Chara braunii C.C. Gmelin (Characeae, Charophyta) was found in Madeira Island (Portugal) in a water channel in an agricultural area. This constitutes the first record of that species since 1944 in the Macaronesian region (Azores, Madeira and Canary archipelagos).
O objetivo deste estudo foi caracterizar a evolução do triatlo ao longo dos anos a nível dos resultados, idade e género. Este estudo baseou-se na recolha de dados on line, na internet. Foram analisados como amostra os 20 primeiros classificados em cada Campeonato do Mundo entre 2005 e 2015. Os resultados têm vindo a melhorar no seu global, com especial ênfase no segmento de corrida, o último a ser percorrido, o...
The number of introduced, and possible introduced, taxa in the Madeira and Selvagens islands currently accounts for nearly 36% of the total flora of these archipelagos, including 53 Poaceae taxa (out of 141 Poaceae taxa), therefore constituting the family with the higher proportion of introduced taxa (38.4%). The genus Ehrharta Thunb. comprises about 35 species, with one species, E. longiflora Sm., recorded as ...
The Madeira archipelago vascular flora includes 74 pteridophyte taxa. Of these, eight are exclusive endemics, eight are Macaronesian endemics, being the vast majority, 44, native and 14 referred as introduced taxa. The total number of alien vascular plant taxa is 401 (i.e. 33% of the total flora). The recent detection of several fully naturalized alien fern taxa is a process parallel to that observed in other g...