Waterbirds最新文献_第5页

Effects of Rice Field Water Cycles on the Breeding Biology of Grey Heron (Ardea cinerea) and Conservation Implications 稻田水循环对灰鹭繁殖生物学的影响及其保护意义

IF 0.3 4区生物学

Waterbirds Pub Date : 2023-06-27 DOI: 10.1675/063.045.0311

Mariela Forti, G. Florez-Montero, J. S. Monrós, P. Vera

{"title":"Effects of Rice Field Water Cycles on the Breeding Biology of Grey Heron (Ardea cinerea) and Conservation Implications","authors":"Mariela Forti, G. Florez-Montero, J. S. Monrós, P. Vera","doi":"10.1675/063.045.0311","DOIUrl":"https://doi.org/10.1675/063.045.0311","url":null,"abstract":"Abstract. Wetlands are among the most threatened ecosystems on the planet, largely due to their conversion to agricultural or dry land. L'Albufera de Vàlencia is characterized by a large expanse of rice fields (c. 14,000 ha), which hosts the most important colony of Grey Heron Ardea cinerea on the Mediterranean coast of Spain. The colony was visited every 10 days during February-April of 2016 to 2018 and during May-July of 2015 to 2017. The reproductive parameters were estimated for each year and season. We also monitored the available habitat and habitat use of the species in the rice fields from February 2016 to June 2017. The condition of the rice field was related to reproductive parameters. The breeding period was divided into two stages per year. In 2016 all reproductive parameters were lower values, coinciding with a larger area of dry fields in winter and low rainfall in summer. Breeding success was found to be positively associated with the muddy/semi-flooded fields and negatively associated with the sown fields. Like Grey Heron, other waterbirds species nesting in L'Albufera de Valencia could depend on the condition of the rice fields for breeding success. Their reproductive requirements should be considered in rice cultivation management.","PeriodicalId":54408,"journal":{"name":"Waterbirds","volume":"24 1","pages":"328 - 344"},"PeriodicalIF":0.3,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86598678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Comparing In-Person Versus Camera Monitoring of Shorebird Reproductive Success 比较现场与摄像机监测的滨鸟繁殖成功

IF 0.3 4区生物学

Waterbirds Pub Date : 2023-06-27 DOI: 10.1675/063.045.0310

Mikayla N. Call, A. Wilke, Zak Poulton, R. Boettcher, S. Karpanty, Eunbi Kwon, Aylett Lipford, Emily D. Gardner, Logan Anderson, J. Fraser, D. Catlin, C. Wails

{"title":"Comparing In-Person Versus Camera Monitoring of Shorebird Reproductive Success","authors":"Mikayla N. Call, A. Wilke, Zak Poulton, R. Boettcher, S. Karpanty, Eunbi Kwon, Aylett Lipford, Emily D. Gardner, Logan Anderson, J. Fraser, D. Catlin, C. Wails","doi":"10.1675/063.045.0310","DOIUrl":"https://doi.org/10.1675/063.045.0310","url":null,"abstract":"Abstract. Shorebird reproductive success monitoring often relies on surveys of nest and brood survival. However, conclusions may be inaccurate due to the challenges of gathering and interpreting evidence of nest and brood fate. We tested the efficacy of in-person versus camera-based monitoring to quantify productivity and evaluate threats to reproductive success of American Oystercatchers (Haematopus palliatus) and Piping Plovers (Charadrius melodus) at Metompkin Island, Virginia. We deployed 73 cameras using three set-ups: at nests, at brood sites, and along a transect. The same areas were also surveyed in-person approximately once per week. Camera monitoring confirmed nest fate where in-person monitors could not determine fate from field evidence and provided insight to the effectiveness of mammalian predator removal. However, cameras failed to capture causes of mortality for mobile chicks and did not consistently document chicks where in-person monitoring confirmed successful broods. Cameras produced large quantities of data requiring 63.5–315 hours to review, depending on camera set-up. We found cameras were useful for validating conclusions from in-person monitoring, highlighting threats that surveys missed, and characterizing the predator community. Managers should consider the tradeoff between potential benefits and required effort of camera monitoring when deciding which method would be effective for meeting management goals.","PeriodicalId":54408,"journal":{"name":"Waterbirds","volume":"19 1","pages":"312 - 327"},"PeriodicalIF":0.3,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73984187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Seasonal Occurrence and Daytime Behaviour of Eurasian Spoonbills Platalea leucorodia leucorodia in Senegal's Atlantic Coastal Areas 塞内加尔大西洋沿岸地区欧亚琵鹭的季节发生及日间行为

