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Browsing by Author "Monteiro-Henriques, Tiago"

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  • Arrelvados vivazes da bacia hidrográfica do rio Paiva (Portugal)
    Publication . Monteiro-Henriques, Tiago; Bellu, Annalisa; Aguiar, Carlos; Honrado, João; Costa, José Carlos
    Apresenta-se um estudo dos arrelvados naturais vivazes da bacia hidrográfica do rio Paiva, em particular das classes: 1) Festucetea indigestae; 2) Stipo giganteae-Agrostietea castellanae; 3) Molinio-Arrhenatheretea e 4) Nardetea. Com base em inventários realizados desde 2004, bem como em trabalhos publicados onde se estudou o território em causa, reconhecem-se oito associações e uma comunidade enquadráveis nas referidas classes, respectivamente: 1) Polytricho-Agrostietum truncatulae, Diantho langeani-Festucetum summilusitanae ass. nova; 2) Arrhenathero bulbosi-Armerietum beiranae ass. nova, com. de Armeria beirana e Arrhenatherum sardoum; 3) Peucedano lancifolii-Juncetum acutiflori, Agrostio castellanae-Arrhenatheretum bulbosi, Anthemido nobilis-Cynosuretum cristati; 4) Centaureo lusitanae-Pseudarrhenatheretum longifolii ass. nova, Genisto anglicae-Nardetum strictae. Apresenta-se ainda uma associação vegetal casmofítica original, enquadrável na classe Phagnalo-Rumicetea indurati, encontrada no decorrer do presente trabalho, que aqui se descreve dado o seu valor para a conservação da natureza, dominada pelo endemismo do centro de Portugal continental Anarrhinum longipedicellatum (Anarrhinetum longipedicellati ass. nova). Destaca-se o caso particular do arrelvado Arrhenathero bulbosi-Armerietum beiranae, hoje com grande expressão no território em estudo, ocupando parte considerável das áreas graníticas meso a supratemperadas, húmidas a hiper-húmidas, das serras do Montemuro, Leomil e Lapa. A expansão deste arrelvado está indiscutivelmente ligada quer ao abandono da agricultura e do pastoreio – que levaram a uma redução considerável das áreas cultivadas, bem como das comunidades de Molinio-Arrhenatheretea e de Nardetea – quer à elevada frequência de incêndios, dado que se trata de uma comunidade subserial dos carvalhais de Holco mollis- Quercetum pyrenaicae e, pontualmente, de Rusco aculeati-Quercetum roboris quercetosum roboris
    2019Journal article Open access Show more
  • Classification of the Mediterranean lowland to submontane pine forest vegetation
    Publication . Bonari, Gianmaria; Fernández-González, Federico; Çoban, Süleyman; Monteiro-Henriques, Tiago; Bergmeier, Erwin; Didukh, Yakiv P.; Xystrakis, Fotios; Angiolini, Claudia; Chytrý, K.; Acosta, Alicia T.R.; Agrillo, E.; Costa, José Carlos; Danihelka, J.; Hennekens, S.M.; Kavgacı, A.; Knollová, I.; Neto, Carlos; Sağlam, C.; Škvorc, Z.; Tichý, L.; Chytrý, M.
