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This page lists reports produced by the Working Group International Waterbird and Wetland Research.

The publications are listed by date with the most recent at the top.

The Importance of North-Eastern Mongolia for Migrating Pacific Golden Plovers: Spring 2005

Jan J. Wijmenga, Joop Jukema, Jeroen Reneerkens, Sundev Gombobataar, B. Gantulga & S. Tserennadmin

Working Group International Waterbird and Wetland Research

2011

"Global population estimates of Pacific Golden Plovers (Pluvialis fulva range from as low as 100,000 to as high as 1,000,000. Earlier reports suggest that between 4,000 and 50,000 Pacific Golden Plovers migrate through the Mongol-Daguur Strictly Protected Area in North-Eastern of Mongolia, which is an important area for numerous breeding and migrating birds. Given these estimates, the Mongol-Daguur Strictly Protected Area may host a significant portion of the world's population during migration. To gain a better understanding of the stopover behaviour of Pacific Golden Plovers, and of the importance of this area for this wader species, a Dutch-Mongolian expedition was set up. During a 16 day period, Pacific Golden Plovers on migration were counted, caught and measured."

Monitoring and breeding ecology of arctic birds at Medusa Bay, Taimyr, Russia 2005

H. Van Kleef, R. Smeets, D. Osipov, K. Tretjakov, T. Kirikova, D. Nowak, A. Nowak & J. Gregersen

Working Group International Waterbird and Wetland Research

2009

"In 2005 an expedition of the Working Group International Waterbird and Wetland Research (WIWO) visited the Medusa Bay area, near Dikson on the Taimyr peninsula, in northern Siberia (Russia), at 73o23'N 80o32'E . The main aim of the expedition was to apply a standardized breeding bird monitoring method intended to reveal temporal changes in breeding bird numbers at Medusa Bay. This will improve our knowledge of population dynamics of waders and other bird species. The main goal of the monitoring programme is to focus on numbers of all bird species present within fixed plots. Furthermore some important demographic variables, being nest success, environmental variables (snow cover, temperature) and biotic variables (lemming and Arctic fox abundance, arthropod availability) are monitored to be able to explain changes in breeding bird numbers and breeding success. Apart from carrying out the monitoring scheme, research activities also included research on breeding ecology of Brent Geese in relation to Snowy Owls, which was a continuation of the research performed in 1999."

Syrian Sociable Lapwing Survey

Remco Hofland and Guido Keijl

Working Group International Waterbird and Wetland Research

2008

"Until recently, there was scant information on the surviving numbers of Sociable Lapwings, their preferred habitat, migration routes and on the main threats to their survival. The species is currently classified as Critically Endangered by BirdLife International: the world population was estimated to number only 1200 individuals (Delany & Scott 2006). Between 18 February - 5 March 2007 a team consisting of Dutch and Syrian birdwatchers surveyed wetlands and fields in approximately the northern half of Syria on the presence of this species. Here, many hundreds were found. After this date, two team members stayed in the area holding the highest numbers until 26 March, when all Sociable Lapwings had left. Sociable Lapwings were encountered in four natural steppe areas in northern Syria: three situated in the central-northern agricultural area (Eiwa, Al Aumair and Ar Ruweira) and one further south (Al Fedha), between Deir ez-Zor and Palmyra. Altogether, 1579 Sociable Lapwings were counted prior to 5 March, while a week later, on 8-9 March, the highest estimate numbered 2000 birds. None of the birds checked were colour-ringed. Information was collected on numbers, behaviour, plumage and diet. All birds were exclusively seen in natural steppe habitat, except for a small flock that left the steppe to rest in an arable field. No birds were observed near water, with the exception of 12 Sociable Lapwings that briefly stayed near a sabkha (temporary pool) near Eiwa."

Waterbirds in coastal wetlands of Sierra Leone, January-February 2005

J. van der Winden, A. Siaka, S. Dirksen, M.J.M. Poot

Working Group International Waterbird and Wetland Research

2007

"Coastal wetlands in Sierra Leone were censused for bird numbers during the period January/February 2005: Scarcies Estuary, Sierra Leone River Estuary, Ywri Bay, Turtle Islands and Sherbro Island. In total 94,000 waterbirds were counted and more than 115,000 were estimated to be present in coastal brackish and marine wetlands. Based on the results, all area met the ornithological criteria to be listed as Important Bird Areas (IBA's) or as Wetlands of International Importance (Ramsar Convention). Apart from this, staff of CSSL and WCB were extensively trained in waterbird identification, counting waterbirds and related methods (GPS, analysing techniques). Also, during the trip 11 villages were visited for extensive discussions with local authorities about conservation topics. From these interviews information was collected about the occurrence of other species (groups) e.g. marine turtles, manatees. Also interviews were taken on hunting pressure and willingness to conserve threatened species."

