The main focus in my research is bryophyte taxonomy and evolutionary
biology of epiphytism. Most of my research concentrates on tropical pleurocarps,
especially those in the order Hypnales and in families Meteoriaceae,
Brachytheciaceae, Lembophyllaceae and Neckeraceae. These families are species-rich
and very visible component in humid tropical and warm temperate forests occurring
often in areas where flora is still poorly studied. Besides morphological
evolution and taxonomy, I also use molecular systematic methods for studying
biogeography.

Because of shared interest in tropical epiphytes and their morphological
characteristics, I am involved in project on functional ecology of epiphytes in
tropical mountain cloud forests in Peru. In addition, I work as an expert in
the project funded by the Global Biodiversity Information Facility (GBIF) aiming
to confirm identifications and to mobilize data on bryophyte collections held in
the Herbarium of the University of Science, Vietnam National University Ho Chi
Minh City (PHH) (see link below). (see link blow). Collections in PHH provides
an excellent material for taxonomic and floristics studies on Vietnamese mosses,
and therefore we also aim to produce electronic identification keys for mosses
in Vietnam.

I am a member of the Finnish bryophyte expert group that evaluates the
conservation status of all Finnish bryophyte species at every ten-year intervals.
This task also includes updating the Finnish bryophyte checklist maintained by Finnish
Biodiversity Information Facility (FinBIF; https://laji.fi/en)
and taxonomic work on Finnish bryophytes.

BIFA project funded
by GBIF: https://www.gbif.org/project/5joJ2AYB8QMwaosayIoMeU/data-mobilization-of-vietnamese-herbarium-cryptogam-collections

Species expert groups
in Finland: http://www.ymparisto.fi/en-US/Nature/Species/Species_protection_work/The_species_expert_groups_in_Finland

Finnish bryophyte
expert group: https://www.facebook.com/sammaltyoryhma/