Phenotypic variation at different spatial scales in relation to environment in two circumpolar bryophyte species

Annika K Jägerbrand
Ingibjörg S Jonsdottir
Rune H Økland

Morphology, physiology and biomass in two widespread bryophyte species, Hylocomium splendens and Racomitrium lanuginosum, were studied to examine the extent to which different species exhibit similar phenotypic variation patterns within and across regions. Analyses of nine morphological variables, chlorophyll content, nitrogen content, C/N ratio and biomass were conducted in samples from five sites in two geographically separated and climatically different regions, Iceland and northern Sweden. Both species exhibited large between-site variation in morphology, physiology and biomass, but within-site variation in morphology was substantially higher in Hylocomium splendens than Racomitrium lanuginosum. Morphological patterns were partly similar, partly different between the species, indicating that the two species respond morphologically to external factors on different scales. The lowest concentrations of chlorophyll and nitrogen were found at the same sites for both species, while the site of highest concentration was not the same. In Hylocomium splendens, chlorophyll content was positively correlated with biomass. Many of the observed relationships between morphological, physiological variables and biomass were species-specific. Our results demonstrate that the two bryophytes exhibit different phenotypic responses to environmental variation. Copyright © Lindbergia 2006.



Cost Benefit Analysis (CBA) workshop in Stockholm

An open seminar and workshop in Stockholm will be held on 25-26 April 2018. The workshop deals with the use of CBA as a basis for decision-making in the public sector. The workshop is organized by, among others, Professor Jan-Eric Nilsson, VTI.



Modal shift for an environmental lift?

Investigations in Sweden and other countries suggest a shift of goods transport from road to rail and waterborne transport to reach environmental and climate objectives. VTI is leading a new project to investigate how the modal shift can contribute and what...


Automation and digitalisation are making rail competitive

Road transport is developing rapidly and its productivity has increased sharply. Rail transport, however, has not developed at the same rate. Automation and digitalisation are essential if rail freight in Europe is to survive.


New research is creating a driverless logistics chain

The research project Born to Drive has come up with a system that allows new cars to move, without a driver, from the production line out to the parking area prior to being transported elsewhere. The vision is to automate the entire logistics chain from...


VTI testing automation in EU project

VTI is leading a series of tests in a major EU project on automated driving. The first driving tests were carried out n a test track in Slovenia in December. The project will focus in part on acceptance among different groups in society, in part on...


Freight transportation on road and rail analysed

Freight transport accounts for a large proportion of the emissions, noise and congestion produced by road traffic. Transporting freight in larger but fewer lorries could reduce the problem. At the same time it might entail freight being diverted from more...


Millions for research into maritime transport and the environment

Maritime transport is a major source of emissions of harmful air pollutants and carbon dioxide. In a new project, a research team from the Swedish National Road and Transport Research Institute (VTI) and the University of Gothenburg has received SEK 6.4...