Waterbird census of coastal Cameroon and Sanaga river, January-March 2007

Edito: J.J. Van der Waarde

Working Group International Waterbird and Wetland Research

2007

"A bird survey was carried out from January to March 2007 of the coastal wetlands of Cameroon and the lower Sanaga River. This WIWO report describes the results of this study. The coastal wetlands are described, and for all 66 species of waterbirds present, numbers and estimates for the total coast are presented. The coast of Cameroon is important for Palaearctic waders and Afrotropical waterbirds. Numbers of African Skimmer, Grey Pratincole, Royal Tern and Little Tern exceed the 1% population threshold. Three areas, the Ndian Basin on the Northern coast, the Wouri or Douala estuary and the lower reaches of the Sanaga pass several criteria for the Ramsar Convention and qualify as wetland of international importance. All three areas currently face threats of habitat destruction due to human interventions including oil exploration, hydropower dam construction, industrial developments, clearing of mangroves and overfishing. Conservation actions are recommended, including designation of three areas under the Ramsar Convention and poverty alleviation programs for the population that inhabit these areas."

Waders and waterbirds in the floodplains of the Logone, Cameroon and Chad, February 2000

Editor: W. Ganzevles, & J. Bredenbeek

Working Group International Waterbird and Wetland Research

2005

"Since 1991 several ornithological surveys and studies have been carried out in the Waza-Logone floodplain. A total of 346 bird species has been recorded since 1991. The most numerous waterbird species are White Pelican, Squacco Heron, Little Egret, Cattle Egret, Glossy Ibis, White-faced Whistling Duck, Collared Pratincole, Ruff and Black-tailed Godwit. For the resident species Black-crowned Crane the Logone gloodplain is one of the last strongholds. For Collared Pratincole the area is one of the major wintering areas in Africa. Sedge Warbler and Reed Warbler are vvery abundant as well as Barn Swallow. Annual counts of wintering waterbirds in the Lake Chad Basin Area in Cameroon (The Logone river and its floodplain) started in 1993 ans showed the importance of the Logone floodplain for wintering waterbird species. The February 2000 census presented in this report counted nearly 230,000 waterbirds and waders in the floodplains on both sided of the Logone river in Cameroon and chad. Waterbird numbers in the Lake Chad Basin Area have been increasing since 1995, indicating that the floodplain restoration of the Waza-Logone Project has a positive effect on waterbird habitat quality."

Wader and waterbird census at the Banc d'Arguin, Mauritania, January 2000

E.J.M. Hagemeijer, C.J. Smit, P. de Boer, A.J. van Dijk, N. Ravenscroft, M.W.J. van Roomen & M. Wright

Working Group International Waterbird and Wetland Research

2004

"The Banc d'Arguin is one of the key wintering areas for waders and other waterbirds in the world. Despite its relatively modest size it supports higher numbers of wintering waders than any other site on the East Atlantic Flyway. It holds the highest densities of wintering waders known from Europe and Africa. Since 1973 only 4 more or less complete counts have been carried out in the area during the wintering period of northern birds (in 1979, 1980, 1990-94 and 1997). The more recent counts show that important changes in bird numbers have occurred. These changes, as well as the high international value of the Banc d'Arguin, justify more frequent monitoring. In January 2000 the Parc National Banc d'Arguin has been visited in order to carry out a count of all waders and waterbirds in the area."

European Swallows Hirundo rustica And Other Songbirds Of Wetlands In Ghana, December 1997

S.B. Deuzeman, T.M. van der Have, W.T. de Nobel & B. van den Brink

Working Group International Waterbird and Wetland Research

2004

"With the establishment of long-term breeding bird monitoring schemes in several European countries, it became clear that breeding bird populations are hardly ever stable and may species wintering in Africa, including European Swallows, are declining. Apart from may short-term changes largely caused by variation in the weather, long-term changes are related to changes in land use and intensification of agricultural practices in Europe, and global climate change. Population trends in several species are linked to changes in rainfall patterns in the non-breeding areas in Africa. These relations have been mainly established on correlations between rainfall patterns and population trends, and field data are lacking in many species. This motivated to study European Swallows in Ghana. The field work concentrated on the following topics: searching for concentrations of foraging or roosting Swallows; and catching of Swallows and other wetland-related songbirds with mistnets to collect data on age, biometrics and moult."

