Results 111 to 120 of about 11,347 (217)

Heavy metals biogeochemistry in abandoned mining areas

open access: yesE3S Web of Conferences, 2013
Plants growing on the abandoned Portuguese mines, highly contaminated with W, Sn, As, Cd, Cu, Zn and Pb, have been studied for their biogeochemical indication/prospecting and mine restoration potential.
Favas P. J. C., Pratas J.
doaj   +1 more source

Aportació al coneixement de les bardisses humides a Catalunya [PDF]

open access: yes, 2004
Aquest treball tracta de les bardisses d'ambients frescals que formen la vorada de boscos humits. Descrivim tres noves associacions, de les quals comentem l'ecologia i la distribució, la sintaxonomia, la composició florística, l'estructura, la ...
Villegas i Alba, Neus
core  

Geographical distribution of caudatoside and ptaquiloside in bracken ferns in Northern Europe

open access: yesEnvironmental Sciences Europe
Bracken ferns (genus Pteridium) are among the most prevalent plants worldwide, with their distribution expanding due to their invasive nature. The environmental implications of their proliferation in areas affected by human activity, natural disasters ...
Vaidotas Kisielius   +3 more
doaj   +1 more source

Влияние равномерно-постепенных рубок на состояние нижних ярусов растительности сосняков [PDF]

open access: yes, 2011
Исследования показывают, что проведение первого приема равномерно-постепенных рубок незначительно изменяет в сторону уменьшения проективное покрытие по травяно-кустарничковому ярусу на 4–7% и на 10–15% – по мохово-лишайниковому.
Климчик, Геннадий Яковлевич   +3 more
core  

Potential and historical Uses for bracken (Pteridium aquilinum (L.) Kuhn) in organic agriculture [PDF]

open access: yes, 2002
This report was presented at the UK Organic Research 2002 Conference. Bracken is considered a serious weed species, due to its toxic constituents and negative impacts on agriculture and conservation.
Donnelly, Eric   +2 more
core  

A Phytosociological study of the deciduous oak woods of Sardinia (Italy) [PDF]

open access: yes, 2004
We present here the results from a phytosociological and synchorological study of the deciduous oak woods of Sardinia. This vegetation analysis has allowed the individuation of three new associations: Lonicero implexae-Quercetum virgilianae, Ornithogalo ...
Bacchetta, Gianluigi   +4 more
core  

New Proposals on Portuguese Vegetation (II) [PDF]

open access: yes, 2010
As a consequence of the geobotanical studies that have been developed in west and southern areas of the Iberian Peninsula, four new phytosociological associations are proposed, integrated in the perennial mesophytic grasslands of Stipo giganteae ...
Meireles, Catarina   +2 more
core  

Pteridologist [PDF]

open access: yes, 1990
Index v.2 (1990 ...
British Pteridological Society.   +1 more
core   +1 more source

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