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Journal articles on the topic 'Wintering sites assessment'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Stanchev, Radoslav, and Boris Nikolov. "Wetlands importance for the waterfowl species (order Anseriformes) wintering in Bulgaria, based on the Mid-Winter Waterbird Census data." Journal of the Bulgarian Geographical Society 52 (May 5, 2025): 79–92. https://doi.org/10.3897/jbgs.e144247.

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The main approach for the conservation of wintering waterbirds is through the identification of wintering sites, the assessment of their abundance and the determination of wintering population trends. The target sites are set for the implementation of management measures for both wintering species populations and sites falling within the Natura 2000 National Ecological Network. The aim of the present study is to identify the most important waterbodies in the country, based on data from the mid-winter waterbird census during the period 1977–2021. The assessment covers 75 waterbodies falli

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Stanchev, Radoslav, and Boris Nikolov. "Wetlands importance for the waterfowl species (order Anseriformes) wintering in Bulgaria, based on the Mid-Winter Waterbird Census data." Journal of the Bulgarian Geographical Society 52 (May 5, 2025): 79–92. https://doi.org/10.3897/jbgs.e144247.

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The main approach for the conservation of wintering waterbirds is through the identification of wintering sites, the assessment of their abundance and the determination of wintering population trends. The target sites are set for the implementation of management measures for both wintering species populations and sites falling within the Natura 2000 National Ecological Network. The aim of the present study is to identify the most important waterbodies in the country, based on data from the mid-winter waterbird census during the period 1977&ndash;2021. The assessment covers 75 waterbodies f

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3

Wang, Chunxiao, Xiubo Yu, Shaoxia Xia, Yu Liu, Junlong Huang, and Wei Zhao. "Potential Habitats and Their Conservation Status for Swan Geese (Anser cygnoides) along the East Asian Flyway." Remote Sensing 14, no. 8 (2022): 1899. http://dx.doi.org/10.3390/rs14081899.

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Habitats provide essential space for migratory birds to survive and reproduce. Identifying potential habitats in annual cycle stages and their influencing factors is indispensable for conservation along the flyway. In this study, we obtained satellite tracking of eight swan geese (Anser cygnoides) wintering at Poyang Lake (28°57′4.2″, 116°21′53.36″) from 2019 to 2020. Using the Maximum Entropy species distribution model, we investigated the potential habitats distribution of the swan geese during their migration cycle. We analyzed the relative contribution of various environmental factors to h

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SEHHATISABET, MOHAMMAD E., FAZEL ABDI, ABBAS ASHOORI, et al. "Preliminary assessment of distribution and population size of wintering Little Bustards Tetrax tetrax in Iran." Bird Conservation International 22, no. 3 (2012): 279–87. http://dx.doi.org/10.1017/s0959270911000281.

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SummaryLittle Bustard Tetrax tetrax surveys were conducted in Iran in autumn and winter from 2005/2006 to 2008/2009. Across northern Iran, Little Bustard presence was confirmed at 15 of the 84 sites visited during the surveys. Three main wintering regions were identified: the Moghan Plain in the north-west of the country, the Turkmen Sahra Plain at the south-east corner of the Caspian Sea and the Sarakhs Plain in the north-east, close to the Afghan border. Up to 10,050 individuals were counted in winter 2009 in the Moghan Plain, which was recognised as the most important area for wintering Lit

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Schally, Gergely. "Assessment of the breeding and wintering sites of Eurasian Woodcock (Scolopax rusticola) occurring in Hungary based on ringing recovery data." Ornis Hungarica 27, no. 1 (2019): 110–16. http://dx.doi.org/10.2478/orhu-2019-0007.

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Abstract Using the latest dataset of the Hungarian Bird Ringing Centre, the aims of this study were to describe the monthly spatial pattern of woodcock occurrence and to assess the main wintering and breeding areas of the birds associated with Hungary in the last decade. Descriptive analyses were performed regarding the annual number of detections (ringing, recaptures and recoveries), and the relation between the annual number of woodcock ringers and the number of ringed birds was tested. Minimum convex polygons (MCP) were calculated for the detections of each month, and the variation of the m

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Stoyanova, Aleksandra, and Ralitza Berberova. "Data analysis of the mid-winter census of wintering aquatic birds on the territory of Ramsar sites along the Bulgarian Black Sea coast for the period 2012 – 2021." Annual of Natural Sciences Department 8 (December 30, 2023): 8–19. https://doi.org/10.33919/ansd.23.8.2.