    Aim: Vegetation types of Mediterranean thermophilous pine forests dominated by Pinus brutia, Pinus halepensis, Pinus pinaster and Pinus pinea were studied in various areas. However, a comprehensive formal vegetation classification of these forests based on a detailed data analysis has never been developed. Our aim is to provide the first broad-scale classification of these pine forests based on a large data set of vegetation plots. Location: Southern Europe, North Africa, Levant, Anatolia, Crimea and the Caucasus. Methods: We prepared a data set of European and Mediterranean pine forest vegetation plots. We selected 7,277 plots dominated by the cold-sensitive Mediterranean pine species Pinus brutia, Pinus halepensis, Pinus pinaster and Pinus pinea. We classified these plots using TWINSPAN, interpreted the ecologically and biogeographically homogeneous TWINSPAN clusters as alliances, and developed an expert system for automatic vegetation classification at the class, order and alliance levels. Results: We described Pinetea halepensis as a new class for the Mediterranean lowland to submontane pine forests, included in the existing Pinetalia halepensis order, and distinguished 12 alliances of native thermophilous pine forests, including four newly described and three informal groups merging supposedly native stands and old-established plantations. The main gradients in species composition reflect elevational vegetation belts and the west–east, and partly north–south, biogeographical differences. Both temperature and precipitation seasonality co-vary with these gradients. Conclusions: We provide the first formal classification at the order and alliance levels for all the Mediterranean thermophilous pine forests based on vegetation-plot data. This classification includes traditional syntaxa, which have been critically revised, and a new class and four new alliances. We also outline a methodological workflow that might be useful for other vegetation classification syntheses. The expert system, which is jointly based on pine dominance and species composition, is a tool for applying this classification in research and nature conservation survey, monitoring and management
    2021Journal article Open access Show more
  • Climate change and outdoor regional living plant collections: an example from mainland Portugal
    Publication . Monteiro-Henriques, Tiago; Espírito-Santo, Maria Dalila
    Climate change threatens not only plant species occurring naturally, but also impacts on regional living plant collections, which play an important role in ex situ conservation strategies. In the last few years, several global circulation models have been used to predict different global climate change scenarios. Due to their coarse resolutions, and while more detailed regional approaches are not available, downscaling techniques have been proposed, as a very simple first approach to increase detail. We analysed seven sites on mainland Portugal with potential for species conservation (four botanic gardens and three universities), in the light of downscaled climate change scenarios, using an environmental envelope approach and a predefined bioclimatic neighbourhood for each site. Thresholds for the bioclimatic neighbourhood were based on Rivas-Martı´nez’s Bioclimatic Classification of the Earth. For each site, the expected geographical shift of its original bioclimatic neighbourhood (1950–2000) was mapped for 2020, 2050 and 2080. Analysing those shifts enabled us to delineate knowledge-transfer paths between sites, according to the analysed scenarios. We concluded that, according to the Intergovernmental Panel on Climate Change A2 scenario, all considered sites will be outside the predefined bioclimatic neighbourhood by 2080, while according to the B2 scenario all of them will be inside that neighbourhood, although sometimes marginally so. Therefore, the implementation of global sustainability measures as considered in the B2 scenario family can be of great importance in order to delay significantly the impacts of climate change, giving extra time for the adaptation of the outdoor regional living plant collections
    2011Journal article Open access Show more
  • Coastal and sub-coastal vegetation of the Namibe desert (SW Angola)
