Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Foraging behaviour of common murres in the Baltic Sea, recorded by simultaneous attachment of GPS and time-depth recorder devices
Stockholm University, Faculty of Science, Stockholm Resilience Centre.
Stockholm University, Faculty of Science, Stockholm Resilience Centre.
2013 (English)In: Marine Ecology Progress Series, ISSN 0171-8630, E-ISSN 1616-1599, Vol. 475, 277-+ p.Article in journal (Refereed) Published
Abstract [en]

Global positioning system and time-depth recorders were deployed in combination to investigate the foraging behaviour of common murres Uria aalge breeding at Stora Karlso Island, Baltic Sea, during the chick-rearing period. In the pre-breeding period the main prey species of murres, sprat Sprattus sprattus, is targeted by commercial fisheries, likely reducing prey availability during the breeding season. Foraging trips typically consisted of a short flight followed by a period sitting on the sea surface (0.39 +/- 0.48 h), followed by several (5.3 +/- 3.8) diving bouts interspersed by flights and water surface activity. Following the final diving bout, murres returned directly to the colony. Overnight foraging trips lasted longer than daytime trips, and that result corresponded with greater diving activity and reduced dive depths around dawn and dusk, likely times of high prey accessibility. High outward flight groundspeeds (20.0 +/- 2.8 m s(-1)) were aided by tailwinds, and lower inward flight groundspeeds (15.1 +/- 2.5 m s(-1)) were impeded by headwinds. Flights following the wind direction may reflect a strategy to reduce crosswind drift. Foraging intensity was lower than reported by most other studies of murres, suggesting more abundant or aggregated prey.

Place, publisher, year, edition, pages
2013. Vol. 475, 277-+ p.
Keyword [en]
Foraging behaviour, Diving behaviour, Uria aalge, Common murre, Wildlife telemetry, Data loggers, Baltic Sea
National Category
Oceanography, Hydrology, Water Resources Biological Sciences
Research subject
Natural Resources Management
Identifiers
URN: urn:nbn:se:su:diva-88754DOI: 10.3354/meps10125ISI: 000314935000021OAI: oai:DiVA.org:su-88754DiVA: diva2:613080
Funder
Swedish Research Council, 621-2007-5930Swedish Research Council, 621-2010-5584Swedish Research Council, 349-2007-8690Formas
Note

AuthorCount:4;

Available from: 2013-03-26 Created: 2013-03-26 Last updated: 2017-12-06Bibliographically approved
In thesis
1. Seabirds as food for thought: An integrative study on seabird ecology and ecosystem services in changing marine systems
Open this publication in new window or tab >>Seabirds as food for thought: An integrative study on seabird ecology and ecosystem services in changing marine systems
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The importance of the benefits that humans obtain from the oceans is increasingly recognized, along with the rapid decline in marine resources that threatens these benefits. Studying seabirds – top predators in marine ecosystems, can provide insights about multiple pressures and the state of the oceans. The thesis links studies of seabirds through the lens of ecosystem services with an ecological case study. Paper I reviews ecosystem services, finding that seabirds contribute to provisioning, regulating, supporting and cultural services. Seabirds serve as mobile links in marine and terrestrial ecosystems, through regulating and supporting services. Further, scientific knowledge and indicators based on seabirds can be seen as an ecosystem service as they facilitate management. Papers II-IV proceed to build such knowledge about the importance of food quality and quantity for breeding seabirds, in particular common murres Uria aalge in the Baltic Sea. Here, there is a negative relationship between quantity (sprat Sprattus sprattus abundance) and quality (sprat weight-at-age). Quality, but not quantity, was positively related to common murre fledging success while parental foraging trips had shorter duration when quantity was higher, but showed no relationship with food quality (paper II). Paper III describes foraging behaviour of adults and found indications of good foraging conditions at sea. Parents made efforts to adjust provisioning of food according to the needs of the chicks (paper IV), but the adjustments did not seem to be enough to counteract the impact of lower food quality. Paper V explores ecosystem services obtained from seabirds over time identifying a shift from provisioning to cultural services, where current cultural services are often connected. The integration of ecosystem services with seabird ecology shows that seabirds are illustrative of changes in marine resources and provide ways to help people reconnect with the health of marine systems.

Place, publisher, year, edition, pages
Stockholm: Stockholm Resilience Centre, Stockholm University, 2014. 44 p.
Keyword
seabirds, ecosystem services, social-ecological systems, marine systems, fisheries, foraging ecology, provisioning behaviour, common murre, common guillemot, Uria aalge, Stora Karlsö, Baltic Sea
National Category
Ecology Environmental Sciences
Research subject
Natural Resources Management
Identifiers
urn:nbn:se:su:diva-108420 (URN)978-91-7649-035-8 (ISBN)
Public defence
2014-11-28, Nordenskiöldsalen, Geovetenskapens hus, Svante Arrhenius väg 12, Stockholm, 13:00 (English)
Opponent
Supervisors
Note

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 1: Manuscript. Paper 4: Submitted. Paper 5: Manuscript.

 

Available from: 2014-11-06 Created: 2014-10-23 Last updated: 2017-03-03Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Kadin, MartinaOlsson, Olof
By organisation
Stockholm Resilience Centre
In the same journal
Marine Ecology Progress Series
Oceanography, Hydrology, Water ResourcesBiological Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 98 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf