info:eu-repo/semantics/article
Composición y estructura arbórea de petenes en la Reserva de la Biosfera de Los Petenes, Campeche, México
Autor
PEDRO ZAMORA CRESCENCIO
JEAN FRANCOIS MAS
VICTOR RICO GRAY
MARIA DEL ROSARIO DOMINGUEZ CARRASCO
PASCALE MARIE CARMEN VILLEGAS
CELSO GUTIERREZ BAEZ
ROBERTO CARLOS BARRIENTOS MEDINA
Institución
Resumen
We analyzed the composition and vegetation structure of 11 petenes of the Reserva
de la Biosfera de Los Petenes (RBLP),
Campeche. In each peten we selected five
20 m x 20 m plots (400 m2
, total 2000 m2
)
where we recorded and measured all woody individuals with a diameter at breast
height (DBH) ≥ 5cm. The structure of each
peten was described based on relative values of density, frequency and dominance
(RIVI), and the distribution of diameter
classes. Species diversity for each peten
was estimated using the Shannon-Wiener
Index (H’), and floristic similarity between
petenes was evaluated using the Morisita
Index. We recorded 2 927 individuals of
32 woody species, in 29 genera, and 23
families. The families with most genera
and species were the Fabaceae (3/3) and the
Sapotaceae (3/3), while Metopium brownei, Manilkara zapota and Laguncularia
racemosa presented the greatest density
per hectare. The distribution of diameter
classes shows that most individuals were
grouped in the lower classes. The highest
RIVI was obtained for Laguncularia racemosa (128.43), Metopium brownei (128.34)
and Manilkara zapota (110.89). Based on
species similarity, the area was divided
into two groups: Center Group (petenes 5-
11) and Northern Group (petens 1-4). The
highest diversity indices were recorded
for peten 5 (Center Group, H’=3.54), and
peten 1 (H’=2.44, Northern Group). In the
Northern Group, petens 1 and 3 were the
most similar (98%), whereas petens 5 and 7
were the most similar in the Center Group
(94%). Despite the degree of disturbance of
the areas, the characteristic woody species
were Metopium brownei, Manilkara zapota
and the palm Sabal yapa.