Seedling dispersion and population structure of rosewood <i>(Aniba rosaeodora Ducke)</i> in Ucayali, Peru

REVILLA-CHÁVEZ, Jorge M.; SÁENZ-RAMÍREZ, Lyanna H.; GONZALES-ALVARADO, Antony C.; ALVAREZ-GARCÍA, Alex J.; MORI-VÁSQUEZ, Jorge A.; SEBBENN, Alexandre M.

doi:10.1590/1809-4392202402643

person Jorge M. REVILLA-CHÁVEZ *

Investigation · Data curation · Formal analysis · Writing – original draft

school Universidade Estadual Paulista, School of Engineering, CP 31,15385-000, Ilha Solteira - SP, Brazilschool Instituto de Investigaciones de la Amazonía Peruana (IIAP), Yarinacocha - Ucayali, Peru

0000-0001-5978-5146

person Lyanna H. SÁENZ-RAMÍREZ

Investigation · Data curation

school Instituto de Investigaciones de la Amazonía Peruana (IIAP), Yarinacocha - Ucayali, Peru

0000-0002-6597-3626

person Antony C. GONZALES-ALVARADO

Investigation · Data curation

school Universidade Federal do ABC, Centro de Ciências Naturais e Humanas, 09606-045, São Bernardo do Campo - SP, Brazil

0000-0003-3793-0271

person Alex J. ALVAREZ-GARCÍA

Investigation · Data curation

school Universidad Nacional Intercultural de la Amazonía Peruana, Yarinacocha - Ucayali, Peru

0009-0004-0074-9190

person Jorge A. MORI-VÁSQUEZ

Validation · Methodology · Writing – review and editing

school Universidad Nacional de Ucayali, Facultad de Ciencias Forestales y Ambientales, Pucallpa - Ucayali, Peru

0000-0003-0570-8369

person Alexandre M. SEBBENN

Conceptualization · Methodology · Data curation · Writing – review and editing

school Universidade Estadual Paulista, School of Engineering, CP 31,15385-000, Ilha Solteira - SP, Brazilschool Instituto Florestal de São Paulo, CP 1322, 01059-970, São Paulo - SP, Brazil

0000-0003-2352-0941

* Corresponding author
:emailjrevilla@iiap.gob.pe

ASSOCIATE EDITOR:

Angelo Rita https://orcid.org/0000-0002-6579-7925

Figures (4)
Tables (3)

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Figure 1 A - Location map of plots for A. rosaeodora seedling dispersal (1-D, 2-D, 3-D) and population structure (1-E, 2-E, 3-E) assessments; B - Design of plots and strips to evaluate the population structure and distribution of A. roseadora seedlings; C - Plot design for the evaluation of the dispersal of A. rosaeodora plants smaller than 50 cm.

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Figure 2 Aniba rosaeodora seedling dispersion and population structure by diameter class. A - seedling dispersion in the plot 1-D; B - seedling dispersion in the plot 2-D; C - seedling dispersion in the plot 3-D; D - distribution of the population structure in the plot 1-E; E - distribution of the population structure in the plot 2-E; F - distribution of the population structure in the plot 3-E; G - Distribution map in South America, prepared by the authors, based on bibliographic and cartographic records from various institutions and authors; H - political location of the department of Ucayali, Peru; I - political location of the Iparia district in the Ucayali department of Peru, where the sampling was conducted.

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Figure 3 A - Seed and seedling dispersal data for Aniba roseadora, adapted to the Weibull model with reference to the seed tree and dispersing animals; B - Distribution of plants among size-classes (histogram) adjusted with the Weibull model (Weibull distribution curve); C - Q-Q plot for diagnosing differences between the probability distribution of a population from which a random sample has been drawn and a distribution used for comparison; D - The cumulative failure distribution (CDF) function; E - The probability-probability (P-P) chart.

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Figure 4 Determination of population recovery potential by the inverted “J” method (Meyer, 1952) and Liocourt (q) through the abundance distribution of individuals per diameter class (Di). A - Distribution for plot P1; B - Distribution for plot P2; C - Distribution for plot P3; D - Distribution for the sum of the three plots.

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Table 1 Seedling abundance (n, %), density (seedlings m^-2) and mean distance between seedlings to seed tree (m) for plots, subplots and total for Aniba rosaeodora in a forest concession in the Iparia district, Ucayali, Peru.

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Table 2 Population structure of Anita rosaeodora in a forest concession in the Iparia district of Ucayali, Peru.

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Table 3 Regression models applied to determine the status of the sampled Aniba rosaeodora population in a forest concession in the Iparia district, Ucayali, Peru.

