Post-burn recovery in the flooding Pampa: Impact of an invasive legume
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CitationLaterra, P. (1997). Post-burn recovery in the Flooding Pampa: Impact of an invasive legume. Journal of Range Management, 50(3), 274-277.
PublisherSociety for Range Management
JournalJournal of Range Management
AbstractWinter burning of Paspalum quadrifarium Lam. stands ("pajonales") promotes colonization of denuded spaces by several alien species. Lotus tenuis Waldst et Kit. ("lotus"), a recent invader of the region, is able to reach very high densities between the resprouting bunches of the dominant species. Results of a removal experiment performed to evaluate the impact of natural establishment of lotus on post-born colonization of pajonal stands are reported. Seedlings of lotus were removed shortly after their emergence between burned bunches of P. quadrifarium. Eighty days after burning, approximately 30% of the soil surface remained uncovered within removal plots, whereas canopy cover was complete within controls. Furthermore, final (137 days post-burn) total aboveground biomass was 2.7 times higher in control than in removal plots. Removal of lotus significantly (p