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Research interests
I am an ornithologist with strong interests in evolutionary and behavioural ecology. In my present work, I am exploring the evolution and implications of patterns of dispersal and parental care strategies, and how human-induced habitat changes interact with avian life histories to influence productivity and population dynamics. I am particularly interested in predator-induced parental care strategies including choice of nest sites, provisioning efforts and reproductive investments. These aspects of avian life history have strong implication for the conservation of biodiversity.
Siberian jay Perisoreus infaustus Reine Jonsson©
Population change of woodland and farmland birds
My current research concentrates on the effects of spatial variation in agricultural intensity on farmland bird communities among 10 European countries including Sweden. My work is part of the AGRIPOPES (AGRIcultural Policy induced landsCaPe changes: effects on biodiversity and Ecosystem Services) project initiated to investigate the effects of agricultural intensification on biodiversity and on the prevalence of bio-control of insects on crops.
In addition I continue to conduct my own research project in cooperation with research groups at Uppsala University (Prof Jan Ekman), Turku University (Prof Errki Korpimäki), SkogForsk (Olof Widenfalk) and the Royal Institute of Technology in Stockholm (Mikael Gontier, Ulla Mörtberg) on the effects of human-induced changes in forest structure on prey-predator interactions in the Willow- Parus montanus and crested tit Parus cristatus. The aim of this project is to identify key factors that could explain species-specific differences in population changes between these two forest dwelling species currently observed in Sweden.
Hen Harrier Circus cyaneus Jan-Eric Hägerroth©
Skylark Alauda avensis Jan-Eric Hägerroth©
Volunteer & Farmer Alliance (Sweden)
I am currently responsible for conducting The Swedish Volunteer & Farmer Alliance project in collaboration with the Swedish Ornithological Society (SOF), the Rural Economy and Agricultural Societies (HS) and the Swedish University of Agricultural Sciences (SLU). Following detailed discussion with the Royal Society for the Protection of Birds (RSPB), the equivalent of The Volunteer & Farmer Alliance (V&FA) in the UK has successfully been exported to Sweden in 2006. The aim of this project is to develop new schemes that help to reverse the decline of farmland bird populations by working together with bird watchers and farmers. However, the two projects will differ; in contrast to the UK our aim in Sweden is to monitor the farms over several years to study the effects of conservation measures on farmland birds, involving approximately 40 new farms each year.
Redpols Carduelis flammea Jan-Eric Hägerroth©
Publications
Scientific publications
14. Nystrand, M., Griesser, M., Eggers, S. & Ekman, J. (2009) Habitat-specific demography and source–sink dynamics in a population of Siberian jays (p )
Published Online: Oct 19 2009 6:23AM DOI: 10.1111/j.1365-2656.2009.01627.x
13. Low, M., Arlt, D., Eggers, S. & Pärt, T. (2009). Habitat-specific differences in adult survival rates and its links to parental workload and on-nest predation. Journal of Animal Ecology. DOI: 10.1111/j.1365-2656.2009.01595.x
12. Eggers, S., Griesser, M. and Ekamn, J. (2008) Predator-induced reductions in nest vistation rates are modified by forest cover and food availability. Behavioral Ecology 2008 19(5):1056-1062
11. Low, M., Eggers, S., Arlt, D. & Pärt, T. 2008. Daily patterns of nest visits are correlated with ambient temperature in the Northern Wheatear. Journal of Ornithology. 149: 515-519.
10. Griesser, M., Nystrand, M., Eggers, S.; Ekman, J. (2007). Social constraints limit dispersal and settlement decisions in a group-living bird species. Behavioral Ecology, 19(2):317-324.
9. Griesser M, Nystrand M, Eggers S, Ekman J. (2007). Impact of forestry practices on fitness correlates and population productivity in an open-nesting bird species. Conservation Biology 21, 767-774.
8. Eggers, S., Griesser, M.; Nystrand, M. and Ekman, J. (2006): Predation risk induces changes in nest-site selection and clutch size in Siberian jays. Proc. R. Soc. B, 273, 701-706.
7. Eggers, S., Griesser, M., Andersson, T. and Ekman, J. (2005): Nest predation and habitat change interact to influence Siberian jay numbers. Oikos, 111, 150-158.
6. Eggers, S., Griesser, M. and Ekman, J. (2005): Predator-induced plasticity in nest visitation rates in the Siberian jay. Behavioral Ecology, 16, 30-315.
5. Eggers, S. (2002) Behaviour and life-history responses to chick provisioning under risk of nest predation. Compreshensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 773, 37 pp, Uppsala. (pdf)
4. Ekman, J., Eggers, S. and Griesser, M. (2002): Fighting for to stay; the role of sibling rivalry for delayed dispersal. Animal Behaviour, 64, 453-459.
3. Ekman, J., Baglione, V., Eggers, S. and Griesser, M. (2001): Delayed dispersal: living under the reign of nepotistic parents. Auk, 118, 1-10.
2. Ekman, J., Eggers S., Griesser, M. and Tegelström, H. (2001): Queuing for preferred territories: delayed dispersal of Siberian jays. Journal of Animal Ecology, 70, 217-324.
1. Eggers, S. (2000): Compensatory frugivory in migratory Sylvia warblers: geographical responses to season length. Journal of Avian Biology, 31, 63-74.
Reports, popular science and press releases
9. Eggers, S. & Engström, H. (2007) Bönder och fågelskådare – samarbete för mångfald. Vår Fågelvärld 3, 14-17.
8. Griesser M, Nystrand M, Eggers S, Ekman J. (2007). Skogsgallring – dödlig skötselåtgärd för vissa fågelarter (Thinning, a deadly forestry measure for some bird species). Debate article. Västerviks Tidning April 2007, Norra Västerbotten April 2007, Gotlands Allehanda April 2007.
7. Eggers, S. (2007) Duvhöksjakt för nöjes skull. Våra Rovdjur, 1, 20-22.
6. Eggers, S. (2006): Skyddsjakt på duvhök – en skamfläck inom svensk naturvård. Vår Fågelvärld, 6, 31-33
5. Eggers, S. (2006): Skyddsjakt på duvhök – behov och konsekvens. Sveriges Ornitologiska Förening. SOF Rapport. (pdf)
4. Eggers, S. & Ekman, J. (2006): Familjeplanerande lavskrikor. http://info.uu.se/press.nsf/pm/lavskrikor.familjeplanerar.idEC9.html
3. de Jong, J. & Eggers, S. (2005) Tröskelvärden för ekonomi och naturvård i skogen. Syntesarbete, Naturvårdskedjan, CBM, Uppsala
2. Eggers, S. (2003): Glesar skogar hotar lavskrikan. http://info.uu.se/press.nsf/pm/glesa.skogar.id54.html
1. Eggers, S. (1998): Risk control and nest predation in birds. Uppsala University, ISRN: UU-ZPB-IRE--7--SE. ISSN: 1404-6814.
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