Ardea最新文献_第8页

Sailing Down-Wind, a Breakwaters' Perspective on the Great Cormorant 顺风航行，从防波堤的角度看大冰碛

IF 0.4 4区生物学

Ardea Pub Date : 2022-07-01 DOI: 10.5253/arde.v109i2.a1

{"title":"Sailing Down-Wind, a Breakwaters' Perspective on the Great Cormorant","authors":"","doi":"10.5253/arde.v109i2.a1","DOIUrl":"https://doi.org/10.5253/arde.v109i2.a1","url":null,"abstract":"bution, numbers and foraging activities, this special issue of Ardea highlights some of the latest research findings, but also reflects on the ongoing debate about how we need to see the perceived conflict with fisheries and angling interests that has kept us busy for so long. By bringing together this diverse collection of papers from all over Europe and Israel we are convinced that this will not only lead to a better understanding of the species but will also be of help in addressing the questions around this conflict that still remain. The species is fascinating in its flexibility to respond to changes in environmental conditions. It is perhaps that flexibility, that ever-existing power of Cormorants to find a way out when conditions change, that has attracted the attention of researchers for so many years and, at the same time, has made the birds so thoroughly hated by many who have vested interests in fisheries. Interest ingly, during the same period the Double-crested Cormorant Phalacrocorax auritus has raised the same questions in the United States and Canada and has been subject to rigorous control measures (e.g. Wires 2014). Rather than demonising Cormorants for their predation on fishes, perhaps we can learn a lot from their way of fishing, from the way that they, unlike many human users in the same habitats, have never been shown to over-exploit healthy, natural systems.","PeriodicalId":55463,"journal":{"name":"Ardea","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49385882","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

Diet of Great Cormorants Phalacrocorax carbo in Relation to Fish Resources in the Upper Adriatic Sea 亚得里亚海上游大鸬鹚饮食与鱼类资源的关系

IF 0.4 4区生物学

Ardea Pub Date : 2022-07-01 DOI: 10.5253/arde.v109i2.a18

M. Cosolo, N. Privileggi, S. Sponza

{"title":"Diet of Great Cormorants Phalacrocorax carbo in Relation to Fish Resources in the Upper Adriatic Sea","authors":"M. Cosolo, N. Privileggi, S. Sponza","doi":"10.5253/arde.v109i2.a18","DOIUrl":"https://doi.org/10.5253/arde.v109i2.a18","url":null,"abstract":"The necessity of balancing conservation issues with the protection of aquaculture activities drives research to quantify the impact of the Great Cormorant Phalacrocorax carbo and to identify the best mitigation strategies. This study aims to characterise the diet in relation to the possible impact of the Great Cormorant on the extensive aquaculture farms in Friuli Venezia Giulia region in the upper Adriatic Sea. The diet of the species was investigated by analysing 459 pellets, collected monthly during the winter 2006/2007 in the three most important roosts of the Friuli Venezia Giulia coastline. Cormorants proved to feed mainly on typical fish species of lagoon and coastal waters. By frequency, Sand Smelts Atherina boyeri (54%) and Flounders Platichthys flesus (26%) were the main prey. Flounders played an important role also in terms of biomass (35%), together with mullets (Mugilidae, 28%). Commercially-important aquaculture species (European Seabass Dicentrarchus labrax and Gilthead Bream Sparus aurata) represented only 2% and 14% by frequency and biomass. The diet analysis supports our previous studies, carried out by behavioural observations on Cormorants foraging at different depths, on interactions with the main prey and strategies of exploitation of the fish farms. Our data imply that the Great Cormorant does not have a large effect on aquaculture yield in the north Adriatic Sea.","PeriodicalId":55463,"journal":{"name":"Ardea","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45816222","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

The Diet of Two Sympatric Great Cormorant Phalacrocorax carbo Subspecies Wintering at Freshwater Fishery Sites in England and Wales 在英格兰和威尔士淡水渔场越冬的两个同域大鸬鹚长喙亚种的饮食