IF 0.3 4区生物学

Waterbirds Pub Date : 2023-02-08 DOI: 10.1675/063.045.0210

A. Diallo, T. Piersma, Arne O. K. Van Eerden, S. Ndiaye, P. Ndiaye

{"title":"Seasonal Occurrence and Daytime Behaviour of Eurasian Spoonbills Platalea leucorodia leucorodia in Senegal's Atlantic Coastal Areas","authors":"A. Diallo, T. Piersma, Arne O. K. Van Eerden, S. Ndiaye, P. Ndiaye","doi":"10.1675/063.045.0210","DOIUrl":"https://doi.org/10.1675/063.045.0210","url":null,"abstract":"Abstract. Senegal hosts hundreds of wintering Eurasian Spoonbills Platalea leucorodia every year. To contribute to the paucity of knowledge on their distribution and ecology, this study aimed to compare the occurrence and behaviour of spoonbills at the three most important sites in Senegal: Djoudj National Park, Technopôle of Dakar and Palmarin Reserve. Based on monthly counts in 2017 and 2018, Djoudj reached peak numbers of more than 2500 birds in April. The number in Palmarin peaked at 500 birds in October. In both cases this well exceeds the 1% threshold for the East Atlantic Flyway population, but Djoudj can hold up to a sixth of the population. Technopôle is an intermediate site that rarely hosts more than 50 individuals. Based on the scanning of behaviours throughout the day, we show that foraging activity was high early in the morning and decreased towards noon. At Palmarin, Spoonbills spent more time resting (68%) than at Djoudj (50%), allocating less time to foraging (16%) compared with Djoudj (29%). If this indicates favourable wintering habitat at Palmarin, the growing population of Eurasian Spoonbills from Europe may increasingly rely on the Palmarin site during the coming decade.","PeriodicalId":54408,"journal":{"name":"Waterbirds","volume":"22 1","pages":"199 - 205"},"PeriodicalIF":0.3,"publicationDate":"2023-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74916120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Factors Affecting Colony Size and Breeding Parameters of Eared Grebe (Podiceps nigricollis) in Carp Ponds 鲫鱼池中褐穗小䴙䴘种群大小及繁殖参数的影响因素

IF 0.3 4区生物学

Waterbirds Pub Date : 2023-02-08 DOI: 10.1675/063.045.0203

R. Gwiazda, A. Flis, M. Ledwoń, D. Wiehle

{"title":"Factors Affecting Colony Size and Breeding Parameters of Eared Grebe (Podiceps nigricollis) in Carp Ponds","authors":"R. Gwiazda, A. Flis, M. Ledwoń, D. Wiehle","doi":"10.1675/063.045.0203","DOIUrl":"https://doi.org/10.1675/063.045.0203","url":null,"abstract":"Abstract. Understanding important factors for breeding Eared Grebes (Podiceps nigricollis) is essential for its conservation. We aimed to study the impact of some factors on nests and breeding success in this species in fishponds (S Poland). Number of Eared Grebe nests were counted on particular carp ponds. Pond size, vegetation cover, number of nests in colonies of associated gull or tern species, and age of stocked common carp (Cyprinus carpio) were determined for all ponds with nests. We also investigated the relationship between nest size, material used to construct them and clutch size. Number of Eared Grebe nests positively correlated with number of breeding pairs of associated colonial species (terns or gulls). Selection of the breeding site by the Eared Grebe can be explained by appropriate nest protection by large colonies of associated species (Whiskered Tern Chlidonias hybrida and Black-headed Gull Chroicocephalus ridibundus). Nest size was not related to clutch size. A negative relationship between breeding success and number of nests of Eared Grebe was found. Food is a not limiting factor for the Eared Grebe on fishponds with extensive production, and presumably other factors such as weather conditions may explain the low breeding success of this species.","PeriodicalId":54408,"journal":{"name":"Waterbirds","volume":"203 1","pages":"134 - 140"},"PeriodicalIF":0.3,"publicationDate":"2023-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72949470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Editorial: It is Raining Status Reports 社论:正在下雨的状态报告

IF 0.3 4区生物学

Waterbirds Pub Date : 2023-02-08 DOI: 10.1675/063.045.0201

K. S. Gopi Sundar

引用次数: 0

Vocal Activity of Little Bittern (Ixobrychus m. minutus) during the Breeding Season 小麻鸦(Ixobrychus m. minutus)在繁殖季节的发声活动

IF 0.3 4区生物学

Waterbirds Pub Date : 2023-02-08 DOI: 10.1675/063.045.0212

A. Flis

引用次数: 1

Siberian Crane Migration: Individuals Repeat Timing and Route in Spring Migration 西伯利亚鹤的迁徙:春季迁徙中个体重复的时间和路线

