Study of the establishment of the endangered Echium acanthocarpum (Boraginaceae) in the Canary Islands

Blue bugloss ( Echium acanthocarpum Svent.) is an endangered endemic plant of La Gomera (Canary Islands). Little is known about its autecology. A seedling cohort was monitored to reveal the causes of extreme fluctuations observed in the population. For this purpose we analysed two plots, one in whic...

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Bibliographic Details
Published inBiological conservation Vol. 94; no. 2; pp. 183 - 190
Main Authors Marrero-Gomez, Manuel V, Arevalo, Jose Ramon, Banares-Baudet, Angel, Alamo, Eduardo Carque
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.07.2000
Subjects
Available area
Canary Islands
Echium acanthocarpum
Neighbourhood effect
Seedlings
Spain, Canary I
Canary Islands
Echium acanthocarpum
Available area
Neighbourhood effect
Seedlings
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Summary:Blue bugloss ( Echium acanthocarpum Svent.) is an endangered endemic plant of La Gomera (Canary Islands). Little is known about its autecology. A seedling cohort was monitored to reveal the causes of extreme fluctuations observed in the population. For this purpose we analysed two plots, one in which we removed the litter and other plants (managed plot), leaving only the seedlings of E. acanthocarpum, and a second, control, plot. Seedling mortality in the managed plot was correlated with the available area and with the biovolume of individual plants, but this was not the case in the control plot. There were significantly more seedlings under the canopy of adult plants (influence area) than outside this canopy zone. There was also significantly more germination near to dead plants than live plants. Some management measures for the conservation of E. acanthocarpum are proposed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0006-3207
1873-2917
DOI:10.1016/S0006-3207(99)00177-9