1. Centre for Environmental and Marine Research (CESAM), University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
2. Department of Environment and Planning, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
3. RAIZ, Instituto de Investigação da Floresta e Papel, Quinta de S. Francisco, Eixo, 3800-783 Aveiro, Portugal
4. Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal