Roberto JardimUniversity of Madeira | UMA · Centro de Ciências da Vida
Roberto Jardim
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Introduction
Publications
Publications (53)
73 new references for 72 taxa of vascular plant are here reported for the Madeira archipelago. 55 not previously recorded for Desertas Islands, 12 to Porto Santo Island and 6 for Madeira Island. Of the 72 taxa, 28 are xenophytes, and 10 are new taxa to the flora of the archipelago (of these 9 are xenophytes). Their native status, taxonomy and distr...
Macaronesian islands include a high degree of plant endemicity and correspond to one of the most threatened biodiversity hotspots due to several human driven impacts such as habitat loss, invasive species, overexploitation or climate change. The conservation status of the largest of the two known population of Musschia isambertoi M. Seq., R. Jardim...
Although usually acknowledged as a major factor of landscape change, human actions are seldom introduced in biodiversity accounts and approaches, even in the contemporary ones, namely in those rooted in classical island biogeography (McArthur &Wilson, 1967). In fact, most models on biodiversity assume a rather conservative approach assuming that bi...
A new species, Pericallis menezesii, is described from the island of Porto Santo in the Madeiran archipelago. Morphological comparisons are made with its sister taxon, P. aurita which is now considered to be endemic to the island of Madeira.
Andryala perezii M. Z. Ferreira, R. Jardim, Alv. Fern. & M. Seq. (Asteraceae), a new species from the Canary Islands, is described and illustrated. Although formerly included in A. glandulosa Lam., the new species differs remarkably from Madeiran populations by its woolly stellate pubescence, scattered glandular pubescence restricted to the peduncl...
35 new species are reported for the first time for Porto santo Island (Madeira archipelago) of which one is a Madeiran endemic [Carduus squarrosus (DC.) Lowe], one is a Macaronesian endemic (Rubia fruticosa Aiton subsp. fruticosa), one is considered possible native (Anchusa azurea Mill.), five are possible introductions [Achyranthes sicula (L.) All...
Based on morphological characters a new combination for Andryala crithmifolia Aiton, endemic from Madeira Island (Portugal), is proposed: Andryala crithmifolia subsp. coronopifolia (Lowe) M.Z.Ferreira, R.Jardim, Álv. Fern. & M.Seq. This taxon is presently known from one isolated population on the sea cliff of Cabo Girão. A detailed description is i...
The internal transcribed spacer (ITS) of the newly described Sonchus parathalassius J.G. Costa ex Jardim. & M.Seq. was sequenced and used to estimate phylogenetic relationships within subgen. Dendrosonchus Sch.Bip. ex Boulos. The ITS sequences of S. parathalassius were compared with sequences of other Dendrosonchus taxa available from GenBank. Resu...
1. Predictive models of species distribution emerge as a valuable tool for tackling the lack of distributional information on most taxa. A function between the dependent variable presence/absence of the species) and a set of potential predictors is established, and a map is generated for the focus area, indicating the probability of presence of the...
In this paper we propose a syntaxonomic scheme, according to the Code of Phytosociological Nomenclature for the vegetation of Portugal: continental and the Azores and Madeira archipelagos. The scheme encompasses 827 associations (4 communities), 245 alliances, 116 orders, and 64 vegetation classes. The 58 suballiances, 2 suborders and 4 subclasses,...
A new species endemic from the island of Porto Santo (Madeira Archipelago) is described as Echium portosanctensis J.A. Carvalho, Pontes, Batista-Marques & R. Jardim. Morphological studies based on reproductive and vegetative traits revealed a set of diagnostic characters confirming separation of E. portosanctensis from other recognized species at s...
In these contributions to the flora of Porto Santo Island (Madeira Archipelago) is proposed the recognition of Helichrysum melanophthalmum DC. var. rosea Lowe at subspecific level as Helichrysum melaleucum Rchb. subsp. roseum (Lowe) R.Jardim & M.Seq., comb. nov. Eight new species are reported for the first time for Porto Santo Island, two are consi...
Oceanic islands have been the grand stage of documented extinctions. In view of limited resources, efficient prioritization
is crucial to avoid the extinction of taxa. This work lists the top 100 management priority species for the European archipelagos
of the Macaronesian region (Azores, Madeira and the Canary Islands), taking into account both th...
Current threats to the planet's biodiversity are unprecedented, and they particularly imperil insular floras. In this investigation, we use the threat factors identified by the Millennium Ecosystem Assessment as the main drivers of biodiversity loss on islands to define and rank 13 current, continuing threats to the plant diversity of nine focal ar...
Carvalho, J.A., Pontes, T., Batista-Marques, M.I. & Jardim, R.
2010. Una nueva especie de la isla de Porto Santo (Archipiélago de Madeira). Anales Jard. Bot. Madrid. 67(2): 87-96 (en inglés).
Echium portosanctensis J.A. Carvalho, Pontes, Batista-Marques & R. Jardim se describe para la isla de Porto Santo (Achipiélago de Madeira). Estudios morfológi...
Oceanic islands have been the grand stage of documented extinctions. In view of limited resources, efficient prioritization is crucial to avoid the extinction of taxa. This work lists the top 100 management priority species for the European archipelagos of the Macaronesian region (Azores, Madeira and the Canary Islands), taking into account both th...
The species formerly recognized as Teucrium scorodonia in Madeira is here described as new: Teucrium francoi M. Seq., Capelo, J.C. Costa & R. Jardim. Morphologically close to species of Teucrium gr. scorodonia[T. scorodonia L., T. pseudoscorodonia Desf., T. siculum (Raf.) Guss. and T. kotschyanum Poech], it exhibits, nonetheless, some distinct diag...
1. Predictive models of species distribution emerge as valuable tool for tackling the lack of distributional info mation on most taxa. A function between the depende variable (presence/absence of the species) and a set potential predictors is established, and a map is gener ted for the focus area, indicating the probability of pr sence of the speci...
O arquipélago da Madeira é formado pelo conjunto das ilhas da Madeira, Porto Santo, Desertas e Selvagens e constitui um dos arquipélagos da Região Geográfica da Macaronésia, localizada na margem oriental do Oceano Atlântico Norte, entre o arquipélago dos Açores a Norte e o arquipélago das Canárias a Sul. Este arquipélago oceânico de origem vulcânic...
1. The Azores, Madeira, Selvagens, Canary Islands and Cape Verde are among the richest regions in Fungi, plant and animal diversity in Europe. The main objecti- ves of the EU INTERREG IIIB projects ATLÂNTICO and BIONATURA have been, since 2004, to carry out a de- tailed inventory of the terrestrial Fungi, Flora and Fauna of these archipelagos. This...
El archipiélago de Madeira está formado por las islas de Madeira, Porto Santo, Desertas y Salvajes y constituye uno de los archipiélagos de la región geográfica macaronésica,localizado en el margen oriental del Océano Atlántico norte, entre el archipiélago de Azores al norte y Canarias al sur. Este archipiélago oceánico de origen volcánico posee ac...
A new species of Musschia Dumort. (Campanulaceae), endemic from Madeira Archipelago (Portugal), is described as Musschia isambertoi M. Seq., R. Jardim, M. Silva & L. Carvalho. Both vegetative and reproductive structures have been studied and are remarkably distinct from the recognized species [M. aurea (L. f.) Dumort. and M. wollastonii Lowe]. A fu...
Fact sheets: Conservation status of the most threatned species/subspecies in the vascular flora of Madeira
http://hdl.handle.net/10198/5335
Porto Santo is a deeply eroded oceanic island. The human uses of the territory led to a massive destruction of its primitive vegetation cover and its substitution by new types of vegetation constituted by plants adapted to the novel perturbation regimes introduced by human settlers. A vegetation cover once dominated by trees or shrubs that evolved...
The littoral geomorphology of the Porto Santo Island is of paramount importance in the coastal phytocoenosis assemblage: the southern part of the island has an 8 km long sand beach with littoral sandstone platforms in its eastern extreme; sandstone or volcanic (mostly trachits) sea cliffs predominate in the rest of the island; in the northern part...
Abstract
