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Freitas, Helena
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Publications

Results 1-48 of 48 (Search time: 0.126 seconds).

Issue DateTitleAuthor(s)TypeAccess
12015Adjustment Capacity of Maritime Pine Cambial Activity in Drought-Prone EnvironmentsVieira, Joana ; Campelo, Filipe ; Rossi, Sergio ; Carvalho, Ana ; Freitas, Helena ; Nabais, Cristina articleopenAccess
22010Arbuscular mycorrhizal fungal diversity and composition in pastures of the Azores : assessing the impact of management practicesMelo, Catarina Alexandra Drumonde doctoralThesisopenAccess
32008Arbuscular mycorrhizal fungi of Ammophila arenaria (L.) Link: Spore abundance and root colonisation in six locations of the European coastRodríguez-Echeverría, Susana ; Hol, W.H. Gera ; Freitas, Helena ; Eason, William R. ; Cook, Roger articleopenAccess
414-May-2008Belowground mutualists and the invasive ability of Acacia longifolia in coastal dunes of PortugalRodríguez-Echeverría, Susana ; Crisóstomo, João ; Nabais, Cristina ; Freitas, Helena articleopenAccess
513-Dec-2013Cambial activity and wood formation of Maritime pine in a drought-prone environment: the effect of growth rate, size and climateVieira, Joana doctoralThesisopenAccess
613-Dec-2013Cambial activity and wood formation of Maritime pine in a drought-prone environment: the effect of growth rate, size and climateVieira, Joana Margarida Soares doctoralThesisopenAccess
729-Aug-2008Can root-feeders alter the composition of AMF communities? Experimental evidence from the dune grass Ammophila arenariaRodríguez-Echeverría, Susana ; de la Peña, Eduardo ; Moens, Maurice ; Freitas, Helena ; van der Putten, Wim H. articleopenAccess
830-Apr-2007Caracterização da flora vascular e do padrão e dinâmica da paisagem na Serra do Caramulo : análise do estado de conservação de taxa prioritáriosRibeiro, Pedro Miguel da Costa doctoralThesisopenAccess
92004Change in plant spatial patterns and diversity along the successional gradient of Mediterranean grazing ecosystemsAlados, Concepción L. ; ElAich, Ahmed ; Papanastasis, Vasilios P. ; Ozbek, Huseyin ; Navarro, Teresa ; Freitas, Helena ; Vrahnakis, Mihalis ; Larrosi, Driss ; Cabezudo, Baltasar articleopenAccess
102008Characterization of metal-resistant plant-growth promoting Bacillus weihenstephanensis isolated from serpentine soil in PortugalRajkumar, Mani ; Ma, Ying ; Freitas, Helena articleopenAccess
112006Diversity of AMF associated with Ammophila arenaria ssp. arundinacea in Portuguese sand dunesRodríguez-Echeverría, Susana ; Freitas, Helena articleopenAccess
122008The early effects of afforestation on biodiversity of grasslands in IrelandBuscardo, Erika ; Smith, George ; Kelly, Daniel ; Freitas, Helena ; Iremonger, Susan ; Mitchell, Fraser ; O’Donoghue, Saoirse ; McKee, Anne-Marie articleopenAccess
132014Ecological networks: delving into the architecture of biodiversityHeleno, Ruben ; Garcia, Cristina ; Jordano, Pedro ; Traveset, Anna ; Gómez, José Maria ; Bluthgen, Nico ; Memmott, Jane ; Moora, Mari ; Cerdeira, Jorge ; Rodrıíguez-Echeverría, Susana ; Freitas, Helena ; Olesen, Jens M. articleopenAccess
1421-Jul-2015Ecological processes related to urban development and land use change in the municipality of CoimbraBarrico, Maria de Lurdes Chorro Simões doctoralThesisopenAccess
152009Ecophysiological tolerance of duckweeds exposed to copperKanoun-Boulé, Myriam ; Vicente, Joaquim A. F. ; Nabais, Cristina ; Prasad, M. N. V. ; Freitas, Helena articleopenAccess
162008Effects of inoculation of plant-growth promoting bacteria on Ni uptake by Indian mustardRajkumar, Mani ; Freitas, Helena articleopenAccess
1729-Sep-2008Effects of land use change on plant composition and ecosystem functioning in an extensive agro-pastoral system : plant functional traits and ecosystems processesCastro, Helena Isabel Ferreira de doctoralThesisopenAccess
182007Effects of nickel hyperaccumulation in Alyssum pintodasilvae on model arthropods representatives of two trophic levelsGonçalves, M. ; Gonçalves, Susana ; Portugal, António ; Silva, Sandra ; Sousa, José ; Freitas, Helena articleopenAccess
1915-Jun-2010Enhanced phytoextraction of metal contaminated soils using plant growth promoting bacteriaMa, Ying doctoralThesisembargoedAccess
2028-Feb-2014A Flore Portugaise e as viagens de Hoffmannsegg e Link a Portugal (1795-1801)Oliveira, Nuno Fernando da Ascenção Gomes doctoralThesisopenAccess
212000Fungal biomass and decomposition in Spartina maritima leaves in the Mondego salt marsh (Portugal)Castro, Paula ; Freitas, Helena articleopenAccess
222007Genetic diversity and differential in vitro responses to Ni in Cenococcum geophilum isolates from serpentine soils in PortugalGonçalves, Susana ; Portugal, António ; Gonçalves, M. ; Vieira, Rita ; Martins-Loução, M. ; Freitas, Helena articleopenAccess
23Aug-2007Genetic diversity of rhizobia associated with Acacia longifolia in two stages of invasion of coastal sand dunesRodríguez-Echeverría, Susana ; Crisóstomo, João A. ; Freitas, Helena articleopenAccess