Waterbirds in Lake Orumieh, Iran, September 2000

Roland Jalving & René Vos

Working Group International Waterbird and Wetland Research

2003

"Between 13 and 30 September 2000, a waterbird census of Lake Orumieh and bordering marshes was carried out. The fieldwork was done by a team of WIWO (Working Group International Waterbird and Wetland Research, The Netherlands), in good cooperation with the Department of Environment of the Islamic Republic of Iran. The main purpose of the project was to update the information of the value of the wetlands of North-West Iran for migrating waterbirds, since little research has been carried out there after the 1970's. The research area comprised of Lake Orumieh and its surrounding areas, including some rivermouths and marsh areas (Eslamabad wetland) And lake Shorgul and Yadegarlu. Part of this area is designated as National Park. The conditions during the survey were not optimal. Several of the visited wetlands in the area were partly or totally dried up and with low numbers of waterbirds."

Monitoring and breeding ecology of arctic birds at Medusa bay, Taimyr, Russia, in 2000

Raymond H.G. Klaassen, Hans Schekkerman, Ingrid Tulp, Michael Berezin, Andrew G. Bublichenko, Julia N. Bublichenko, Sergei P. Kharinotov, Sofia Rosenfeld & Sergei Khomenko

Working Group International Waterbird and Wetland Research

2003

"In 2000 a WIWO expedition was organised to the remote Taimyr Peninsula, which is situated in the high north of Siberia Russia. Members of this expedition were Sergei Khomenko (Ukraine) and Raymond Klaassen (Netherlands). The expedition was organised in close co-operation with two workers of the Dutch institute 'Alterra' and 5 Russian researchers. We stayed at the convenient Willem Barenz Field station, which is situated 18 km south of Dikson in the Medusa Bay area. The field station was built with financial help from the Dutch Ministry of Agriculture, Nature Management and Fisheries in 1994. From 1996 on WIWO expeditions were carried out to this area (Tulp et al, 1997; Khomenko et al, 1997; Felix & van Turnhout, 2000; Willems & van Kleef, 2000). Aims of this year expedition were continuing of the in 1998 developed standardised bird monitoring program (Van Turnhout et. al, in prep.) and study wader breeding ecology."

Breeding Birds Of Medusa Bay, Taimyr, Russia. Methods For Biological Monitoring In The Arctic With Results Of 1998 And 1999

Frank Willems, Chris van Turnhout, Hein van Kleef & Rob Felix

Working Group International Waterbird and Wetland Research

2002

Distribution and status of Great Bustards Otis tarda in the Konya Basin, Turkey, spring 2000

C. Heunks, E. Heunks, G. Eken & B. Kurt

Working Group International Waterbird and Wetland Research

2002

"The Great Bustard, Otis tarda, is a globally threated species. Information on numbers and distribution in Turkey is scarce. Previous work of DHKD suggested that probably the best area for Great Bustards in Turkey is the converted steppe of the Central Anatolian Plateau. For this reason a Great Bustard survey was carried out in this region, here termed the Konya Basin, in spring 2000. During this survey 83 birds (34 males) were located in four different areas within the Konya Basin. Birds were found on three different display grounds. Habitat descriptions of display grounds do not suggest any exclusive relationship between Great Bustard distribution and habitat, but human activity is substantial in all areas ant there are strong indications that the suitability of display grounds depends on the relative intensity of human activity. Numbers are still significant in this region, but the species is subject to heavy disturbance and the status of these populations is far from secure. Extrapolation of basin-wide numbers is not possible given current data. Additional surveys are recommended to discover new display grounds and to gain an insight into seasonal movemnets by Great Bustard. Conservation action is recommended to safeguard the Turkish Great Bustard population in the near future."

Waders and waterbirds in the floodplains of the Logone, Cameroon and Chad, January-February 1999

A.J. Dijkstra, W. Ganzevles, G.J. Gerritsen & S. de Kort

Working Group International Waterbird and Wetland Research

2002

"For many wader and waterbird species the inland West-African wetlands are of great importance as wintering sites. However the expanding human population caused a tremendously increased pressure on inland wetland resources in the past four decades. Together with a sequence of droughts in West-Africa this diminished, and still threatens, the capacity to support wildlife. Therefore further research should be carried out to extend knowledge and quantify the value of specific inland wetlands, in view of possible protection of the most vulnerable areas in the nearby future."

