Literature type: Scientific
Journal: Bird Conservation International
Volume: 27 , Pages: 355-370.
DOI: 10.1017/S0959270916000393
Language:
English
Full reference: Karmiris, I., Kazantzidis, S., Platis, P. & Papachristou, T.G. 2017. Diet selection by wintering Lesser White-fronted Goose Anser erythropus and the role of food availability. Bird Conservation International 27: 355-370. https://www.dx.doi.org/10.1017/S0959270916000393
Keywords: diet selection, food availability, diet composition, droppings, protein, Kerkini Lake, Echinochloa crus-galli, Cyperus esculentus, Scirpus lacustris, Ranunculus sceleratus
Abstract:
The Fennoscandian population of the Lesser White-fronted Goose Anser erythropus (LWfG) is on the verge of extinction and migrates from northern Fennoscandia to Greece on a regular seasonal basis. For the first time, diet selection was investigated during two years at Kerkini Lake, a wintering site in Greece. The relative use of LWfG’s feeding habitats was systematically recorded by visual observations of the LWfG flocks. Food availability was measured by the relative cover of available vegetation types while the diet composition was determined by the microhistological analysis of droppings. In addition, we determined crude protein, neutral detergent fibre, acid detergent fibre and acid detergent lignin content of the most preferred plant species by LWfG and all vegetation categories that contributed to LWfG diet in the middle of the duration of their stay at Kerkini Lake and after their departure from the lake. LWfG feeding habitat was exclusively marshy grassland in water less than 5 cm deep up to 300–400 m away from the shore. LWfG selected a diverse number of plant species (33), however, grass made up the 58% of their diets. The most preferred plant species were Echinochloa crus-galli, Cyperus esculentus, Scirpus lacustris and Ranunculus sceleratus. LWfG departed from Kerkini Lake in mid-December to the Evros Delta (Thrace, eastern Greece), when either food availability falls in very low levels or flooding occurred in their main feeding habitat. Consequently, as long as food and habitat resources are available for LWfG, it is very likely that the birds will winter mainly at Kerkini Lake and not at the Evros Delta, which will contribute to further minimisation of the theoretical risk of accidental shooting of LWfG at the latter wintering habitat. Thus, future conservation actions should primarily focus on the grassland improvement at Kerkini Lake enhancing the availability of food resources for LWfG (mainly grasses) and the protection of the feeding habitat from flooding.
Literature type: Scientific
Journal: Bird Conservation International
Volume: 26 , Pages: 397-417.
DOI: 10.1017/S0959270915000386
Language:
English
Full reference: Jia, Q., Koyama, K., Choi, C.-Y., Kim, H.-J., Cao, L., Liu, G. & Fox, A. 2016. Population estimates and geographical distributions of swans and geese in East Asia based on counts during the non-breeding season. Bird Conservation International 26: 397-417. https://www.dx.doi.org/10.1017/S0959270915000386
Keywords: Population size, survey, South Korea, Japan, China,
Abstract:
For the first time, we estimated the population sizes of two swan species and four goose species from observations during the non-breeding period in East Asia. Based on combined counts from South Korea, Japan and China, we estimated the total abundance of these species as follows: 42,000–47,000 Whooper Swans Cygnus cygnus; 99,000–141,000 Tundra Swans C. columbianus bewickii; 56,000–98,000 Swan Geese Anser cygnoides; 157,000–194,000 Bean Geese A. fabalis; 231,000–283,000 Greater White-fronted Geese A. albifrons; and 14,000–19,000 Lesser White-fronted Geese A. erythropus. While the count data from Korea and Japan provide a good reflection of numbers present, there remain gaps in the coverage in China, which particularly affect the precision of the estimates for Bean, Greater and Lesser White-fronted Geese as well as Tundra Swans. Lack of subspecies distinction of Bean Geese in China until recently also limits our ability to determine the true status of A. f. middendorffii there, but all indications suggest this population numbers around 18,000 individuals and is in need of urgent attention. The small, highly concentrated and declining numbers of Lesser White-fronted Geese give concern for this species, as do the major declines in Greater White-fronted Geese in China (in contrast to numbers in Japan and Korea, considered to be a separate flyway). In the absence of any demographic data, it is impossible to interpret the causes of these changes in abundance. Improved monitoring, including demographic and tracking studies are required to provide the necessary information to retain populations in favourable conservation status.