Plot	Subplot	Abundance		Density (seedlings m^-2)			Distance to seed tree (m)
Plot	Subplot	n	A%	Mean	SD	CV₁ (%)	Mean	SD	Range	CV₂(%)
1-D		150	100	0.02	-	-	17.9	8.3	2.8-42.2	46
	Sp1	37	24.7	0.08	-	-	7.4	3.0	2.8-12.4	17
	Sp2	72	48.0	0.05	-	-	18.9	3.4	13.5-25	19
	Sp3	41	27.3	0.01	-	-	25.6	7.9	26-42.2	44
2-D		29	100	0.00	-	-	20.2	13.1	3.2-44	65
	Sp1	12	41.4	0.02	-	-	7.8	3.8	3-12.5	19
	Sp2	7	24.1	0.00	-	-	18.7	3.5	14.4-24	17
	Sp3	10	34.5	0.002	-	-	36.2	5.7	26.2-44	28
3-D		26	100	0.00	-	-	14.0	6.7	1-27.6	48
	Sp1	9	34.6	0.02	-	-	6.3	4.3	1-12	31
	Sp2	16	61.5	0.01	-	-	17.4	2.6	13.1-24	19
	Sp3	1	3.9	0.0002	-	-	27.6	0	27.6	0
Total summary
1-D, 2-D, 3-D		205	100	0.03	-	-	18.3	9.2	1-44	50
	Sp1	58	28.3	0.12	0.04	73	7.3	19	1-12.5	47
	Sp2	95	46.3	0.06	0.02	34	18.7	18	13.1-25	76
	Sp3	52	25.4	0.01	0.03	49	30	29	26.2-44	39

Plots/	Abundance		DBH (cm)			H (m)			Density (ind ha^-1)
	n	A%	Mean	Range	CV	Mean	Range	CV	Mean	CV
1-E	38	100	13.7	2.5-38	80.4	13.6	0.11-31	70.5	4.2*	24
Seedling	10	26.3	2.8	2.5-3.4	0.1	2.4	0.11-6.2	6.3	1.1	25
Sapling	10	26.3	8.4	5.8-9.9	2.2	12.3	7-17.6	8.3	1.1	25
Stem	13	34.2	15.9	10.3-24	21.0	19.5	13-31	30.6	1.4	22
Adult	5	13.2	29.6	25.1-38	24.4	21.9	12.2-27.2	10.7	0.6	29
2-E	76	100	11.6	1-53.9	139.5	7.5	0.1-31	98.9	8.4*	23
Seedling	51	67.1	2.2	1-4.1	1.1	1.3	0.1-10	6.5	5.7	11
Sapling	8	10.5	7.0	5.5-9.9	2.5	12.8	6.5-16	10.3	0.9	30
Stem	13	17.1	17.0	12-22.8	15.8	21.8	16-31	21.1	1.4	28
Adult	4	5.3	39.0	29-55.9	109.7	29.0	25.3-31	7.3	0.4	32
3-E	75	100	12.9	0.3-36.6	73.3	10.3	0.1-29.8	103.4	8.3*	23
Seedling	40	53.3	2.9	0.3-4.4	1.9	2.0	0.4-11	8.3	4.4	16
Sapling	5	6.7	7.7	5.3-9.2	2.4	12.0	6.34-18	19.1	0.6	31
Stem	25	33.3	15.6	14.4-23.5	18.7	20.5	9-29.8	30.9	2.8	22
Adult	5	6.7	29.0	25.4-36.6	20.3	24.7	17.5-28.4	19.7	0.6	31
Total summary	189	100	12.7	0.3-53.9	96.4	9.8	0.1-31	99	7	16
Seedling	101	53.4	2.5	0.3-4.4	1.3	1.7	0.1-13	7.3	3.7	63
Sapling	23	12.2	7.7	5.3-9.9	2.5	12.4	4.2-18	10.3	0.9	33
Stem	51	27.0	16.0	10.3-24	18.1	20.6	7.4-31	27.9	1.9	41
Adult	14	7.4	32.1	25.1-55.9	59.9	24.9	13.8-31	19.6	0.5	12

Class (Di)	P1		P2		P3		PT
Class (Di)	n (%)	q1	n (%)	q2	n (%)	q3	n (%)	qt
10	16 (57.1)	2.3	13 (52)	1.6	19 (54.3)	1.7	48 (54.5)	1.8
20	7 (25)	1.8	8 (32)	8.0	11 (31.4)	2.8	26 (29.5	2.9
30	4 (14.3)	4.0	1 (4)	0.5	4 (11.4)		9 (10.2)	3.0
40	1 (3.6)		2 (8)	2.0			3 (3.4)	1.5
50			1 (4)		1 (2.9)		2 (2.3)
Total	28 (100)		25 (100)		35		88 (100)
Equation	y = 42.3e^-0.9Di		y = 20.5e^-0.7Di		y = 42.9e^-0.8Di		y = 158.2e^-0.96Di
R²	0.99		0.9		0.98		0.98

[TFN1] n = abundance of individuals per plot, and A% = abundance percentage per area; SD= standard deviation; CV₁= Density variation coefficient (%); CV₂= Distance variation coefficient (%).

Seedling dispersion and population structure of rosewood (Aniba rosaeodora Ducke) in Ucayali, Peru

Dispersión de plántulas y estructura poblacional de palo rosa (Aniba rosaeodora Ducke) en Ucayali, Perú

ABSTRACT