期刊
AUSTRAL ECOLOGY
卷 48, 期 5, 页码 1042-1045出版社
WILEY
DOI: 10.1111/aec.13326
关键词
fire-stimulated flowering; grasslands; ground-layer species; neotropical savannas; sedges
类别
Fire-stimulated flowering has been studied in tropical grasslands and savannas. Recent research revealed a Cyperaceae species that can flower within 24 hours after fire, and now two new species with this rapid phenological response have been described, suggesting that this phenomenon may be more common than previously thought.
Fire-stimulated flowering has long been a subject of investigation in tropical grasslands and savannas. Still, speedy blooming (i.e. flowering in <24 h after fire) had only been recently described for a single species of Cyperaceae common in Cerrado open ecosystems. Here, we described two new species displaying this unique feature of producing flowers <24 h after fire, suggesting that this fast phenological response might be more common than previously thought. Rhynchospora confusa F.Ballard and Rhynchospora terminalis Nees ex Steud. var. terminalis are two widely distributed species in grasslands and savannas at Chapada dos Veadeiros (a World Natural Heritage by UNESCO). Yet, there is a paucity of herbarium collection for both species and no registration of the quick bloom after fire passage or other aspects of their ecology. Understanding the diversity of phenological patterns and vegetation responses to fire is key to uncovering the functioning and singularities of the tropical open ecosystems.
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