Literature type: Scientific
Journal: Ecological Engineering
Volume: 88 , Pages: 90–98.
DOI: 10.1016/j.ecoleng.2015.12.009
Language:
English
Full reference: Guan, L., Lei, J., Zuo, A., Zhang, H., Lei, G. & Wen, L. 2016. Optimizing the timing of water level recession for conservation of wintering geese in Dongting Lake, China. Ecological Engineering 88: 90–98. https://www.dx.doi.org/10.1016/j.ecoleng.2015.12.009
Keywords: Habitat quality, Water recession, Generalised linear mixed modelling (GLMM), Three Gorges Dam, (TGD), Enhanced vegetation index (EVI), Geese, China, Dong Tinge lake, wintering
Abstract:
Habitat suitability and selection are key concepts in wildlife management, especially in protection of critical habitat and conservation of sensitive and endangered populations. In recent years, many approaches have been developed to link habitat suitability with animal occurrence and abundance. These approaches typically involve identifying existing habitats, defining habitat quality metrics, and estimating the association between animal occurrence/abundance and measured habitat metrics. In this study, we first tested whether we could measure habitat quality at Dongting Lake, China, one of the most important migratory waterbird wintering sites in the East Asian Flyway, for a group of Anatidae using metrics derived from the freely available multi-temporal MODIS vegetation index. The results showed that goose counts could be sufficiently modelled using mean winter season EVI (enhanced vegetation index) and habitat size computed from EVI time series and topographic wetness index (TWI). We then quantified the relationships between hydrological regimes and the habitat quality metrics. Our findings suggested that the timing of optimal water draw down should be early to mid October to ensure quality food sources for the wintering geese in Dongting Lake. The results have direct conservation implications as water recession timing is highly manageable through water flow regulation.
Literature type: Book Chpt
Language:
English
Full reference: Mikander, N. 2015. Lesser White-fronted Goose (Anser erythropus). An elusive traveller. , UNEP/AEWA Secretariat 2015.Stories from the flyway. Bonn, Germany. 184pp.
Keywords: photos, photo book, conservation evidenece
Literature type: Proceedings
Language:
Finnish
(In Finnish)
Full reference: WWF Finland 2014. WWF:n kiljuhanhityöryhmä 30 vuotta. Juhlaseminaari 1.11.2014. Ohjelma ja esitelmien tiivistelmät. [The Lesser White-fronted Goose conservation project of WWF Finland. 30th anniversary seminar, 1 November 2014. Programme and abstracts.] , WWF Finland. 20 pp.
Keywords: population development, conservation, Finland, anniversary
Literature type: Proceedings
Journal: Ornis norvegica
Volume: 36 , Pages: 47-51.
Language:
English
External Link:
Full reference: Yerokhov, S. 2013. The current status of the Lesser White-fronted Goose Anser erythropus in Kazakhstan: monitoring, threats and conservation measures , Proceedings of the 14th meeting of the Goose Specialist Group of the IUCN Species Survival Commission and Wetlands International. Ornis norvegica 36: 47-56.
Keywords: Species conservation, hunting, recreational disturbance, water regulation, poisoning
Abstract:
Within the framework of the National Action Plan (hereafter NAP) for the globally threatened Lesser White-fronted Goose Anser erythropus developed in the republic of Kazakhstan between 2011 and 2012, a number of measures are planned for the forthcoming three years (2012–2014). On the basis of scientific data received on this species in the last decades, and making use of available experience from other countries, it is proposed to carry out a variety of practical activities regarding goose protection, in particular in order to reduce the negative influence of a number of anthropogenic factors upon Lesser White-fronted Goose, in particular the influence of hunting on this protected species. Considering that implementation of such plans have not previously been applied to the fauna of Kazakhstan, this NAP will serve as a model as to how to implement effective management of other species and populations in order to reduce and eliminate negative factors affecting biodiversity and habitat.