Waterbirds in the gulf of Gabès and other wetlands in Tunisia, autumn 1999

J.||F.F.P. Bos, G.M. van der Geest, N.L.M. Gilissen, R.A.J. Pahlplatz, I Essetti & F. Ayache

Working Group International Waterbird and Wetland Research

2001

"Between 18 September and 8 October 1999 an ornithological expedition of the Foundation Working Group International Waterbird and Wetland Research (WIWO) was carried out in Tunisia. Aims of the expedition were: to assess the international importance of the Gulf of Gabès for waterbirds in autumn; to assess the international importance of a number of coastal and inland wetlands in other parts of Tunisia for waterbirds in autumn; to develop a procedure for preparing and performing integral counts of waterbirds in Kneiss; to collect sight records of ringed birds and search for Slender-billed Curlews."

Waterbird count of Zanzibar and Pemba Islands, Tanzania, January 1998

Editor: R. Geene

Working Group International Waterbird and Wetland Research

2001

"Between 8 and 28 January 1998, a waterbird census of Zanzibar and Pemba Islands was carried out within the framework of the 1998 Tanzania Waterbird Count. The fieldwork was done by a team of WIWO, cooperating with the Commission for Natural Resources and the Department of Environment on Zanzibar Island and Pemba. The project resulted not only in good results of the bird count itself, but also proved the productiveness of the established international cooperation. It is hoped that the kind of cooperation that could be established will be repeated in the near future. Suggestions for projects on waterbirds in the future could be: setting up a regular monitoring scheme for the most important areas, carrying out a more complete survey on Pemba and trying to estimate fluctuations in the numbers during the period half December to half April by aerial surveys."

Searching for Slender-billed Curlews in Iran, January-February 2000

T.M. Van der Have, G.O. Keijl, J. Mansoori & V.V. Morozov

Working Group International Waterbird and Wetland Research

2001

"Between 13 January and 3 February 2000 about 20 wetlands were visited to count waterbirds and pay special attention to the presence of Slender-billed Curlew Numenius tenuirostris, a globally threatened species. At least, 1,200 Eurasian Curles N. arquata and 250 Whimbrels N. phaeopus were checked individually, as well as several hundreds of Bartailed Godwits Limosa lapponica and Black-tailed Todwits L. limosa, but no Slender-billed Curlews were observerd."

Counts And Ecology Of Waterbirds In The Sivash, Ukraine, August 1998

J. Van der Winden, E.A. Diadecheva, W.T. de Nobel & M.W.J. van Roomen

Working Group International Waterbird and Wetland Research

2001

Zeist-Nouakchott, 2001

O. Overdijk, C. de le Court & A. gueye. Rencensements de Spatules Blanches, Banc d'Arguin, Mauritanie, janvier

Working Group International Waterbird and Wetland Research

2000

Ecology of Grey Plovers Pluvialis squatarola breeding in the Lena Delta, The Sakha Republic/Yakutia, in 1997

K-M. Exo, & O. Stepanova

Working Group International Waterbird and Wetland Research

2000

Oiseaux Nicheurs sur les côtes du Parc National du Delta du Sine-Saloum et du Parc National Langue de Barbarie, Sénégal, 1998

Guido O. Keijl, Allix Brenninkmeijer, Frans J. Schepers, Robert E. Brasseur, Abdoulaye Ndiaye, Eric W.M. Stienen & Jan Veen

Working Group International Waterbird and Wetland Research

2000

Waders and waterfowl in the floodplains of the Logone, Cameroun, January 1993

J.C.J. Van Wetten & P. Spierenburg

Working Group International Waterbird and Wetland Research

1998

"The objectives of the Logone 1993 project of WIWO and Ecole de Faune were: providing basic data on waterfowl and migratory wader and waterbirds of the Logone floodplains and the Lake Chad area in North-Cameroun, in the context of the yearly IWRB mid-winter counts of tropical and sub-Sahara wetland areas; gathering relevant data on bird numbers and distribution for priority of conservation and protection measures in North-Cameroun; providing relevant data on the Zero-situation of wader and waterfowl numbers, before large scale floodplain restoration initiatives become implemented in the Waza Logone floodplain area; in-field training of staff members of the Ecole the Faune, Garoua, into methods of bird counts and monitoring; initiating yearly counts of waders and waterbirds by staff and students of "Ecole de Faune", by organising yearly counts by students and staff of the "Ecole de Faune", being an integrated part of the fieldwork in the wetland course of this institute; forming an expertise-pool, especially at the "Ecole de Faune" to be used for the yearly IWRB mid-winter counts in tropical and sub-Sahara Africa in subsequent years. This report concerns methods, results and conclusions of the first two objectives. It discusses the significance of the Logone floodplains and the Lake Chad area for wintering Palearctic waders and waterbirds, as well as Afro-tropical species."

