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Reproductive strategies in two arctic Pedicularis species (Scrophulariaceae)
University of Gothenburg.
University of Gothenburg.
University of Gothenburg.
1993 (English)In: Ecography, ISSN 0906-7590, E-ISSN 1600-0587, Vol. 16, no 2, 154-166 p.Article in journal (Refereed) Published
Abstract [en]

A study of a number of reproductive traits in two sympatric species of Pedicularis in northern Swedish Lapland, the subarctic-alpine P lapponica and the artic P hursuta, revealed that the life-history strategies of the two species differ profoundly High fruit set and low seed abortion rate, as m P hursuta, is common in arctic plants in late-thawing habitats and represents a case of extreme adversity selection rather than an indication of a ruderal life-history strategy Pedicularis lapponica, on the other hand, is a typical K-strategist (or stress-tolerator) requiring a longer period of growth for optimal reproduction Occuring at both low and high altitudes in the area, P lapponica tends to increase in self-compatibility with altitude, which is interpreted as an adaptation to lower pollinator visitation frequency in arctic environments The variation in length of the protruding part of the style in P lapponica is shown to be correlated with exposure to light Predispersal seed predation is severe m P lapponica at low altitudes, where the capsules are attacked by fly and moth larvae At high altitudes, a minor proportion of the capsules of P lapponica experience predation and only from flies, while P hursuta is completely unpredated

Place, publisher, year, edition, pages
1993. Vol. 16, no 2, 154-166 p.
National Category
Ecology Botany
Research subject
Natural Science, Ecology
Identifiers
URN: urn:nbn:se:lnu:diva-51376DOI: 10.1111/j.1600-0587.1993.tb00067.xOAI: oai:DiVA.org:lnu-51376DiVA: diva2:914766
Available from: 2016-03-25 Created: 2016-03-25 Last updated: 2016-04-29Bibliographically approved

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Citation style
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