53, 12 (2014). Nilsson L: Changes in numbers and distribution of wintering waterfowl in Sweden during forty years, 1967–2006. The understanding of population dynamics in animals is a major topic in ecology, and bird species have been the subject of considerable research efforts (summarised by Perrins et al. In contrast, the greatest long-term declines were found for two diving duck species: common pochard and tufted duck. Among the waterfowl, Dalmatian pelican, great cormorant Phalacrocorax carbo, little egret Egretta garzetta, great egret Casmerodius albus, grey heron Ardea cinerea and greater flamingo increased by more than 5% per year. Combined estimates showed that there was a moderate annual increase in the total number of waterfowl (2%), waders (4%) and the overall waterbird species assemblage (2.2%) at Messolonghi between 1982 and 2012 (Table 2, Figure 3). Midwinter monitoring of waterbird populations is conducted annually since 1982 in all large Greek wetlands, and counts have been submitted for inclusion in the IWC. Bird Conserv Int 2011, 21: 438–453. Cookies policy. The new population projections indicate that nine countries will make up more than half the projected growth of the global population between now and 2050: India, Nigeria, Pakistan, the Democratic Republic of the Congo, Ethiopia, the United Republic of Tanzania, Indonesia, Egypt and the United States of America (in descending order of the expected increase). SEV suggested that measures be taken to ease the tax burden imposed on families, provide women with post-maternity leave job security, facilitate women's return to work through universal access to childcare, provide tax incentives for the return of Greeks living abroad and implement policies aimed at attracting skilled immigrants to be employed in the most promising sectors of the economy. Despite their importance for waterbirds, almost half of the world's natural wetlands have disappeared in the last century due to anthropogenic activities, while the other half have been variously affected (Shine and Klemm 1999). 10.1111/gcb.12200. 2009), the UK (Calbrade et al. Excluding wildfowl, black-necked grebe was the only declining species in the waterfowl and allies group, and for that reason, population alerts were generated. Glob Chang Biol 2008, 14: 2489–2500. Gulls and terns were not included in the analysis since they were not intensively monitored, especially in the early years, and (for the gulls at least) their distributions are generally too widespread for adequate monitoring by this method alone. 1997; Mix and Bräunlich 2000). Laursen K, Frikke J: Assessment of sustainable management of staging waterbirds in the Danish Wadden Sea. Messolonghi is situated in western Greece, in the western part of Sterea Ellas Region, Aitoloakarnania Prefecture (37° 40′ to 39° 40′ N, 20° 10′ to 21° 30′ E) and is one of the two largest Greek wetland complexes (Amvrakikos being the other one), totalling 258 km2 (Figure 1). This wetland complex is very important for some 173 wintering and breeding migratory bird species (Zalidis and Mantzavelas 1994) and was therefore designated as a Ramsar site in 1975 and a National Park in 2006. Apart from that, a sharp increase is also predicted in the number of individuals over 85 years of age. 2007). 2nd edition. Wetlands International: Wageningen; 1996. California Privacy Statement, PubMed Google Scholar. Migratory waterbirds and the wetland habitat that supports them are protected in European countries under international conventions (e.g. 10.1080/00063650809461506, Dalby L, Fox AD, Petersen IBK, Delany S, Svenning J-C: Temperature does not dictate the wintering distributions of European dabbling duck species. The midwinter counts methodology presents several shortcomings: (a) population maxima may occur on earlier or later dates, (b) several duck species may disperse far at sea and become invisible from land, (c) some species, such as little grebe Tachybaptus ruficollis, northern lapwing Vanellus vanellus, Eurasian golden plover Pluvialis apricaria and Eurasian curlew Numenius arquata in certain years might be hidden in vegetation during the counts. For details, please see your browser’s Help section (by pressing F1). Lehikoinen et al. As a result of this sharp drop, according to SEV, the population has been decreasing. Oxford: Oxford University Press; 2005. All important statistics are prepared by our experts – available for direct download as PPT & PDF! Eurasian coot Fulica atra, Eurasian wigeon Anas penelope, common teal Anas crecca and common pochard Aythya ferina were the most numerous waterfowl species. It might be that ecological conditions have become better for selected species at Messolonghi relative to those at other sites or vice versa. ATHENS -- There are just a few countries in the world that have experienced a stronger population decline in recent years than Greece. But in every case, readers have called my attention to what they see as an underlying and even defining dimension of all these issues -- if not right now, then soon. Such information could help managers make better decisions and could also be used as a basis for future comparisons with both local and flyway populations. The potential support ratio, which compares numbers of persons at working ages to those over age 65, is falling around the world. The wetland complex has been divided into 21 suitable sectors to allow for the monitoring of all available habitats, namely lagoons, open sea, saltworks, rivers and estuaries, salt marshes, mudflats, reed beds, adjacent cultivated and fallow land, ditches and halophytic grassland. IUCN red list of threatened species. Zool. Greece has a duty to reverse the demographic decline, the bulletin concluded, something that can be achieved through rethinking the country's priorities in terms of its fiscal and migration policies. Correspondence to The southwest Asian population of greater flamingo is currently stable, whereas the West Mediterannean population is currently increasing, mainly due to the protection of breeding sites (Martos and Johnson 1996; Miltiadou 2005). These increases have mainly been attributed to the legal protection of the species and their habitats and the increase in fish productivity due to eutrophication of aquatic habitats (Van Eerden et al.
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