Bamboo dieback and tree regeneration responses in a subtropical forest of South America |
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Authors: | Jean Carlos Budke Mariângela Santin AlbertiCleudes Zanardi Cintia BarattoElisabete Maria Zanin |
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Institution: | Plant Ecology and Systematics Lab. – ECOSSIS, Department of Biological Sciences, Universidade Regional Integrada do Alto Uruguai e das Missões–URI. Av. Sete de Setembro 1621, Erechim 99700.000, RS, Brazil |
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Abstract: | Bamboos’ vegetative growth are frequently associated to negative effects on tree recruitment and survival and despite this process, the effects of bamboo dieback after flowering events are poorly understood due the rarity of these events. 2 years after the massive flowering of the woody bamboo Merostachys multiramea in a southern South America subtropical forest, we compared changes in environmental conditions; tree species regeneration and production of new culms in canopy gaps resulted from bamboo dieback and areas of continuous canopy allowed by sparse bamboo cover. We observed sharp differences in environment conditions mainly resulted from differences in canopy openness and a NPMANOVA revealed differences among the stands regeneration directions (species composition and density). Average density, number of culms per sapling and total height of M. multiramea did not differ between stands, although slight differences were detected with increasing values toward opened sites. |
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Keywords: | Gap dynamics Merostachys multiramea Diversity indices Ré nyi series Canopy openness Direct and diffuse light |
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