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Wetlands along the Bulgarian Black Sea coast are important wintering points for aquatic birds during the winter period, which is why the site is included in the mid-winter census, which is part of ornithological monitoring in our country. Based on the results obtained from it, an assessment of the ornithological status can be made and the environmental factors influencing it can be analyzed. The purpose of the study is to present a summary and analysis of census data on the species composition and number of waterfowl in the region of the Ramsar sites on the Bulgarian Black Sea coast for the pe

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Fanelli, Giuliano, and Corrado Battisti. "Comparing disturbance-sensitivity between plants and birds: a fine-grained analysis in a suburban remnant wetland." Israel Journal of Ecology and Evolution 60, no. 1 (2014): 11–17. http://dx.doi.org/10.1080/15659801.2013.924326.

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Hemeroby is a concept widely employed in assessment of the effect of human activities on vegetation. In this study, we apply the concept to a set of bird species occurring in a Mediterranean remnant wetland. The aim was to obtain an average hemeroby index for two seasonally related bird assemblages (i.e. breeding and wintering) based on the information related to two levels of plant hemeroby. In a grid of 47 cells 100×100 m-wide, we sampled the fine-grained distribution of plant communities (Braun-Blanquet method/cell) in parallel with birds (point count method; one point count/cell), assignin

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CONG, PEIHAO, LEI CAO, ANTHONY D. FOX, et al. "Changes in Tundra Swan Cygnus columbianus bewickii distribution and abundance in the Yangtze River floodplain." Bird Conservation International 21, no. 3 (2011): 260–65. http://dx.doi.org/10.1017/s0959270911000098.

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Approximately 75% of the East Asian Flyway Tundra Swan Cygnus columbianus bewickii population winters in the Yangtze River floodplain, China. Historically the species was more widely distributed throughout the floodplain but now most of the population is confined to five wetlands in Anhui Province and to Poyang Lake in Jiangxi Province, where the majority (up to 113,000 birds) occur. Within-winter counts suggest that swans congregate at Poyang Lake before dispersing to other sites later in the winter. Counts show large between-year fluctuations, but suggest declines at Shengjin and Fengsha Lak

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Drever, Mark C., Dominique Chabot, Patrick D. O'Hara, Jeffrey D. Thomas, André Breault, and Rhonda L. Millikin. "Evaluation of an unmanned rotorcraft to monitor wintering waterbirds and coastal habitats in British Columbia, Canada." Journal of Unmanned Vehicle Systems 3, no. 4 (2015): 256–67. http://dx.doi.org/10.1139/juvs-2015-0019.

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The effective protection of coastal and estuarine habitats requires reliable monitoring information on their use by waterbirds, and the use of small unmanned aircraft systems (UAS) may provide access to these habitats without disturbing birds. We evaluated the use of a rotary-wing UAS with a high-end consumer camera to identify and count wintering waterbirds at two coastal sites in British Columbia, Canada, in January 2015, and to map mudflat and marsh habitats. Photos of shorebirds, waterfowl, and seabird species were taken at varying altitudes, and disturbance of birds appeared minimal when

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10

Byju, H., K. A. Rubeena, C. T. Shifa, et al. "Transitioning Wintering Shorebirds to Agroecosystem: A Thorough Evaluation of Habitat Selection and Conservation Concern." Diversity 16, no. 1 (2023): 23. http://dx.doi.org/10.3390/d16010023.

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Habitat fragmentation and degradation in natural wetlands has resulted in declines in the populations of shorebirds in the Indian subcontinent. Shorebirds rely on these wetlands as wintering or stop-over sites along the southern extent of the Central Asian Flyway. Shorebirds are known to utilize agroecosystems as alternate foraging habitats. The suitability of agroecosystems as foraging areas for overwintering migratory shorebirds has not been well studied in the Indian subcontinent. We conducted a comprehensive assessment of published literature and compiled field observations to investigate

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Cerfolli, F., and C. Battisti. "Urban waste-water treatment plants as hotspots for birds : an environmental assessment highlights the role of a single dominant gull." Life and Environment 74, no. 1/2 (2024): 74–83. http://dx.doi.org/10.57890/ydd70f52.

