Martin Schroeder

I am a professor at the unit of forest entomology (Department of ecology, Faculty of Forest Science).

My main research area is the spruce bark beetle (Ips typographus) which is the most important pest on mature Norway spruce in Europe. I also do research on non-native bark- and woodboring insects that have established in Sweden and ecological risks of introducing non-native tree species in forestry. My research areas regarding the spruce bark beetle are: (1) which are the main factors that initiate and influence the development of outbreaks, (2) how does it adapt to different climatic regions, (3) the efficiency of control methods and (4) the conservation value of groups of bark beetle killed spruces. The research is based on empirical studies and field and lab experiments.

I am leader of two research projects:

- Influence of spruce bark beetle attack densities and reproductive success for outbreak initiation and development

- Ecological risks with introduction of non-native tree species in forestry

and I participate in one project about the conservation value of bark beetle killed trees

Professor in forest entomology at Swedish University of Agricultural Sciences (2008)

Associate professor at Swedish University of Agricultural Sciences (1992)

Doctor of Forestry at Swedish University of Agricultural Sciences (1988)

Master of Forestry at the Swedish University of Agricultural Sciences (1980) 

Main supervisor

Finished: Per Olof Hedgren (2002), Anders Lindhe (2004), Erik Sahlin (2009), Simon Kärvemo (2015)

Co-supervisor

Finished: Line B Djupström (2010), Ylva Strid (2012), Cornelia Roberge (2017), Diana Rubene (2014), Dragos Cocos (2023), Lina Viklund (2024), Anika Gossman (2025)

Hlasny T et al. (2025) Perspectives: State of national forest damage survey programmes in Europe and ways toward improved harmonization and data sharing. Forest Ecology and Management, 597, 123111.

Schroeder M, Knape J, Kärvemo S (2025) Rise and fall of a spruce bark beetle outbreak - importance of colonisation density and reproductive success. Forest Ecology and Management, 586, 122695.

Schroeder M, Kärvemo S, Cocos D, Öhrn P, Weslien J (2025) Winter mortality of the bark beetle Ips typographus in standing trees and in the ground. Agricultural and Forest Entomology, 27, 211-222.

Cocos D, Schroeder M (2024) Weak performance of the Eurasian spruce bark beetle in the non-native lodgepole pine. Scandinavian Journal of Forest Research, 39,392-401.

Cocos D, Klapwijk MJ, Björkman C, Ravn HP, Schroeder M (2024) Factors affecting population density and colonization success of two non-native beetle species with different breeding/life-history strategies. Frontiers Forest Global Change, 7:1506158.

Gregoire et al (2024) Territorial expansion of the European Ips species in the 20th century - a review. Entomologia Generalis, 44, 1359-1375.

Weslien J, Öhrn P, Rosenberg O, Schroeder M (2024) Effects of sanitation logging in winter on the Eurasian spruce bark beetle and predatory long-legged flies. Forest Ecology and Management, 554, 121665.

Lindman L, Ranius T, Schroeder M (2023) Regional climate affects habitat preferences and thermal sums required for development of the Eurasian spruce bark beetle, Ips typographus. Forest Ecology and Management, 554, 121216.

Cocos D, Klapwijk MJ, Schroeder M (2023) Tree species preference and impact on native species community by the bark beetle Ips amitinus in a recently inavaded region. NeoBiota, 84, 349-367.

Kärvemo S, Schroeder M, Ranius T (2023) Beetle diversity in dead wood is lower in non-native than native tree species, especially those more distantly related to native species. Journal of Applied Ecology, 60, 170-180.

I am active as advicer about the Eurasian spruce bark beetle for authorities, forest companies and private forest owners. I am a member of the Swedish Forest Damage Committee. I have published many popular science publications (se Swedish homepage for examples).