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The paradox of berry production in temperate species ofVaccinium

 

作者: S. P. Vander Kloet,   N. M. Hill,  

 

期刊: Canadian Journal of Botany  (NRC Available online 1994)
卷期: Volume 72, issue 1  

页码: 52-58

 

ISSN:0008-4026

 

年代: 1994

 

DOI:10.1139/b94-007

 

出版商: NRC Research Press

 

数据来源: NRC

 

摘要:

Vegetative cover, fruiting phenology, and seed production was estimated from sixVacciniaheathlands on the Avalon Peninsula of Newfoundland so that the efficacy of theVacciniumseed bank could be ascertained. Out of the six species ofVacciniumpresent in this vegetation, onlyV.angustifoliumandV.borealewere recovered from 120 soil cores taken;V.uliginosumandV.vitis-idaea, two of the most common species on these heaths, were not represented in the seed bank at all, yet experimentally buried seeds from both these taxa will successfully germinate when exhumed after 6 years of burial. Indeed, 81% of the germinants were from taxa with dry fruits such asKalmia,Luzula,Juncus, andAgrostis. Paucity ofVacciniumseed in the soil column may be due in part to fungal rot and avian predation.Key words:Vaccinium, seed production, seed banks, heaths.

 

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