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The impact of earlier flood recession on metacommunity diversity of wintering Waterbirds at shallow lakes in the middle and lower Yangtze River floodplain

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Avian Research 2023年第2期14卷 223-230页

作者： Zhenhua Wei Lizhi Zhou School of Resources and Environmental Engineering Anhui UniversityHefei230601China Anhui Province Key Laboratory of Wetland Ecosystem Protection and Restoration(Anhui University) Hefei230601China Anhui Shengjin Lake Wetland Ecology National Long-term Scientific Research Base Dongzhi247230China

The hydrological regime in wetlands plays an important role in the process of wintering waterbird metacommunity assemblage.However,increasing frequency of extreme climate and the intensification of human activities,such as the construction of sluices and dams,have resulted in frequently abnormal hydrological regime in the middle and lower Yangtze River floodplain.In recent years,earlier flood recession has become one of the main hydrological problems faced in the shallow lakes,having a great impact on wetland biodiversity.It is necessary to understand the impact of earlier flood recession on Waterbirds,an indicator of wetland biodiversity,and the metacommunity concept is helpful to elucidate the underlying mechanism involved in the processes of assemblage by waterbird communities.In this study,we surveyed the wintering Waterbirds at three sub-lakes of Caizi Lakes during 2019-2020 and 2020-2021 and compared the richness,abundance,alpha and beta diversity of Waterbirds in and among local metacommunities under earlier flood recession and normal hydrological regime.The results showed that the earlier flood recession reduced the species richness in the early stage and abundance in the late stage,it also reduced the Shannon-Wiener index in the early stage and increased the dissimilarity between and within waterbird metacommunities in the late stage.The partition of beta diversity showed that the turnover component played a major role in the process of waterbird metacommunity assemblage.It was found that the earlier flood recession reduced the richness,abundance in different stages of flood recession,which also increased the turnover of Waterbirds.Metacommunities with high habitat heterogeneity had better resistance to abnormal hydrological regime,which resulted in high dissimilarity between and within metacommunities.The results of this study provide important information for waterbird conservation and water level management at shallow lakes in the middle and lower Yangtze River floodplain.

关键词： Beta diversity Flood recession Hydrological regime Metacommunity Shallow lake Waterbirds

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Identification of coastal wetlands of international importance for Waterbirds:a review of China Coastal Waterbird Surveys 2005–2013

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Chinese Birds 2015年第3期6卷 153-168页

作者： Qingquan Bai Jianzhong Chen Zhihong Chen Guotai Dong Jiangtian Dong Wenxiao Dong Vivian Wing Kan Fu Yongxiang Han Gang Lu Jing Li Yang Liu Zhi Lin Derong Meng Jonathan Martinez Guanghui Ni Kai Shan Renjie Sun Suixing Tian Fengqin Wang Zhiwei Xu Yat-tung Yu Jin Yang Zhidong Yang Lin Zhang Ming Zhang Xiangwu Zeng Forestry Bureau of Dandong Tianjin Birdwatching Society Xiamen Birdwatching Society Shenzhen Birdwatching Society Management Office of Guangdong Neilingding–Futian National Nature Reserve Shanghai Huaxia Wildlife Travel Limited The Hong Kong Bird Watching Society Xugou Primary School Kadoorie Conservation China Kadoorie Farm & Botanic Garden Corporation Spoon-billed Sandpipers in China State Key Laboratory of Biocontrol and College of Ecology and Evolution Xiamen Costal Wetlands and Birds Research Center Department of Life Science Cangzhou Normal University 14 bis rue des Temples45240 La FertéSaint AubinFrance Fujian Birdwatching Society Management Office of Yellow River Delta National Nature Reserve Guangxi Mangrove Research Center Tianjin Natural History Museum Shanghai Wildbird Society Panjin Birdwatching Society Panjin Maternal and Child Care Service Centre Haifeng Nature Reserve