Literature type: Scientific
Journal: Environmental Humanities
Volume: 3 , Pages: 1-24.
Language:
English
External Link:
Full reference: Reinert, H. 2013. The Care of Migrants: Telemetry and the Fragile Wild. Environmental Humanities 3: 1-24.
Keywords: conservation, biopolitics, essay, human-nonhuman relations
Abstract:
Drawing on a multi-sited study of transnational efforts to safeguard the highly endangered Lesser White-fronted Goose (Anser Erythropus), the text develops an argument about a certain “biopolitics of the wild”—a particular mode of governing nonhuman life, rooted in certain conditions of visibility and engagement. As a wild avian population, the Lessers are known and managed primarily through practices of asymmetrical intimacy, such as field observation and telemetry. These practices, in turn, determine the emergence of biopower in a specific modality, as a power that takes hold of its object—and generates it— in a mode of constitutive withdrawal. Outlining the shape and parameters of this withdrawn presence, the essay locates “the wild” at a complex, awkward juncture in contemporary human-nonhuman relations: simultaneously an object of control and withdrawal, absence and intimacy, wildness and impurity; a site of complex and intractable controversies—but also, perhaps, of hope.
Literature type: General
Journal: Podoces
Volume: 8 , Pages: 31-37.
Language:
English
Full reference: Narasimmarajan, K., Chetri, D., Ri, C. & Mathai, M.T. 2013. Bird Species of Conservation Concern along the Brahmaputra River in Assam, Northeast India Podoces: 8, 31-37.
Abstract:
The Brahmaputra is one of the significant river ecosystems of Assam. A brief avifaunal survey was conducted alongthe Brahmaputra River, Assam,during February and March 2012. A total of 220 species belonging to 47 families were recorded. Twentyspecies were globally threatened (4 Critically Endangered, 2 Endangered, 6 Vulnerable and 8 Near Threatened) including Slender-billed Vulture Gyps tenuirostris, Whitebacked Vulture Gyps bengalensis, White-winged Duck Asarcornis scutulata, Baer’s Pochard Aythy abaeri, Lesser White-fronted Goose Anser erythropus, Bengal Florican Houbaropsis bengalensis, Greater Adjutant- Stork Leptoptilos dubius, Spot-billed Pelican Pelecanus philippensis, Black-headed Ibis Threskiornis melanocephalus, Lesser Kestrel Falco naumanni, Black-necked Stork Ephippiorhynchus asiaticus, Oriental Darter Anhinga melanogaster and Grey-headed Fish-Eagle Ichthyophaga ichthyaetus. All species of birds observed during the survey were recorded and some significant records are discussed. Nine of the 47 families were represented by more than seven species (8 to 30), 21 by three to six species and 17 by one or two species. Suggestionsare made forthe introduction of control measures to regulate the intensive fishing activities and agricultural practices of local people on islets in the river. Providing them withalternative sustainable livelihoods may help to sustain the river ecosystem.
Literature type: Action Plan
Language:
Hungarian
(In Hungarian with English summary)
External Link:
Full reference: Bogyó, D., Ecsedi, Z., Tar, J. & Zalai, T. 2013. A kis lilik (Anser erythropus) magyarorszagi fajmegörzesi terve. [Hungarian National Action Plan for Lesser White-fronted Goose (Anser erythropus).] , Ministry of Rural Development, State Secretariat for Environmental Affairs. 93pp.
Keywords: action plan, Hungary, management, conservation, roosting, feeding, actions
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.
Number of results: 103