Birds of Medusa Bay, NW Taimyr, in 1997

S. Khomenko, S. Rosenfeld & S. Dyluk

Working Group International Waterbird and Wetland Research

1999

"This report presents the results of a study of breeding waders and other bird species in Medusa Bay, NW Taimyr in 1997. The study is part of a long-term monitoring scheme of the area around the Willem Barentsz Biological Station. The survey was carried out between 17 June and 26 July 1997 and included estimation of breeding bird densities and nesting success, Brent Goose feeding ecology and a survey of the Severo-Vostochnie Islands."

Surveys Of Flora And Fauna In The Senné Fishpond-Area, Slovakia, Spring 1997

A. Wieland

Working Group International Waterbird and Wetland Research

1999

"In order to fill the major gap in our knowledge of the ecological function of the Senné fishponds a study was carried out in spring 1997. This report is a summary of the most important results of this project. It includes descriptions of the Senné fishponds area, the results of the ecological studies, discussions (threats), recommendations to manage the Senné fishponds area and results of ecological studies in August 1998."

Breeding birds of the Albanian wetlands, spring 1996

M.J. Zekhuis & D. Tempelman

Working Group International Waterbird and Wetland Research

1998

Oiseaux d'eau dans le Delta du Sine-Saloum et la Petite Côte, Sénégal, janvier 1997

F.J. Schepers, G.O. Keijl, P.L. Meininger & J.B. Rigoulot

Working Group International Waterbird and Wetland Research

1998

"To get a better view of the international importance of this area, a project was set up by the Working Group International Waterbird & Wetland Research (WIWO) in collaboration with the Direction des Parcs Nationaux du Sénégal (DPNS). The main objectives of the project in the Sine-Saloum Delta were: to count ail waterbirds in wetlands between Dakar and the border with The Gambia, especially the Sine-Saloum Delta; to pay special attention to (colour-rings of) European Spoonbills and Little Terns, their habitat choice, behaviour, etcetera; to describe the various wetlands and their threats; to judge the suitability of wetlands for monitoring purposes; to contribute to the African Waterfowl Census; to co-operate with rangers of the Direction des Parcs Nationaux du Sénégal. The results of this project are presented in this report."

Waders And Other Waterbirds In The United Arab Emirates, Autumn 1994

G.O. Keijl, P.S. Ruiters, T.M. van der Have, A. bij de Vaate, E.C.L. Marteijn & R. Noordhuis

Working Group International Waterbird and Wetland Research

1998

"In autumn 1994 and spring 1995 several coastal wetlands in the United Arab Emirates were surveyed for waders and other waterbirds. In Khor Dubai, a shallow lagoon just east of the city of Dubai, holding high numbers of waders and other waterbirds, a more detailed wader study was carried out. The study focused on Broad-billed Sandpipers, as part of this species' migration route and wintering grounds are still unclear."

Breeding waders at Cape Sterlegova, northern Taimyr, in 1994

I. Tulp, H. Schekkerman, T. Piersma, J. Jukema, P. de Goeij & J. van de Kam

Working Group International Waterbird and Wetland Research

1998

"In the summer of 1994 a Dutch/Russian expedition was undertaken to Cape Sterlegova in northern Taimyr. The expedition period lasted from 10 June until 12 August. Our special interest concerned the energetics of breeding in the high arctic. We studied the cost of incubation (doubly-labelled water method) and nest incubation schedules (by means of radio-tracking) in Knots. After hatching, the energetic of growth in Knot chicks were studied. Other studies undertaken included: monitoring of breeding bird densities in a 12 km2 study area, recording breeding success of waders, recording seasonal abundance of arthropod fauna, trapping and ringing of adult waders."

Ecological aspects of Pygmy Cormorants Phalacrocorax pygmeus in Prespa, Greece, May-August 1996

F.J. Willems & E. de Vries

Working Group International Waterbird and Wetland Research

1998

"During the 1996 breeding season ecological research was carried out to investigate feeding ecological aspects and colony size of the Pygmy Cormorant Phalacrocorax pygmeus, a vulnerable bird species, at Prespa National Park, northwestern Greece."