Background:China's coastal wetlands belong to some of the most threatened ecosystems worldwide.The loss and degradation of these wetlands seriously threaten Waterbirds that depend on wetlands.Methods:The China Coastal Waterbird Census was organized by volunteer birdwatchers in China's coastal region.Waterbirds were surveyed synchronously once every month at 14 sites,as well as irregularly at a further 18 sites,between September 2005 and December 2013.Results:A total of 75 species of Waterbirds met the 1 % population level Ramsar listing criterion at least once at one site.The number of birds of the following species accounted for over 20 % of the total flyway populations at a single site:Mute Swan(Cygnus olor),Siberia Crane(Grus leucogeranus),Far Eastern Oystercatcher(Haematopus osculans),Bar-tailed Godwit(Limosa lapponica),Spotted Greenshank(Tringa guttifer),Great Knot(Calidris tenuirostris),Spoon-billed Sandpiper(Calidris pygmeus),Saunders' s Gull(Larus saundersi),Relict Gull(Larus relictus),Great Cormorant(Phalacrocorax carbo),Eurasian Spoonbill(Platalea leucorodia),Black-faced Spoonbill(Platalea minor) and Dalmatian Pelican(Pelecanus crispus).A total of 26 sites supported at least one species of which their number met the1 % criterion.Forty-two species met the 1 % criterion in the Yellow River Delta,Shandong;29 at the Cangzhou coast,Hebei and 26 species at the Lianyungang coast,Jiangsu.Conclusions:The results highlight the international importance of China's coastal wetlands for Waterbirds.This study also demonstrates that participation of local birdwatchers in waterbird surveys results in data that are invaluable not only for understanding the current status of Waterbirds in China's coastal regions but also for waterbird conservation and management.

关键词： 1 % criterion Citizen science Coastal wetlands Ramsar site Waterbirds

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Waterbirds in the Wetlands of Casiguran, Aurora, Philippines

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Open Journal of Ecology 2023年第5期13卷 248-256页

作者： Mary Jane A. Marigmen Department of Forestry and Environmental Science Aurora State College of Technology Baler Philippines

The wetlands of Casiguran, Aurora, Philippines are primarily the source of livelihood for most of the coastal communities of the area. However, this also serves as a feeding ground for many of the migratory and resident Waterbirds. There are waterbird species occurring in the area that need protection but only a few studies of these species exist. This study was conducted from February to March 2019 to census and identify the water birds present in the study site, determine the conservation status and index of abundance of identified Waterbirds, and describe their habitat association. Based on the result, 18 waterbird species in five families were present in the area. Family Ardeidae had six representative species, Family Charadriidae had five representative species, Family Scolopacidae had five representative species while only one species represents the Family Anatidae and Family Rallidae. Two waterbird species observed (Anas luzonica and Egretta eulophotes) were listed by the International Union for Conservation of Nature (IUCN) as vulnerable and another species (Numerius madagascariensis) was listed as endangered. In terms of abundance, Intermediate Egret (Egretta intermedia) was revealed as the most abundant (94.68%) among Waterbirds. Different waterbird species prefer specific habitats. Some usually frequent freshwater and saltwater habitats, including mangroves, open sea, and watercourses inside forests while some were observed in mudflats, and rice fields during the survey.

关键词： Waterbirds Wetlands Conservation Status Abundance Habitat Association

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Nestedness of waterbird assemblages in the subsidence wetlands recently created by underground coal mining

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Current Zoology 2019年第2期65卷 155-163页

作者： Chunlin LI Binbin ZHAO Yanping WANG School of Resources and Environmental Engineering Anhui University Hefei 230601 China Jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life Sciences Nanjing Normal University Nanjing 210023 China College of Life Sciences Zhejiang University Hangzhou 310058 China