    Publication . Costa, José Carlos; Cardoso, João Francisco; Monteiro-Henriques, Tiago; Capelo, Jorge; Neto, Carlos; Rivas-Martinez, Salvador
    2016Conference object Open access Show more
  • Coastal halophilous Limonium communities from West Iberian Peninsula
    Publication . Costa, José Carlos; Neto, Carlos; Monteiro-Henriques, Tiago; Arsénio, Pedro; Portela-Pereira, Estevão; Caperta, Ana; Izco, Jesús
    In the present work, we studied seven communities occurring in salt marshes in the west of the Iberian Peninsula, mostly ascribable to Sarcocornietea fruticosae class. Three new syntaxa are described: Myriolimo diffusi-Limonietum algarvensis, Triglochino maritimae-Sarcocornietum alpini subass. puccinellietosum maritimae and Limonion lanceolati-algarvensis. The first one is a chamaephytic community existing on thermomediterranean dry salt marshes, only inundated during high tides; it occupies welldrained sands from the Algarve (Coastal Lusitanian- Andalusian Province, Mediterranean Region), which the director species are the Iberian endemisms Myriolimon diffusum and Limonium algarvense. The second one is a halophytic community formed by Sarcocornia perennis subsp. alpini, Triglochin maritima, Halimione portulacoides, Puccinellia maritima, and Plantago maritima on sites occasionally inundated by saltwater, rich in sand and silt, north of the Ria de Aveiro (Miniense District, Cantabrian- Atlantic Subprovince, Eurosiberian Region). The last one is the alliance Limonion lanceolati-algarviensis, formed by Limonium sp. pl. communities from the Coastal Lusitanian-Andalusian Province. We also extend the distribution area of Puccinellio tenuifoliae- Limonietum plurisquamati to the Tagus estuary We propose the segregation between Myriolimetum ferulacei, from the Algarve sea cliffs, and Inulo crithmoidis- Myriolimetum ferulacei, from salt marshes
    2014Journal article Open access Show more
  • Ecoinformática e geobotânica em Portugal: necessidade de integração e acesso livre
    Publication . Monteiro-Henriques, Tiago; Arsénio, Pedro; Ribeiro, Sílvia
    Uma das questões fundamentais em ecoinformática é a disponibilidade de dados/informação em formatos digitais que sejam utilizáveis por computadores. Desta forma, os dados e informação podem ser (facilmente) introduzidos em processamentos e análises computacionais. Ao longo das últimas décadas, os botânicos e geobotânicos têm produzido um conjunto importante de dados e de informação cuja integração, disponibilização e tratamento é premente. Nesta apresentação, reveem-se as principais bases de dados e fontes de informação relacionadas com a geobotânica portuguesa, de uma perspectiva ecoinformática, i.e. avaliando a sua integrabilidade em programas informáticos. O acesso livre e em linha a tais bases e fontes é relevante para o desenvolvimento de ferramentas informáticas úteis à comunidade científica. A título de exemplo, apresenta-se um conjunto de ferramentas, em desenvolvimento, dedicadas a facilitar a importação e harmonização taxonómica de dados de vegetação, bem como à análise e manipulação de matrizes fitossociológicas (pacotes desenvolvidos em linguagem R, em código aberto). Defende-se que é urgente a criação de portais que integrem os dados, a informação e as ferramentas relacionadas com a ciência da vegetação (e.g.:https://point-veg.utad.pt/). A partilha de dados e informação entre a comunidade científica (preferencialmente em formatos baseados em tabelas, listas, ou similares) será fundamental quer para a sua aplicação prática à gestão e à conservação dos recursos naturais.
    2022Conference object Open access Show more
  • Environmental suitability of selected bamboo species in the Iberian Peninsula
    Publication . Monteiro-Henriques, Tiago; Arsénio, Pedro Miguel Ramos
    In the present report, for a set of selected bamboo species, we studied the environmental conditions in the native regions of each species, as well as in non-native regions (where the species has been introduced, and most probably cultivated). Subsequently, we mapped the respective environmental suitability in the Iberian Peninsula, using a geometric approach to model the species niche. We believe that the present report is a relevant management tool for bamboo cultivation in the Iberian Peninsula.