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Waste-water treatment plants (WWTPs) are still little explored in their ecological role. This work reports data obtained from standardized sampling for the two largest Italian WWTPs, to obtain seasonal patterns (late winter, spring, and autumn) of univariate diversity metrics in bird communities. The ecological conditions, linked above all to the high availability of water, with the presence of mud and trophic resources, and heterogeneous features (buildings, trees, and hedges), allow the presence of water-related and synanthropic bird species, using the site as a seasonal stopover and winteri

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Jordi, O., A. Herrero, A. Aldalur, J. F. Cuadrado, and J. Arizaga. "The impact of non–local birds on yellow–legged gulls (Larus michahellis) in the Bay of Biscay: a dump–based assessment." Animal Biodiversity and Conservation 37, no. 2 (2014): 183–90. http://dx.doi.org/10.32800/abc.2014.37.0183.

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Understanding how animals exploit non–natural feeding sources such as garbage dumps is necessary from many perspectives, including conservation, and population dynamics and management. Several large predatory gulls (Larus spp.) are among the species which most clearly benefit from using dumps. The yellow–legged gull (L. michahellis) is the most abundant gull in the southwestern Palaearctic, and its fast population increase until at least the 2000s was partly due large waste dumps becoming more numerous. The Bay of Biscay is an area that hosts resident local and also wintering non–local yellow–

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Cody, Martin, and Stephen Cain. "Monitoring Breeding Bird Populations in Grand Teton National Park: 1995-1997." UW National Parks Service Research Station Annual Reports 21 (January 1, 1997): 13–25. http://dx.doi.org/10.13001/uwnpsrc.1997.3311.

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In summer 1997 our NPS-funded project # CA-1460-5-0010, covering a 3-y period from summer 1995 through summer 1997, was completed. The immediate goals of the project were to instigate a system for monitoring the densities of breeding bird species, by establishment of flxed sites as a basis for a long term monitoring plan and of census protocols that can detect changes of breeding species and their densities over successive years. The monitoring scheme is conducted largely within Grand Teton National Park (GTNP), but covers habitats and an avifauna representative of the Greater Yellowstone Ecos

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VEGA RIVERA, JORGE H., MIGUEL A. ORTEGA-HUERTA, SAHOTRA SARKAR, and JOHN H. RAPPOLE. "Modelling the potential winter distribution of the endangered Black-capped Vireo (Vireo atricapilla)." Bird Conservation International 21, no. 1 (2010): 92–106. http://dx.doi.org/10.1017/s0959270910000365.

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SummaryWe applied the ecological niche/habitat modelling approach to predict the potential winter distribution of the endangered Black-capped VireoVireo atricapilla. We used historical and current field records along with climatic and topographic variables to generate three different models (Biomapper, Maxent, and GARP). Using field data on species occurrence, a model was selected based on the accuracy of assessment results. A final model was obtained by eliminating those areas mapped as known unsuitable habitat, using high resolution land use/land cover data. The GARP model obtained the best

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15

Dudkin, Sergej I., Sergey Yu Leontiev, and Arsen V. Mirzoyan. "The state of stocks and catches of commercial fish species of the Azov and Black Seas for the period 2000–2020: dynamics and trends." Trudy VNIRO 195, no. 1 (2024): 35–44. http://dx.doi.org/10.36038/2307-3497-2024-195-35-44.

