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Åsa Berggren

Åsa Berggren
Researcher and teacher in Ecology at the Department of Ecology, SLU


For the past 20 years my research has focussed on major questions within the field of Conservation Biology: (1) the factors that influence population establishment and extinction, from natural processes to conservation reintroductions, (2) population expansion, including the movement and range prediction of invasive species, (3) the impact of climate change on populations and ecosystems, and most recently (4) how to transition to a sustainable food production system based on insect protein. This work has included large-scale introductions and small-scale experiments, genetic analyses, predictive modelling and theory development. Its stakeholder focus has been broad and ranged from academic development, to local community work, government policy and industry standards.




I am the head organiser and teach the under graduate course Naturbårdsbiologi - Conservation Biology BI 1244 that runs annually in autumn.

I supervise master projects within ecology in a wide spectrum of areas and in different taxa.


I am keenly aware of the value of interdisciplinary collaborations to enhance the scope and research quality. I am also active in sharing my research and experiences with students continuously in teaching and supervising, and by participating in conservation projects run by governments or communities.

I am the current President of the Nordic Chapter of SCB (Society for Conservation Biology)

Member of the steering committee for the Swedish Species Information Centre – the national body that evaluates the conservation status of Swedish species.

Member of the Species Survival Commission SSC and the IUCN Re-introduction Specialist Group (RSG). 

Member of: Society for Conservation Biology (SCB), Ornithological Society of New Zealand, the Orthopterists’ Society, Oikos, IALE


Current supervisor for:

PhD student Lina Lönnberg “Effects of landscape structure and management on grassland-living insects”

PhD student Phalla Miech, “Cricket farming – an alternative food and feed“. 

PhD student Juliana Dániel Ferreira, Greener infrastructure: Management of linear infrastructure rights-of-way for biodiversity and landscape connectivity”

Previous supervisor for:

PhD student Lina Ahlbäck, Department of Ecology and (Swedish University of Agricultural Sciences). 2014-2017. Assistant supervisor

Lic student Lina Ahlbäck, Department of Ecology, Swedish University of Agricultural Sciences. 2011-2014. Assistant supervisor

PhD student Emma Göthe, Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences. 2009-2013. Assistant supervisor

PhD student Matt Hiron, Department of Ecology, Swedish University of Agricultural Sciences 2009-2013. Assistant supervisor

PhD student Sonja Preuss 2008 -2012. Main supervisor

PhD student Karin Ahrné. Department of Ecology, Swedish University of Agricultural Sciences, 2009. Assistant supervisor

Post Doc Peter Kanuch, Department of Ecology, Swedish University of Agricultural Sciences, 2008-2010. Assistant supervisor

Selected publications

Semberg E, Rodrigues de Miranda J, Low M, Jansson A, Forsgren E and Berggren Å. 2018. Diagnostic protocols for the detection of Acheta domesticus densovirus (AdDNV) in cricket frass. Journal of Virological methods, In press

Svanberg I and Berggren Å. 2018. Bumblebee honey in the Nordic countries. Ethnobiology Letters, In press

Berggren Å, Low M, and Jansson A. 2018. Towards a sustainable insect food production system. DOI: 10.17011/conference/eccb2018/107672

Ahlbäck Widenfalk L, Jonsson B-G, Helldin J-O, Öckinger E and Berggren Å. 2018. Does EU matter for conservation? The birds and habitats directives from a Nordic perspective. DOI: 10.17011/conference/eccb2018/107977

Berggren Å, Jansson A. and Low M. 2018. Using current systems to inform rearing facility design in the insect-as-food industry. Journal of Insects as Food and Feed, 4: 167-170

Widenfalk L, Sallmén N, Hedin Å and Berggren Å. Translocation of a sand-associated blister beetle (Apalus bimaculatus) due to urban development in Uppsala, Sweden. Global Re-introduction Perspectives: 2017, IUCN In Press

Miech P, Berggren Å, Lindberg J. E, Chhay T, Khieu B, Jansson A. 2016. Growth and survival of reared Cambodian field crickets (Teleogryllus testaceus) fed weeds, agricultural and food industry by-products. Journal of Insects for Food and Feed 2:285-292

Preuss S, Berggren Å, Cassel-Lundhagen A. 2015. Genetic patterns reveal an old introduction event and dispersal limitation despite rapid distribution expansion. Biological Invasions 17:2851-2862

Jansson A and Berggren Å. 2015. Insects as food – something for the future? A report from Future Agriculture, Uppsala, Swedish University of Agricultural Sciences (SLU).