245-Feb-2014Identification and control of fungal contamination in ancient heritage documentsMesquita, Nuno doctoralThesisembargoedAccess
2530-Apr-2009Improvement of plant growth and nickel uptake by nickel resistant-plant-growth promoting bacteriaMa, Ying ; Rajkumar, Mani ; Freitas, Helena articleopenAccess
262008Influence of metal resistant-plant growth-promoting bacteria on the growth of Ricinus communis in soil contaminated with heavy metalsRajkumar, Mani ; Freitas, Helena articleopenAccess
2729-Aug-2008Inoculation of plant growth promoting bacterium Achromobacter xylosoxidans strain Ax10 for the improvement of copper phytoextraction by Brassica junceaMa, Ying ; Rajkumar, Mani ; Freitas, Helena articleopenAccess
282001Invasão dos ecossistemas dunares portugueses por Acacia : uma ameaça para a biodiversidade nativaMarchante, Hélia Sofia D. C. masterThesisopenAccess
292011Invasion of portuguese dunes by Acacia longifolia : present status and perspective for the futureMarchante, Hélia Sofia Duarte Canas doctoralThesisopenAccess
3030-Apr-2009Isolation and characterization of Ni mobilizing PGPB from serpentine soils and their potential in promoting plant growth and Ni accumulation by Brassica spp.Ma, Ying ; Rajkumar, Mani ; Freitas, Helena articleopenAccess
312014Large and variable genome size unrelated to serpentine adaptation but supportive of cryptic sexuality in Cenococcum geophilumBourne, Elizabeth C. ; Mina, Diogo ; Gonçalves, Susana C. ; Loureiro, João ; Freitas, Helena ; Muller, Ludo A.H. articleopenAccess
322006Mechanism of control of root-feeding nematodes by mycorrhizal fungi in the dune grass Ammophila arenariaPeña, Eduardo de la ; Echeverría, Susana Rodríguez ; Putten, Wim H. van der ; Freitas, Helena ; Moens, Maurice articleopenAccess
3317-Jun-2015Modelo de avaliação de sustentabilidade integrado e global para ecossistemas florestais: Bioenergia, produtos derivados de madeira e co-produtosNunes, João Miguel dos Santos Almeida doctoralThesisembargoedAccess
342014A Ni hyperaccumulator and a congeneric non-accumulator reveal equally effective defenses against herbivoryBoas, Mariana Vilas ; Gonçalves, Susana C. ; Portugal, Antonio ; Freitas, Helena ; Gonçalves, M. Teresa articleopenAccess
352015On the Limited Potential of Azorean Fleshy Fruits for Oceanic DispersalEsteves, Carolina Franco ; Costa, José Miguel ; Vargas, Pablo ; Freitas, Helena ; Heleno, Ruben articleopenAccess
362011Payments for environmental services as a policy tool for conserving the portuguese montado ecosystemRibas, Thaís de Toledo masterThesisopenAccess
372017Rain exclusion affects cambial activity in adult maritime pinesVieira, Joana ; Nabais, Cristina ; Rossi, Sergio ; Carvalho, Ana ; Freitas, Helena ; Campelo, Filipe articleembargoedAccess
382004Recovery Potential of Dune Ecosystems Invaded by an Exotic Acacia Species (Acacia longifolia)Marchante, Hélia S. ; Marchante, Elizabete M. ; Buscardo, Erika ; Maia, José ; Freitas, Helena articleopenAccess
392008Responses of root-feeding nematodes (Helicotylenchus spp.) to local and non-local populations of the host plant Ammophila arenariaSchreck Reis, Catarina ; Freitas, Helena ; van der Putten, Wim H. articleopenAccess
402007Salicornia ramosissima population dynamics and tolerance of salinitySilva, Helena ; Caldeira, Gustavo ; Freitas, Helena articleopenAccess
412013Seasonal and daily cycles of stem radial variation of Pinus pinaster in a drought-prone environmentVieira, Joana ; Rossi, Sergio ; Campelo, Filipe ; Freitas, Helena ; Nabais, Cristina articleembargoedAccess
4229-Aug-2008Short- and long-term impacts of Acacia longifolia invasion on the belowground processes of a Mediterranean coastal dune ecosystemMarchante, Elizabete ; Kjøller, Annelise ; Struwe, Sten ; Freitas, Helena articleopenAccess
432008Soil recovery after removal of the N2-fixing invasive Acacia longifolia : consequences for ecosystem restorationMarchante, Elizabete ; Kjøller, Annelise ; Struwe, Sten ; Freitas, Helena articleopenAccess
442007Testing for the survey mode effect on contingent valuation data quality: A case study of web based versus in-person interviewsMarta-Pedroso, Cristina ; Freitas, Helena ; Domingos, Tiago articleopenAccess
4530-Mar-2016The decline of cork oak woodlands: biotic and abiotic interactions in Portuguese montadosArosa González, Maria Luisa doctoralThesisopenAccess
462015The response of reptile communities to wildfires in the Serra da Estrela Natural ParkFerreira, Tiago António Pinto masterThesisopenAccess
472014Which matters most for the formation of intra-annual density fluctuations in Pinus pinaster: age or size?Campelo, Filipe ; Vieira, Joana ; Battipaglia, Giovanna ; de Luis, Martin ; Nabais, Cristina ; Freitas, Helena ; Cherubini, Paolo articleembargoedAccess
482014Xylogenesis of Pinus pinaster under a Mediterranean climateVieira, Joana ; Rossi, Sergio ; Campelo, Filipe ; Freitas, Helena ; Nabais, Cristina articleembargoedAccess