Cranes Grus grus in NW-Russia, autumn 1996

T. Veerman & H. Wessels

Working Group International Waterbird and Wetland Research

1998

"In 1996 research was done in the northwestern part of European Russia (district Kargopol) into cranes. These birds use this area as halfway stage on their route from their nesting ground to their wintering place. In order to map this migratory route it was decided to catch a number of these birds and give them coloured rings. It was tried to lure them to a feeding field on which grain mixed with the anaesthetic alphacholoralose was scattered."

European Songbirds And Barn Swallows Hirundo rustica In Ghana: A Quest For Constant Effort Sites And Swallow Roosts In December/January 1996/97

B. Van den Brink, R.G. Bijlsma & T.M. van der Have

Working Group International Wader and Waterfowl Research

1998

"The main aim of this project was to develop operational Constant Effort Sites in wetland habitats in Ghana where moult, condition and survival of European wetland birds could be monitored, thus obtaining information about the condition of European passerines and Swallows wintering in Ghanaian wetlands."

Breeding waders at Medusa Bay, western Taimyr, in 1996

I. Tulp, L.W. Bruinzeel, J. Jukema & O. Stepanova

Working Group International Waterbird and Wetland Research

1997

"In the summer of 1996 a Dutch expedition was undertaken to Medusa Bay, western Taimyr. The expedition period lasted from June 11 until July 25, the actual stay in the study area started on June 19 and ended on July 21. The studies undertaken included: monitoring of breeding bird densities in a defined area, recording breeding succes of waders, recording habitat preferences by means of tundra type mapping, recording seasonal abundance of arthropod fauna, trapping and ringing of adult waders, studying nest incubation schedules in Little Stints, recording body mass dynamics in Little Stints and Curlew Sandpipers and measuring energy expenditure of incubating Little stints using the doubly-labelled water method."

European Swallows Hirundo rustica in Botswana

B. Van den Brink, R.G. Bijlsma & T.M. van der Have

Working Group International Wader and Waterfowl Research

1997

"The objectives of the Botswana Swallow Project 1993-95 were: to collect information about the origin of European Swallows 'wintering' in Botswana, especially those from The Netherlands and other parts of Western Europe (where the species is in serious decline); to assess the importance of Botswana as 'wintering' ground for European Swallows; to study environmental factors that influence moult and body condition of European Swallows 'wintering' in Botswana; to obtain information about site fidelity of Swallows to 'wintering' areas; to study differences in the timing of moult of adult and juvenile European Swallows; to count the number of waterbirds in wetlands used by European Swallows as roosting and foraging sites; to investigate possible threats to European Swallow roost sites."

Breeding waders at Prochishcheva Lake, Northeastern Taimyr, Siberia, in 1991

H. Schekkerman & M. van Roomen

Working Group International Waterbird and Wetland Research

1995

Waterbirds in Kneiss, Tunisia, February-March 1994

T.M. van der Have, N. Baccetti, G.O. Keijl & M. Zenatello

Working Group International Waterbird and Wetland Research

1997

Birds Of The Messolonghi Wetlands. Eastern Mediterranean Wader Project, Spring 1990

Editor: W.T. de Nobel

Working Group International Waterbird and Wetland Research

1995

Breeding birds of Cape Wastochnia, Pyasina Delta, Taimyr, Russia, in 1994

Holmer Vonk

Working Group International Waterbird and Wetland Research

2003

"As expected from observations made in earlier years, the breeding season of 1994 was a peak year in lemming densities. Lemmings normally show a three-year cycle in abundance. With the last peak year at Cape Wastochnia being 1991, this pattern also occurred in the study area. Arctic Fox was also present with one occupied burrow at the eastern border of the study plot. As a result of the lemming densities, the typical lemming predators Snowy Owl, Pomarine Skua and Rough-legged Buzzard were breeding in the area. The breeding of some species, at least White-fronted Goose, also seems restricted to lemming peak years in the area. Most non-predatory species also occurred in 1993. Breeding densities were comparable in both years. The density of lemmings thus not seems to influence the number of birds which start breeding. However, in this differences between methods and observers should be taken into account. Densities found in 1994 should be considered as the absolute minimum of the numbers actually present and might actually give some underestimation for the smaller wader species."

