Literature type: Scientific
Journal: Ibis
Volume: 155 , Pages: 576–592.
DOI: 10.1111/ibi.12039
Language:
English
External Link:
Full reference: Wang, W., Fox, A.D., Cong, P. & Cao, L. 2013. Food constraints explain the restricted distribution of wintering Lesser White-fronted Geese Anser erythropus in China. Ibis 155: 576–592. https://www.dx.doi.org/10.1111/ibi.12039
Keywords: food, China, management, East Dongting Lake, energy budget, goose foraging,
Abstract:
More than 90% of the Lesser White-fronted Geese Anser erythropus in the Eastern Palearctic flyway population winter at East Dongting Lake, China. To explain this restricted distribution and to understand better the winter feeding ecology and habitat requirements of this poorly known species, we assessed their food availability, diet and energy budgets at this site through two winters. Lesser White-fronted Geese maintained a positive energy budget when feeding on above-ground green production of Eleocharis and Alopecurus in recessional grasslands in autumn and spring to accumulate fat stores. Such food was severely depleted by late November and showed no growth in mid-winter. Geese fed on more extensive old-growth Carex sedge meadows in mid-winter where they were in energy deficit and depleted endogenous fat stores. Geese failed to accumulate autumn fat stores in one year when high water levels prevented the Geese from using recessional grassland feeding areas. Fat stores remained lower throughout that winter and Geese left for breeding areas later in spring than in the previous year, perhaps reflecting the need to gain threshold fat stores for migration. Sedge meadows are widespread at other Yangtze River floodplain wetlands, but recessional grasslands are rare and perhaps restricted to parts of East Dongting Lake, which would explain the highly localized distribution of Lesser White-fronted Geese in China and their heavy use of these habitats at this site. Sympathetic management of water tables is essential to maintain the recessional grasslands in the best condition for Geese. Regular depletion of fat stores whilst grazing sedge meadows in mid-winter also underlines the need to protect the species from unnecessary anthropogenic disturbances that enhance energy expenditure. The specialized diet of the Lesser White-fronted Goose may explain its highly restricted winter distribution and global rarity.
Literature type: Report
Language:
English
External Link:
Full reference: Koffijberg, K. & van Winden, E. 2013. Lesser White-fronted Geese in The Netherlands: a review of trends, phenology, distribtuion patterns and origin. , Sovon-rapport 2013/48. Sovon Vogelonderzoek Nederland, Nijmegen.
Keywords: Reintroduction, wintering, The Netherlands, population trend, occurrence
Literature type: Scientific
Journal: Bird Conservation International
Volume: 22 , Pages: 128-134.
DOI: 10.1017/S095927091100030X
Language:
English
Full reference: Wang, W., Fox, A.D., Cong, P., Barter, M. & Cao, L. 2012. Changes in the distribution and abundance of wintering Lesser White-fronted Geese Anser erythropus in eastern China. Bird Conservation International 22: 128-134. https://www.dx.doi.org/10.1017/S095927091100030X
Abstract:
The Lesser White-fronted Goose Anser erythropus is globally threatened with an estimated world population of 25,000 28,000, of which c 20,000 winter at East Dongting Lake, China. We present here the first collation of published and unpublished data on the distribution and abundance of the species in eastern China in recent decades. Lesser White-fronted Goose numbers have declined greatly in Anhui, Jiangxi and Jiangsu Provinces between the late-1980s/early-1990s and recent years: the species’ range has now mainly contracted to East Dongting Lake in Hunan. The relatively stable numbers at East Dongting Lake suggest that the population is not currently threatened, but the extreme concentration at one lake makes the species vulnerable. Lesser White-fronted Geese rely on very specific meadow vegetation exposed after water recession, so changes in water levels or recession timing, due to hydrological changes following the commissioning of the Three Gorges Dam, may affect biomass, palatability and plant species composition of the meadows. Thus, it is critically important to understand the wintering ecology and habitat needs of this threatened species at East Dongting Lake. It is also essential to conduct further synchronous Yangtze River floodplain surveys to assess the current status, distribution and habitat use of Lesser White-fronted Geese throughout the region.