IF 0.4 4区生物学

Ardea Pub Date : 2022-07-01 DOI: 10.5253/arde.v109i2.a15

I. Russell, A. Cook, M. Ives, P. I. Davison

{"title":"The Diet of Two Sympatric Great Cormorant Phalacrocorax carbo Subspecies Wintering at Freshwater Fishery Sites in England and Wales","authors":"I. Russell, A. Cook, M. Ives, P. I. Davison","doi":"10.5253/arde.v109i2.a15","DOIUrl":"https://doi.org/10.5253/arde.v109i2.a15","url":null,"abstract":"The recent increase in Cormorant numbers in the UK and the increasing use of inland feeding sites by the birds have created conflicts at many freshwater fisheries. Information on the prey composition of Cormorants foraging at such sites is important in understanding these conflicts and in providing a sound basis for management. Two subspecies of Great Cormorant, the continental subspecies Phalacrocorax carbo sinensis and the Atlantic subspecies Phalacrocorax carbo carbo occur in the UK and forage sympatrically. This study presents information on the winter diet of over 1400 Cormorants shot at inland fishery sites over an eleven-year period. A wide range of prey species were identified, but five fish species compromised almost 80% of the prey items recorded by number, and most prey items were small (≤10 cm). Dietary differences, in terms of the species, sizes and number of fish consumed, were apparent between birds of different sex and subspecies, consistent with the differing sizes of the birds. The largest birds (male P. c. carbo) tended to consume fewer, larger fish and the smallest birds (female P. c. sinensis) more, smaller items. Bird size also appears to influence foraging site selection, with male P. c. carbo more likely to forage on fisheries, such as put-and-take trout fisheries, where larger prey items were available.","PeriodicalId":55463,"journal":{"name":"Ardea","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44434685","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: 3

Reducing Fish Losses to Great Cormorants Using Artificial Fish Refuges: Refining Refuge Deployment Strategies 使用人工鱼类避难所减少大鸬鹚的鱼类损失:改进避难所部署策略

IF 0.4 4区生物学

Ardea Pub Date : 2022-07-01 DOI: 10.5253/arde.v109i2.a29

I. Russell, D. Parrott, M. Ives, P. I. Davison, S. Fox, D. Clifton-Dey

{"title":"Reducing Fish Losses to Great Cormorants Using Artificial Fish Refuges: Refining Refuge Deployment Strategies","authors":"I. Russell, D. Parrott, M. Ives, P. I. Davison, S. Fox, D. Clifton-Dey","doi":"10.5253/arde.v109i2.a29","DOIUrl":"https://doi.org/10.5253/arde.v109i2.a29","url":null,"abstract":"A series of paired-pond trials were completed during the winters of 2005 to 2008 to examine the effect of introducing artificial fish refuges on Great Cormorant Phalacrocorax carbo foraging behaviour, prey capture rates and fish losses in trial ponds, and to help refine their potential use as a tool in addressing cormorant-fisheries conflicts. Investigations comparing refuge volumes within a year provided clear evidence that larger refuges offered fish better protection than smaller ones. When compared across years, there was no clear relationship between refuge volume and prey consumption rate by Cormorants. There was, however, a very large difference in the consumption rate when ponds with no refuge were compared with any of the refuge volumes tested, suggesting that, in the absence of any other cover, the addition of even very small fish refuges can markedly reduce the quantity of fish eaten by Cormorants. Further trials indicated that introducing refuges as a single larger structure was more effective at reducing fish losses than an equivalent volume of refuge arranged as a number of smaller, widely-spaced, discrete units (>50% reduction in prey consumed per Cormorant visit). Trials further confirmed that the beneficial effects of fish refuges were not compromised by the presence of marginal habitat; indeed, prey consumption rates were >30% lower in the pond with additional simulated reed beds. The impact of refuge presence on fish loss rates varied between species, with Roach Rutilus rutilus benefitting in particular. The results are discussed in the wider context of interactions between Cormorants and their prey and with regard to the potential use of fish refuges as a management tool.","PeriodicalId":55463,"journal":{"name":"Ardea","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44464333","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

The Recent Range Expansion of Great Cormorants Phalacrocorax carbo in Hokkaido, Japan 日本北海道大鸬鹚活动范围的近期扩张

IF 0.4 4区生物学

Ardea Pub Date : 2022-07-01 DOI: 10.5253/arde.v109i2.a11

Theodore E. Squires, D. Aoki, O. Hasegawa

引用次数: 2

GPS-Tracking of Great Cormorants Phalacrocorax carbo sinensis Reveals Sex-Specific Differences in Foraging Behaviour 大鸬鹚的gps追踪揭示了觅食行为的性别差异