Nestedness has been a research focus in fields of island biogeography and community ecology in recent decades. Although nestedness of faunal assemblages has been investigated in natural wetlands, it remains largely unknown whether and why waterbird communities in artificial wetlands follow n ested patter ns. We exami ned the existence of n ested ness and un derlyi ng drivers in waterbird comm un ities in subside nee wetlands that are recently created by large-scale un derground coal mining in the North China Plain. Twelve point-count surveys for Waterbirds were undertaken approximately every 2 weeks in 55 subside nee wetla nds from September 2016 to April 2017. We used the metric WNODF to estimate nestedness of the assemblages. Partial Spearman rank correlations were performed to examine the association between the nestedness and habitat variables (wetland area, landscape connectivity, wetland age, and habitat diversity) as well as life-history traits (body size, clutch size, dispersal ratio, geographical range size, and migrant status) related to species exti notion risk and colon izati on rate. Waterbird assemblages in the subside nee wetla nds were significantly nested. After controlling for other independent variables, the magnitude of nestedness was significantly and negatively correlated with wetland area and species trait linked to extinction risk (i.e., geographical range size). Our results indicate that selective extinction may be the main driver of the nestedness of waterbird assemblages in our study system. However, the nestedness was not due to passive sampling, selective colonization, or habitat diversity. From a conservation viewpoint, both large wetlands and Waterbirds with a small geographic range should be protected to maximize the preserved species richness.

关键词： geographical range size nested pattern selective extinction Waterbirds WNODF

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Water Hyacinth impacts on the status of the Garganey, Pheasant-tailed Jacana and other Waterbirds in Kerala

Water Hyacinth impacts on the status of the Garganey, Pheasa...

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23rd International Ornithological Congress

作者： E.A.A.Shukkur Division of Wildlife Biology Dept. of Zoology Farook College P.O. Farook College Calicut Dt Kerala India 673632

＜正＞ Populations of the Garganey （Anas querquedula） have been reduced to zero in the last two years in many parts of North Kerala, India. Compared to their abundance until the 1990s, only 143 visited Azhijilam wetland area near Farook College （Calicut, Kerala） in the winter of 1998 - 1999. The Pheasant-tailed Jacana （Hydrophasianus chirurgux） disappeared in the 1980s, the last recorded in 1986. Reclamation of wet lands and

关键词： waterweed succession Waterbirds habitat alienation population depression.

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Using miniaturized GPS archival tags to assess home range features of a small plunge-diving bird:the European Kingfisher(Alcedo atthis)

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Avian Research 2021年第3期12卷 354-363页

作者： Raphaël Musseau Melina Bastianelli Clementine Bely Céline Rousselle Olivier Dehorter BioSphère Environnement 52 quai de l’Estuaire17120 Mortagne-sur-GirondeFrance Centre de Recherches sur la Biologie des Populations d’Oiseaux UMR 7204 CNRS MNHN SU‒CESCO:Centre d’Ecologie et des Sciences de la ConservationMuséum National d’Histoire Naturelle43 rue Buffoncase postale 13575005 ParisFrance

Background:The European Kingfisher(Alcedo atthis)is a small plunge-diving bird,today considered a species of conservation concern in Europe given its rapid population decline observed across the continent.We implemented a pilot study aimed at providing first data allowing to:(1)assess home range features of the European Kingfisher for populations with unevenly distributed feeding habitats;(2)define conservation implications for habitats exploited by such populations;and(3)evaluate possibilities for developing GPS tracking schemes dedicated to home range stud-ies for this species that could be possibly applied to other small plunge-diving birds.Methods:In 2018 and 2019,we equipped 16 breeding European Kingfishers sampled within the marshes of the Gironde Estuary(France),with miniaturized and waterproof GPS archival tags deployed with leg-loop harnesses(total equipment mass=1.4 g;average bird mass=40.18±1.12 g).Results:On average,we collected 35.31±6.66 locations usable for analyses,without a significant effect on bird body condition(n=13 tags retrieved).Data analyses highlighted rather limited home ranges exploited by birds(aver-age=2.50±0.55 ha),composed on average by 2.78±0.40 location nuclei.Our results also underscore:(1)a rather important home range fragmentation index(0.36±0.08);and(2)the use by birds of different types of small wetlands(wet ditches,small ponds or small waterholes),often exploited in addition to habitats encompassing nest locations.Conclusions:Our study reveals interesting GPS tracking possibilities for small plunge-diving birds such as the European Kingfisher.For this species,today classified as vulnerable in Europe,our results underline the importance of developing conservation and ecological restoration policies for wetland networks that would integrate small wet-lands particularly sensitive to global change.