Hiron M, Berg Å, Eggers S, Berggren Å, Josefsson J, Pärt T. 2015. The relationship of bird diversity to crop and non-crop heterogeneity in agricultural landscapes. Landscape Ecology 30:2001-2013.

Widenfalk LA, Bengtsson, J, Berggren Å, Zwiggelaar K, Spijkman E, Huyer-Brugman F, Berg MP. 2015. Spatially structured environmental filtering of collembolan traits in late successional salt marsh vegetation. Oecologia 179:537-549.

Widenfalk LA, Ahrné K and Berggren Å. 2014. Using citizen-reported data to predict distributions of two non-native insect species in Sweden. Ecosphere 5:156.

Preuss S, Low M, Cassel-Lundhagen A and Berggren Å. 2014 Evaluating range-expansion models for calculating non-native species’ expansion rate. Ecology and Evolution, 4:2812-2822

Kanuch P, Berggren Å and Cassel-Lundhagen A. 2014. Genetic diversity of a successful colonizer: isolated populations of Metrioptera roeselii regain variation at an unusually rapid rate. Ecology and Evolution, 4:1117-1126

Ahlbäck L and Berggren Å. 2013. The effect of landscape structure and habitat composition on the presence of the threatened parasitic sand-living beetle Apalus bimaculatus (Coleoptera: Meloidae). The Canadian Entomologist, 145:626-638

Eriksson A, Low, M and Berggren Å. 2013. Influence of linear versus network corridors on the movement and dispersal of the bush-cricket Metrioptera roeseli (Orthoptera: Tettigoniidae) in an experimental landscape. European Journal of Entomology, 110:81-86

Kaňuch P, Berggren Å and Cassel-Lundhagen A. 2013. Colonisation history of Metrioptera roeselii in northern Europe indicates human-mediated dispersal. Journal of Biogeography 40:977-987

Björkman C, Berggren Å and Bylund H. 2011. Causes behind insect folivory patterns in latitudinal gradients. Journal of Ecology, 99:367-369

Preuss S, Cassel-Lundhagen A and Berggren Å. 2011. Modelling the distribution of Roesel’s bush-cricket (Metrioptera roeseli) (Orthoptera: Tettigoniidae) in a fragmented landscape. NeoBiota, 11:33-49.

Cassel-Lundhagen A, Kaňuch P, Low M and Berggren Å. 2011. Limited gene flow enhances adaptation to local optima in isolated populations of Metrioptera roeselii Journal of Evolutionary Biology, 24:381-390

Berggren Å. 2010. Testing the effect of individual color morphology on immune response in bush-crickets. Insect Science, 17:400-405

Kaňuch P, Pfunder M, Berggren Å and Cassel-Lundhagen A. 2010. Description of nine new microsatellite loci in Metrioptera roeselii (Orthoptera: Tettigoniidae) and their multiplex PCR protocols. Molecular Ecology Resources, 10:404-408

Berggren Å and Low M. 2009. The relationship between morphological symmetry and immune response in wild-caught adult bush-crickets, Symmetry, 1:106-114

Berggren Å, Björkman C, Bylund H, and Ayres MP. 2009. The distribution and abundance of animal populations in a climate of uncertainty. Oikos, 118:1121-1126

Berggren Å. 2009. Effects of landscape and population variables on immune response in experimentally introduced bush-cricket populations. Landscape Ecology, 24:749-757

Lewis RM, Armstrong DP, Joy MK, Richard Y, Ravine D, Berggren Å and Boulton RL, 2009. Using artificial nests to predict nest survival at reintroduction sites. New Zealand Journal of Zoology, 33:40-51

Berggren Å. 2008. The effects of population and landscape ecology on body size in orthopterans. Journal of Orthoptera Research, 17:183-188

Berggren Å and Wittern A. 2008. Small-scale, high-resolution studies may reveal patterns missed by broad-scale analyses. Avian Conservation and Ecology, 3:1. [online] URL:

Berggren Å. 2008. Is plumage darkness in the North Island Robin (Petroica longipes) mediated by aggression? New Zealand Journal of Zoology, 35:331-334

Wittern AK and Berggren Å. 2007. Natal dispersal in the North Island robin (Petroica longipes): the importance of connectivity in fragmented habitats. Avian Conservation and Ecology, 2:2. [online] URL:

Berggren Å and Low M. 2006. Sexual dichromatism in North Island robins Petroica longipes is weakened by delayed plumage maturation in males and females. Emu, 106:203-209

Berggren Å. 2006. Intraspecific adoption and foster feeding of fledglings in the North Island robin. New Zealand Journal of Ecology, 30:209-217

Berggren Å. 2006. Topography affects foot trembling side preference in the North Island robin (Petroica longipes). New Zealand Journal of Zoology, 33:197-201

Berggren Å. 2005. The effect of propagule size and landscape structure on morphological differentiation and asymmetry in experimentally introduced Roesel’s bush-crickets. Conservation Biology, 19:1095-1102

Low M, Castro I and Berggren Å. 2005. Cloacal erection promotes vent apposition during forced copulation in the New Zealand stitchbird (hihi): implications for copulation efficiency in other species. Behavioral Ecology and Sociobiology, 58:247-255

Berggren Å. 2005. The effect of conspecifics on individual male movement in Roesel’s bush-cricket, Metrioptera roeseli. Ecological Entomology, 30:480-483

Berggren Å. 2005. Comparing anting hypothesis predictions to observations of behaviour in a North Island robin (Petroica australis longipes). Notornis 52:112-114

Berggren Å. 2005. Effect of the blood-sucking mite Ornithonyssus bursa on chick growth and fledging age in the North Island robin. New Zealand Journal of Ecology, 29:243-250

Berggren Å. 2005. Prevalence and impact of the native blood-sucking louse-fly (Ornithoica sp) on the North Island robin (Petroica australis longipes). Notornis, 52:114-116

Low M, Berggren Å, Morgan KJ and Alley MR. 2005. Aspergillosis in a North Island robin (Petroica longipes). New Zealand Veterinary Journal, 53:462-464

Berggren Å and Low M. 2004. Leg problems and banding-associated leg injuries in a closely monitored population of North Island robin (Petroica longipes). Wildlife Research, 31:535-541

Berggren Å 2004. Impact of grazing on individual male movement in Roesel’s bush-cricket Metrioptera roeseli: One possible clue to species range expansion. Journal of Insect Behaviour, 17:419-429

Berggren Å and Low M. 2004. Exclusion of the native bog bush-cricket Metrioptera brachyptera by the currently invading Roesel’s bush-cricket Metrioptera roeseli. Entomologisk Tidskrift, 125:125-132

Berggren Å, Armstrong DP, and Lewis RM. 2004. Delayed plumage maturation increases overwinter survival in North Island robins. Proceedings of the Royal Society of London B, 271:2123-2130

Berggren Å and Merilä J. 2004. WWW design code - a new tool for colour estimation in animal studies. Frontiers in Zoology, 1:2. [online] URL:

Berggren Å, Birath B and Kindvall O. 2002. Effect of corridors and habitat edges on dispersal behavior, movement rates and movement angles in Roesel’s bush-cricket Metrioptera roeseli. Conservation Biology, 16:1562-1569

Berggren Å. 2001. Colonization success in Roesel's bush-cricket Metrioptera roeseli: the effects of propagule size. Ecology, 82:274-280

Berggren Å, Carlson A and Kindvall O. 2001. The effect of landscape composition on colonization success, growth rate and dispersal in introduced bush-crickets Metrioptera roeseli. Journal of Animal Ecology, 70:663-670

Kindvall O, Vessby K, Berggren Å and Hartman G. 1998. Individual mobility prevents an Allee effect in sparse populations of the bush-cricket Metrioptera roeseli: an experimental study. Oikos, 81:449-457



Professor at the Department of Ecology; NJ, Insect Ecology Unit
Telephone: +4618672344
Postal address:
Inst för ekologi, Box 7044
756 51 UPPSALA
Visiting address: Ulls Väg 16, Uppsala