Ornis Svecica最新文献_第8页

Waterbird dynamics at the shallow Lake Krankesjön, southern Sweden: a long-term study 瑞典南部Krankesjön浅湖的水鸟动态:一项长期研究

Ornis Svecica Pub Date : 2009-04-01 DOI: 10.34080/os.v19.22653

H. Källander, L. Hansson, C. Brönmark, Alice Nicolle

引用次数: 0

First, second and replacement broods in the breeding biology of a Treecreeper Certhia familiaris population 家蚕种群繁殖生物学的第一、第二和替代巢

Ornis Svecica Pub Date : 2009-04-01 DOI: 10.34080/os.v19.23118

A. Enemar

{"title":"First, second and replacement broods in the breeding biology of a Treecreeper Certhia familiaris population","authors":"A. Enemar","doi":"10.34080/os.v19.23118","DOIUrl":"https://doi.org/10.34080/os.v19.23118","url":null,"abstract":"The breeding behaviour of a Treecreeper population that bred in nest pockets and in which all females were colour-ringed was followed over ten seasons. On average, 50% of the first breeding attempts in spring failed. Between half and two thirds of the successful females were double-brooded. The remaining females were single- brooded. These two breeding categories were identical in terms of initial clutch size and egg volume. The double-brooded females invested less in their second than their first clutch. Most of the females that failed laid replacement clutches of similar size as in the first attempt but with larger eggs. A replacement brood where young successfully fledged was never followed by a second breeding attempt. The average distance between the first and the repeat nest was the same for double-brooded and replacement-breeding females. The egg volumes of the first and the repeat clutches were strongly correlated. The double-brooded pairs were the most common breeding category and reared 50% of the population’s total output of fledged broods, while the single-brooded and replacement breeding pairs each fledged ca. 25%. The adaptive values of the three breeding categories are compared.","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69761321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Differences in foraging ecology of Wood Sandpiper Tringa glareola and Ruff Philomachus pugnax during spring migration in Sajna River valley (nor thern Poland) 萨伊纳河流域(非波兰北部)木矶鹬和木矶鹬春季迁徙觅食生态的差异

Ornis Svecica Pub Date : 2009-04-01 DOI: 10.34080/os.v19.22655

Małgorzata Krupa, M. Ściborski, R. Krupa, Rafał Popis, Justyna Wołoszyn

引用次数: 0

Tofsvipa Vanellus vanellus häckande på kalhygge Vanellus Vanellus在秃顶上筑巢

Ornis Svecica Pub Date : 2009-01-01 DOI: 10.34080/os.v19.22656

Daniel Lundberg

引用次数: 0

Territoriality in the Willow Warbler Phylloscopus trochilus in its winter quarter in Lesotho 莱索托冬栖柳莺的领地性

Ornis Svecica Pub Date : 2009-01-01 DOI: 10.34080/os.v19.22658

G. Kopij

引用次数: 2

Brood size of twelve farmland bird species in Sweden during 1962—2001 1962-2001年瑞典12种农田鸟类的育雏数量

Ornis Svecica Pub Date : 2009-01-01 DOI: 10.34080/os.v19.22665

H. Ryttman, K. S. S. Hall‐Karlsson

引用次数: 0

Breeding Skylarks Alauda arvensis on organic set-asides—effects of time of cutting, vegetation structure and landscape composition 采伐时间、植被结构和景观组成对云雀有机搁置的影响

Ornis Svecica Pub Date : 2009-01-01 DOI: 10.34080/os.v19.22666

Åke Berg, Olle Kvarnbäck, Å. Gustafsson

{"title":"Breeding Skylarks Alauda arvensis on organic set-asides—effects of time of cutting, vegetation structure and landscape composition","authors":"Åke Berg, Olle Kvarnbäck, Å. Gustafsson","doi":"10.34080/os.v19.22666","DOIUrl":"https://doi.org/10.34080/os.v19.22666","url":null,"abstract":"We assessed the quality of organic set-asides as habitat for breeding Skylarks. We evaluated (i) density in relation to vegetation structure and landscape composition, (ii) reproductive success on set-asides cut at normal time (1 June) and with delayed cutting (15 June), and (iii) nest predation and destruction by using artificial nests. Skylark density was negatively associated with vegetation height and cover, and it was three times higher on fields without forest than with more than 50% forest in the surrounding landscape. Of the artificial nests, 56% were destroyed by cutting that also increased predation on surviving nests. Delayed cutting resulted in higher reproductive success; mean number of fledged broods per territory increased from 0.42 to 0.52. The negative effects of early cutting seemed to be largest on fields with sparse vegetation. Based on fledging dates we suggest that 20 June is a reasonable date for first cutting in south-central Sweden. Reproductive success on organic set-asides could probably be further improved if less dense vegetation (or unsown patches or strips) is combined with a delayed cutting.","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69761278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The ﬁrst record of melanism in the Red-backed Shrike Lanius collurio 红背伯劳鸟黑化的第一个记录

Ornis Svecica Pub Date : 2009-01-01 DOI: 10.34080/os.v19.22657

M. Ciach

引用次数: 1

Occurrence of Continental Blackcaps Sylvia atricapilla in northern Europe 欧洲北部大陆黑头蛱蝶的出现

Ornis Svecica Pub Date : 2009-01-01 DOI: 10.34080/os.v19.22660

Ornis Svecica, Daniel Bengtsson, T. Fransson, J. E. Røer

引用次数: 7

Long handling time of a big prey—Great Reed Warbler Acrocephalus arundinaceus foraging on frog 长时间处理大型猎物——大苇莺Acrocephalus arundinaceus觅食青蛙

Ornis Svecica Pub Date : 2009-01-01 DOI: 10.34080/os.v19.22661

D. Jakubas, K. Wojczulanis-Jakubas

引用次数: 0