Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | Springer Nature Link |
|---|---|
| Author | Sapir, Nir Horvitz, Nir Wikelski, Martin Avissar, Roni Nathan, Ran |
| Copyright Year | 2014 |
| Abstract | Billions of seasonally migrating birds and insects use two principal modes of flight, i.e., flapping and soaring–gliding. Flight mode is known to have strong effects on energy expenditure and speed of migration, yet its influence on the migratory track has rarely been investigated. Using radio telemetry, we studied the effects of crosswind on European Bee-eaters (Merops apiaster) during their spring migration with respect to different flight modes. Flapping, soaring–gliding, and mixed flight in which the birds flapped during gliding were distinguished by radio signals while the birds were flying en route over southern Israel. The regional atmospheric modeling system was applied in high spatial (1 km × 1 km) and temporal (5 min) resolution to estimate winds encountered aloft. We analyzed data from 11 birds that flew over a total distance of 810 km and found that lateral drift due to side wind did not differ among birds engaged in different flight modes. Overall, there was almost no effect of crosswind speed on bird lateral speed, as the regression slope was 0.31 (indicting mild lateral drift) and the regression’s R 2 was 0.01. Therefore, we conclude that migrating bee-eaters compensated for crosswind during their spring migration and that this response was not dependent on bird flight mode. Ziehende Bienenfresser kompensieren die durch Seitenwinde verursachte seitliche Abdrift Milliarden saisonal migrierender Vögel und Insekten benutzen zwei unterschiedliche Flugtechniken, den Ruderflug und den Segel- und Gleitflug. Es ist bekannt, dass die Flugtechnik die Energiekosten und die Geschwindigkeit der Zuges stark beeinflusst. Der Einfluss der Flugtechnik auf die Migrationsroute wurde bisher jedoch kaum untersucht. Mittels Radiotelemetrie haben wir den Einfluss von Seitenwinden auf den Frühjahrszug von Bienenfressern (Merops apiaster) untersucht. Während die Vögel über Südisrael flogen, konnten Ruderflug, Segel- und Gleitflug und Flügelschlag während des Gleitfluges aufgrund der Funksignale unterschieden werden. Das Regional Atmospheric Modeling System wurde mit einer hohen räumlichen (250 m × 250 m) und zeitlichen (5 Minuten) Auflösung angewandt um die auftretenden Winde zu berechnen. Die Daten von elf Vögeln, die eine Gesamtstrecke von 810 km geflogen sind, wurden von uns analysiert. Die seitliche Abdrift durch Seitenwinde unterschied sich nicht zwischen den unterschiedlichen Flugtechniken. Es gab insgesamt fast keinen Effekt der Geschwindigkeit der Seitenwinde auf die Geschwindigkeit der seitlichen Abdrift der Vögel. Die Steigung der Regressionsgerade war 0,31 (was nur geringe seitliche Abdrift anzeigt) und R 2 der Regression war 0,01. Daraus schließen wir, dass die migrierenden Bienenfresser während ihres Frühjahrszugs Seitenwinde kompensiert haben und dass die Flugtechnik keinen Einfluss auf diese Kompensation hatte. |
| Starting Page | 745 |
| Ending Page | 753 |
| Page Count | 9 |
| File Format | |
| ISSN | 21937192 |
| Journal | Journal für Ornithologie |
| Volume Number | 155 |
| Issue Number | 3 |
| e-ISSN | 21937206 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2014-03-25 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | Subscribed |
| Subject Keyword | Atmospheric modeling Biotelemetry Bird migration Flight mode Merops apiaster Wind drift Zoology Animal Ecology Evolutionary Biology |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|