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The aim to review the state of stocks and fishing against the background of changes in habitat conditions, commercial fish species of the Azov and Black Seas for the period 2000–2020.Materials: Regular scientific research, including: hydrological, hydrochemical, hydrobiological studies, bottom trawl and pelagic lamparian ichthyological surveys; collection and analysis of commercial biological information; analysis of commercial statistical data.Novelty: The dynamics of the values and state of stocks of commercial fish species in the conditions of climate change is shown. In the Black Sea, the

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Vasev, A. B., V. A. Luzhnyak, V. V. Barinova, S. O. Vakulenko, V. A. Belyaev, and A. V. Mirzoyan. "RESULTS OF THE INVESTIGATION OF THE AZOV SEA POPULATIONS OF STURGEON FISH SPECIES AS A PART OF MONITORING THE CATCHES BY STATIONARY FISHING GEARS ALONG THE KUBAN COAST." Водные биоресурсы и среда обитания 6, no. 4 (2023): 68–78. http://dx.doi.org/10.47921/2619-1024_2023_6_4_68.

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Introduction. After depletion of the Russian sturgeon Acipenser gueldenstaedtii Brandt & Ratzeburg, 1833 and stellate sturgeon Acipenser stellatus Pallas, 1771 stocks at the end of the 20th century, their abundance in the Azov and Black Sea Basin has been maintained through the release of the juveniles obtained by the means of artificial reproduction. Resulting from the strengthening protection of the aquatic living resources and gradually increasing number of the released juveniles, since 2014, as evidenced by the research studies, an increase in the population abundance of these fish spe

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Kupriyanova, E. V., M. Yu Solomonova, E. D. Trubitsyna, et al. "Genesis and functions of the Late Bronze Age ash heaps in the Southern Trans-Urals in the context of new interdisciplinary research." VESTNIK ARHEOLOGII, ANTROPOLOGII I ETNOGRAFII, no. 4(67) (December 15, 2024): 36–55. https://doi.org/10.20874/2071-0437-2024-67-4-3.

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In this article, we discuss the results of the study of ash heaps typical for the steppe belt of the Urals, Ka-zakhstan and Siberia. These are specific objects adjacent to settlements of the Middle and Late Bronze Age, their cultural layer contains archaeological finds and consists of loose soil similar in appearance to ash. However, de-bates about their nature and purpose use mainly archaeological arguments and very rarely involve interdiscipli-nary data. The study is focused on two ash heaps at the Bronze Age settlements in the Southern Trans-Urals — Streletskoye-1 and Chernorechye 2 (Chelya

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18

Oborskyi, V., N. Mykhailenko, T. Bersan, H. Kurinenko, and L. Drahan. "Analysis of water parameters in experimental ponds of PRJSC “Khmelnytskrybhosp” as a prerequisite for the creation of replacement and brood stocks of Antoniny-Zozulenets carps (Cyprinus carpio Linnaeus, 1758)." Ribogospodarsʹka nauka Ukraïni., no. 2(72) (June 30, 2025): 98–117. https://doi.org/10.61976/fsu2025.02.098.

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Purpose. To provide an assessment of the temperature and oxygen regimes, considering the main chemical parameters of water when creating replacement and brood stocks of Antoniny-Zozulenets carps grown in the conditions of PrJSC “Khmelnytskrybhosp”. Methodology. The study was conducted during 2018–2023 at fish sites “Stara Synyava” and “Medzhibizh” of PrJSC “Khmelnytskrybhosp” of Khmelnytskyi region. The source of water supply for the experimental farm “Stara Synyava” is the Ikva River, for the experimental farm “Medzhibizh” – the Buzhok River. Determination of temperature and dissolved oxygen

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N G, KUMAR, AVINASH T.G., and NIRMALA P. "Mass production of soil mesofauna from the Terminalia arjuna forest ecosystem for reintroduction into degraded agroecosystems." JOURNAL OF SOIL BIOLOGY AND ECOLOGY 44, no. 1 (2024): 35–47. https://doi.org/10.58682/jsbe.44.1/lnpk2391.

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Abstract The 24-month greenhouse study conducted at GKVK campus of the University of Agricultural Sciences, Bengaluru, Karnataka, India, aimed to mass-produce soil mesofauna collected from Terminalia arjuna forest plantations. Over the months, the abundance of mesofauna in soil samples from the forest ecosystem varied, showing lower activity in the summer and increased abundance after rainfall. A particularly noteworthy finding was the highest population (1223 mesofauna/400g soil sample) recorded in January 2020, highlighting the remarkable adaptability and resilience of mesofauna in fluctuati

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Chen, Yiwen, Yat-tung Yu, Fanjuan Meng, Xueqin Deng, Lei Cao, and Anthony David Fox. "Migration routes, population status and important sites used by the globally threatened Black-faced Spoonbill (Platalea minor): a synthesis of surveys and tracking studies." Avian Research 12, no. 1 (2021). http://dx.doi.org/10.1186/s40657-021-00307-z.

