author = "Freitas, Helena"

Encontrado 24 documentos, página mostrada 1 de 3

Acerca de algumas plantas vasculares invasoras em Portugal continental About some invasive vascular plants in continental Portugal

Description: Se analiza la presencia y extensión de 37 especies de plantas invasoras en Portugal , We have selected 37 species of dangerous invasive vascular plants living in continental Portugal. We present tables resuming the main informations related to these species: region of origin, phytotype, kind of synanth...
Language(s): Portugués

Narcissus × caramulensis (Amaryllidaceae), a new hybrid for the portuguese flora Narcissus × caramulensis (Amaryllidaceae), un nuevo híbrido para la flora portuguesa.

Description: We describe Narcissus × caramulensis P. Ribeiro, Paiva & Freitas,a new natural hybrid of Narcissus cyclamineus DC. and N. bulbocodiumL. subsp. bulbocodium, collected in the Caramulo Mountains (Beira Alta, Central Portugal), is described. Morphological characters of the new species are analysed and i...
Language(s): Inglés

Acerca de algumas plantas vasculares invasoras em Portugal continental About some invasive vascular plants in continental Portugal

Description: Se analiza la presencia y extensión de 37 especies de plantas invasoras en Portugal , We have selected 37 species of dangerous invasive vascular plants living in continental Portugal. We present tables resuming the main informations related to these species: region of origin, phytotype, kind of synanth...
Language(s): Portugués

Understory floristic heterogeneity within a Mediterranean oak forest: how much is explained by edaphic, spatial and overstory components?

Description: 13 páginas, 7 tablas, 1 figuras, 1 apéndice. Special thanks go to Ana Mouro, João Luís Mouro, Miguel Porto, Nuno Pires and Sara Dias for assisting in the fieldwork, and Nuno Gomes and associated workers for the EDM loan and field aid. , The understory floristic heterogeneity within a well-preserved Med...
Language(s): Inglés

Influence of forest structure and environmental variables on recruit survival and performance of two Mediterranean tree species (Quercus faginea L. and Q. suber Lam.)

Description: 10 páginas. Special thanks go to Ana Mouro for assisting in the Weldwork and to Teodoro Marañón for comments and reviews of the manuscript. http://www.irnase.csic.es/users/lventura/Eur%20J%20For%20Res%20128(1%2027-36.pdf , We investigated the regeneration requirements of the two dominant tree species i...
Language(s): Inglés

The combined role of topography and overstory tree composition in promoting edaphic and floristic variation in a Mediterranean forest.

Description: 10 pages, 7 tables, 1 figure, 47 references. Special thanks go to Ana Mouro, Joao Luís Mouro, Miguel Porto, Nuno Pires and Sara Dias for assisting in the fieldwork, and Nuno Gomes and associated workers for the EDM loan and field aid. http://www.irnase.csic.es/users/lventura/ER_20_668.pdf , This study ...
Language(s): Inglés

Comunidades de hongos ectomicorrícicos en ambientes propensos al fuego: compañeros esenciales para el reestablecimiento de pinares mediterráneos Ectomycorrhizal communities in fire prone environments: essential partners for pinetrees re-establishment

Description: Las asociaciones mutualistas ectomicorrícicas (ECM) entre hongos y plantas superiores son un componente esencial de la mayoría de las comunidades vegetales y desempeñan un papel fundamental en los ciclos de nutrientes y en el funcionamiento de los ecosistemas. Los hongos ECM, y en particular, el ban...
Language(s): Español

Understory floristic heterogeneity within a Mediterranean oak forest: how much is explained by edaphic, spatial and overstory components?

Description: 13 páginas, 7 tablas, 1 figuras, 1 apéndice. Special thanks go to Ana Mouro, João Luís Mouro, Miguel Porto, Nuno Pires and Sara Dias for assisting in the fieldwork, and Nuno Gomes and associated workers for the EDM loan and field aid. , The understory floristic heterogeneity within a well-preserved Med...
Language(s): Inglés

Influence of forest structure and environmental variables on recruit survival and performance of two Mediterranean tree species (Quercus faginea L. and Q. suber Lam.)

Description: 10 páginas. Special thanks go to Ana Mouro for assisting in the Weldwork and to Teodoro Marañón for comments and reviews of the manuscript. http://www.irnase.csic.es/users/lventura/Eur%20J%20For%20Res%20128(1%2027-36.pdf , We investigated the regeneration requirements of the two dominant tree species i...
Language(s): Inglés

The combined role of topography and overstory tree composition in promoting edaphic and floristic variation in a Mediterranean forest.

Description: 10 pages, 7 tables, 1 figure, 47 references. Special thanks go to Ana Mouro, Joao Luís Mouro, Miguel Porto, Nuno Pires and Sara Dias for assisting in the fieldwork, and Nuno Gomes and associated workers for the EDM loan and field aid. http://www.irnase.csic.es/users/lventura/ER_20_668.pdf , This study ...
Language(s): Inglés

Encontrado 24 documentos, página mostrada 1 de 3

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