PHENOLOGICAL SYNCHRONICITY OF Byrsonima pachyphylla A. Juss. AND B. verbascifolia (L.) DC. (MALPIGHIACEAE) AND ITS RELATION WITH CLIMATE SEASONALITY

IF 0.6 4区农林科学 Q4 FORESTRY

Revista Arvore Pub Date : 2023-01-01 DOI:10.1590/1806-908820230000018

Andressa Cavalcante Meireles, Ageu da Silva Monteiro Freire, Wagner de Melo Ferreira, Rodney Haulien Oliveira Viana

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Abstract

ABSTRACT Phenology is defined as the study of the timing of biological events and the biotic and abiotic factors that trigger them. This study reports a description of the phenology of Byrsonima pachyphylla and B. verbascifolia in an ecotonal area between the Cerrado and Amazonia biomes in the Brazilian state of Tocantins, to contribute to a better understanding of their autoecology in this region. Two populations of 15 adult individuals of each species, randomly selected in a Cerrado area in Porto Nacional, Tocantins, were surveyed for 12 months. Percentages were estimated of leaf flush, young, mature, and senescent leaves (vegetative phenology), flower buds, open flowers, green and ripe fruits (reproductive phenology) present in the canopy, as well as the synchrony of the reproductive phenophases. The vegetative and reproductive phenological events were seasonal and occurred mainly at the end of the dry season and during the transition from the dry to the rainy season. Considering the vegetative and reproductive phenology, B. pachyphylla was classified as “evergreen with continuous growth” and as a late-flowering species, whereas B. verbascifolia was classified as “evergreen with seasonal growth” and as an early-flowering species. The reproductive phenological activity of the species exhibited high synchrony. The results suggest that the vegetative and reproductive events are peculiar to each species and represent effective strategies for their survival in the Cerrado, which is markedly seasonal.

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厚叶松的物候同步性。和紫檀(L.)直流。(malpiighiaceae)及其与气候季节的关系

物候学被定义为研究生物事件发生的时间以及触发这些事件的生物和非生物因素。本研究报道了巴西托坎廷斯州塞拉多和亚马逊生物群系之间的一个生态区中厚叶柏松木(Byrsonima pachyphylla)和毛叶柏(B. verbascifolia)的物候特征，以期更好地了解其在该地区的自身生态学。在托坎廷斯波尔图国家塞拉多地区随机选取2个种群，每个种群15只成虫，进行了为期12个月的调查。估算了冠层内红叶、幼叶、成熟叶和衰老叶(营养物候学)、花蕾、开放花、青果和成熟果(生殖物候学)的比例，以及生殖物候期的同步性。营养和生殖物候活动具有季节性，主要发生在旱季末和旱季向雨季过渡期间。从营养物候和生殖物候两个方面考虑，将厚叶柏划分为“常绿连续生长”的晚花种，将毛叶柏划分为“常绿季节性生长”的早花种。繁殖物候活动表现出高度的同步性。结果表明，每个物种特有的营养和生殖事件代表了它们在塞拉多地区生存的有效策略，这是明显的季节性。

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来源期刊

Revista Arvore FORESTRY-

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

4-8 weeks

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