IF 0.4 4区生物学

Ardea Pub Date : 2022-07-01 DOI: 10.5253/arde.v109i2.a19

R. Fijn, Job W. de Jong, J. Adema, P. V. van Horssen, M. Poot, Stef van Rijn, Mennobart R. van Eerden, T. Boudewijn

{"title":"GPS-Tracking of Great Cormorants Phalacrocorax carbo sinensis Reveals Sex-Specific Differences in Foraging Behaviour","authors":"R. Fijn, Job W. de Jong, J. Adema, P. V. van Horssen, M. Poot, Stef van Rijn, Mennobart R. van Eerden, T. Boudewijn","doi":"10.5253/arde.v109i2.a19","DOIUrl":"https://doi.org/10.5253/arde.v109i2.a19","url":null,"abstract":"Great Cormorants Phalacrocorax carbo sinensis are considered generalist predators feeding in a variety of marine and freshwater habitats on many different prey species. Recently however, there is increasing evidence that even seemingly generalist species can often be regarded as a diverse group of individual specialists sometimes induced by sex-specific foraging behaviour. To test whether this also holds true for Great Cormorants, the present study characterised the at-sea distribution and examined the time budgets of provisioning Great Cormorants by deploying GPS-loggers on 11 nesting males and females during the breeding season of 2012. Additionally, pellets were collected from underneath the nests of these tagged birds for detailed diet analysis, based on the otoliths and fish bones recorded within them. Diverse foraging patterns were recorded, ranging from exclusively freshwater feeding, to offshore foraging, with the furthest recorded distance from the colony being 28 km at sea. Time budgets during foraging trips revealed relatively long periods of resting ashore (55% of the trip ± 23%), followed by foraging (31 ± 18%), and time spent in flight (15 ± 11%). Flatfishes dominated in the diets of these Great Cormorants, indicating benthic-foraging strategies when foraging in saltwater (feeding on discards could be ruled out). The males in this study avoided freshwater foraging habitat and preferred offshore waters with a sandy bottom or nearshore waters alongside rocky breakwaters and within harbours. Females foraged in all habitat types, but proportionally more in inland freshwater bodies. Females spent more time on foraging than did males, particularly in marine habitats, whilst males rested more. It is proposed that these differences might have been caused by sex-specific foraging strategies, possibly resulting from competition at foraging sites.","PeriodicalId":55463,"journal":{"name":"Ardea","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41271747","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: 2

Long-Term Trends in Laying date and Fledged Young of Barn Swallow Hirundo rustica in Two Regions of the Netherlands 荷兰两个地区仓燕Hirundo rustica产卵期和幼龄的长期趋势

IF 0.4 4区生物学

Ardea Pub Date : 2022-05-23 DOI: 10.5253/arde.2022.a3

J. Altenburg, B. van den Brink, T. Boudewijn, J. Drop, J. van Muiswinkel, P. V. van Horssen

{"title":"Long-Term Trends in Laying date and Fledged Young of Barn Swallow Hirundo rustica in Two Regions of the Netherlands","authors":"J. Altenburg, B. van den Brink, T. Boudewijn, J. Drop, J. van Muiswinkel, P. V. van Horssen","doi":"10.5253/arde.2022.a3","DOIUrl":"https://doi.org/10.5253/arde.2022.a3","url":null,"abstract":"Since 1992, Dutch volunteers have monitored the breeding attempts of Barn Swallows on a systematic basis. For two regions – Noord-Veluwe and Twente – a dataset of 27 years (1992–2018) was available. This paper examines the timing of breeding and the number of fledglings per successful breeding attempt. As spring and summer weather in Western Europe became on average warmer during this period, we analysed whether Barn Swallows adapted to this shift. The laying date of first broods advanced on average 2.3 days per ten years. The average advancement of laying date of second broods was 2.9 days per decade. The average number of fledglings per successful breeding attempt was constant over time, but showed large inter-year-variation. First broods consistently produced 0.6 fledglings more than second broods. These results are in line with results from similar studies in Western Europe. Contrary to our expectations, neither large scale nor local weather parameters were found to explain the advancement of laying and the number of fledged young. It is essential to study key species like Barn Swallows during all stages of their life cycle over a long time span and large spatial scale to be able to unravel potential effects of climate change. Our study demonstrates that volunteers can contribute essential demographic data. Ideally, these demographic parameters would be monitored with individually marked (colour-ringed) birds. Frequent quality checks and feedback to volunteers are key to maximize the quality of the data collected through long-term volunteer surveys.","PeriodicalId":55463,"journal":{"name":"Ardea","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48813969","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

A Mixed Brood of Coal Tits Periparus ater and Blue Tits Cyanistes caeruleus in Central Portugal 葡萄牙中部的一种煤山雀和蓝山雀的混合巢