关键词： GPS tracking Habitat connectivity Small wetlands Waterbirds Wetland ecological networks

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Waterbird use of farm dams in south-eastern Australia:abundance and influence of biophysical and landscape characteristics

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Chinese Birds 2017年第1期8卷 12-24页

作者： Andrew J.Hamilton ChloéConort Aurore Bueno Christopher G.Murray James R.Grove Faculty of Veterinary and Agricultural Sciences The University of MelbourneDookie CampusCurrawaVIC 3647Australia Office of the Deputy Vice-Chancellor(Research and Innovation) Federation University AustraliaBallaratVIC 3353Australia Department of Rural Health Melbourne Medical School49 Graham StreetPO Box 6500SheppartonVIC 3632Australia École Nationale Supérieure Agronomique de Toulouse 31326 Castanet TolosanFrance Faculty of Science The University of MelbourneParkvilleVIC 3010Australia Faculty of Science Department of GeographyThe University of MelbourneParkvilleVIC 3010Australia

Background: While agriculture has taken much environmental water in Australia's Murray-Darling Basin, agricultural expansion has resulted in a vast number of farm dams, almost three-quarters of a million in the Murray-Darling Basin alone.Methods: Over a summer we studied(1) waterbird abundance and species richness and(2) the influence of biophysical and landscape characteristics across 49 farm dams at a large mixed-enterprise farm in northern Victoria on the southern reach of the Murray-Darling Basin.Results: On average, dams were found to host 27.1 ± 71.1 individuals/ha and 1.8 ± 2.9 species per pond. Such densities are comparable to those on natural wetlands. Dam surface area and perimeter and amount of vegetation were positively and strongly correlated with the Rallidae density(birds/ha), but no other parameters were strongly correlated with any other functional group. The landscape in which the dams were embedded had a highly significant effect(p < 0.001) on the number of birds found on a dam.Conclusions: Our research needs to be complemented with further studies in other parts of the Basin and on other taxa, but given at our site they supported similar densities of individuals and species to natural wetlands, and given the fact that there are 710,539 farm dams in the Murray-Darling Basin, which hosts much of Australia's waterbird fauna, it is reasonable to suggest that farm dams are overlooked, and possibly very important, avian biodiversity hotspots. It also highlights the importance of a landscape setting, in which dams are situated, on the number of birds using the dams.

关键词： Farm ponds Waterbirds Waterfowl Zooplankton

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Temporal-spatial patterns of intestinal parasites of the Hooded Crane(Grus monacha) wintering in lakes of the middle and lower Yangtze River floodplain

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Chinese Birds 2014年第1期5卷 40-48页

作者： Wei Huang Lizhi Zhou Niannian Zhao Institute of Biodiversity and Wetland Ecology School of Resources and Environmental Engineering Anhui University Anhui Provincial Species Information Center Anhui Shengjin Lake National Nature Reserve

Background: Parasites have adverse effects on the life and survival of many migratory Waterbirds, especially birds on the endangered species list. Hooded Cranes are large migratory colonial Waterbirds wintering in wetlands,which are prone to parasite infection, thus monitoring the diversity of parasites is important for sound wetland management and protection of this species.Methods: From November 2012 to April 2013, we collected 821 fresh faecal samples from the three lakes(Poyang,Caizi and Shengjin Lake) in the lower and middle Yangtze River floodplain, and detected with saturated brine floating and centrifugal sedimentation methods. Parasite eggs were quantified with a modified Mc Master's counting method.Results: In this study, 11 species of parasites were discovered, i.e., two coccidium(Eimeria gruis, E. reichenowi), five nematodes(Capillaria sp., Strongyloides sp., Ascaridia sp., Trichostrongylus sp., Ancylostomatidae), three trematodes(Echinostoma sp., Echinochasmus sp., Fasciolopsis sp.) and one cestode(Hymenolepis sp.). About 57.7% of the faecal samples showed parasitic infection. All species of parasites were found at the three sites except Hymenolepis which was not found at Poyang Lake. While most samples were affected by only one or two species of parasites, infection by Eimeria spp. was the most common(53.1%). From One-Way ANOVA analysis of the three lakes, parasite species richness index(p = 0.656), diversity index(p = 0.598) and evenness index(p = 0.612) showed no significant difference. According to the statistical analysis of our data, there were no significant difference in parasite species richness index(p = 0.678) and evenness index(p = 0.238) between wintering periods, but a strong difference in diversity index(p < 0.05).Conclusions: Our study suggests that in the wintering Hooded Crane populations, parasite diversity is more sensitive to changes in the overwintering periods than to locations. This also indicates that with the limitations of migration distance, the parasites may not form the