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Abstract Background The Black-faced Spoonbill (Platalea minor) is a globally threatened species, nesting mainly in western Korea with smaller numbers breeding in Liaoning Province, China, and Far East Russia. Recent winter field surveys to estimate the species’ population size were almost totally conducted in coastal areas, but tracking studies showed that some individuals now winter inland. To ensure its long-term survival, we need a more comprehensive assessment of the current distribution and abundance of the species. Methods We combined the most recent count data and satellite tracking inf

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Wang, Yuxi, Iderbat Damba, Qingshan Zhao, et al. "Organising a juvenile ratio monitoring programme for 10 key waterbird species in the Yangtze River floodplain: analysis and proposals." Avian Research 12, no. 1 (2021). http://dx.doi.org/10.1186/s40657-021-00309-x.

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Abstract Background In the face of continued degradation and loss of wetlands in the Yangtze River floodplain (YRF), there is an urgent need to monitor the abundance and distribution of wintering waterbirds. To understand fully observed annual changes, we need to monitor demographic rates to understand factors affecting global population size. Annual reproduction success contributes to dynamic changes in population size and age structure, so an assessment of the juvenile ratio (i.e. first winter birds as a proportion of total number aged) of overwintering waterbirds can be an important indicat

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Dufour, Paul, Magnus Hellström, Christophe de Franceschi, et al. "Using age‐ratios to investigate the status of two Siberian Phylloscopus species in Europe." Ibis, December 11, 2024. https://doi.org/10.1111/ibi.13382.

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Distinguishing between vagrancy and regular migration has proved to be challenging as vagrants may, in theory, act as pioneers in the establishment of new migration routes. Because migratory songbirds tend to follow the same orientation and migration route throughout their lives, age assessment can help to distinguish individuals which have already used a route (i.e. adults) from those using it for the first time (i.e. juveniles). The presence of a significant proportion of adult individuals would suggest the presence of regular migrants in a vagrancy context. To decipher the status of two spe

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23

"Modern Approaches to Greening the Urban Environment (on the Example of the Shevchenkovsky District, Kharkov)." Man and Environment. Issues of Neoecology, no. 32 (2019). http://dx.doi.org/10.26565/1992-4224-2019-32-04.

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Purpose. Scientific and practical justification for the introduction of plantings of ornamental perennial cereals and roses of a landscape group in the urban system of the Shevchenkovsky district, Kharkov. Methods For inventory of lawn stands, ArcGIS software was used. The basis for creating an inventory map of lawn stands was two basic maps - “Basemap Imagery” and “OpenStreetMap. The calculation of the total area of the research objects was carried out by using the Attribute Table. Assessment of the design coverage and constitutional structure of the species composition of lawn stands was car

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Pavón‐Jordán, Diego, Anthony D. Fox, Preben Clausen, et al. "Climate‐driven changes in winter abundance of a migratory waterbird in relation to EU protected areas." January 15, 2015. https://doi.org/10.1111/ddi.12300.

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AbstractAimSpecies are responding to climate change by changing their distributions, creating debate about the effectiveness of existing networks of protected areas. As a contribution to this debate, we assess whether regional winter abundances and distribution of the SmewMergellus albellus, a migratory waterbird species listed on Annex I (EUBirds Directive) that overwinters exclusively in European wetlands, changed during 1990–2011, the role of global warming in driving distributional changes and the effectiveness of the network of Special Protection Areas (SPAs,EUBirds Directive) in the cont

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Nerland, Audun Helge, Per Brandtzæg, Merethe Aasmo Finne, et al. "Environmental Risk Assessment of Insect Resistant Genetically Modified Maize MON810 for Cultivation, Seed Production, Import, Processing and Feed Uses under Directive 2001/18/EC (Notification C/F/95/12/02)." European Journal of Nutrition & Food Safety, November 19, 2019, 64–67. http://dx.doi.org/10.9734/ejnfs/2019/v11i230141.