Icelandic Black-tailed Godwit project 1993

G.J. Gerritsen & N.M. Groen

Working Group International Waterbird and Wetland Research

1995

Wintering Geese in Turkey, January 1992

Lieuwe J. Dijksen and Michel C.M. Klemann

Working Group International Wader and Waterfowl Research

1994

Wintering waterbirds in the coastal wetlands of Albania, 1993

Editor: W.J.M. Hagemeijer

Working Group International Waterbird and Wetland Research

1994

Wader and waterfowl migration in the Çukurova deltas, South Turkey, spring 1990

Editor: H.A. Kivit, H. Nijmeijer & A. Ovaa

Working Group International Waterbird and Wetland Research

1994

Waders and waterbirds along part of the Atlantic coast of Morocco, autumn 1991 - spring 1992

Editor: N.M. Groen & P.J. Zomerdijk

Working Group International Waterbird and Wetland Research

1994

Ornithological survey of the coast of Libya, July 1993

P.L. Meininger, P.A. Wolf, D.A. Hadoud & M.F.A. Essghaier

Working Group International Waterbird and Wetland Research

1994

Bird census in the Kizilirmak delta, Turkey, in spring 1992

Editor: F. Hustings & van Dijk K.

Working Group International Waterbird and Wetland Research

1993

Wader ringing in Tun1sia 1962-1986

H. Spiekman

Working Group International Waterbird and Wetland Research

1992

Bird observations in the Danube delta and in the Dobrodgea (Romania)

S. Brehme, T. Müller & J. Redlich

Working Group International Waterbird and Wetland Research

1992

Bahrain wader study 1991

E. Hirschfeld, S.A. Mohamed & T. Stawarczyk

Working Group International Waterbird and Wetland Research

1992

Coastal waterbirds in Gabon

Editor: F.J. Schepers & E.C.L. Marteijn

Working Group International Waterbird and Wetland Research

1993

Ornithological studies in Egyptian wetlands 1989/90. FORE-report 94.01

Editor: P.L. Meininger & G.A.M. Atta

Working Group International Waterbird and Wetland Research

1994

Waders in Guinea-Bissau, October 1992-May1993 The end of the East Atlantic Flyway

Editor: W.J. Wolff

Working Group International Waterbird and Wetland Research

1998

Waterbirds in the Kneiss area and other wetlands, Tunisia. Eastern Mediterranean Wader Project, spring 1990

Editor: H.W. Spiekman, G.O. Keijl & P.S. Ruiters

Working Group International Waterbird and Wetland Research

1993

Mid-winter waterfowl census Turkey January 1990

L.J. Dijksen & A-M. Blomert

Working Group International Waterbird and Wetland Research

1993

Waterbirds in the Sivash, Ukraine, spring 1992

Editor: T.M. van der Have, S. van der Sant, Y. Verkuil & J. van der Winden

Working Group International Waterbird and Wetland Research

1994

Ornithological importance of coastal wetlands in Guinea. Joint report of WIWO and ICBP. WIWO-report 35 and ICBP study report nr. 47

W. Altenburg & J. van der Kamp

Working Group International Waterbird and Wetland Research

1991

Waterbirds in the Van Province, eastern Turkey, May 1989

V.M. van den Berk, J.P. Cronau & T.M. van der Have

Working Group International Waterbird and Wetland Research

1993

Survey of breeding waders and relations between breeding performance and lemming densities, North-East Taimyr, Siberia, 1992

H. Spiekman & N. Groen

Working Group International Waterbird and Wetland Research

1993

Migration of waterbirds through wetlands in Central Anatolia, spring 1988

Editor: H. Schekkerman & M.W.J. van Roomen

Working Group International Waterbird and Wetland Research

1993

Mid-winter waterfowl census Turkey January 1989

L.J. Dijksen & A-M. Blomert

Working Group International Waterbird and Wetland Research

1989

Migration of waders and other waterbirds along the Mediterranean coast of Israel, spring 1989

G.O. Keijl, M.W.J. van Roomen, P.S. Ruiters & A. Wijker

Working Group International Waterbird and Wetland Research

1992

Moroccan Slender-billed Curlew survey, winter 1987-88

A.B. van den Berg

Working Group International Waterbird and Wetland Research

1988

Waders and waterfowl in spring 1988 at Eber Gölü, Turkey

A. van Winden, K. Mostert, P. Ruiters, M. Siki & H. de Waard

Working Group International Waterbird and Wetland Research

1989

Homeward bound: Problems waders face when migrating from the Banc d'Arguin, Mauritania, to their northern breeding grounds in spring

