EFFECT OF FIRE ON FLOWERING AND FRUITING OF ANACARDIUM HUMILE (ANACARDIACEAE) IN CERRADO STRICTO SENSU

ABSTRACT Knowledge about the effects of fire on sexual reproduction of Cerrado woody species is fundamental for elaborating public policies and management plans for its conservation. The present study evaluated the effect of a controlled burning on flowering and fruiting of Anacardium humile in an C...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Revista árvore 2018-01, Vol.42 (6)
Hauptverfasser: Sousa, Diego Guimarães de, Cunha, Hélida Ferreira da
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:ABSTRACT Knowledge about the effects of fire on sexual reproduction of Cerrado woody species is fundamental for elaborating public policies and management plans for its conservation. The present study evaluated the effect of a controlled burning on flowering and fruiting of Anacardium humile in an Cerrado stricto sensu environment, in Cavalcante, GO. An area with no fire records for five years was submitted to controlled burning in May 2016, used as the experimental area and its adjacent areas protected from fire as control area. In each area, 16 reproductive individuals were selected and their production of floral buds, flowers and fruits, followed up for 17 months. In 2016 the production of reproductive structures was higher in the control area, since the majority of individuals of the burned area invested in the recovery of vegetative structures (branches) damaged by fire. Only three individuals flowered in the burned area in 2016 and presented greater effort in the production of buds and flowers per panicle than the individuals in the control area, however, the fruit set was equal between the areas. One year after fire, the production of reproductive structures became equal between areas. The control area presented higher fruit production in 2017 in comparison to 2016, indicating a variable pattern in annual fruit production. The impact of fire on the reproductive structures of A. humile is greater in the same year of fire and its reproductive potential can be normalized in the subsequent year. RESUMO O conhecimento acerca dos efeitos do fogo na reprodução sexual das espécies lenhosas do Cerrado é fundamental para a elaboração de políticas públicas e de ferramentas de manejo para a sua conservação. O presente estudo avaliou o efeito de uma queima controlada na floração e frutificação de Anacardium humile em ambiente de cerrado sentido restrito, em Cavalcante, GO. Uma área sem registro de fogo há cinco anos foi submetida a queima controlada em maio de 2016 e utilizada como área experimental e suas adjacências protegidas do fogo como áreas controle. Em cada área, 16 indivíduos reprodutivos foram selecionados e sua produção de botões florais, flores e frutos, acompanhada por 17 meses. Em 2016 a produção de estruturas reprodutivas foi maior na área controle, uma vez que a maioria dos indivíduos da área queimada investiu na recuperação das estruturas vegetativas (ramos) danificadas pelo fogo. Apenas três indivíduos floresceram na área queimada em 2016 e apr
ISSN:0100-6762
1806-9088
1806-9088
DOI:10.1590/1806-90882018000600005