1. Marine and Environmental Research Centre (IMAR/CMA), Dept of Life Sciences; Univ. of Coimbra; Coimbra Portugal
2. Centre for Functional Ecology, Dept of Life Sciences; Univ. of Coimbra; Coimbra Portugal
3. Dept of Bioscience; Aarhus Univ.; Aarhus Denmark
4. Mediterranean Inst. of Advanced Studies (CSIC-UIB), Terrestrial Ecology Group; Mallorca, Balearic Islands Spain