B.J. Ens, T. Piersma, W.J. Wolff & L. Zwarts

Working Group International Waterbird and Wetland Research

1990

Ornithological importance of the coastal wetlands of Guinea-Bissau

W. Altenburg, E. Wymenga & L. Zwarts

Working Group International Waterbird and Wetland Research

1992

Report of the Dutch-Mauritanian project Banc d'Arguin 85/86. Joint report of WIWO and RIN nr. 25

Editor: B.J. Ens, T. Piersma, W.J. Wolff, L. Zwarts

Working Group International Waterbird and Wetland Research

1989

Les zones humides dans la region de Anaba et El Kala en Mai 1987

B. Chalabi & G. van Dijk

Working Group International Waterbird and Wetland Research

1988

Etude ornithologique préliminaire de la zone côtière du nord-ouest de la Guinée. Joint report of WIWO and ICBP. WIWO-report 23 and ACBP study report 30

W. Altenburg & J. van der Kamp

Working Group International Waterbird and Wetland Research

1989

South Turkey Project. A survey of waders and waterfowl in the Çukurova deltas, spring 1987

Editor: T. van der Have, V.M. van den Berk, J.P. Cronau & M.J. Langeveld

Working Group International Waterbird and Wetland Research

1988

Mid-winter waterfowl census Turkey, January 1988

L.J. Dijksen & A-M.C. blomert

Working Group International Waterbird and Wetland Research

1988

Birds of the wetlands in North-East Greece, spring 1987

Notes on the birds of some wetlands in North-East Greece and Turkey

Mid-winter waterfowl census Turkey January 1987

L.J. Dijksen & P. van der Wolf

Working Group International Waterbird and Wetland Research

1987

An ornithological winter survey of Lake Turkana, Kenya

H. Schekkerman & J.C.J. van Wetten

Working Group International Waterbird and Wetland Research

1987

Survey of waterbirds on Egyptian wetlands, autumn 1981

C.A. Bennet, R.G. Bijlsma & R. Stouthamer

Working Group International Waterbird and Wetland Research

1982

Waterfowl in West African coastal wetlands: a summary of current knowledge

W. Altenburg

Working Group International Waterbird and Wetland Research

1987

Observations of waterbirds in some wetlands in Turkey, July/August 1986

L. Schilperoord & M. Schilperoord-Huisman

Working Group International Waterbird and Wetland Research

1986

Mid-winter waterfowl census, Turkey 1986

L.J. Dijksen & F.J. Koning

Working Group International Waterbird and Wetland Research

1986

Notes on the birds of some wetlands in Turkey

R.G. Bijlsma & F.E. de Roder

Working Group International Waterbird and Wetland Research

1986

Wintering waders and waterfowl in the Gulf of Gabès, Tunisia, January-March 1984

A.J. van Dijk, K. van Dijk, L. Dijksen, T. van Spanje & E. Wymenga

Working Group International Waterbird and Wetland Research

1986

Cranes and waterfowl counts of some Turkish wetlands

V. van den Berk, D. van Dorp, O. van Hoorn & R. Vos

Working Group International Waterbird and Wetland Research

1986

Entre Sahara et Siberie. Ewijk, The Netherlands

B. Ens

Working Group International Waterbird and Wetland Research

1985

Les zones humides du Nord-Est Algerien en 1984

B. Chalabi, J. Harrison & G. van Dijk

Working Group International Waterbird and Wetland Research

1985

Wader studies and waterbirds in the Nakdong Estuary, South Korea, in September 1984

T. Piersma

Working Group International Waterbird and Wetland Research

1985

The importance of some wetlands in Turkey for transient and wintering birds in Turkey

V. Van den Berk, N. van den Berk, R.G. Bijlsma & F.E. de Roder

Working Group International Waterbird and Wetland Research

1985

Waterbirds on som Turkish wetlands, October/November 1983

F.E. De Roder

Working Group International Waterbird and Wetland Research

1985

Waders along the coast of Thailand during November and December 1984

R.G. Bijlsma & F.E. de Roder

Working Group International Waterbird and Wetland Research

1985

Water birds at some wetlands in Turkey and Greece

J. Philippona

Working Group International Waterbird and Wetland Research

1985

Wader migration along the Atlantic coast of Morocco, March 1981

M. Kersten, T. Piersma, C. Smit & P. Zegers

Working Group International Waterbird and Wetland Research

1983

Wintering waders at the Banc d'Arguin, Mauritania.

W. Altenburg, M. Engelmoer, R. Mes & T. Piersma

Working Group International Waterbird and Wetland Research

1982