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  • I Taxonomic workshop and Field Meeting: “Bryophytes of the Mascarene Islands”. Tropical Bryology Group and University of La Réunion. 7-20 September 2008, St. Dénis, Réunion.
  • XVI Simpósio de Botánica Criptogámica, León, Spain, 19-22 September 2007, co-author of the presentation with H. Hespanhol, C. Sérgio and R. Figueira. “Bryophyte-environment relationships in the rock outcrops of Northwestern Portugal” and “Partition of bryophyte species diversity across spatial scales - a tool for stream ecosystem conservation” (co-authored with C. Vieira and C. Sérgio).
  • Vth Planta Europa Meeting, Cluj, Romania, August 2007.
  • 6th European Bryophyte Conservation Conference, Cluj, Romania, August 2007.
  • XVI IAB World Meeting, Kuala Lumpur, August 2007. Co-author with Lars Söderström of the presentation: Can species richness and richness of range restricted species be used as a tool for species conservation?
  • XVII IBC, 13-17 July 2005, Vienna. Presented a poster (co-authored with M. Ricca and T. Azevedo) "Genetic diversity of Sphagnum subsecundum aggregate populations in Portugal".
  • II Bryophylogeny Meeting Göttingen, Germany, September, 2004. Presented a poster (co-authored with M. Ricca and T. Azevedo) "The use of ITS sequences on the systematics and pylogenetic inferences of Bryophytes".
  • 5th European Bryophyte Conservation Conference, Valencia, Spain, September, 2004. Presented three posters. 1. co-authored with J Marques, H Hespanhol and C Vieira: "Bryo-lichenic epiphytic communities of the Northern Portuguese forests". 2. co-authored with H Hespanhol, C Vieira and A Lomba: "New data on bryophyte distribution in the Peneda-Gerês National Park (NW Portugal): the use of GIS for conservation remarks".
    • 3. co-authored with C Vieira and C Sérgio:"Threatened bryophytes occurrence in Portuguese stream habitats".
  • XV IAB World Meeting, Mérida, Venezuela, January, 2004. Presented a poster (co-authored with: M Ricca & T Azevedo) "Preliminary approach to the molecular characterization of the Sphagnum subsecundum aggregate".
  • IV International ALFA Meeting, Gaia, 2002. Presented three posters. 1. co-authored with C Vieira: "Preliminary approach to the bryoflora of the valley of river Ferreira (Valongo)". 2. co-authored with H Hespanhol, C Vieira, & JJ Honrado: "Bryo-pteridophytic epiphytic communities in Peneda-Geres National Park." 3. co-authored with S Cleto, N Silva, & JJ Honrado: "Exploring the analytical and didactic of high magnification imaging in phytosociology: examples from vegetation of trampled biotopes".
  • International Symposium on "Phylogeography of Southern European Refugia". CIBIO/ICETA, Vairão, March 2002. Presented a poster (co-authored with JJ Honrado, C Aguiar, R Almeida da Silva, H Alves, & F.B Caldas,). "Some Phylogeographic remarks on the Vegetation of Northern Portugal".
  • II Congresso Nacional de Conservação da Natureza, Lisboa, 2001. Presented a poster (co-authored with C Vieira, JJ Honrado & FB Caldas) "As turfeiras do Parque Nacional da Peneda-Gerês: caracterização e conservação". (Mires of Peneda - Gerês National Park: characterization, conservation).
  • V Jornadas de Taxonomia Vegetal”, Lisboa, 1999. Presented a poster (co-authored with C Aguiar, JJ Honrado, M Sequeira, FB Caldas, J Jansen, R Almeida da Silva, H Nepomuceno) “Plantas vasculares e briófitas raras e a proteger no Norte de Portugal Continental“ (Rare vascular plants and bryophytes and their conservation in northern Portugal”).
  • Reunião da Associação lbero-Macaronesica de Jardins Botânicos, Vidago, May, 1988: Presented a poster “As suculentas do Jardim Botânico do Porto”. Meeting of the Ibero-Macaronesian Association of Botanic Gardens (Porto’s Botanical Garden succulents plants).