Phenological Pattern of <i>Attalea maripa</i> (Aubl.) Mart. in Pastures Areas of the Eastern Amazon

Pires, Helaine Cristine Gonçalves; Rosa, Leonilde dos Santos; Cabral, Benedito Silva; Silva, Viviane Martins da; Nogueira, Glauco André; Ferreira, Paulo Ricardo Neves

doi:10.1590/2179-8087.048313

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Artigos Originais • Floresta Ambient. 23 (2) • Apr-Jun 2016 • https://doi.org/10.1590/2179-8087.048313 copy

Phenological Pattern of Attalea maripa (Aubl.) Mart. in Pastures Areas of the Eastern Amazon

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The research evaluated the Attale amaripa (inajá) phenology relating the phenological events with rainfall. Data were obtained from 100 adult palms from natural regeneration in 3.25 acres of pasture in Bonito-PA, from August 2009 to December 2011. Data were analyzed using phenograms, synchrony index and factor analysis. The research showed that the phenological pattern of inajá is not seasonal. Flowering and fruiting occur throughout the year and are long-lasting events and suffer fluctuations throughout the year. The closed spathe phenology is highly synchronous. The fruiting is a slightly synchronous phenological event. Rainfall is a major climatic factor for phenology inajá because negatively affects production of open spathe with flowers and leaves fall and positively mature fruit drop.

Keywords:
inajá; flowering; fruiting; synchrony

Componentes	Autovalores e variâncias iniciais			Variância após rotação
	Variância total	% da variância	Variância acumulada	Variância total	% da variância	Variância acumulada
1	2,811	31,237	31,237	2,575	28,614	28,614
2	2,352	26,129	57,366	2,414	26,825	55,439
3	1,393	15,473	72,839	1,566	17,400	72,839
4	0,874	9,715	82,554
5	0,685	7,616	90,169
6	0,457	5,073	95,242
7	0,182	2,021	97,263
8	0,137	1,518	98,781
9	0,110	1,219	100,000

Variáveis	Fatores			Comunalidades
	1	2	3
Espata fechada	0,034	– 0,923	0,041	0,856
Espata aberta com flores	– 0,787	–0,005	–0,056	0,623
Espata aberta com flores caindo	0,067	0,845	0,144	0,739
Espata aberta com flores caídas	–0,150	0,833	0,044	0,718
Cacho com frutos verdes	0,490	–0,225	0,708	0,822
Cacho com frutos maduros	0,077	–0,294	– 0,861	0,834
Cacho com frutos maduros caindo	0,632	–0,122	0,080	0,421
Queda de folhas velhas	– 0,829	–0,045	0,398	0,848
Precipitação pluviométrica	0,751	–0,006	0,363	0,695
% da variância	28,614	26,825	17,400	-

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[1] Helaine Cristine Gonçalves Pires Instituto de Ciências Agrárias, Universidade Federal Rural da Amazônia – UFRA, Avenida Presidente Tancredo Neves, 2501, Terra Firme, CEP 66077-901, Belém, PA, Brasil e-mail: helainepires@yahoo.com.br