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In preparation for a legal implementation of EU-regulation 1829/2003, the Norwegian Scientific Committee for Food Safety (VKM) has been requested by the Norwegian Directorate for Nature Management to conduct final environmental risk assessments for all genetically modified organisms (GMOs) and products containing or consisting of GMOs that are authorized in the European Union under Directive 2001/18/EC or Regulation 1829/2003/EC. The request covers scope(s) relevant to the Gene Technology Act. The request does not cover GMOs that VKM already has conducted its final risk assessments on. However

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Greenwood, P. R., and R. M. Mcnamara. "An analysis of the physical condition of two intensively grazed Southland soils." Proceedings of the New Zealand Grassland Association, January 1, 1992, 71–75. http://dx.doi.org/10.33584/jnzg.1992.54.2054.

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The treading effects of high-density winter grazing of sheep associated with all-grass wintering systems in Southland were studied for evidence of resultant soil physical degradation. Typical examples of Pukemutu (YGE) and Waikiwi (YBE) soils, extensive areas of which have been intensively managed in Southland for many years, were selected for assessments of mechanical impedance, bulk density, porosity, air permeability, and hydraulic conductivity. The results showed that intensive winter grazing in this environment resulted in significant losses of large soil macropores. As a result, the tran

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Lipińska, Halina, Wanda Harkot, Zbigniew Czarnecki, Rafał Kornas, Ewa Stamirowska-Krzaczek, and Wojciech Lipiński. "The effect of decomposing biomass of the grasses Festuca arundinacea, F. ovina, and F. rubra on the species composition and quality of lawns." Acta Agrobotanica 71, no. 4 (2018). http://dx.doi.org/10.5586/aa.1748.

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<p>The aim of the study was to assess the impact of cut vegetative shoots of chosen lawn grass cultivars of <em>Festuca</em> being left on the lawn sward surface on the species composition, sodding and appearance, and over-wintering of the lawn. The influence of decomposing biomass was studied in a field experiment between 2008 and 2014. Each cultivar was sown as a monoculture on microplots with an area of 1 m<sup>2</sup>. The control consisted of sites from which the cut sward had been removed immediately after cutting.</p><p>The results obtained may

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Andreassen, Åshild, Per Brandtzæg, Merethe Aasmo Finne, et al. "Food/Feed and Environmental Risk Assessment of Insect Resistant Genetically Modified Maize MON810 for Cultivation, Seed Production, Import, Processing and Feed Uses under Directive 2001/18/EC (Notification C/F/95/12/02)." European Journal of Nutrition & Food Safety, January 24, 2020, 250–54. http://dx.doi.org/10.9734/ejnfs/2019/v11i430171.

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In preparation for a legal implementation of EU-regulation 1829/2003, the Norwegian Environment Agency (former Norwegian Directorate for Nature Management) has requested the Norwegian Food Safety Authority (NFSA) to give final opinions on all genetically modified organisms (GMOs) and products containing or consisting of GMOs that are authorized in the European Union under Directive 2001/18/EC or Regulation 1829/2003/EC within the Authority’s sectoral responsibility. The Norwegian Food Safety Authority has therefore, by letter dated 13 February 2013 (ref. 2012/150202), requested the Norwegian S

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Tang, Ningxin, Yanju Ma, Sixin Li, et al. "Identifying the wetlands of international importance in Beibu Gulf along the East Asian – Australasian Flyway, based on multiple citizen science datasets." Frontiers in Marine Science 10 (September 15, 2023). http://dx.doi.org/10.3389/fmars.2023.1222806.

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The Beibu Gulf (Gulf of Tonkin, Vinh Bac Bo in Vietnamese), located midway along the East Asian-Australasian Flyway (EAAF), is a critical stopover and wintering region for migratory waterbirds. This transboundary coastal region, spanning between China and Vietnam, harbors diverse wetland habitats that provide refuge to waterbird species, including highly threatened species such as the spoon-billed sandpiper (CR) and the black-faced spoonbill (EN). However, the scarcity of comprehensive assessments regarding waterbird abundances, distribution, key wetland habitats, and regional threats hinders

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