Literature type: General
Journal: Podoces
Volume: 6 , Pages: 123-125.
Language:
English
Full reference: Mansoori, J. & Amini, H. 2011. Current Status of the Lesser White-fronted Goose Anser erythropus in Iran. Podoces: 6, 123-125.
Keywords: Iran, occurrence, decline, Miankaleh, winter
Abstract:
The Lesser White-fronted Goose is a species of conservation concern and considered to be globally threatened with extinction. Since the 1960s, the species has been reported from a total of 22 sites throughout Iran, but in the period 1992–2008, mid-winter counts of the species were received from only 16 sites. The status of the species in Iran is reviewed, and a map has been prepared showing the location of all the sites at which the species has been recorded. The highest number of birds recorded in Iran since the 1960s was a flock of 6,650 individuals in Miankaleh Protected Area in December 1972, while in 2007 and 2008, the total numbers recorded in Iran were only 264 and 26 individuals respectively.
Literature type: Report
Language:
English
Full reference: Kostiushyn, V., Andryuschenko, Yu., Goradze, I., Abuladze, A., Mamuchadze, J. & Erciyas, K. 2011. Wintering Waterbird Census in the Azov– Black Sea Coastal Wetlands of Ukraine, Georgia and Turkey. , Wetlands International Black Sea programme. 130 pp.
Literature type: Report
Language:
English
Full reference: Eskelin, T. & Timonen, S. 2010. Survey of possible Lesser White-fronted Goose (Anser erythropus) wintering sites in the Syrian Arab Republic, 14-24 February 2010. , AEWA Lesser White fronted Goose International Working Group Report Series No.1 Bonn Germany.
Keywords: monitoring
Literature type: Rep.article
Language:
English
Full reference: Karmiris, I., Kazantzidis, S. & Panagiotopoulou, M. 2009. A note on the diet of the Lesser White fronted Goose wintering in the Evros Delta, Greece. , In: Tolvanen, P., Øien, I.J. & Ruokolainen, K. (eds.). Conservation of Lesser White-fronted Goose on the European migration route. Final report of the EU LIFE-Nature project 2005–2009. WWF Finland Report 27 & NOF Rapportserie Report No 1-2009: pp. 68-70.
Keywords: monitoring, EU-Life, annual report, Fennoscandian, food, habitat
Literature type: General
Journal: Bulletin of the goose, swan and duck study group of northern Eurasia (Casarca)
Volume: 11 , Pages: 164-173.
Language:
Russian
(In English with Russian summary)
Full reference: Heinicke, T., Freude, M., Langgemach, T. & Ryslavy, T. 2008. Notes on remarkable waterfowl observations in Azerbaijan, in late winter 2001. Bulletin of the goose, swan and duck study group of northern Eurasia (Casarca): 11, 164-173.
Keywords: Azerbaijan
Literature type: Scientific
Journal: Wildfowl
Volume: 58 , Pages: 3-19.
Language:
English
External Link:
Full reference: Fox, A.D., Lei, C., BArter, M., Rees, E.C., Hearn, R.D., Hao, C.P., Xin, W., Yong, Z., Tao, D.S. & Fang, S.X. 2008. The functional use of East Dongting Lake, China, by wintering geese. Wildfowl 58: 3-19.
Literature type: General
Journal: Bulletin of the goose, swan and duck study group of northern Eurasia (Casarca)
Volume: 11 , Pages: 161-180.
Language:
Russian
(In English with Russian summary)
Full reference: Cao, L., Wang, W. & Barter, M. 2008. Wintering anatidae in China: a preliminary analysis. Bulletin of the goose, swan and duck study group of northern Eurasia (Casarca): 11, 161-180.
Keywords: China, winter survey
Number of results: 58