IF 0.3 4区生物学

Waterbirds Pub Date : 2023-02-08 DOI: 10.1675/063.045.0202

Xiuming Li, Kaijun Pan, Haixiang Zhou, F. Qian

{"title":"Siberian Crane Migration: Individuals Repeat Timing and Route in Spring Migration","authors":"Xiuming Li, Kaijun Pan, Haixiang Zhou, F. Qian","doi":"10.1675/063.045.0202","DOIUrl":"https://doi.org/10.1675/063.045.0202","url":null,"abstract":"Abstract. Stopover habitats in long-distance migrants such as Siberian Cranes (Leucogeranus leucogeranus) are subject to dynamic changes, both seasonally and spatially. Due to the difficulty in conserving stopover habitats across vast geographies, it is necessary to clarify the timing and route patterns of stopover sites in order to take practical measures to protect habitats. From 2014 to 2018, we successfully tracked n = 10 Siberian Cranes by satellite tracking and obtained data for n = 26 complete migrations. We obtained the annual cycle of cranes and analyzed the repeatability between seasons and individuals. According to tracking data, Siberian Cranes started and ended autumn migration on 23 September and 19 November, respectively. Spring migration started on 8 April and ended on 4 June. The migration routes between seasons showed spatial similarity but less repeatability. There is significant repeatability in migration routes from 48°N to 58°N (Russian areas) between individuals in spring. Our results provide support for some seasonal plasticity in the timing of migration and flexibility in routes taken by migrating Siberian Cranes. Other than rigid patrol and guardianship for the entire spring, we also propose strengthening monitoring and protection in the identified stopover areas from the end of March to the beginning of May each year.","PeriodicalId":54408,"journal":{"name":"Waterbirds","volume":"39 1","pages":"125 - 133"},"PeriodicalIF":0.3,"publicationDate":"2023-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84207536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A Comparison of Direct & Indirect Survey Methods for Estimating Colonial Nesting Waterbird Populations 估算种群筑巢水鸟数量的直接与间接调查方法比较

IF 0.3 4区生物学

Waterbirds Pub Date : 2023-02-08 DOI: 10.1675/063.045.0209

D. Prosser, Jeffery D. Sullivan, Christopher J. Gilbert, D. Brinker, P. C. Mcgowan, Carl R. Callahan, Ben Hutzell, Laurence E. Smith

{"title":"A Comparison of Direct & Indirect Survey Methods for Estimating Colonial Nesting Waterbird Populations","authors":"D. Prosser, Jeffery D. Sullivan, Christopher J. Gilbert, D. Brinker, P. C. Mcgowan, Carl R. Callahan, Ben Hutzell, Laurence E. Smith","doi":"10.1675/063.045.0209","DOIUrl":"https://doi.org/10.1675/063.045.0209","url":null,"abstract":"Abstract. Population estimates derived from monitoring efforts can be sensitive to the survey method selected, potentially leading to biased estimates and low precision relative to true population size. While small unmanned aerial systems (UAS) present a unique opportunity to survey avian populations while limiting disturbance, relatively little is known about how this method compares with more traditional approaches. In this study we compared population estimates of Snowy (Egretta thula) and Cattle Egrets (Bubulcus ibis) in a mixed-species colony in the Chesapeake Bay (Maryland, USA) derived from UAS photo counts, flush counts, flight-line surveys, and in-colony nest counts along with the time required to derive an estimate via each approach. We found that UAS counts and flush counts produced lower pair estimates than nest counts and flight-line surveys (P < 0.05), and required dramatically less time (x̄ = 6, 8, 84 and 90 min, respectively). These results suggest that while UAS have the potential to collect valuable survey data from breeding colonies that are hard to reach or are especially sensitive to the disturbance inherent in other methods, inherent biases should be considered and caution should be used when comparing results between survey types.","PeriodicalId":54408,"journal":{"name":"Waterbirds","volume":"40 1","pages":"189 - 198"},"PeriodicalIF":0.3,"publicationDate":"2023-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86668626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Partial Migration by Great Egrets Ardea alba in Coastal California 大白鹭在加利福尼亚海岸的部分迁移

IF 0.3 4区生物学

Waterbirds Pub Date : 2023-02-08 DOI: 10.1675/063.045.0205

David C. Lumpkin, S. Jennings, Nils Warnock, T. E. Condeso

引用次数: 1

Natural West Nile Virus Infections in Captive Raised American White Pelicans (Pelecanus erythrorhynchos). 圈养美洲白鹈鹕自然感染西尼罗病毒。

IF 0.3 4区生物学

Waterbirds Pub Date : 2023-02-08 DOI: 10.1675/063.045.0211

Treena L. Ferguson, D. King, B. Rude, W. Baumgartner, C. Huston, B. Strickland, F. Cunningham

引用次数: 1