NDLI: Demographic responses to fire of Spartina argentinensis in temporary flooded grassland of Argentina

Content Provider	Springer Nature Link
Author	Feldman, Susana R. Lewis, Juan Pablo
Copyright Year	2007
Abstract	Population characteristics of Spartina argentinensis after fire were analyzed. Field experiments were done in temporary flooded tall grassland, dominated by S. argentinensis at the Reserva Federico Wildermuth (Argentina), on burnt and non-burnt plots. The following variables were analyzed: soil seed bank, potential and real establishment of seedlings and the effect of fire on them, percentage of tillers that continue growing after fire, emergence and survival of tillers, number of tillers that differentiated panicles, and production and predation of propagules. Plants resprouting after fire produced a larger number of tillers with greater tiller emergence, recruitment, and survival than tillers of those of the non-burnt plants. The proportion of tillers with panicles and number of full spikelets per plant was greater in burnt plants than in non-burnt plants, but individuals caryopses unitary weight as well as germination percentage and viability were not affected by fire. Caryopses were severely predated and they did not build up a permanent seed bank. In spite of the high output of caryopses, seedling establishment was almost negligible under most circumstances. Fire and environmental conditions provided very limited “windows of opportunity” for seedlings recruitment. Asexual reproduction was the main process of population maintenance and growth, and fire triggers off the output and eventual establishment of sexual propagules.
Starting Page	785
Ending Page	793
Page Count	9
File Format	PDF
ISSN	02775212
Journal	Wetlands
Volume Number	27
Issue Number	4
e-ISSN	19436246
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-01-01
Publisher Institution	Society of Wetland Scientists
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	clonal plants disturbance establishment predation seedlings Freshwater & Marine Ecology Environmental Management Ecology Hydrogeology Coastal Sciences Landscape Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology Environmental Chemistry

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