IF 0.4 4区生物学

Ardea Pub Date : 2022-05-23 DOI: 10.5253/arde.2022.a4

Jorge Garrido-Bautista, Carolina Santos-Baena, J. Ramos, G. Moreno-Rueda, A. Norte

引用次数: 0

Seed Dispersal by an Invasive Exotic Bird in Europe 一种外来入侵鸟类在欧洲的种子传播

IF 0.4 4区生物学

Ardea Pub Date : 2022-05-23 DOI: 10.5253/arde.v110.2022.a1

P. Pereira, C. Godinho, C. Lopes, Rui Lourenço

{"title":"Seed Dispersal by an Invasive Exotic Bird in Europe","authors":"P. Pereira, C. Godinho, C. Lopes, Rui Lourenço","doi":"10.5253/arde.v110.2022.a1","DOIUrl":"https://doi.org/10.5253/arde.v110.2022.a1","url":null,"abstract":"Native birds play a critical role in seed dispersal. The introduction of a new species may result in unpredictable effects on an ecosystem, namely in terms of seed dispersal. The Red-billed Leiothrix Leiothrix lutea is a frugivorous species native to Asia, whose potential role as seed disperser has not yet been analysed in its introduced range in Europe. We compared the role of Leiothrix with that of Eurasian Blackcap Sylvia atricapilla and European Robin Erithacus rubecula, which are among the native species with seed dispersal roles in Europe. We compared seed expelling behaviour among species (defecation or regurgitation of seeds), which can potentially shape seed dispersal, depending on whether the seeds germinate following expulsion. Field work was conducted in Central Portugal between November 2014 and January 2015 and included bird captures to collect faecal samples, followed by faecal analysis to check for the presence of seeds. We also surveyed plant species abundance and fruit availability in the study site. The feeding and seed defecation behaviour of Leiothrix closely matched that of Robins, as most individuals of both species consumed fruits without ingesting seeds and their faeces mainly contained plant material and few seeds. On the contrary, more than half of Blackcap faeces contained seeds. All three species ate similar plant species. Although Leiothrix faeces indicate that this species primarily eats fruits without ingesting seeds; a small fraction of faeces samples (c. 13%) contained seeds. Our results suggest that Leiothrix has low potential to be a seed disperser in Central Portugal and probably elsewhere.","PeriodicalId":55463,"journal":{"name":"Ardea","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45290168","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

Climate Effects on Breeding Phenology of Peregrine and Lanner Falcons in the Mediterranean 气候对地中海游隼和兰纳隼繁殖物候的影响

IF 0.4 4区生物学

Ardea Pub Date : 2022-05-23 DOI: 10.5253/arde.2022.a2

M. Sarà, R. Mascara, A. Nardo, L. Zanca

{"title":"Climate Effects on Breeding Phenology of Peregrine and Lanner Falcons in the Mediterranean","authors":"M. Sarà, R. Mascara, A. Nardo, L. Zanca","doi":"10.5253/arde.2022.a2","DOIUrl":"https://doi.org/10.5253/arde.2022.a2","url":null,"abstract":"We explored the effects of weather on the timing and reproduction of the Mediterranean Peregrine Falcon Falco peregrinus brookei and the Lanner Falcon F. biarmicus feldeggii living on the Mediterranean island of Sicily. We found that the start date of incubation has changed during 1979–2019 and analysed whether incubation timing affected the productivity of both populations and whether the change of incubation date and the quality of breeding sites depended on climatic conditions. Overall spring temperature and rainfall increased on Sicily and the incubation date of the Peregrine and the Lanner Falcon has shifted to be about one week later over the time period 1979 to 2019. Linear mixed modelling showed the influence of winter conditions and random effects (climate sector of island, year of study) on incubation date in both species. The increase in February rainfall has delayed incubation in the Peregrine Falcon, while we could not identify a specific monthly effect delaying incubation in the Lanner Falcon. In both species, the shift in incubation date has resulted in a decrease in productivity (number of fledglings). Weather conditions in late spring predicted the quality of the breeding site of Lanner Falcons but not of Peregrines. The breeding phenology of both falcons shows a common response to weather conditions on Sicily, however the Lanner Falcon seems more sensitive than the Peregrine to the changing climate. Climate effects add to other anthropogenic impacts negatively affecting the future survival of this insular population, which is the largest in Europe.","PeriodicalId":55463,"journal":{"name":"Ardea","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43724996","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