    2024-02Working paper Open access Show more
  • Floristic distinctiveness of the low and mid-altitude peat-rich heathlands of the western Iberian Peninsula and northwestern Morocco
    Publication . Neto, Carlos; Monteiro-Henriques, Tiago; Costa, José Carlos; Capelo, Jorge; Bellu, Annalisa; Geraldes, Miguel; Freiburg, Ulrich Deil
    Peat-rich heathlands, characterized and dominated by Ericaceae and Genisteae, are the southernmost outliers of the class Calluno-Ulicetea in the Mediterranean region. They occur in small and isolated patches along the Atlantic façade of the SW Europe on acidic soils with peat formation and on hydromorphic podzols. Such sites could have acted as refugia for hygrophilous plant during dry climatic phases in earth history. Recent phylogeographic studies of the Genista anglica-ancistrocarpa complex showed a clear separation of a clade, distributed in Western Europe and the Northern Iberian Mountains (Genista anglica), and a clade of SW-Iberian and NW-Moroccan distribution (G. ancistrocarpa) indicating long-term isolation (possibly since the end of the Tertiary) upcoming form intricate paleogeographic and paleoclimatic patterns. In order to access if such long-term patterns are nowadays traceable at the community level, we analysed all the available data of the Genistion micrantho-anglicae from the Iberian Peninsula and NW Morocco. The agglomerative hierarchical clustering shows a clear separation of two clusters: A) Ulici lusitanici-Genistion ancistrocarpae all. nov. hoc loco (typus: Cirsio welwitschii-Ericetum ciliaris) and B) Genistion micrantho-anglicae. This floristic differentiation is congruent with ecological and phytogeographical patterns: The first alliance is distributed along coastal areas and usually at lower altitudes within thermo- and mesomediterranean bioclimatic belts, while the associations of the latter occur at higher altitudes and in the interior and northern parts of the Iberian Peninsula, under temperate macrobioclimate. Both alliances have their own character taxa (some of them geographical vicariants) and are furthermore differentiated by transgressive species, which add further biogeographic information coming from the surrounding vegetation matrix. Finally we underline the conservation value of heathy peatlands as a refugium for the southernmost populations of Atlantic plant species in the Mediterranean region.
    2019Book part Open access Show more
  • Fraxino Angustifoliae-Ulmetum Glabrae: an original endemic and extremely localized forest from mainland Portugal
    Publication . Monteiro-Henriques, Tiago; Costa, José Carlos; Bellu, Annalisa; Aguiar, Carlos
    The natural occurrence of Ulmus glabra in mainland Portugal has been recently recognized. These punctuated occurrences are peripheral and scattered from the main distribution area in the centre and north of Europe. U. glabra colonizes soils of heavy textures, relatively rich in bases, cool and frequently rocky on steep slopes (e.g. ravines, shadowy canyons), under supra to orotemperate, humid to hyperhumid bioclimates. This combination of ecological factors is rather unusual inmainland Portugal, however during an inventory excursion in the north of Portugal (Serra do Montemuro), in a small canyon ofBalsemão riverwe detected a mesophilous/temporihygrophilous forest dominated by U. glabra and Fraxinus angustifolia. This forest is extremely localized occurring on Ordovician silty schists, under upper mesotemperate to supratemperate hyperhumid bioclimate. It probably corresponds to an interglacial refugium for the species. We ran an edaphoclimatic model within a geographical information system, in order to highlight other possible areas of occurrence for this forests and guide future efforts in finding it in mainland Portugal.
    2010Journal article Open access Show more
  • Habitat use at fine spatial scale: how does patch clustering criteria explain the use of meadows by red deer ?
    Publication . Bellu, Annalisa; Bugalho, Miguel N.; Monteiro-Henriques, Tiago; Costa, José Carlos; Rego, Francisco Castro
    Large mammalian herbivores are keystone species in different ecosystems. To mediate the effects of large mammalian herbivores on ecosystems, it is crucial to understand their habitat selection pattern. At finer scales, herbivore patch selection depends strongly on plant community traits and therefore its understanding is constrained by patch definition criteria. Our aim was to assess which criteria for patch definition best explained use of meadows by wild, free-ranging, red deer (Cervus elaphus) in a study area in Northeast Portugal. We used two clustering criteria types based on floristic composition and gross forage classes, respectively. For the floristic criteria, phytosociological approach was used to classify plant communities, and its objectivity evaluated with a mathematical clustering of the floristic relevés. Cover of dominant plant species was tested as a proxy for the phytosociological method. For the gross forage classes, the graminoids/forbs ratio and the percentage cover of legumes were used. For assessing deer relative use of meadows we used faecal accumulation rates. Patches clustered according to floristic classification better explained selection of patches by deer. Plant community classifications based on phytosociology, or proxies of this, used for characterizing meadow patches resulted useful to understand herbivore selection pattern at fine scales and thus potentially suitable to assist wildlife management decisions
    2012Journal article Open access Show more