Lars E Ericson

Contact Information

vCard vcard

Position:

Professor emeritus

personbild

Works at:

Ecology and Environmental Sciences

Address:

Umeå universitet
SE-901 87 Umeå
Sverige

Visiting Address:

KB. H3, Linnaeus väg 6, Umeå

Tel:

+46 90 786 54 14

Mobile Phone:

+46 70 264 53 96

Email:

lars.ericson@umu.seEmail 2

lars.ericson@emg.umu.seEmail 1

Lync:

Get in touch via Lync

Web Page:

http://www.emg.umu.se/english/about-the-department/staff/ericson-lars Web Page
http://www.emg.umu.se/om-institutionen/personal/ericson-lars Web Page

Research

My research is focused on interactions between plants and their natural enemies (parasitic fungi and herbivores) and how these interactions shape population dynamics and community structure. I have two main approaches (1) focused on spatio-temporal dynamics and (2) focused on the role of increased nitrogen availability and temperature (global change).

Spatio-temporal patterns
This work is conducted in a Bothnian archipelago, Skeppsviks archipelago, subjected to isostatic rebound (85 cm/century). This archipelago has about 100 islands that vary in age from young incipient islands to those that are more than 1 000 yr old. This ideally, and for some systems, represents a gradient of increasing temporal coexistence between host plants and their natural enemies, while other systems are more affected by species composition and abiotic factors. Our work addresses colonization and extinction processes of both host plants and their natural enemies and whether these interactions will result in reciprocal interactions between the involved organisms.

The work in the archipelago was initiated in the early 70:ies and has since around 1990 been focused on the role of bi- and tritrophic interactions. We utilize both annual monitorings, and various field- and glasshouse experiments.

Examples of two important study systems are:
Filipendula ulmaria – the rust fungus Triphragmium ulmariae – two chrysomelid beetles Galerucella tenella and Altica engstroemi.
Sedges, Carex spp. – their smut fungi Anthracoidea spp. – and the vector, the shiny beetle Phalcrus substriatus.

Global change
Most boreal plant communities are dominated by ericaceous dwarf-shrubs adapted to nutrient-limitation. These dwarf shrubs house a species rich flora of parasitic fungi which play a key role in structuring these communities. Our work primarily addresses how these interactions are affected by increased nitrogen deposition, and whether this will result in vegetation shifts, but we also address the effects of increased temperature and changed snow package.

This work was initiated in 1996 and we utilize long-term field experiments in nutrient poor forest and mire ecosystems in which we manipulate nitrogen availability, temperature and snow depth. The experiments are located in the Vindeln area, an area characterized by a low background deposition of nitrogen, which allow us to study initial vegetation responses of low doses.

Publications 2004-

Author

Title

Year sorteringsordning

Fulltext

Ericson, Lars
Mueller, Warren J.
Burdon, Jeremy J.

28-year temporal sequence of epidemic dynamics in a natural rust-host plant metapopulation
Journal of Ecology, 105(3): 701-713

2017

-

Lehndal, Lina
Hambäck, Peter A
Ericson, Lars; et al.

Herbivory strongly influences among-population variation in reproductive output of Lythrum salicaria in its native range
Oecologia, 180(4): 1159-1171

2016

-

Fors, Lisa
Markus, Robert
Theopold, Ulrich; et al.

Geographic variation and trade-offs in parasitoid virulence
Journal of Animal Ecology, 85(6): 1595-1604

2016

Download

Stenberg, Johan A
Ericson, Lars

Raspberry inflicts associational susceptibility to meadowsweet in a complex food web
Entomologia Experimentalis et Applicata, 157(1): 68-73

2015

-

Burdon, J.J.
Ericson, Lars E.
Thrall, P.H.

Emerging plant diseases

2014

-

Burdon, Jeremy J.
Thrall, Peter H.
Ericson, Lars

Genes, communities & invasive species: understanding the ecological and evolutionary dynamics of host-pathogen interactions
Current opinion in plant biology, 16(4): 400-405

2013

-

Hamback, Peter A.
Weingartner, Elisabet
Ericson, Lars; et al.

Bayesian species delimitation reveals generalist and specialist parasitic wasps on Galerucella beetles (Chrysomelidae): sorting by herbivore or plant host
BMC Evolutionary Biology, 13: 92-

2013

Download

Olofsson, Johan
te Beest, Mariska
Ericson, Lars

Complex biotic interactions drive long-term vegetation dynamics in a subarctic ecosystem
Philosophical Transactions of the Royal Society of London. Biological Sciences, 368(1624)

2013

-

Olsson, Jörgen
Johansson, Therese
Jonsson, Bengt Gunnar; et al.

Landscape and substrate properties affect species richness and community composition of saproxylic beetles
Forest Ecology and Management, 286: 108-120

2012

-

Olsson, Jörgen
Jonsson, Bengt Gunnar
Hjältén, Joakim; et al.

Addition of coarse woody debris: the early fungal succession on Picea abies logs in managed forests and reserves
Biological Conservation, 144(3): 1100-1110

2011

-


Page Editor: Elisabet Carlborg

Print page

Research area

Terrestrial ecology