关键词： Hooded Crane Wintering population Migratory Waterbirds Faecal parasite Parasite diversity

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Distribution and Forage Potential of Some Insect Taxa Sampled with Sweep Nets in the Flood Plains of a Coastal Ramsar Site in Ghana

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Open Journal of Ecology 2014年第3期4卷 135-144页

作者： Francis Gbogbo Daniel Osei Yeboah Maxwell K. Billah Department of Animal Biology and Conservation Science University of Ghana Legon

Wetland insect communities are an important food source for Waterbirds. Yet studies on insect communities in West African coastal wetlands—a major foraging area for wintering Waterbirds of the East Atlantic and Mediterranean flyways—are generally limited. This study investigated the forage potential, micro-spatial and temporal distribution of insects swept from air and low vegetation in Sakumo II—a coastal Ramsar site in Ghana. Insects of the families Thripidae, Coccinellidae, Tetrigidae and Acrididae dominated the wetland. Based on prey yield and abundance, Acrididae, Coccinellidae and Tetrigidae appeared to be most promising source of food for Waterbirds. Despite the high abundance of Thripidae, their low per capita biomass rendered them a less promising food source particularly to large sized waterbird species. Spatial and temporal abundance and distributions of insects along both the latitudinal and longitudinal axes of the lagoon were non-significant. In recognition of the diversity and abundance of insects on the wetland, there is the need to investigate the disparity in the utilisation of the various taxa by waterbird species.

关键词： Insecta Waterbirds Distribution Forage Biomass

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Riparian and Riverine Wildlife Response to a Newly Created Bridge Crossing

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Natural Resources 2012年第4期3卷 213-228页

作者： Joshua A. Vance Norse B. Angus James T. Anderson West Virginia Department of Transportation Division of Highways Charleston USA West Virginia University Division of Forestry and Natural Resources Morgantown USA

Construction of man-made objects such as roads and bridges can influence wildlife presence and abundance. We investtigated Waterbirds, songbirds, anurans, turtles, small mammals, and furbearers along the Ohio River, WV, at a new bridge crossing, a 45-year old bridge, and 1 or 2 islands with no bridge and at 3 distances from the bridge or center point at each site (0 m,100 m, and300 m). We sampled 19 waterbird, 60 songbird, 7 anuran, 5 turtle, 9 small mammal, and 4 furbearer species. Great blue heron (Ardea herodias) abundances were greater at the site with no bridge. Songbird composition differed among sites and between transects under and away from the bridge with higher abundances or association of rock pigeon (Columba livia) and cliff swallow (Petrochelidon pyrrhonota) under the bridges and lower abundances ofCarolinawren (Thryothorus ludovicianus) and common yellowthroat (Geothlypis trichas) under the bridges. Total small mammal abundance, diversity, and richness were lower under the new bridge compared to other sites and distances. We conclude that overall the new bridge is causing minimal relative abundance impacts to wildlife. However, great blue heron abundance may be altered due to noise and activity from the presence of the bridge and minor short-term impacts to some songbirds and small mammals directly under the bridge in the form of habitat conversion, fragmentation, and loss due to removal of vegetation is apparent.

关键词： Great Blue Heron Road Effects Small Mammals Songbirds Waterbirds

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