. The survey covered both SW) and the Jiangsu/Shandong border. Counting took place the saltworks and the intertidal areas outside the saltworks. from 29 April to 2 May 2004. The intertidal zone was sandy and varied from 1-2 km in The survey of the saltworks involved driving around on width. tracks between saltpans and counting birds mostly from High tides were in the early afternoon allowing counting ground level, although higher vantage points were to be carried out on the rising tide.